/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 SequenceOfStatements --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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label12.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 11:17:26,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 11:17:26,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 11:17:26,971 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 11:17:26,972 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 11:17:26,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 11:17:26,974 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 11:17:26,976 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 11:17:26,978 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 11:17:26,979 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 11:17:26,980 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 11:17:26,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 11:17:26,981 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 11:17:26,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 11:17:26,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 11:17:26,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 11:17:26,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 11:17:26,986 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 11:17:26,988 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 11:17:26,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 11:17:26,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 11:17:26,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 11:17:26,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 11:17:26,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 11:17:27,003 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 11:17:27,003 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 11:17:27,004 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 11:17:27,007 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 11:17:27,008 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 11:17:27,009 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 11:17:27,009 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 11:17:27,013 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 11:17:27,014 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 11:17:27,015 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 11:17:27,016 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 11:17:27,016 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 11:17:27,017 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 11:17:27,019 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 11:17:27,019 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 11:17:27,020 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 11:17:27,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 11:17:27,023 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 [2020-10-12 11:17:27,074 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 11:17:27,075 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 11:17:27,076 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 11:17:27,077 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 11:17:27,077 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 11:17:27,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 11:17:27,078 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 11:17:27,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 11:17:27,078 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 11:17:27,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 11:17:27,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 11:17:27,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 11:17:27,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 11:17:27,079 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 11:17:27,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 11:17:27,080 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 11:17:27,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 11:17:27,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 11:17:27,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 11:17:27,081 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 11:17:27,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 11:17:27,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:17:27,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 11:17:27,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 11:17:27,083 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 11:17:27,083 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 11:17:27,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 11:17:27,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 11:17:27,083 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 11:17:27,083 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 -> SequenceOfStatements 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 11:17:27,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 11:17:27,452 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 11:17:27,456 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 11:17:27,458 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 11:17:27,459 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 11:17:27,459 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label12.c [2020-10-12 11:17:27,521 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0266b777/2d0710b298d842b09c0b4cad0caeebc7/FLAG3f422f057 [2020-10-12 11:17:28,195 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 11:17:28,196 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label12.c [2020-10-12 11:17:28,222 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0266b777/2d0710b298d842b09c0b4cad0caeebc7/FLAG3f422f057 [2020-10-12 11:17:28,356 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0266b777/2d0710b298d842b09c0b4cad0caeebc7 [2020-10-12 11:17:28,365 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 11:17:28,367 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 11:17:28,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 11:17:28,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 11:17:28,371 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 11:17:28,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:17:28" (1/1) ... [2020-10-12 11:17:28,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@605f46bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:17:28, skipping insertion in model container [2020-10-12 11:17:28,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:17:28" (1/1) ... [2020-10-12 11:17:28,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 11:17:28,463 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 11:17:29,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:17:29,369 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 11:17:29,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:17:29,693 INFO L208 MainTranslator]: Completed translation [2020-10-12 11:17:29,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:17:29 WrapperNode [2020-10-12 11:17:29,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 11:17:29,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 11:17:29,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 11:17:29,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 11:17:29,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:17:29" (1/1) ... [2020-10-12 11:17:29,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:17:29" (1/1) ... [2020-10-12 11:17:29,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:17:29" (1/1) ... [2020-10-12 11:17:29,758 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:17:29" (1/1) ... [2020-10-12 11:17:29,835 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:17:29" (1/1) ... [2020-10-12 11:17:29,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:17:29" (1/1) ... [2020-10-12 11:17:29,881 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:17:29" (1/1) ... [2020-10-12 11:17:29,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 11:17:29,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 11:17:29,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 11:17:29,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 11:17:29,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:17:29" (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 [2020-10-12 11:17:29,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 11:17:29,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 11:17:29,965 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 11:17:29,965 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 11:17:29,965 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 11:17:29,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 11:17:29,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 11:17:29,966 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 11:17:29,966 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 11:17:29,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 11:17:29,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 11:17:31,862 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 11:17:31,862 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 11:17:31,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:17:31 BoogieIcfgContainer [2020-10-12 11:17:31,869 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 11:17:31,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 11:17:31,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 11:17:31,874 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 11:17:31,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:17:28" (1/3) ... [2020-10-12 11:17:31,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c3d197f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:17:31, skipping insertion in model container [2020-10-12 11:17:31,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:17:29" (2/3) ... [2020-10-12 11:17:31,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c3d197f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:17:31, skipping insertion in model container [2020-10-12 11:17:31,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:17:31" (3/3) ... [2020-10-12 11:17:31,878 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label12.c [2020-10-12 11:17:31,889 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 11:17:31,898 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 11:17:31,914 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 11:17:31,942 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 11:17:31,943 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 11:17:31,943 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 11:17:31,943 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 11:17:31,943 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 11:17:31,943 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 11:17:31,944 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 11:17:31,944 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 11:17:31,972 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-12 11:17:31,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-12 11:17:31,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:17:31,990 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:17:31,990 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:17:31,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:17:31,997 INFO L82 PathProgramCache]: Analyzing trace with hash 20739176, now seen corresponding path program 1 times [2020-10-12 11:17:32,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:17:32,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248596012] [2020-10-12 11:17:32,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:17:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:32,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:32,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:35,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:35,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-12 11:17:35,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:17:35,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3430 [2020-10-12 11:17:35,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:35,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 11:17:35,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:17:35,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-12 11:17:35,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 11:17:36,524 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-12 11:17:37,038 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:17:37,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:17:37,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:37,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:37,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:37,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:17:37,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:37,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 11:17:37,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:37,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:17:37,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:17:37,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:17:37,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:37,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:17:37,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1248596012] [2020-10-12 11:17:37,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 11:17:37,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 11:17:37,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395643352] [2020-10-12 11:17:37,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 11:17:37,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:17:37,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 11:17:37,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:17:37,626 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 12 states. [2020-10-12 11:17:38,008 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-12 11:17:38,762 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2020-10-12 11:17:39,507 WARN L193 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2020-10-12 11:17:40,257 WARN L193 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 174 [2020-10-12 11:17:41,453 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 195 DAG size of output: 173 [2020-10-12 11:17:42,789 WARN L193 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 195 DAG size of output: 172 [2020-10-12 11:17:44,227 WARN L193 SmtUtils]: Spent 994.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 171 [2020-10-12 11:17:47,204 WARN L193 SmtUtils]: Spent 976.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 170 [2020-10-12 11:17:48,508 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 205 DAG size of output: 169 [2020-10-12 11:17:51,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:17:51,168 INFO L93 Difference]: Finished difference Result 737 states and 1287 transitions. [2020-10-12 11:17:51,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 11:17:51,172 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 169 [2020-10-12 11:17:51,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:17:51,189 INFO L225 Difference]: With dead ends: 737 [2020-10-12 11:17:51,190 INFO L226 Difference]: Without dead ends: 364 [2020-10-12 11:17:51,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-10-12 11:17:51,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-12 11:17:51,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2020-10-12 11:17:51,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-12 11:17:51,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 525 transitions. [2020-10-12 11:17:51,272 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 525 transitions. Word has length 169 [2020-10-12 11:17:51,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:17:51,273 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 525 transitions. [2020-10-12 11:17:51,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 11:17:51,274 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 525 transitions. [2020-10-12 11:17:51,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-12 11:17:51,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:17:51,279 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:17:51,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 11:17:51,280 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:17:51,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:17:51,281 INFO L82 PathProgramCache]: Analyzing trace with hash -335389617, now seen corresponding path program 1 times [2020-10-12 11:17:51,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:17:51,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741116991] [2020-10-12 11:17:51,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:17:51,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:51,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:51,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:52,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:56,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:56,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-12 11:17:56,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:17:56,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 11:17:56,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:56,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 11:17:56,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:17:56,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-12 11:17:56,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:57,565 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-12 11:17:57,686 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-12 11:17:57,900 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 72 [2020-10-12 11:17:58,307 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 87 [2020-10-12 11:17:58,656 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 85 [2020-10-12 11:17:58,967 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 72 [2020-10-12 11:17:59,234 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 63 [2020-10-12 11:17:59,445 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 49 [2020-10-12 11:17:59,614 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:17:59,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:17:59,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:59,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:59,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:59,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:17:59,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:59,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 11:17:59,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:59,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:17:59,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:17:59,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:17:59,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:59,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:17:59,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:59,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:59,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:59,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:17:59,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:59,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-12 11:17:59,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:59,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:17:59,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:59,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:17:59,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:00,127 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2020-10-12 11:18:00,423 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 91 [2020-10-12 11:18:00,904 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:18:00,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741116991] [2020-10-12 11:18:00,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:18:00,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 11:18:00,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240319355] [2020-10-12 11:18:00,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 11:18:00,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:18:00,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 11:18:00,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-10-12 11:18:00,908 INFO L87 Difference]: Start difference. First operand 364 states and 525 transitions. Second operand 16 states. [2020-10-12 11:18:01,217 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 11:18:01,902 WARN L193 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 77 [2020-10-12 11:18:02,253 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 58 [2020-10-12 11:18:02,698 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 83 [2020-10-12 11:18:03,464 WARN L193 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 177 [2020-10-12 11:18:04,275 WARN L193 SmtUtils]: Spent 748.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 197 [2020-10-12 11:18:05,641 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 246 DAG size of output: 194 [2020-10-12 11:18:06,292 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 90 [2020-10-12 11:18:08,103 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 251 DAG size of output: 191 [2020-10-12 11:18:10,861 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 252 DAG size of output: 188 [2020-10-12 11:18:13,929 WARN L193 SmtUtils]: Spent 882.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 185 [2020-10-12 11:18:15,301 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 253 DAG size of output: 181 [2020-10-12 11:18:17,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:18:17,362 INFO L93 Difference]: Finished difference Result 756 states and 1212 transitions. [2020-10-12 11:18:17,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 11:18:17,366 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 180 [2020-10-12 11:18:17,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:18:17,372 INFO L225 Difference]: With dead ends: 756 [2020-10-12 11:18:17,372 INFO L226 Difference]: Without dead ends: 513 [2020-10-12 11:18:17,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2020-10-12 11:18:17,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2020-10-12 11:18:17,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 509. [2020-10-12 11:18:17,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2020-10-12 11:18:17,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 677 transitions. [2020-10-12 11:18:17,415 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 677 transitions. Word has length 180 [2020-10-12 11:18:17,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:18:17,416 INFO L479 AbstractCegarLoop]: Abstraction has 509 states and 677 transitions. [2020-10-12 11:18:17,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 11:18:17,416 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 677 transitions. [2020-10-12 11:18:17,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-12 11:18:17,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:18:17,420 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:18:17,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 11:18:17,421 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:18:17,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:18:17,421 INFO L82 PathProgramCache]: Analyzing trace with hash -209708669, now seen corresponding path program 1 times [2020-10-12 11:18:17,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:18:17,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436798339] [2020-10-12 11:18:17,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:18:17,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:17,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:18,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:18,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-12 11:18:18,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:18,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 704 [2020-10-12 11:18:18,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:18,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:18:18,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 11:18:18,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-12 11:18:18,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:18,449 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:18:18,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:18:18,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:18,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:18,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:18,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:18:18,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:18,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 11:18:18,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:18,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:18:18,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:18:18,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:18:18,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:18,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:18:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:18,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:18,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:18,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:18:18,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:18,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-12 11:18:18,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:18,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:18:18,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:18:18,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 11:18:18,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:18,649 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:18:18,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436798339] [2020-10-12 11:18:18,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:18:18,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:18:18,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188238551] [2020-10-12 11:18:18,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 11:18:18,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:18:18,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 11:18:18,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 11:18:18,651 INFO L87 Difference]: Start difference. First operand 509 states and 677 transitions. Second operand 5 states. [2020-10-12 11:18:19,012 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:18:21,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:18:21,518 INFO L93 Difference]: Finished difference Result 979 states and 1452 transitions. [2020-10-12 11:18:21,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 11:18:21,519 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 190 [2020-10-12 11:18:21,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:18:21,525 INFO L225 Difference]: With dead ends: 979 [2020-10-12 11:18:21,526 INFO L226 Difference]: Without dead ends: 736 [2020-10-12 11:18:21,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:18:21,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2020-10-12 11:18:21,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 727. [2020-10-12 11:18:21,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-10-12 11:18:21,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 995 transitions. [2020-10-12 11:18:21,566 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 995 transitions. Word has length 190 [2020-10-12 11:18:21,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:18:21,567 INFO L479 AbstractCegarLoop]: Abstraction has 727 states and 995 transitions. [2020-10-12 11:18:21,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 11:18:21,567 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 995 transitions. [2020-10-12 11:18:21,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-12 11:18:21,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:18:21,571 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:18:21,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 11:18:21,572 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:18:21,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:18:21,572 INFO L82 PathProgramCache]: Analyzing trace with hash -733270516, now seen corresponding path program 1 times [2020-10-12 11:18:21,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:18:21,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669579743] [2020-10-12 11:18:21,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:18:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:21,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:22,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:22,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:23,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:23,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:23,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-12 11:18:23,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:18:23,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2254 [2020-10-12 11:18:23,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:23,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:18:23,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 11:18:23,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-12 11:18:23,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:24,128 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:18:24,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:18:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:24,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:24,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:24,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:18:24,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:24,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:18:24,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:24,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:18:24,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:18:24,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:18:24,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:18:24,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:18:24,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:24,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:24,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:24,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:18:24,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:24,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-12 11:18:24,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:24,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:18:24,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:18:24,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 11:18:24,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:24,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:18:24,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:24,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:24,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:24,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:24,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 11:18:24,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:18:24,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 11:18:24,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:24,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:18:24,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:18:24,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 11:18:24,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:18:24,442 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 11:18:24,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669579743] [2020-10-12 11:18:24,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:18:24,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:18:24,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212229901] [2020-10-12 11:18:24,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 11:18:24,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:18:24,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 11:18:24,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:18:24,445 INFO L87 Difference]: Start difference. First operand 727 states and 995 transitions. Second operand 6 states. [2020-10-12 11:18:24,754 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-12 11:18:27,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:18:27,393 INFO L93 Difference]: Finished difference Result 1648 states and 2464 transitions. [2020-10-12 11:18:27,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 11:18:27,394 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 200 [2020-10-12 11:18:27,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:18:27,403 INFO L225 Difference]: With dead ends: 1648 [2020-10-12 11:18:27,404 INFO L226 Difference]: Without dead ends: 1187 [2020-10-12 11:18:27,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:18:27,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2020-10-12 11:18:27,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 1160. [2020-10-12 11:18:27,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1160 states. [2020-10-12 11:18:27,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1590 transitions. [2020-10-12 11:18:27,464 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1590 transitions. Word has length 200 [2020-10-12 11:18:27,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:18:27,466 INFO L479 AbstractCegarLoop]: Abstraction has 1160 states and 1590 transitions. [2020-10-12 11:18:27,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 11:18:27,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1590 transitions. [2020-10-12 11:18:27,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-12 11:18:27,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:18:27,471 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:18:27,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 11:18:27,471 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:18:27,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:18:27,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1423102006, now seen corresponding path program 1 times [2020-10-12 11:18:27,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:18:27,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799204320] [2020-10-12 11:18:27,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:18:27,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:27,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:27,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:27,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:28,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:28,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:29,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:30,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:30,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-12 11:18:30,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 11:18:30,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2956 [2020-10-12 11:18:30,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:30,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:18:30,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-12 11:18:30,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-12 11:18:30,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:18:30,731 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:18:30,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:18:30,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:30,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:30,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:30,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:18:30,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:30,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:18:30,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:30,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:18:30,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:18:30,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:18:30,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 11:18:30,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:18:30,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:30,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:30,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:30,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:18:30,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:30,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 11:18:30,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:30,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:18:30,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:18:30,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:18:30,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:30,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:18:30,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:30,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:30,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:30,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:30,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 11:18:30,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:18:30,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 11:18:30,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:30,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:18:30,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:18:30,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 11:18:30,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:30,949 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 11:18:30,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799204320] [2020-10-12 11:18:30,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:18:30,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:18:30,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581421779] [2020-10-12 11:18:30,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 11:18:30,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:18:30,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 11:18:30,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 11:18:30,952 INFO L87 Difference]: Start difference. First operand 1160 states and 1590 transitions. Second operand 5 states. [2020-10-12 11:18:31,347 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:18:34,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:18:34,068 INFO L93 Difference]: Finished difference Result 2914 states and 4221 transitions. [2020-10-12 11:18:34,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 11:18:34,069 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 200 [2020-10-12 11:18:34,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:18:34,081 INFO L225 Difference]: With dead ends: 2914 [2020-10-12 11:18:34,082 INFO L226 Difference]: Without dead ends: 2020 [2020-10-12 11:18:34,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:18:34,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2020-10-12 11:18:34,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 2010. [2020-10-12 11:18:34,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2010 states. [2020-10-12 11:18:34,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 2828 transitions. [2020-10-12 11:18:34,156 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 2828 transitions. Word has length 200 [2020-10-12 11:18:34,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:18:34,157 INFO L479 AbstractCegarLoop]: Abstraction has 2010 states and 2828 transitions. [2020-10-12 11:18:34,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 11:18:34,157 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 2828 transitions. [2020-10-12 11:18:34,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-12 11:18:34,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:18:34,165 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:18:34,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 11:18:34,165 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:18:34,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:18:34,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1035297333, now seen corresponding path program 1 times [2020-10-12 11:18:34,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:18:34,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228631693] [2020-10-12 11:18:34,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:18:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:34,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:34,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:35,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:37,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:37,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-12 11:18:37,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:18:37,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3491 [2020-10-12 11:18:37,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:37,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:18:37,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:18:37,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-10-12 11:18:37,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:18:38,070 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:18:38,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:18:38,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:38,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:38,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:38,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:18:38,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:38,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 11:18:38,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:38,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:18:38,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:18:38,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:18:38,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:18:38,222 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-12 11:18:38,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:18:38,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:38,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:38,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:38,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 11:18:38,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:38,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-12 11:18:38,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:38,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:18:38,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:18:38,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 11:18:38,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:18:38,506 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 11:18:38,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228631693] [2020-10-12 11:18:38,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:18:38,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:18:38,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932067979] [2020-10-12 11:18:38,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 11:18:38,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:18:38,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 11:18:38,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:18:38,516 INFO L87 Difference]: Start difference. First operand 2010 states and 2828 transitions. Second operand 6 states. [2020-10-12 11:18:38,708 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-12 11:18:41,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:18:41,362 INFO L93 Difference]: Finished difference Result 5553 states and 8467 transitions. [2020-10-12 11:18:41,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 11:18:41,364 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 201 [2020-10-12 11:18:41,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:18:41,388 INFO L225 Difference]: With dead ends: 5553 [2020-10-12 11:18:41,389 INFO L226 Difference]: Without dead ends: 3809 [2020-10-12 11:18:41,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:18:41,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3809 states. [2020-10-12 11:18:41,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3809 to 3748. [2020-10-12 11:18:41,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3748 states. [2020-10-12 11:18:41,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3748 states to 3748 states and 5259 transitions. [2020-10-12 11:18:41,515 INFO L78 Accepts]: Start accepts. Automaton has 3748 states and 5259 transitions. Word has length 201 [2020-10-12 11:18:41,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:18:41,516 INFO L479 AbstractCegarLoop]: Abstraction has 3748 states and 5259 transitions. [2020-10-12 11:18:41,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 11:18:41,516 INFO L276 IsEmpty]: Start isEmpty. Operand 3748 states and 5259 transitions. [2020-10-12 11:18:41,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-12 11:18:41,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:18:41,527 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:18:41,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 11:18:41,528 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:18:41,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:18:41,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1801358491, now seen corresponding path program 1 times [2020-10-12 11:18:41,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:18:41,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584817889] [2020-10-12 11:18:41,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:18:41,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:41,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:41,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:41,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:41,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:41,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:42,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:44,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:44,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:45,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:46,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:46,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-12 11:18:46,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 11:18:46,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-12 11:18:46,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:46,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:18:46,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 11:18:46,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 11:18:46,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:46,801 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:18:46,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:18:46,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:46,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:46,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:46,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:18:46,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:46,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:18:46,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:46,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:18:46,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:18:46,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:18:46,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:46,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:18:46,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:46,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:46,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:46,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:18:46,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:46,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 11:18:46,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:46,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:18:46,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:18:46,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 11:18:46,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:18:46,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:18:46,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:46,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:46,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:46,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:47,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:47,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 11:18:47,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:18:47,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 11:18:47,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:47,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:18:47,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:18:47,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 11:18:47,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:47,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 11:18:47,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:47,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:47,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:47,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 11:18:47,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:47,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-12 11:18:47,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:47,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:18:47,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:18:47,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 11:18:47,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:47,202 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 66 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 11:18:47,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584817889] [2020-10-12 11:18:47,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:18:47,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:18:47,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668524218] [2020-10-12 11:18:47,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:18:47,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:18:47,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:18:47,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:18:47,206 INFO L87 Difference]: Start difference. First operand 3748 states and 5259 transitions. Second operand 8 states. [2020-10-12 11:18:47,367 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:18:47,677 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:18:48,139 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:18:51,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:18:51,805 INFO L93 Difference]: Finished difference Result 9072 states and 13687 transitions. [2020-10-12 11:18:51,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 11:18:51,806 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 223 [2020-10-12 11:18:51,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:18:51,834 INFO L225 Difference]: With dead ends: 9072 [2020-10-12 11:18:51,834 INFO L226 Difference]: Without dead ends: 5590 [2020-10-12 11:18:51,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-12 11:18:51,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5590 states. [2020-10-12 11:18:51,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5590 to 5495. [2020-10-12 11:18:51,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5495 states. [2020-10-12 11:18:52,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5495 states to 5495 states and 6990 transitions. [2020-10-12 11:18:52,002 INFO L78 Accepts]: Start accepts. Automaton has 5495 states and 6990 transitions. Word has length 223 [2020-10-12 11:18:52,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:18:52,002 INFO L479 AbstractCegarLoop]: Abstraction has 5495 states and 6990 transitions. [2020-10-12 11:18:52,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:18:52,002 INFO L276 IsEmpty]: Start isEmpty. Operand 5495 states and 6990 transitions. [2020-10-12 11:18:52,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-12 11:18:52,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:18:52,021 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:18:52,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 11:18:52,022 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:18:52,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:18:52,022 INFO L82 PathProgramCache]: Analyzing trace with hash 539082144, now seen corresponding path program 1 times [2020-10-12 11:18:52,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:18:52,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2049833039] [2020-10-12 11:18:52,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:18:52,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:52,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:52,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:52,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:53,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:53,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:56,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:57,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:57,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-12 11:18:57,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 11:18:57,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-12 11:18:57,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:57,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:18:57,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:18:57,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 11:18:57,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:57,300 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:18:57,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:18:57,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:57,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:57,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:57,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:18:57,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:57,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 11:18:57,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:57,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:18:57,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:18:57,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:18:57,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:57,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:18:57,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:57,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:57,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:57,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:57,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:18:57,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:18:57,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 11:18:57,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:57,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:18:57,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:18:57,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:18:57,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:57,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:18:57,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:57,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:57,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:57,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 11:18:57,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:57,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-12 11:18:57,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:57,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:18:57,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:18:57,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 11:18:57,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:57,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 11:18:57,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:57,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:57,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:57,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 11:18:57,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:57,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 11:18:57,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:57,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:18:57,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 11:18:57,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:18:57,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:57,670 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 62 proven. 35 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-12 11:18:57,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2049833039] [2020-10-12 11:18:57,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:18:57,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:18:57,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126014093] [2020-10-12 11:18:57,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:18:57,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:18:57,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:18:57,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:18:57,673 INFO L87 Difference]: Start difference. First operand 5495 states and 6990 transitions. Second operand 7 states. [2020-10-12 11:18:57,840 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:18:59,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:18:59,706 INFO L93 Difference]: Finished difference Result 10722 states and 13740 transitions. [2020-10-12 11:18:59,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 11:18:59,707 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 237 [2020-10-12 11:18:59,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:18:59,732 INFO L225 Difference]: With dead ends: 10722 [2020-10-12 11:18:59,732 INFO L226 Difference]: Without dead ends: 5493 [2020-10-12 11:18:59,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-12 11:18:59,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5493 states. [2020-10-12 11:18:59,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5493 to 5461. [2020-10-12 11:18:59,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5461 states. [2020-10-12 11:18:59,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5461 states to 5461 states and 6768 transitions. [2020-10-12 11:18:59,880 INFO L78 Accepts]: Start accepts. Automaton has 5461 states and 6768 transitions. Word has length 237 [2020-10-12 11:18:59,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:18:59,881 INFO L479 AbstractCegarLoop]: Abstraction has 5461 states and 6768 transitions. [2020-10-12 11:18:59,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:18:59,881 INFO L276 IsEmpty]: Start isEmpty. Operand 5461 states and 6768 transitions. [2020-10-12 11:18:59,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-12 11:18:59,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:18:59,896 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:18:59,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 11:18:59,897 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:18:59,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:18:59,897 INFO L82 PathProgramCache]: Analyzing trace with hash 32086049, now seen corresponding path program 1 times [2020-10-12 11:18:59,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:18:59,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201636306] [2020-10-12 11:18:59,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:18:59,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:00,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:00,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:01,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:01,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:01,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-12 11:19:01,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:19:01,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1620 [2020-10-12 11:19:01,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:01,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 11:19:01,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:19:01,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 254 [2020-10-12 11:19:01,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:01,810 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:19:01,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:19:01,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:01,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:01,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:01,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:19:01,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:01,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 11:19:01,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:01,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:19:01,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:19:01,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:19:01,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:01,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:19:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:01,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:01,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:01,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:19:01,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:01,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-12 11:19:01,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:01,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:19:01,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:19:01,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:19:01,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:01,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:19:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:02,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:02,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:02,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 11:19:02,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:02,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-12 11:19:02,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:02,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:19:02,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:19:02,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 11:19:02,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:02,214 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-12 11:19:02,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201636306] [2020-10-12 11:19:02,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:19:02,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:19:02,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271614156] [2020-10-12 11:19:02,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:19:02,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:19:02,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:19:02,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:19:02,217 INFO L87 Difference]: Start difference. First operand 5461 states and 6768 transitions. Second operand 8 states. [2020-10-12 11:19:02,388 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 11:19:02,661 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:19:03,838 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:19:07,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:19:07,915 INFO L93 Difference]: Finished difference Result 21518 states and 28594 transitions. [2020-10-12 11:19:07,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 11:19:07,916 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 248 [2020-10-12 11:19:07,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:19:07,991 INFO L225 Difference]: With dead ends: 21518 [2020-10-12 11:19:07,991 INFO L226 Difference]: Without dead ends: 16323 [2020-10-12 11:19:08,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2020-10-12 11:19:08,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16323 states. [2020-10-12 11:19:08,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16323 to 16120. [2020-10-12 11:19:08,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16120 states. [2020-10-12 11:19:08,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16120 states to 16120 states and 20006 transitions. [2020-10-12 11:19:08,460 INFO L78 Accepts]: Start accepts. Automaton has 16120 states and 20006 transitions. Word has length 248 [2020-10-12 11:19:08,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:19:08,461 INFO L479 AbstractCegarLoop]: Abstraction has 16120 states and 20006 transitions. [2020-10-12 11:19:08,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:19:08,461 INFO L276 IsEmpty]: Start isEmpty. Operand 16120 states and 20006 transitions. [2020-10-12 11:19:08,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-10-12 11:19:08,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:19:08,500 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:19:08,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 11:19:08,500 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:19:08,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:19:08,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1729719606, now seen corresponding path program 1 times [2020-10-12 11:19:08,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:19:08,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813110121] [2020-10-12 11:19:08,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:19:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:08,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:08,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:09,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:11,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:11,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:12,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:13,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:13,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:13,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:13,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:13,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-12 11:19:13,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 11:19:13,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5110 [2020-10-12 11:19:13,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:13,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 11:19:13,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:19:13,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-12 11:19:13,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:13,907 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:19:13,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:19:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:13,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:13,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:13,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:19:13,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:13,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 11:19:13,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:13,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:19:13,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:19:13,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:19:13,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:14,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:19:14,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:14,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:14,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:14,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:14,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:19:14,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:19:14,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-12 11:19:14,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:14,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:19:14,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:19:14,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:19:14,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:14,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:19:14,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:14,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:14,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:14,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 11:19:14,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:14,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-12 11:19:14,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:14,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:19:14,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:19:14,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 11:19:14,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:14,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-12 11:19:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:14,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:14,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:14,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 11:19:14,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:14,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-10-12 11:19:14,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:14,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:19:14,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:19:14,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 11:19:14,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:14,851 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 121 proven. 43 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-12 11:19:14,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813110121] [2020-10-12 11:19:14,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:19:14,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:19:14,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954877877] [2020-10-12 11:19:14,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 11:19:14,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:19:14,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 11:19:14,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-12 11:19:14,853 INFO L87 Difference]: Start difference. First operand 16120 states and 20006 transitions. Second operand 9 states. [2020-10-12 11:19:15,037 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:19:15,449 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 132 [2020-10-12 11:19:18,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:19:18,451 INFO L93 Difference]: Finished difference Result 33701 states and 41701 transitions. [2020-10-12 11:19:18,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 11:19:18,452 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 299 [2020-10-12 11:19:18,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:19:18,514 INFO L225 Difference]: With dead ends: 33701 [2020-10-12 11:19:18,514 INFO L226 Difference]: Without dead ends: 17847 [2020-10-12 11:19:18,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-12 11:19:18,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17847 states. [2020-10-12 11:19:18,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17847 to 17794. [2020-10-12 11:19:18,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17794 states. [2020-10-12 11:19:18,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17794 states to 17794 states and 21911 transitions. [2020-10-12 11:19:18,910 INFO L78 Accepts]: Start accepts. Automaton has 17794 states and 21911 transitions. Word has length 299 [2020-10-12 11:19:18,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:19:18,911 INFO L479 AbstractCegarLoop]: Abstraction has 17794 states and 21911 transitions. [2020-10-12 11:19:18,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 11:19:18,911 INFO L276 IsEmpty]: Start isEmpty. Operand 17794 states and 21911 transitions. [2020-10-12 11:19:18,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-12 11:19:18,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:19:18,959 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:19:18,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 11:19:18,960 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:19:18,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:19:18,960 INFO L82 PathProgramCache]: Analyzing trace with hash -2140103379, now seen corresponding path program 1 times [2020-10-12 11:19:18,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:19:18,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520938058] [2020-10-12 11:19:18,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:19:19,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:19,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:19,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:20,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:22,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:22,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-12 11:19:22,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:19:22,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3113 [2020-10-12 11:19:22,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:22,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:19:22,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:19:22,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-12 11:19:22,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:22,361 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:19:22,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:19:22,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:22,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:22,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:22,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:19:22,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:22,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 11:19:22,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:22,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:19:22,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:19:22,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:19:22,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:22,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:19:22,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:22,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:22,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:22,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:22,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:19:22,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:19:22,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 11:19:22,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:22,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:19:22,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:19:22,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:19:22,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:22,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:19:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:22,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:22,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:22,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-12 11:19:22,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:22,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-12 11:19:22,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:22,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:19:22,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:19:22,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-12 11:19:22,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:22,906 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-12 11:19:22,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520938058] [2020-10-12 11:19:22,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:19:22,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:19:22,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935935202] [2020-10-12 11:19:22,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:19:22,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:19:22,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:19:22,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:19:22,909 INFO L87 Difference]: Start difference. First operand 17794 states and 21911 transitions. Second operand 7 states. [2020-10-12 11:19:23,084 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:19:24,404 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:19:26,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:19:26,081 INFO L93 Difference]: Finished difference Result 44134 states and 56979 transitions. [2020-10-12 11:19:26,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 11:19:26,081 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 302 [2020-10-12 11:19:26,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:19:26,182 INFO L225 Difference]: With dead ends: 44134 [2020-10-12 11:19:26,182 INFO L226 Difference]: Without dead ends: 27233 [2020-10-12 11:19:26,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:19:26,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27233 states. [2020-10-12 11:19:26,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27233 to 26947. [2020-10-12 11:19:26,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26947 states. [2020-10-12 11:19:27,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26947 states to 26947 states and 33524 transitions. [2020-10-12 11:19:27,039 INFO L78 Accepts]: Start accepts. Automaton has 26947 states and 33524 transitions. Word has length 302 [2020-10-12 11:19:27,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:19:27,040 INFO L479 AbstractCegarLoop]: Abstraction has 26947 states and 33524 transitions. [2020-10-12 11:19:27,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:19:27,040 INFO L276 IsEmpty]: Start isEmpty. Operand 26947 states and 33524 transitions. [2020-10-12 11:19:27,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-12 11:19:27,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:19:27,101 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:19:27,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 11:19:27,102 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:19:27,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:19:27,102 INFO L82 PathProgramCache]: Analyzing trace with hash -923019820, now seen corresponding path program 1 times [2020-10-12 11:19:27,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:19:27,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [971168763] [2020-10-12 11:19:27,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:19:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:27,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:27,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:27,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:32,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:32,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-12 11:19:32,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:19:32,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-12 11:19:32,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:32,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:19:32,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:19:32,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 11:19:32,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:32,368 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:19:32,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:19:32,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:32,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:32,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:32,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:19:32,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:32,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 11:19:32,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:32,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:19:32,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:19:32,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:19:32,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:32,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:19:32,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:32,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:32,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:32,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 11:19:32,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:32,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-12 11:19:32,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:32,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:19:32,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:19:32,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 11:19:32,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:32,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 11:19:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:32,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:32,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:32,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 11:19:32,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:32,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-12 11:19:32,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:32,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:19:32,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-12 11:19:32,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:19:32,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:32,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-12 11:19:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:32,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:32,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:32,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 11:19:32,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:32,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 11:19:32,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:32,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:19:32,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-12 11:19:32,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:19:32,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:32,796 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 125 proven. 49 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-10-12 11:19:32,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [971168763] [2020-10-12 11:19:32,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:19:32,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:19:32,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137695093] [2020-10-12 11:19:32,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:19:32,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:19:32,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:19:32,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:19:32,798 INFO L87 Difference]: Start difference. First operand 26947 states and 33524 transitions. Second operand 7 states. [2020-10-12 11:19:33,038 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-12 11:19:33,795 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 11:19:36,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:19:36,135 INFO L93 Difference]: Finished difference Result 66087 states and 81602 transitions. [2020-10-12 11:19:36,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 11:19:36,136 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 305 [2020-10-12 11:19:36,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:19:36,223 INFO L225 Difference]: With dead ends: 66087 [2020-10-12 11:19:36,224 INFO L226 Difference]: Without dead ends: 39406 [2020-10-12 11:19:36,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:19:36,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39406 states. [2020-10-12 11:19:36,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39406 to 39262. [2020-10-12 11:19:36,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39262 states. [2020-10-12 11:19:36,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39262 states to 39262 states and 47666 transitions. [2020-10-12 11:19:36,997 INFO L78 Accepts]: Start accepts. Automaton has 39262 states and 47666 transitions. Word has length 305 [2020-10-12 11:19:36,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:19:36,998 INFO L479 AbstractCegarLoop]: Abstraction has 39262 states and 47666 transitions. [2020-10-12 11:19:36,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:19:36,998 INFO L276 IsEmpty]: Start isEmpty. Operand 39262 states and 47666 transitions. [2020-10-12 11:19:37,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-12 11:19:37,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:19:37,043 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:19:37,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 11:19:37,043 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:19:37,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:19:37,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1512733750, now seen corresponding path program 1 times [2020-10-12 11:19:37,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:19:37,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1420666591] [2020-10-12 11:19:37,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:19:37,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:37,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:37,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:37,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:37,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:37,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:38,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:39,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:39,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:40,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:42,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:42,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-12 11:19:42,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 11:19:42,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-12 11:19:42,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:42,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:19:42,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:19:42,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-12 11:19:42,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:42,338 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:19:42,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:19:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:42,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:42,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:42,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:19:42,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:42,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 11:19:42,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:42,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:19:42,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:19:42,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:19:42,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:42,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:19:42,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:42,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:42,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:42,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 11:19:42,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:42,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-12 11:19:42,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:42,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:19:42,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:19:42,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 11:19:42,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:42,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 11:19:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:42,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:42,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:42,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:42,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 11:19:42,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:19:42,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 11:19:42,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:42,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:19:42,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:19:42,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 11:19:42,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:42,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 11:19:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:42,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:42,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:42,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 11:19:42,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:42,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 11:19:42,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:42,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:19:42,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-12 11:19:42,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:19:42,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:43,225 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 132 proven. 27 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 11:19:43,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1420666591] [2020-10-12 11:19:43,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:19:43,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:19:43,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608115307] [2020-10-12 11:19:43,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:19:43,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:19:43,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:19:43,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:19:43,227 INFO L87 Difference]: Start difference. First operand 39262 states and 47666 transitions. Second operand 8 states. [2020-10-12 11:19:43,390 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:19:44,528 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 11:19:46,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:19:46,921 INFO L93 Difference]: Finished difference Result 86677 states and 105652 transitions. [2020-10-12 11:19:46,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 11:19:46,922 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 306 [2020-10-12 11:19:46,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:19:47,018 INFO L225 Difference]: With dead ends: 86677 [2020-10-12 11:19:47,018 INFO L226 Difference]: Without dead ends: 48103 [2020-10-12 11:19:47,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-12 11:19:47,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48103 states. [2020-10-12 11:19:47,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48103 to 47927. [2020-10-12 11:19:47,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47927 states. [2020-10-12 11:19:47,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47927 states to 47927 states and 57988 transitions. [2020-10-12 11:19:47,821 INFO L78 Accepts]: Start accepts. Automaton has 47927 states and 57988 transitions. Word has length 306 [2020-10-12 11:19:47,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:19:47,821 INFO L479 AbstractCegarLoop]: Abstraction has 47927 states and 57988 transitions. [2020-10-12 11:19:47,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:19:47,822 INFO L276 IsEmpty]: Start isEmpty. Operand 47927 states and 57988 transitions. [2020-10-12 11:19:47,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-12 11:19:47,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:19:47,871 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:19:47,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 11:19:47,871 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:19:47,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:19:47,872 INFO L82 PathProgramCache]: Analyzing trace with hash -446148760, now seen corresponding path program 1 times [2020-10-12 11:19:47,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:19:47,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4995106] [2020-10-12 11:19:47,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:19:47,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:47,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:48,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:48,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:48,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:49,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:52,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:52,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-12 11:19:52,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:19:52,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-12 11:19:52,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:52,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:19:52,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:19:52,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 11:19:52,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:53,185 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:19:53,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:19:53,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:53,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:53,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:53,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:19:53,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:53,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 11:19:53,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:53,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:19:53,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:19:53,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:19:53,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:53,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:19:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:53,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:53,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:53,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:19:53,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:53,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-12 11:19:53,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:53,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:19:53,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:19:53,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:19:53,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:53,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:19:53,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:53,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:53,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:53,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 11:19:53,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:53,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-12 11:19:53,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:53,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:19:53,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:19:53,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 11:19:53,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:53,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 11:19:53,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:53,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:53,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:53,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 11:19:53,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:53,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-12 11:19:53,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:53,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:19:53,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-12 11:19:53,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:19:53,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:53,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-12 11:19:53,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:53,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:53,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:53,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 11:19:53,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:53,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 11:19:53,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:53,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:19:53,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-12 11:19:53,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:19:53,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:53,994 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 136 proven. 56 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-10-12 11:19:53,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4995106] [2020-10-12 11:19:53,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:19:53,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:19:53,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512148189] [2020-10-12 11:19:53,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:19:53,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:19:53,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:19:53,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:19:53,995 INFO L87 Difference]: Start difference. First operand 47927 states and 57988 transitions. Second operand 7 states. [2020-10-12 11:19:54,162 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 11:19:57,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:19:57,583 INFO L93 Difference]: Finished difference Result 130778 states and 162464 transitions. [2020-10-12 11:19:57,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 11:19:57,584 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 310 [2020-10-12 11:19:57,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:19:57,769 INFO L225 Difference]: With dead ends: 130778 [2020-10-12 11:19:57,769 INFO L226 Difference]: Without dead ends: 83539 [2020-10-12 11:19:57,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-12 11:19:57,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83539 states. [2020-10-12 11:20:01,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83539 to 82573. [2020-10-12 11:20:01,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82573 states. [2020-10-12 11:20:01,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82573 states to 82573 states and 99065 transitions. [2020-10-12 11:20:01,638 INFO L78 Accepts]: Start accepts. Automaton has 82573 states and 99065 transitions. Word has length 310 [2020-10-12 11:20:01,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:20:01,638 INFO L479 AbstractCegarLoop]: Abstraction has 82573 states and 99065 transitions. [2020-10-12 11:20:01,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:20:01,639 INFO L276 IsEmpty]: Start isEmpty. Operand 82573 states and 99065 transitions. [2020-10-12 11:20:01,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-10-12 11:20:01,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:20:01,704 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:20:01,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 11:20:01,705 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:20:01,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:20:01,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1467491876, now seen corresponding path program 1 times [2020-10-12 11:20:01,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:20:01,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337178549] [2020-10-12 11:20:01,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:20:01,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:01,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:02,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:02,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:04,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:06,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:06,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 353 [2020-10-12 11:20:06,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:20:06,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 11:20:06,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:06,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:20:06,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:20:06,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 11:20:06,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:07,095 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:20:07,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:20:07,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:07,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:07,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:07,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:20:07,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:07,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 11:20:07,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:07,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:20:07,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:20:07,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:20:07,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:20:07,247 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-12 11:20:07,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:20:07,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:07,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:07,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:07,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:20:07,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:07,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-12 11:20:07,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:07,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:20:07,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:20:07,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:20:07,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:20:07,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:20:07,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:07,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:07,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:07,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 11:20:07,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:07,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-12 11:20:07,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:07,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:20:07,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:20:07,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 11:20:07,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:07,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-12 11:20:07,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:07,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:07,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:07,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 11:20:07,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:07,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-12 11:20:07,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:07,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:20:07,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-12 11:20:07,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:20:07,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:07,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-12 11:20:07,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:07,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:07,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:07,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 11:20:07,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:07,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 11:20:07,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:07,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:20:07,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-12 11:20:07,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:20:07,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:08,120 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 163 proven. 108 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-10-12 11:20:08,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337178549] [2020-10-12 11:20:08,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:20:08,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:20:08,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787485065] [2020-10-12 11:20:08,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:20:08,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:20:08,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:20:08,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:20:08,122 INFO L87 Difference]: Start difference. First operand 82573 states and 99065 transitions. Second operand 8 states. [2020-10-12 11:20:08,277 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 11:20:09,615 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 11:20:12,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:20:12,626 INFO L93 Difference]: Finished difference Result 200450 states and 244793 transitions. [2020-10-12 11:20:12,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 11:20:12,627 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 337 [2020-10-12 11:20:12,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:20:12,921 INFO L225 Difference]: With dead ends: 200450 [2020-10-12 11:20:12,921 INFO L226 Difference]: Without dead ends: 118565 [2020-10-12 11:20:13,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-12 11:20:13,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118565 states. [2020-10-12 11:20:15,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118565 to 117465. [2020-10-12 11:20:15,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117465 states. [2020-10-12 11:20:15,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117465 states to 117465 states and 140821 transitions. [2020-10-12 11:20:15,389 INFO L78 Accepts]: Start accepts. Automaton has 117465 states and 140821 transitions. Word has length 337 [2020-10-12 11:20:15,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:20:15,390 INFO L479 AbstractCegarLoop]: Abstraction has 117465 states and 140821 transitions. [2020-10-12 11:20:15,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:20:15,391 INFO L276 IsEmpty]: Start isEmpty. Operand 117465 states and 140821 transitions. [2020-10-12 11:20:15,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-10-12 11:20:15,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:20:15,466 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:20:15,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 11:20:15,466 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:20:15,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:20:15,467 INFO L82 PathProgramCache]: Analyzing trace with hash 544020586, now seen corresponding path program 1 times [2020-10-12 11:20:15,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:20:15,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697416420] [2020-10-12 11:20:15,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:20:15,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:15,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:15,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:15,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:20,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:20,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 351 [2020-10-12 11:20:20,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:20:20,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-12 11:20:20,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:20,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:20:20,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:20:20,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-12 11:20:20,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:20,807 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:20:20,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:20:20,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:20,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:20,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:20,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:20:20,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:20,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 11:20:20,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:20,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:20:20,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:20:20,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:20:20,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:20:20,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:20:20,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:20,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:21,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:21,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:20:21,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:21,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-12 11:20:21,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:21,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:20:21,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:20:21,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:20:21,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:20:21,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:20:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:21,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:21,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:21,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 11:20:21,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:21,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-12 11:20:21,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:21,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:20:21,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:20:21,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 11:20:21,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:20:21,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 11:20:21,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:22,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:22,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:22,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 11:20:22,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:22,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 11:20:22,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:22,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:20:22,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-12 11:20:22,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:20:22,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:22,284 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 164 proven. 71 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-12 11:20:22,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697416420] [2020-10-12 11:20:22,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:20:22,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:20:22,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641464184] [2020-10-12 11:20:22,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:20:22,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:20:22,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:20:22,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:20:22,289 INFO L87 Difference]: Start difference. First operand 117465 states and 140821 transitions. Second operand 7 states. [2020-10-12 11:20:22,430 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:20:26,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:20:26,017 INFO L93 Difference]: Finished difference Result 276764 states and 337745 transitions. [2020-10-12 11:20:26,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 11:20:26,018 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 337 [2020-10-12 11:20:26,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:20:26,372 INFO L225 Difference]: With dead ends: 276764 [2020-10-12 11:20:26,372 INFO L226 Difference]: Without dead ends: 159987 [2020-10-12 11:20:26,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-12 11:20:26,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159987 states. [2020-10-12 11:20:31,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159987 to 158980. [2020-10-12 11:20:31,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158980 states. [2020-10-12 11:20:31,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158980 states to 158980 states and 191669 transitions. [2020-10-12 11:20:31,755 INFO L78 Accepts]: Start accepts. Automaton has 158980 states and 191669 transitions. Word has length 337 [2020-10-12 11:20:31,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:20:31,755 INFO L479 AbstractCegarLoop]: Abstraction has 158980 states and 191669 transitions. [2020-10-12 11:20:31,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:20:31,756 INFO L276 IsEmpty]: Start isEmpty. Operand 158980 states and 191669 transitions. [2020-10-12 11:20:31,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-10-12 11:20:31,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:20:31,813 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:20:31,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 11:20:31,813 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:20:31,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:20:31,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1483879434, now seen corresponding path program 1 times [2020-10-12 11:20:31,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:20:31,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982281620] [2020-10-12 11:20:31,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:20:31,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:31,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:32,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:32,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:36,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:36,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 355 [2020-10-12 11:20:36,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:20:36,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 11:20:36,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:36,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 11:20:36,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:20:36,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-12 11:20:36,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:37,063 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:20:37,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:20:37,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:37,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:37,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:37,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:20:37,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:37,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:20:37,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:37,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:20:37,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:20:37,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:20:37,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:37,493 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-12 11:20:37,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:20:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:37,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:37,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:37,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:20:37,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:37,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 11:20:37,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:37,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:20:37,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:20:37,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:20:37,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:37,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:20:37,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:37,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:37,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:37,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 11:20:37,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:37,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 11:20:37,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:37,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:20:37,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:20:37,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 11:20:37,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:37,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 11:20:37,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:37,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:37,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:37,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 11:20:37,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:37,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-12 11:20:37,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:37,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:20:37,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:20:37,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 11:20:37,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:37,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-12 11:20:37,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:37,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:37,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:37,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 11:20:37,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:37,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 11:20:37,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:37,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:20:37,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-12 11:20:37,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:20:37,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:38,074 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 183 proven. 70 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-12 11:20:38,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982281620] [2020-10-12 11:20:38,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:20:38,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 11:20:38,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748087434] [2020-10-12 11:20:38,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 11:20:38,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:20:38,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 11:20:38,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 11:20:38,076 INFO L87 Difference]: Start difference. First operand 158980 states and 191669 transitions. Second operand 9 states. [2020-10-12 11:20:38,244 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-12 11:20:46,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:20:46,748 INFO L93 Difference]: Finished difference Result 432394 states and 533508 transitions. [2020-10-12 11:20:46,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 11:20:46,749 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 339 [2020-10-12 11:20:46,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:20:47,526 INFO L225 Difference]: With dead ends: 432394 [2020-10-12 11:20:47,526 INFO L226 Difference]: Without dead ends: 274731 [2020-10-12 11:20:47,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-12 11:20:47,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274731 states. [2020-10-12 11:20:51,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274731 to 272037. [2020-10-12 11:20:51,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272037 states. [2020-10-12 11:20:51,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272037 states to 272037 states and 327051 transitions. [2020-10-12 11:20:51,756 INFO L78 Accepts]: Start accepts. Automaton has 272037 states and 327051 transitions. Word has length 339 [2020-10-12 11:20:51,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:20:51,757 INFO L479 AbstractCegarLoop]: Abstraction has 272037 states and 327051 transitions. [2020-10-12 11:20:51,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 11:20:51,757 INFO L276 IsEmpty]: Start isEmpty. Operand 272037 states and 327051 transitions. [2020-10-12 11:20:51,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-10-12 11:20:51,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:20:51,814 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:20:51,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 11:20:51,814 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:20:51,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:20:51,814 INFO L82 PathProgramCache]: Analyzing trace with hash 722283249, now seen corresponding path program 1 times [2020-10-12 11:20:51,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:20:51,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838115664] [2020-10-12 11:20:51,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:20:51,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat