/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 19:12:05,969 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 19:12:05,971 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 19:12:05,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 19:12:05,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 19:12:05,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 19:12:05,997 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 19:12:05,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 19:12:06,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 19:12:06,001 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 19:12:06,002 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 19:12:06,003 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 19:12:06,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 19:12:06,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 19:12:06,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 19:12:06,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 19:12:06,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 19:12:06,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 19:12:06,009 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 19:12:06,011 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 19:12:06,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 19:12:06,013 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 19:12:06,015 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 19:12:06,015 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 19:12:06,018 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 19:12:06,018 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 19:12:06,018 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 19:12:06,019 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 19:12:06,020 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 19:12:06,021 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 19:12:06,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 19:12:06,021 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 19:12:06,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 19:12:06,023 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 19:12:06,024 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 19:12:06,024 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 19:12:06,025 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 19:12:06,025 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 19:12:06,025 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 19:12:06,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 19:12:06,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 19:12:06,027 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 [2020-10-14 19:12:06,049 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 19:12:06,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 19:12:06,050 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 19:12:06,050 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 19:12:06,051 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 19:12:06,051 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 19:12:06,051 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 19:12:06,051 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 19:12:06,051 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 19:12:06,052 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 19:12:06,052 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 19:12:06,052 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 19:12:06,052 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 19:12:06,052 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 19:12:06,053 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 19:12:06,053 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 19:12:06,053 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 19:12:06,053 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 19:12:06,053 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 19:12:06,054 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 19:12:06,054 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 19:12:06,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:12:06,054 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 19:12:06,054 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 19:12:06,055 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 19:12:06,055 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 19:12:06,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 19:12:06,055 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 19:12:06,055 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 19:12:06,056 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 19:12:06,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 19:12:06,402 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 19:12:06,406 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 19:12:06,407 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 19:12:06,408 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 19:12:06,409 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label28.c [2020-10-14 19:12:06,474 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55e5e3c54/ef165cb7e2774fec9c5075a8c3117482/FLAG09a632347 [2020-10-14 19:12:07,098 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 19:12:07,098 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label28.c [2020-10-14 19:12:07,115 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55e5e3c54/ef165cb7e2774fec9c5075a8c3117482/FLAG09a632347 [2020-10-14 19:12:07,279 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55e5e3c54/ef165cb7e2774fec9c5075a8c3117482 [2020-10-14 19:12:07,289 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 19:12:07,291 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 19:12:07,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 19:12:07,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 19:12:07,298 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 19:12:07,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:12:07" (1/1) ... [2020-10-14 19:12:07,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71e0f281 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:12:07, skipping insertion in model container [2020-10-14 19:12:07,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:12:07" (1/1) ... [2020-10-14 19:12:07,312 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 19:12:07,397 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 19:12:08,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:12:08,316 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 19:12:08,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:12:08,744 INFO L208 MainTranslator]: Completed translation [2020-10-14 19:12:08,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:12:08 WrapperNode [2020-10-14 19:12:08,745 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 19:12:08,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 19:12:08,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 19:12:08,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 19:12:08,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:12:08" (1/1) ... [2020-10-14 19:12:08,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:12:08" (1/1) ... [2020-10-14 19:12:08,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:12:08" (1/1) ... [2020-10-14 19:12:08,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:12:08" (1/1) ... [2020-10-14 19:12:08,873 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:12:08" (1/1) ... [2020-10-14 19:12:08,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:12:08" (1/1) ... [2020-10-14 19:12:08,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:12:08" (1/1) ... [2020-10-14 19:12:08,925 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 19:12:08,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 19:12:08,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 19:12:08,926 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 19:12:08,927 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:12:08" (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 [2020-10-14 19:12:08,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 19:12:08,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 19:12:08,994 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 19:12:08,994 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 19:12:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 19:12:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 19:12:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 19:12:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 19:12:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 19:12:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 19:12:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 19:12:10,970 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 19:12:10,970 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 19:12:10,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:12:10 BoogieIcfgContainer [2020-10-14 19:12:10,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 19:12:10,987 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 19:12:10,987 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 19:12:10,990 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 19:12:10,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:12:07" (1/3) ... [2020-10-14 19:12:10,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca2ec90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:12:10, skipping insertion in model container [2020-10-14 19:12:10,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:12:08" (2/3) ... [2020-10-14 19:12:10,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca2ec90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:12:10, skipping insertion in model container [2020-10-14 19:12:10,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:12:10" (3/3) ... [2020-10-14 19:12:10,996 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label28.c [2020-10-14 19:12:11,007 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 19:12:11,019 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 19:12:11,034 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 19:12:11,068 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 19:12:11,069 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 19:12:11,070 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 19:12:11,070 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 19:12:11,070 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 19:12:11,070 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 19:12:11,070 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 19:12:11,070 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 19:12:11,108 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-14 19:12:11,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-14 19:12:11,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:12:11,131 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] [2020-10-14 19:12:11,132 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:12:11,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:12:11,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1343441115, now seen corresponding path program 1 times [2020-10-14 19:12:11,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:12:11,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352354162] [2020-10-14 19:12:11,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:12:11,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:11,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:12,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:15,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:15,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 19:12:15,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:12:15,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3569 [2020-10-14 19:12:15,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:15,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:15,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:12:15,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:12:15,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-14 19:12:15,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 19:12:15,649 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:12:15,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:12:15,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:15,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:15,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:15,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:12:15,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:15,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 19:12:15,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:15,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:15,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:12:15,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:15,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:12:15,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:12:15,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:12:15,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352354162] [2020-10-14 19:12:15,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:12:15,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 19:12:15,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72062844] [2020-10-14 19:12:15,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 19:12:15,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:12:15,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 19:12:15,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 19:12:15,797 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 4 states. [2020-10-14 19:12:15,998 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:12:18,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:12:18,688 INFO L93 Difference]: Finished difference Result 839 states and 1485 transitions. [2020-10-14 19:12:18,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:12:18,691 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2020-10-14 19:12:18,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:12:18,711 INFO L225 Difference]: With dead ends: 839 [2020-10-14 19:12:18,712 INFO L226 Difference]: Without dead ends: 464 [2020-10-14 19:12:18,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:12:18,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-10-14 19:12:18,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 460. [2020-10-14 19:12:18,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-10-14 19:12:18,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 651 transitions. [2020-10-14 19:12:18,811 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 651 transitions. Word has length 158 [2020-10-14 19:12:18,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:12:18,813 INFO L479 AbstractCegarLoop]: Abstraction has 460 states and 651 transitions. [2020-10-14 19:12:18,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 19:12:18,813 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 651 transitions. [2020-10-14 19:12:18,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 19:12:18,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:12:18,819 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 19:12:18,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 19:12:18,820 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:12:18,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:12:18,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1075620975, now seen corresponding path program 1 times [2020-10-14 19:12:18,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:12:18,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019733796] [2020-10-14 19:12:18,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:12:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:19,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:19,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:21,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:21,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-14 19:12:21,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:12:21,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2948 [2020-10-14 19:12:21,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:21,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:21,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:21,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 19:12:21,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-14 19:12:21,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:12:22,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:12:22,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:22,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:22,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:22,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:12:22,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:22,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:12:22,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:22,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:22,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:22,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:22,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:22,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 19:12:22,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:12:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:22,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:22,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:22,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:12:22,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:22,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 19:12:22,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:22,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:22,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:12:22,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:22,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 19:12:22,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:12:22,295 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:12:22,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019733796] [2020-10-14 19:12:22,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:12:22,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:12:22,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595234008] [2020-10-14 19:12:22,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:12:22,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:12:22,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:12:22,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:12:22,302 INFO L87 Difference]: Start difference. First operand 460 states and 651 transitions. Second operand 5 states. [2020-10-14 19:12:22,592 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:12:25,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:12:25,154 INFO L93 Difference]: Finished difference Result 1352 states and 1931 transitions. [2020-10-14 19:12:25,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:12:25,155 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-14 19:12:25,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:12:25,164 INFO L225 Difference]: With dead ends: 1352 [2020-10-14 19:12:25,164 INFO L226 Difference]: Without dead ends: 898 [2020-10-14 19:12:25,167 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 [2020-10-14 19:12:25,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2020-10-14 19:12:25,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 892. [2020-10-14 19:12:25,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 892 states. [2020-10-14 19:12:25,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1199 transitions. [2020-10-14 19:12:25,228 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1199 transitions. Word has length 170 [2020-10-14 19:12:25,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:12:25,229 INFO L479 AbstractCegarLoop]: Abstraction has 892 states and 1199 transitions. [2020-10-14 19:12:25,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:12:25,229 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1199 transitions. [2020-10-14 19:12:25,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-14 19:12:25,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:12:25,248 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-14 19:12:25,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 19:12:25,250 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:12:25,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:12:25,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1001881878, now seen corresponding path program 1 times [2020-10-14 19:12:25,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:12:25,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598020945] [2020-10-14 19:12:25,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:12:25,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:25,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:25,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:25,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:25,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:26,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:28,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:28,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:30,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:30,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-14 19:12:30,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 19:12:30,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 19:12:30,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:30,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:30,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:12:30,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 19:12:30,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-14 19:12:30,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:12:30,568 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:12:30,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:12:30,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:30,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:30,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:30,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:12:30,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:30,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:12:30,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:30,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:30,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:30,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:30,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:30,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:12:30,714 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-14 19:12:30,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:12:30,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:30,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:30,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:30,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:12:30,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:30,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 19:12:30,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:30,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:30,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:30,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:30,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:30,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 19:12:30,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:12:30,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:30,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:30,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:30,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:30,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:12:30,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:12:30,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 19:12:30,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:30,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:30,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:12:30,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:30,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 19:12:30,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:12:30,906 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 19:12:30,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598020945] [2020-10-14 19:12:30,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:12:30,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:12:30,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173211708] [2020-10-14 19:12:30,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:12:30,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:12:30,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:12:30,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:12:30,919 INFO L87 Difference]: Start difference. First operand 892 states and 1199 transitions. Second operand 5 states. [2020-10-14 19:12:31,381 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:12:34,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:12:34,082 INFO L93 Difference]: Finished difference Result 2621 states and 3548 transitions. [2020-10-14 19:12:34,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:12:34,083 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2020-10-14 19:12:34,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:12:34,092 INFO L225 Difference]: With dead ends: 2621 [2020-10-14 19:12:34,092 INFO L226 Difference]: Without dead ends: 895 [2020-10-14 19:12:34,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:12:34,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2020-10-14 19:12:34,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 891. [2020-10-14 19:12:34,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-10-14 19:12:34,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1197 transitions. [2020-10-14 19:12:34,155 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1197 transitions. Word has length 180 [2020-10-14 19:12:34,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:12:34,156 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1197 transitions. [2020-10-14 19:12:34,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:12:34,156 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1197 transitions. [2020-10-14 19:12:34,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-14 19:12:34,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:12:34,160 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 19:12:34,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 19:12:34,161 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:12:34,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:12:34,161 INFO L82 PathProgramCache]: Analyzing trace with hash 79322521, now seen corresponding path program 1 times [2020-10-14 19:12:34,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:12:34,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829426013] [2020-10-14 19:12:34,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:12:34,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:34,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:34,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:35,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:38,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:38,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-14 19:12:38,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:12:38,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4750 [2020-10-14 19:12:38,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:38,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:38,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:38,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 19:12:38,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-14 19:12:38,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:12:39,201 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:12:39,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:12:39,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:39,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:39,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:39,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:12:39,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:39,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:12:39,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:39,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:39,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:39,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:39,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:39,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:12:39,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:12:39,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:39,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:39,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:39,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:12:39,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:39,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 19:12:39,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:39,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:39,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:39,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:39,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:39,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 19:12:39,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:12:39,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:39,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:39,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:39,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 19:12:39,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:39,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 19:12:39,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:39,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:39,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:12:39,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:39,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 19:12:39,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:39,438 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 19:12:39,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1829426013] [2020-10-14 19:12:39,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:12:39,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:12:39,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107417550] [2020-10-14 19:12:39,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:12:39,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:12:39,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:12:39,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:12:39,443 INFO L87 Difference]: Start difference. First operand 891 states and 1197 transitions. Second operand 5 states. [2020-10-14 19:12:39,700 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:12:42,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:12:42,383 INFO L93 Difference]: Finished difference Result 2626 states and 3584 transitions. [2020-10-14 19:12:42,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:12:42,391 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-14 19:12:42,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:12:42,402 INFO L225 Difference]: With dead ends: 2626 [2020-10-14 19:12:42,402 INFO L226 Difference]: Without dead ends: 1741 [2020-10-14 19:12:42,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:12:42,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2020-10-14 19:12:42,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 1731. [2020-10-14 19:12:42,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2020-10-14 19:12:42,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2274 transitions. [2020-10-14 19:12:42,465 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2274 transitions. Word has length 184 [2020-10-14 19:12:42,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:12:42,466 INFO L479 AbstractCegarLoop]: Abstraction has 1731 states and 2274 transitions. [2020-10-14 19:12:42,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:12:42,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2274 transitions. [2020-10-14 19:12:42,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-14 19:12:42,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:12:42,475 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 19:12:42,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 19:12:42,475 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:12:42,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:12:42,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1421190507, now seen corresponding path program 1 times [2020-10-14 19:12:42,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:12:42,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975922114] [2020-10-14 19:12:42,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:12:42,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:42,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:42,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:43,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:44,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:45,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:47,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:47,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-14 19:12:47,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:12:47,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 19:12:47,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:47,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:47,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:47,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 19:12:47,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-14 19:12:47,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:47,785 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:12:47,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:12:47,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:47,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:47,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:47,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:12:47,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:47,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:12:47,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:47,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:47,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:47,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:47,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:47,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:47,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:12:47,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:47,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:47,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:47,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:12:47,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:47,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:12:47,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:47,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:47,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:47,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:47,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:47,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:47,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:12:47,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:47,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:47,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:47,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:12:47,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:47,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:12:47,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:47,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:47,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:47,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:47,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:47,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:47,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 19:12:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:47,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:47,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:47,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 19:12:47,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:47,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 19:12:47,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:47,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:47,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:12:47,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:47,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 19:12:47,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:47,995 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-14 19:12:47,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975922114] [2020-10-14 19:12:47,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:12:47,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:12:47,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228700357] [2020-10-14 19:12:47,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:12:47,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:12:47,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:12:47,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:12:47,998 INFO L87 Difference]: Start difference. First operand 1731 states and 2274 transitions. Second operand 5 states. [2020-10-14 19:12:48,229 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:12:50,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:12:50,954 INFO L93 Difference]: Finished difference Result 4300 states and 5889 transitions. [2020-10-14 19:12:50,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:12:50,955 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 199 [2020-10-14 19:12:50,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:12:50,973 INFO L225 Difference]: With dead ends: 4300 [2020-10-14 19:12:50,973 INFO L226 Difference]: Without dead ends: 2575 [2020-10-14 19:12:50,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:12:50,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2575 states. [2020-10-14 19:12:51,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2575 to 2569. [2020-10-14 19:12:51,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2569 states. [2020-10-14 19:12:51,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2569 states to 2569 states and 3499 transitions. [2020-10-14 19:12:51,068 INFO L78 Accepts]: Start accepts. Automaton has 2569 states and 3499 transitions. Word has length 199 [2020-10-14 19:12:51,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:12:51,069 INFO L479 AbstractCegarLoop]: Abstraction has 2569 states and 3499 transitions. [2020-10-14 19:12:51,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:12:51,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2569 states and 3499 transitions. [2020-10-14 19:12:51,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-14 19:12:51,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:12:51,078 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:12:51,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 19:12:51,079 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:12:51,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:12:51,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1294457890, now seen corresponding path program 1 times [2020-10-14 19:12:51,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:12:51,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082068137] [2020-10-14 19:12:51,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:12:51,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:51,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:51,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:53,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:54,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:56,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:56,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-14 19:12:56,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:12:56,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-14 19:12:56,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:56,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:56,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:56,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-14 19:12:56,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-14 19:12:56,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:12:56,416 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:12:56,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:12:56,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:56,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:56,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:56,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:12:56,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:56,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:12:56,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:56,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:56,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:56,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:56,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:56,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:12:56,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:12:56,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:56,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:56,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:56,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:12:56,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:56,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 19:12:56,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:56,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:56,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:56,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:56,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:56,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:12:56,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:12:56,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:56,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:56,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:56,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 19:12:56,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:56,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 19:12:56,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:56,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:56,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:12:56,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:56,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 19:12:56,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:12:56,685 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 19:12:56,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082068137] [2020-10-14 19:12:56,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:12:56,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:12:56,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736253359] [2020-10-14 19:12:56,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:12:56,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:12:56,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:12:56,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:12:56,688 INFO L87 Difference]: Start difference. First operand 2569 states and 3499 transitions. Second operand 5 states. [2020-10-14 19:12:56,929 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:12:59,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:12:59,430 INFO L93 Difference]: Finished difference Result 7663 states and 10691 transitions. [2020-10-14 19:12:59,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:12:59,431 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 207 [2020-10-14 19:12:59,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:12:59,467 INFO L225 Difference]: With dead ends: 7663 [2020-10-14 19:12:59,467 INFO L226 Difference]: Without dead ends: 5100 [2020-10-14 19:12:59,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:12:59,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5100 states. [2020-10-14 19:12:59,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5100 to 5079. [2020-10-14 19:12:59,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5079 states. [2020-10-14 19:12:59,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5079 states to 5079 states and 6996 transitions. [2020-10-14 19:12:59,655 INFO L78 Accepts]: Start accepts. Automaton has 5079 states and 6996 transitions. Word has length 207 [2020-10-14 19:12:59,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:12:59,655 INFO L479 AbstractCegarLoop]: Abstraction has 5079 states and 6996 transitions. [2020-10-14 19:12:59,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:12:59,656 INFO L276 IsEmpty]: Start isEmpty. Operand 5079 states and 6996 transitions. [2020-10-14 19:12:59,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-14 19:12:59,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:12:59,673 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:12:59,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 19:12:59,673 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:12:59,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:12:59,674 INFO L82 PathProgramCache]: Analyzing trace with hash 903864199, now seen corresponding path program 1 times [2020-10-14 19:12:59,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:12:59,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269150679] [2020-10-14 19:12:59,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:12:59,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:59,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:00,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:00,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-14 19:13:00,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:00,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 900 [2020-10-14 19:13:00,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:00,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:00,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:13:00,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:13:00,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 19:13:00,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:00,792 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:13:00,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:13:00,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:00,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:00,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:00,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:13:00,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:00,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 19:13:00,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:00,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:00,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:13:00,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:00,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:13:00,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:13:00,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:13:00,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:00,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:01,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:01,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 19:13:01,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:01,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-14 19:13:01,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:01,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:01,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:13:01,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:13:01,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 19:13:01,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:01,076 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:13:01,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269150679] [2020-10-14 19:13:01,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:13:01,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 19:13:01,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343142867] [2020-10-14 19:13:01,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:13:01,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:13:01,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:13:01,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:13:01,078 INFO L87 Difference]: Start difference. First operand 5079 states and 6996 transitions. Second operand 7 states. [2020-10-14 19:13:01,222 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:13:03,487 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:13:04,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:13:04,199 INFO L93 Difference]: Finished difference Result 10297 states and 14694 transitions. [2020-10-14 19:13:04,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 19:13:04,200 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 216 [2020-10-14 19:13:04,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:13:04,227 INFO L225 Difference]: With dead ends: 10297 [2020-10-14 19:13:04,227 INFO L226 Difference]: Without dead ends: 5224 [2020-10-14 19:13:04,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:13:04,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5224 states. [2020-10-14 19:13:04,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5224 to 5162. [2020-10-14 19:13:04,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5162 states. [2020-10-14 19:13:04,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5162 states to 5162 states and 6810 transitions. [2020-10-14 19:13:04,403 INFO L78 Accepts]: Start accepts. Automaton has 5162 states and 6810 transitions. Word has length 216 [2020-10-14 19:13:04,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:13:04,403 INFO L479 AbstractCegarLoop]: Abstraction has 5162 states and 6810 transitions. [2020-10-14 19:13:04,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:13:04,403 INFO L276 IsEmpty]: Start isEmpty. Operand 5162 states and 6810 transitions. [2020-10-14 19:13:04,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-14 19:13:04,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:13:04,420 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:13:04,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 19:13:04,421 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:13:04,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:13:04,421 INFO L82 PathProgramCache]: Analyzing trace with hash 466476275, now seen corresponding path program 1 times [2020-10-14 19:13:04,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:13:04,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938272188] [2020-10-14 19:13:04,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:13:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:04,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:04,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:06,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:08,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:08,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 19:13:08,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:13:08,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3949 [2020-10-14 19:13:08,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:08,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:08,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:13:08,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 19:13:08,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 217 [2020-10-14 19:13:08,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:08,628 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:13:08,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:13:08,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:08,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:08,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:08,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:13:08,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:08,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:13:08,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:08,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:08,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:13:08,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:08,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:13:08,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:08,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:13:08,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:08,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:08,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:08,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:13:08,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:08,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 19:13:08,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:08,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:08,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:13:08,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:08,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 19:13:08,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:08,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:13:08,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:08,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:08,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:08,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 19:13:08,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:08,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 19:13:08,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:08,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:08,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:13:08,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:13:08,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 19:13:08,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:08,943 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 16 proven. 55 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 19:13:08,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938272188] [2020-10-14 19:13:08,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:13:08,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 19:13:08,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345490911] [2020-10-14 19:13:08,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 19:13:08,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:13:08,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 19:13:08,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:13:08,946 INFO L87 Difference]: Start difference. First operand 5162 states and 6810 transitions. Second operand 6 states. [2020-10-14 19:13:09,186 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:13:11,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:13:11,988 INFO L93 Difference]: Finished difference Result 15408 states and 22101 transitions. [2020-10-14 19:13:11,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 19:13:11,988 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 228 [2020-10-14 19:13:11,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:13:12,045 INFO L225 Difference]: With dead ends: 15408 [2020-10-14 19:13:12,045 INFO L226 Difference]: Without dead ends: 10252 [2020-10-14 19:13:12,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:13:12,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10252 states. [2020-10-14 19:13:12,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10252 to 9670. [2020-10-14 19:13:12,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9670 states. [2020-10-14 19:13:12,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9670 states to 9670 states and 12586 transitions. [2020-10-14 19:13:12,365 INFO L78 Accepts]: Start accepts. Automaton has 9670 states and 12586 transitions. Word has length 228 [2020-10-14 19:13:12,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:13:12,366 INFO L479 AbstractCegarLoop]: Abstraction has 9670 states and 12586 transitions. [2020-10-14 19:13:12,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 19:13:12,366 INFO L276 IsEmpty]: Start isEmpty. Operand 9670 states and 12586 transitions. [2020-10-14 19:13:12,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-14 19:13:12,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:13:12,396 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:13:12,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 19:13:12,397 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:13:12,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:13:12,397 INFO L82 PathProgramCache]: Analyzing trace with hash 614168787, now seen corresponding path program 1 times [2020-10-14 19:13:12,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:13:12,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933468419] [2020-10-14 19:13:12,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:13:12,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:12,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:12,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:13,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:14,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:14,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 19:13:14,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:13:14,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2404 [2020-10-14 19:13:14,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:14,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:14,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:13:14,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:13:14,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 19:13:14,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:15,017 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:13:15,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:13:15,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:15,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:15,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:15,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:13:15,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:15,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:13:15,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:15,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:15,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:13:15,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:15,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:13:15,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:15,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:13:15,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:15,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:15,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:15,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 19:13:15,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:15,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 19:13:15,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:15,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:15,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:13:15,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:13:15,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 19:13:15,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:15,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 19:13:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:15,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:15,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:15,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 19:13:15,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:15,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 19:13:15,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:15,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:15,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:13:15,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:13:15,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 19:13:15,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:15,448 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 65 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 19:13:15,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933468419] [2020-10-14 19:13:15,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:13:15,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:13:15,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597823610] [2020-10-14 19:13:15,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 19:13:15,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:13:15,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 19:13:15,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-14 19:13:15,451 INFO L87 Difference]: Start difference. First operand 9670 states and 12586 transitions. Second operand 9 states. [2020-10-14 19:13:15,592 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 19:13:15,859 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 19:13:16,980 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 19:13:20,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:13:20,464 INFO L93 Difference]: Finished difference Result 28159 states and 38191 transitions. [2020-10-14 19:13:20,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 19:13:20,464 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 228 [2020-10-14 19:13:20,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:13:20,574 INFO L225 Difference]: With dead ends: 28159 [2020-10-14 19:13:20,574 INFO L226 Difference]: Without dead ends: 18495 [2020-10-14 19:13:20,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2020-10-14 19:13:20,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18495 states. [2020-10-14 19:13:21,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18495 to 18395. [2020-10-14 19:13:21,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18395 states. [2020-10-14 19:13:21,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18395 states to 18395 states and 23925 transitions. [2020-10-14 19:13:21,117 INFO L78 Accepts]: Start accepts. Automaton has 18395 states and 23925 transitions. Word has length 228 [2020-10-14 19:13:21,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:13:21,117 INFO L479 AbstractCegarLoop]: Abstraction has 18395 states and 23925 transitions. [2020-10-14 19:13:21,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 19:13:21,118 INFO L276 IsEmpty]: Start isEmpty. Operand 18395 states and 23925 transitions. [2020-10-14 19:13:21,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-14 19:13:21,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:13:21,180 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:13:21,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 19:13:21,181 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:13:21,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:13:21,182 INFO L82 PathProgramCache]: Analyzing trace with hash -2091244716, now seen corresponding path program 1 times [2020-10-14 19:13:21,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:13:21,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116350258] [2020-10-14 19:13:21,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:13:21,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:21,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:21,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:22,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:24,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:24,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-14 19:13:24,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:13:24,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3684 [2020-10-14 19:13:24,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:24,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:24,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:13:24,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:13:24,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 19:13:24,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:25,071 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:13:25,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:13:25,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:25,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:25,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:25,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:13:25,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:25,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 19:13:25,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:25,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:25,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:13:25,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:25,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:13:25,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:13:25,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:13:25,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:25,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:25,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:25,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 19:13:25,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:25,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 19:13:25,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:25,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:25,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:13:25,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:13:25,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 19:13:25,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:25,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 19:13:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:25,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:25,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:25,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 19:13:25,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:25,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 19:13:25,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:25,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:25,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:13:25,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:13:25,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 19:13:25,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:25,720 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 70 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 19:13:25,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116350258] [2020-10-14 19:13:25,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:13:25,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:13:25,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204142684] [2020-10-14 19:13:25,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:13:25,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:13:25,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:13:25,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:13:25,723 INFO L87 Difference]: Start difference. First operand 18395 states and 23925 transitions. Second operand 8 states. [2020-10-14 19:13:25,868 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:13:26,123 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 19:13:29,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:13:29,935 INFO L93 Difference]: Finished difference Result 43239 states and 62181 transitions. [2020-10-14 19:13:29,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 19:13:29,935 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 233 [2020-10-14 19:13:29,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:13:30,059 INFO L225 Difference]: With dead ends: 43239 [2020-10-14 19:13:30,059 INFO L226 Difference]: Without dead ends: 24850 [2020-10-14 19:13:30,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-10-14 19:13:30,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24850 states. [2020-10-14 19:13:31,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24850 to 23768. [2020-10-14 19:13:31,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23768 states. [2020-10-14 19:13:32,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23768 states to 23768 states and 29978 transitions. [2020-10-14 19:13:32,008 INFO L78 Accepts]: Start accepts. Automaton has 23768 states and 29978 transitions. Word has length 233 [2020-10-14 19:13:32,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:13:32,009 INFO L479 AbstractCegarLoop]: Abstraction has 23768 states and 29978 transitions. [2020-10-14 19:13:32,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:13:32,009 INFO L276 IsEmpty]: Start isEmpty. Operand 23768 states and 29978 transitions. [2020-10-14 19:13:32,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-14 19:13:32,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:13:32,080 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:13:32,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 19:13:32,081 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:13:32,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:13:32,081 INFO L82 PathProgramCache]: Analyzing trace with hash -174928645, now seen corresponding path program 1 times [2020-10-14 19:13:32,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:13:32,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674928621] [2020-10-14 19:13:32,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:13:32,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:32,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:32,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:32,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:37,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:37,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-14 19:13:37,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:13:37,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 19:13:37,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:37,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:37,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:13:37,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 19:13:37,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 19:13:37,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:37,401 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:13:37,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:13:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:37,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:37,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:37,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:13:37,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:37,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:13:37,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:37,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:37,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:13:37,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:37,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:13:37,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:37,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:13:37,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:37,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:37,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:37,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:13:37,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:37,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:13:37,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:37,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:37,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:13:37,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:37,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:13:37,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:37,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:13:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:37,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:37,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:37,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 19:13:37,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:37,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 19:13:37,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:37,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:37,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:13:37,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:37,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 19:13:37,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:37,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 19:13:37,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:37,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:37,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:37,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 19:13:37,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:37,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 19:13:37,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:37,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:37,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:13:37,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:13:37,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 19:13:37,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:13:37,737 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 100 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 19:13:37,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674928621] [2020-10-14 19:13:37,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:13:37,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:13:37,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870462666] [2020-10-14 19:13:37,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:13:37,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:13:37,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:13:37,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:13:37,739 INFO L87 Difference]: Start difference. First operand 23768 states and 29978 transitions. Second operand 7 states. [2020-10-14 19:13:37,871 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:13:38,114 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:13:40,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:13:40,784 INFO L93 Difference]: Finished difference Result 47449 states and 60556 transitions. [2020-10-14 19:13:40,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 19:13:40,785 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 242 [2020-10-14 19:13:40,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:13:40,859 INFO L225 Difference]: With dead ends: 47449 [2020-10-14 19:13:40,859 INFO L226 Difference]: Without dead ends: 23894 [2020-10-14 19:13:40,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:13:40,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23894 states. [2020-10-14 19:13:41,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23894 to 23790. [2020-10-14 19:13:41,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23790 states. [2020-10-14 19:13:41,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23790 states to 23790 states and 28931 transitions. [2020-10-14 19:13:41,376 INFO L78 Accepts]: Start accepts. Automaton has 23790 states and 28931 transitions. Word has length 242 [2020-10-14 19:13:41,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:13:41,376 INFO L479 AbstractCegarLoop]: Abstraction has 23790 states and 28931 transitions. [2020-10-14 19:13:41,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:13:41,376 INFO L276 IsEmpty]: Start isEmpty. Operand 23790 states and 28931 transitions. [2020-10-14 19:13:41,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-14 19:13:41,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:13:41,404 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:13:41,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 19:13:41,404 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:13:41,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:13:41,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1746883844, now seen corresponding path program 1 times [2020-10-14 19:13:41,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:13:41,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853725203] [2020-10-14 19:13:41,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:13:41,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:41,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:41,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:41,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:43,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:46,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:46,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-14 19:13:46,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:13:46,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 19:13:46,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:46,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:46,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:13:46,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-14 19:13:46,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 19:13:46,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:46,636 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:13:46,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:13:46,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:46,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:46,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:46,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:13:46,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:46,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:13:46,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:46,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:46,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:13:46,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:46,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:13:46,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:46,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:13:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:46,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:46,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:46,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:13:46,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:46,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:13:46,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:46,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:46,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:13:46,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:46,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:13:46,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:46,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:13:46,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:46,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:46,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:46,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 19:13:46,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:46,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 19:13:46,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:46,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:46,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:13:46,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:46,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:13:46,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:46,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 19:13:46,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:46,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:46,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:46,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 19:13:46,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:46,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 19:13:46,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:46,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:46,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:13:46,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:46,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 19:13:46,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:46,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-14 19:13:46,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:46,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:46,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:46,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 19:13:46,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:46,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-14 19:13:46,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:46,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:46,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:13:46,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:13:46,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 19:13:46,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:13:47,191 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 161 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-14 19:13:47,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853725203] [2020-10-14 19:13:47,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:13:47,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:13:47,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50371278] [2020-10-14 19:13:47,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:13:47,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:13:47,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:13:47,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:13:47,194 INFO L87 Difference]: Start difference. First operand 23790 states and 28931 transitions. Second operand 7 states. [2020-10-14 19:13:47,435 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:13:49,153 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 19:13:50,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:13:50,622 INFO L93 Difference]: Finished difference Result 54517 states and 70469 transitions. [2020-10-14 19:13:50,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 19:13:50,623 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 273 [2020-10-14 19:13:50,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:13:50,731 INFO L225 Difference]: With dead ends: 54517 [2020-10-14 19:13:50,732 INFO L226 Difference]: Without dead ends: 30940 [2020-10-14 19:13:50,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 19:13:50,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30940 states. [2020-10-14 19:13:51,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30940 to 29829. [2020-10-14 19:13:51,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29829 states. [2020-10-14 19:13:51,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29829 states to 29829 states and 35989 transitions. [2020-10-14 19:13:51,545 INFO L78 Accepts]: Start accepts. Automaton has 29829 states and 35989 transitions. Word has length 273 [2020-10-14 19:13:51,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:13:51,545 INFO L479 AbstractCegarLoop]: Abstraction has 29829 states and 35989 transitions. [2020-10-14 19:13:51,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:13:51,545 INFO L276 IsEmpty]: Start isEmpty. Operand 29829 states and 35989 transitions. [2020-10-14 19:13:51,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-10-14 19:13:51,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:13:51,579 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:13:51,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 19:13:51,580 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:13:51,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:13:51,580 INFO L82 PathProgramCache]: Analyzing trace with hash -224342286, now seen corresponding path program 1 times [2020-10-14 19:13:51,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:13:51,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605519665] [2020-10-14 19:13:51,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:13:51,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:51,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:51,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:53,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:53,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-14 19:13:53,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:13:53,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1983 [2020-10-14 19:13:53,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:53,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:53,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:13:53,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:13:53,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-14 19:13:53,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:53,850 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:13:53,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:13:53,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:53,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:53,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:53,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:13:53,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:53,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 19:13:53,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:53,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:53,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:13:53,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:53,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:13:53,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:53,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:13:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:53,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:54,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:54,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 19:13:54,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:54,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 19:13:54,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:54,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:54,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:13:54,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:13:54,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 19:13:54,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:54,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 19:13:54,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:54,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:54,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:54,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 19:13:54,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:54,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-14 19:13:54,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:54,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:54,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:13:54,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:13:54,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 19:13:54,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:54,447 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 122 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 19:13:54,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605519665] [2020-10-14 19:13:54,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:13:54,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:13:54,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108216322] [2020-10-14 19:13:54,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:13:54,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:13:54,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:13:54,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:13:54,449 INFO L87 Difference]: Start difference. First operand 29829 states and 35989 transitions. Second operand 8 states. [2020-10-14 19:13:54,591 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:13:56,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:13:56,188 INFO L93 Difference]: Finished difference Result 55953 states and 67677 transitions. [2020-10-14 19:13:56,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 19:13:56,188 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 287 [2020-10-14 19:13:56,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:13:56,269 INFO L225 Difference]: With dead ends: 55953 [2020-10-14 19:13:56,269 INFO L226 Difference]: Without dead ends: 26337 [2020-10-14 19:13:56,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 19:13:56,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26337 states. [2020-10-14 19:13:56,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26337 to 25686. [2020-10-14 19:13:56,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25686 states. [2020-10-14 19:13:56,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25686 states to 25686 states and 30751 transitions. [2020-10-14 19:13:56,807 INFO L78 Accepts]: Start accepts. Automaton has 25686 states and 30751 transitions. Word has length 287 [2020-10-14 19:13:56,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:13:56,807 INFO L479 AbstractCegarLoop]: Abstraction has 25686 states and 30751 transitions. [2020-10-14 19:13:56,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:13:56,807 INFO L276 IsEmpty]: Start isEmpty. Operand 25686 states and 30751 transitions. [2020-10-14 19:13:56,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-14 19:13:56,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:13:56,842 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 19:13:56,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 19:13:56,843 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:13:56,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:13:56,843 INFO L82 PathProgramCache]: Analyzing trace with hash 614268483, now seen corresponding path program 1 times [2020-10-14 19:13:56,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:13:56,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267971644] [2020-10-14 19:13:56,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:13:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:56,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:57,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:57,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:57,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:58,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:01,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:01,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:01,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-14 19:14:01,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 19:14:01,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 19:14:01,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:01,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:01,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 19:14:01,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:14:01,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-14 19:14:01,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:02,113 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:14:02,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:14:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:02,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:02,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:02,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:14:02,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:02,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:14:02,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:02,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:02,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:14:02,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:02,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:14:02,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:02,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:14:02,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:02,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:02,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:02,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:02,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:14:02,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:14:02,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 19:14:02,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:02,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:02,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:14:02,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:14:02,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 19:14:02,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:02,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:14:02,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:02,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:02,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:02,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:02,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 19:14:02,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:14:02,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-14 19:14:02,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:02,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:02,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 19:14:02,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:02,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 19:14:02,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:02,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 19:14:02,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:02,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:02,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:02,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 19:14:02,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:02,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 19:14:02,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:02,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:02,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:14:02,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:14:02,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 19:14:02,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:02,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-14 19:14:02,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:02,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:02,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:02,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 19:14:02,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:02,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 19:14:02,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:02,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:02,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:14:02,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:14:02,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 19:14:02,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:02,840 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 234 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-14 19:14:02,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267971644] [2020-10-14 19:14:02,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:14:02,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 19:14:02,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983197697] [2020-10-14 19:14:02,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 19:14:02,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:14:02,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 19:14:02,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-14 19:14:02,842 INFO L87 Difference]: Start difference. First operand 25686 states and 30751 transitions. Second operand 9 states. [2020-10-14 19:14:02,982 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:14:03,231 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 19:14:04,206 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 131 [2020-10-14 19:14:05,243 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 19:14:07,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:14:07,665 INFO L93 Difference]: Finished difference Result 64810 states and 80396 transitions. [2020-10-14 19:14:07,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 19:14:07,666 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 319 [2020-10-14 19:14:07,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:14:07,790 INFO L225 Difference]: With dead ends: 64810 [2020-10-14 19:14:07,790 INFO L226 Difference]: Without dead ends: 39337 [2020-10-14 19:14:07,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2020-10-14 19:14:07,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39337 states. [2020-10-14 19:14:08,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39337 to 37197. [2020-10-14 19:14:08,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37197 states. [2020-10-14 19:14:08,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37197 states to 37197 states and 43656 transitions. [2020-10-14 19:14:08,853 INFO L78 Accepts]: Start accepts. Automaton has 37197 states and 43656 transitions. Word has length 319 [2020-10-14 19:14:08,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:14:08,854 INFO L479 AbstractCegarLoop]: Abstraction has 37197 states and 43656 transitions. [2020-10-14 19:14:08,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 19:14:08,854 INFO L276 IsEmpty]: Start isEmpty. Operand 37197 states and 43656 transitions. [2020-10-14 19:14:08,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-10-14 19:14:08,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:14:08,879 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:14:08,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 19:14:08,879 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:14:08,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:14:08,880 INFO L82 PathProgramCache]: Analyzing trace with hash -2117598082, now seen corresponding path program 1 times [2020-10-14 19:14:08,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:14:08,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029809325] [2020-10-14 19:14:08,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:14:08,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:08,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:09,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:09,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:09,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:10,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:13,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:13,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 360 [2020-10-14 19:14:13,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:14:13,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-14 19:14:13,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:13,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:13,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 19:14:13,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:14:13,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-14 19:14:13,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:14,163 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:14:14,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:14:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:14,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:14,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:14,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:14:14,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:14,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:14:14,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:14,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:14,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:14:14,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:14,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:14:14,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:14,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:14:14,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:14,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:14,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:14,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:14:14,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:14,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 19:14:14,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:14,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:14,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:14:14,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:14:14,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 19:14:14,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:14,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:14:14,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:14,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:14,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:14,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 19:14:14,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:14,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-14 19:14:14,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:14,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:14,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:14:14,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:14:14,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 19:14:14,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:14,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-14 19:14:14,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:14,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:14,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:14,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 19:14:14,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:14,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 19:14:14,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:14,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:14,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:14:14,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:14:14,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 19:14:14,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:14,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-14 19:14:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:14,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:14,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:14,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 19:14:14,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:14,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 19:14:14,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:14,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:14,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:14:14,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:14:14,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 19:14:14,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:14,975 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 184 proven. 131 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-14 19:14:14,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029809325] [2020-10-14 19:14:14,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:14:14,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 19:14:14,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214380058] [2020-10-14 19:14:14,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 19:14:14,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:14:14,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 19:14:14,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-14 19:14:14,977 INFO L87 Difference]: Start difference. First operand 37197 states and 43656 transitions. Second operand 11 states. [2020-10-14 19:14:15,153 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 19:14:15,404 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:14:17,667 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:14:20,697 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:14:21,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:14:21,277 INFO L93 Difference]: Finished difference Result 107274 states and 130308 transitions. [2020-10-14 19:14:21,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 19:14:21,278 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 344 [2020-10-14 19:14:21,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:14:21,514 INFO L225 Difference]: With dead ends: 107274 [2020-10-14 19:14:21,514 INFO L226 Difference]: Without dead ends: 70716 [2020-10-14 19:14:21,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=240, Invalid=630, Unknown=0, NotChecked=0, Total=870 [2020-10-14 19:14:21,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70716 states. [2020-10-14 19:14:22,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70716 to 69113. [2020-10-14 19:14:22,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69113 states. [2020-10-14 19:14:23,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69113 states to 69113 states and 81501 transitions. [2020-10-14 19:14:23,141 INFO L78 Accepts]: Start accepts. Automaton has 69113 states and 81501 transitions. Word has length 344 [2020-10-14 19:14:23,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:14:23,142 INFO L479 AbstractCegarLoop]: Abstraction has 69113 states and 81501 transitions. [2020-10-14 19:14:23,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 19:14:23,143 INFO L276 IsEmpty]: Start isEmpty. Operand 69113 states and 81501 transitions. [2020-10-14 19:14:23,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-10-14 19:14:23,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:14:23,219 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 19:14:23,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 19:14:23,219 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:14:23,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:14:23,220 INFO L82 PathProgramCache]: Analyzing trace with hash -465719810, now seen corresponding path program 1 times [2020-10-14 19:14:23,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:14:23,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [427271326] [2020-10-14 19:14:23,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:14:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:23,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:23,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:23,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:24,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:28,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:28,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 407 [2020-10-14 19:14:28,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:14:28,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 19:14:28,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:28,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:28,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:14:28,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-14 19:14:28,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-14 19:14:28,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:28,530 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:14:28,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:14:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:28,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:28,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:28,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:14:28,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:28,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:14:28,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:28,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:28,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:14:28,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:28,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:14:28,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:28,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:14:28,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:28,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:28,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:28,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:14:28,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:28,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:14:28,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:28,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:28,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:14:28,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:28,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:14:28,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:28,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:14:28,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:28,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:28,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:28,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 19:14:28,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:28,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 19:14:28,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:28,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:28,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:14:28,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:28,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 19:14:28,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:28,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-14 19:14:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:28,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:28,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:28,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 19:14:28,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:28,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 19:14:28,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:28,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:28,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:14:28,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:14:28,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 19:14:28,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:28,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-14 19:14:28,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:29,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:29,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:29,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 19:14:29,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:29,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 19:14:29,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:29,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:29,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:14:29,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:14:29,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 19:14:29,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:29,595 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 423 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 19:14:29,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [427271326] [2020-10-14 19:14:29,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:14:29,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:14:29,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111465878] [2020-10-14 19:14:29,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:14:29,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:14:29,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:14:29,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:14:29,597 INFO L87 Difference]: Start difference. First operand 69113 states and 81501 transitions. Second operand 8 states. [2020-10-14 19:14:29,844 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:14:30,871 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:14:35,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:14:35,319 INFO L93 Difference]: Finished difference Result 175719 states and 212620 transitions. [2020-10-14 19:14:35,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:14:35,320 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 391 [2020-10-14 19:14:35,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:14:35,598 INFO L225 Difference]: With dead ends: 175719 [2020-10-14 19:14:35,598 INFO L226 Difference]: Without dead ends: 107245 [2020-10-14 19:14:35,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-14 19:14:35,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107245 states. [2020-10-14 19:14:38,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107245 to 106148. [2020-10-14 19:14:38,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106148 states. [2020-10-14 19:14:38,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106148 states to 106148 states and 128603 transitions. [2020-10-14 19:14:38,481 INFO L78 Accepts]: Start accepts. Automaton has 106148 states and 128603 transitions. Word has length 391 [2020-10-14 19:14:38,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:14:38,481 INFO L479 AbstractCegarLoop]: Abstraction has 106148 states and 128603 transitions. [2020-10-14 19:14:38,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:14:38,481 INFO L276 IsEmpty]: Start isEmpty. Operand 106148 states and 128603 transitions. [2020-10-14 19:14:38,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2020-10-14 19:14:38,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:14:38,595 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:14:38,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 19:14:38,595 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:14:38,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:14:38,595 INFO L82 PathProgramCache]: Analyzing trace with hash 55693883, now seen corresponding path program 1 times [2020-10-14 19:14:38,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:14:38,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855284180] [2020-10-14 19:14:38,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:14:38,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:38,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:38,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:38,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:43,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:43,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 433 [2020-10-14 19:14:43,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:14:43,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 19:14:43,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:43,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:43,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:14:43,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 19:14:43,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 19:14:43,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:43,829 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:14:43,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:14:43,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:43,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:43,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:43,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:14:43,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:43,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:14:43,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:43,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:43,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:14:43,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:43,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:14:43,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:43,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:14:43,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:43,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:44,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:44,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 19:14:44,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:44,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 19:14:44,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:44,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:44,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:14:44,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:44,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 19:14:44,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:44,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 19:14:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:44,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:44,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:44,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 19:14:44,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:44,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-14 19:14:44,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:44,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:44,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:14:44,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:14:44,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 19:14:44,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:44,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-14 19:14:44,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:44,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:44,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:44,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 19:14:44,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:44,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 19:14:44,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:44,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:44,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:14:44,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-14 19:14:44,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:14:44,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:44,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-14 19:14:44,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:44,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:44,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:44,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 19:14:44,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:44,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 19:14:44,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:44,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:44,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:14:44,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-14 19:14:44,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:14:44,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:44,521 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 317 proven. 107 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2020-10-14 19:14:44,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855284180] [2020-10-14 19:14:44,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:14:44,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:14:44,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306798154] [2020-10-14 19:14:44,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:14:44,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:14:44,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:14:44,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:14:44,523 INFO L87 Difference]: Start difference. First operand 106148 states and 128603 transitions. Second operand 7 states. [2020-10-14 19:14:44,769 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:14:46,049 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 19:14:51,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:14:51,026 INFO L93 Difference]: Finished difference Result 226687 states and 290832 transitions. [2020-10-14 19:14:51,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:14:51,027 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 417 [2020-10-14 19:14:51,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:14:51,547 INFO L225 Difference]: With dead ends: 226687 [2020-10-14 19:14:51,547 INFO L226 Difference]: Without dead ends: 121903 [2020-10-14 19:14:51,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:14:51,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121903 states. [2020-10-14 19:14:54,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121903 to 116680. [2020-10-14 19:14:54,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116680 states. [2020-10-14 19:14:54,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116680 states to 116680 states and 140444 transitions. [2020-10-14 19:14:54,753 INFO L78 Accepts]: Start accepts. Automaton has 116680 states and 140444 transitions. Word has length 417 [2020-10-14 19:14:54,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:14:54,754 INFO L479 AbstractCegarLoop]: Abstraction has 116680 states and 140444 transitions. [2020-10-14 19:14:54,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:14:54,754 INFO L276 IsEmpty]: Start isEmpty. Operand 116680 states and 140444 transitions. [2020-10-14 19:14:54,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2020-10-14 19:14:54,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:14:54,944 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 19:14:54,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 19:14:54,945 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:14:54,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:14:54,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1520156626, now seen corresponding path program 1 times [2020-10-14 19:14:54,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:14:54,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563042614] [2020-10-14 19:14:54,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:14:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:55,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:55,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:55,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:55,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:56,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:00,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:00,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 445 [2020-10-14 19:15:00,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:15:00,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 19:15:00,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:00,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:00,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:15:00,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-14 19:15:00,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 19:15:00,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:00,300 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:15:00,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:15:00,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:00,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:00,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:00,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:15:00,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:00,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:15:00,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:00,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:00,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:15:00,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:00,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:15:00,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:00,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:15:00,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:00,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:00,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:00,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 19:15:00,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:00,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 19:15:00,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:00,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:00,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:15:00,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:00,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:15:00,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:00,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 19:15:00,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:00,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:00,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:00,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:15:00,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:00,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 19:15:00,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:00,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:00,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:15:00,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:00,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 19:15:00,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:00,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-14 19:15:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:00,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:00,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:00,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 19:15:00,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:00,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-14 19:15:00,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:00,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:00,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:15:00,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:15:00,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 19:15:00,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:00,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-14 19:15:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:00,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:02,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:02,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 19:15:02,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:02,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2115 [2020-10-14 19:15:02,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:02,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:02,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:15:02,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:15:02,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 19:15:02,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:02,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-10-14 19:15:02,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:02,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:03,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:03,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 19:15:03,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:03,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 19:15:03,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:03,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:03,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:15:03,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-14 19:15:03,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:15:03,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:03,296 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 393 proven. 159 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-14 19:15:03,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563042614] [2020-10-14 19:15:03,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:15:03,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 19:15:03,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256779529] [2020-10-14 19:15:03,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 19:15:03,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:15:03,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 19:15:03,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-14 19:15:03,299 INFO L87 Difference]: Start difference. First operand 116680 states and 140444 transitions. Second operand 11 states. [2020-10-14 19:15:03,579 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 140 [2020-10-14 19:15:04,046 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 141 [2020-10-14 19:15:05,113 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:15:05,436 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 152 [2020-10-14 19:15:07,230 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 142 [2020-10-14 19:15:07,504 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-14 19:15:08,657 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 153 [2020-10-14 19:15:13,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:15:13,606 INFO L93 Difference]: Finished difference Result 262352 states and 316140 transitions. [2020-10-14 19:15:13,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-14 19:15:13,607 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 427 [2020-10-14 19:15:13,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:15:13,976 INFO L225 Difference]: With dead ends: 262352 [2020-10-14 19:15:13,976 INFO L226 Difference]: Without dead ends: 147722 [2020-10-14 19:15:14,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=333, Invalid=1227, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 19:15:14,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147722 states. [2020-10-14 19:15:16,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147722 to 142498. [2020-10-14 19:15:16,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142498 states. [2020-10-14 19:15:17,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142498 states to 142498 states and 173205 transitions. [2020-10-14 19:15:17,191 INFO L78 Accepts]: Start accepts. Automaton has 142498 states and 173205 transitions. Word has length 427 [2020-10-14 19:15:17,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:15:17,191 INFO L479 AbstractCegarLoop]: Abstraction has 142498 states and 173205 transitions. [2020-10-14 19:15:17,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 19:15:17,192 INFO L276 IsEmpty]: Start isEmpty. Operand 142498 states and 173205 transitions. [2020-10-14 19:15:17,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2020-10-14 19:15:17,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:15:17,376 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:15:17,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 19:15:17,376 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:15:17,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:15:17,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1426071001, now seen corresponding path program 1 times [2020-10-14 19:15:17,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:15:17,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270946673] [2020-10-14 19:15:17,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:15:17,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:17,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:17,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:17,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:20,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:20,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:22,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:22,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 491 [2020-10-14 19:15:22,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:15:22,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-14 19:15:22,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:22,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:22,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:15:22,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 19:15:22,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 19:15:22,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:22,647 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:15:22,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:15:22,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:22,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:22,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:22,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:15:22,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:22,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:15:22,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:22,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:22,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:15:22,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:22,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:15:22,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:22,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:15:22,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:22,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:22,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:22,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:15:22,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:22,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 19:15:22,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:22,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:22,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:15:22,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:15:22,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 19:15:22,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:22,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:15:22,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:22,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:22,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:22,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 19:15:22,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:22,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-14 19:15:22,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:22,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:22,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:15:22,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:15:22,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 19:15:22,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:23,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-14 19:15:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:23,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:23,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:23,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 19:15:23,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:23,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:15:23,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:23,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:23,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:15:23,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 19:15:23,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:15:23,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:15:23,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-14 19:15:23,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:23,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:23,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:23,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 19:15:23,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:23,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 19:15:23,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:23,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:23,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:15:23,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 19:15:23,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:15:23,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:15:23,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-14 19:15:23,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:23,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:23,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:23,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 19:15:23,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:23,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 19:15:23,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:23,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:23,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:15:23,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 19:15:23,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:15:23,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:15:23,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 19:15:23,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:23,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:23,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:23,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 19:15:23,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:23,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 19:15:23,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:23,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:23,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:15:23,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 19:15:23,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:15:23,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:15:23,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2020-10-14 19:15:23,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:15:23,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:15:23,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:15:23,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 19:15:23,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:15:23,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 19:15:23,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:15:23,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:15:23,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:15:23,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 19:15:23,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:15:23,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:15:23,591 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 319 proven. 197 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2020-10-14 19:15:23,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270946673] [2020-10-14 19:15:23,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:15:23,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:15:23,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202753029] [2020-10-14 19:15:23,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:15:23,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:15:23,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:15:23,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:15:23,593 INFO L87 Difference]: Start difference. First operand 142498 states and 173205 transitions. Second operand 7 states. [2020-10-14 19:15:23,800 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 19:15:30,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:15:30,963 INFO L93 Difference]: Finished difference Result 389173 states and 490563 transitions. [2020-10-14 19:15:30,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 19:15:30,963 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 469 [2020-10-14 19:15:30,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:15:31,978 INFO L225 Difference]: With dead ends: 389173 [2020-10-14 19:15:31,978 INFO L226 Difference]: Without dead ends: 248259 [2020-10-14 19:15:32,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 19:15:32,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248259 states.