/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:27:33,914 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:27:33,918 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:27:33,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:27:33,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:27:33,968 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:27:33,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:27:33,974 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:27:33,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:27:33,981 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:27:33,982 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:27:33,986 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:27:33,986 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:27:33,987 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:27:33,991 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:27:33,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:27:33,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:27:33,997 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:27:34,000 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:27:34,008 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:27:34,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:27:34,013 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:27:34,015 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:27:34,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:27:34,023 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:27:34,023 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:27:34,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:27:34,024 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:27:34,025 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:27:34,029 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:27:34,029 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:27:34,030 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:27:34,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:27:34,032 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:27:34,033 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:27:34,034 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:27:34,035 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:27:34,035 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:27:34,035 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:27:34,036 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:27:34,037 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:27:34,038 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 12:27:34,068 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:27:34,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:27:34,069 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:27:34,070 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:27:34,070 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:27:34,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:27:34,070 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:27:34,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:27:34,071 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:27:34,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:27:34,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:27:34,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:27:34,071 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:27:34,072 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:27:34,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:27:34,072 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:27:34,072 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:27:34,073 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:27:34,073 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:27:34,073 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:27:34,073 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:27:34,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:27:34,074 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:27:34,074 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:27:34,074 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:27:34,074 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:27:34,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:27:34,075 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:27:34,075 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:27:34,075 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.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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:27:34,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:27:34,579 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:27:34,584 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:27:34,587 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:27:34,588 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:27:34,590 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label05.c [2020-09-21 12:27:34,689 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/784bb68e9/3e26cd3d04e44e85be9836a0ed51c935/FLAGa219a0736 [2020-09-21 12:27:35,380 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:27:35,381 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label05.c [2020-09-21 12:27:35,398 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/784bb68e9/3e26cd3d04e44e85be9836a0ed51c935/FLAGa219a0736 [2020-09-21 12:27:35,630 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/784bb68e9/3e26cd3d04e44e85be9836a0ed51c935 [2020-09-21 12:27:35,646 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:27:35,653 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:27:35,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:27:35,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:27:35,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:27:35,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:27:35" (1/1) ... [2020-09-21 12:27:35,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d198e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:35, skipping insertion in model container [2020-09-21 12:27:35,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:27:35" (1/1) ... [2020-09-21 12:27:35,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:27:35,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:27:36,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:27:36,270 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:27:36,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:27:36,396 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:27:36,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:36 WrapperNode [2020-09-21 12:27:36,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:27:36,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:27:36,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:27:36,398 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:27:36,414 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:36" (1/1) ... [2020-09-21 12:27:36,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:36" (1/1) ... [2020-09-21 12:27:36,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:36" (1/1) ... [2020-09-21 12:27:36,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:36" (1/1) ... [2020-09-21 12:27:36,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:36" (1/1) ... [2020-09-21 12:27:36,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:36" (1/1) ... [2020-09-21 12:27:36,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:36" (1/1) ... [2020-09-21 12:27:36,511 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:27:36,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:27:36,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:27:36,512 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:27:36,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:27:36,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:27:36,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:27:36,611 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-21 12:27:36,612 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:27:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-21 12:27:36,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:27:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:27:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-21 12:27:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:27:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:27:36,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:27:37,832 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:27:37,832 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 12:27:37,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:27:37 BoogieIcfgContainer [2020-09-21 12:27:37,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:27:37,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:27:37,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:27:37,844 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:27:37,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:27:35" (1/3) ... [2020-09-21 12:27:37,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71723820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:27:37, skipping insertion in model container [2020-09-21 12:27:37,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:36" (2/3) ... [2020-09-21 12:27:37,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71723820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:27:37, skipping insertion in model container [2020-09-21 12:27:37,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:27:37" (3/3) ... [2020-09-21 12:27:37,849 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label05.c [2020-09-21 12:27:37,861 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:27:37,871 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:27:37,894 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:27:37,928 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:27:37,929 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:27:37,929 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:27:37,929 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:27:37,929 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:27:37,929 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:27:37,930 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:27:37,930 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:27:37,958 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-09-21 12:27:37,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-09-21 12:27:37,972 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:37,973 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] [2020-09-21 12:27:37,974 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:37,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:37,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1904695938, now seen corresponding path program 1 times [2020-09-21 12:27:37,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:37,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608980978] [2020-09-21 12:27:37,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:38,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:38,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:38,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:39,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:39,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-09-21 12:27:39,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:27:39,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1014 [2020-09-21 12:27:39,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:39,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:27:39,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:27:39,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-09-21 12:27:39,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-21 12:27:39,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:39,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:39,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:39,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:39,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:39,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:39,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:27:39,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:39,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:27:39,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:39,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:27:39,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:39,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:27:39,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608980978] [2020-09-21 12:27:39,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:27:39,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:27:39,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676117752] [2020-09-21 12:27:39,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:27:39,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:39,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:27:39,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:27:39,631 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 4 states. [2020-09-21 12:27:41,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:41,291 INFO L93 Difference]: Finished difference Result 557 states and 955 transitions. [2020-09-21 12:27:41,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:27:41,294 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2020-09-21 12:27:41,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:41,326 INFO L225 Difference]: With dead ends: 557 [2020-09-21 12:27:41,326 INFO L226 Difference]: Without dead ends: 286 [2020-09-21 12:27:41,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:27:41,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-09-21 12:27:41,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 282. [2020-09-21 12:27:41,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-09-21 12:27:41,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 392 transitions. [2020-09-21 12:27:41,418 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 392 transitions. Word has length 100 [2020-09-21 12:27:41,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:41,419 INFO L479 AbstractCegarLoop]: Abstraction has 282 states and 392 transitions. [2020-09-21 12:27:41,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:27:41,419 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 392 transitions. [2020-09-21 12:27:41,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-21 12:27:41,425 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:41,425 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 12:27:41,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:27:41,426 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:41,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:41,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1493638873, now seen corresponding path program 1 times [2020-09-21 12:27:41,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:41,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860694370] [2020-09-21 12:27:41,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:41,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:41,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:41,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:41,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:42,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:42,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-21 12:27:42,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:27:42,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1019 [2020-09-21 12:27:42,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:42,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:27:42,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-21 12:27:42,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-09-21 12:27:42,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:42,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:42,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:42,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:42,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:42,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:42,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:27:42,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:42,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:42,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:42,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:42,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:42,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:27:42,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:42,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:42,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:42,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:27:42,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:42,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 12:27:42,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:42,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:27:42,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:42,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:27:42,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:42,798 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:27:42,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860694370] [2020-09-21 12:27:42,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:27:42,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:27:42,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840338273] [2020-09-21 12:27:42,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:27:42,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:42,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:27:42,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:27:42,803 INFO L87 Difference]: Start difference. First operand 282 states and 392 transitions. Second operand 5 states. [2020-09-21 12:27:43,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:43,977 INFO L93 Difference]: Finished difference Result 836 states and 1187 transitions. [2020-09-21 12:27:43,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:27:43,978 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-09-21 12:27:43,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:43,984 INFO L225 Difference]: With dead ends: 836 [2020-09-21 12:27:43,984 INFO L226 Difference]: Without dead ends: 560 [2020-09-21 12:27:43,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:27:43,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2020-09-21 12:27:44,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 556. [2020-09-21 12:27:44,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-09-21 12:27:44,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 737 transitions. [2020-09-21 12:27:44,030 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 737 transitions. Word has length 108 [2020-09-21 12:27:44,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:44,031 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 737 transitions. [2020-09-21 12:27:44,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:27:44,031 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 737 transitions. [2020-09-21 12:27:44,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-09-21 12:27:44,037 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:44,037 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 12:27:44,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:27:44,037 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:44,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:44,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1348035557, now seen corresponding path program 1 times [2020-09-21 12:27:44,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:44,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907199984] [2020-09-21 12:27:44,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:44,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:44,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:44,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:45,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:45,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-21 12:27:45,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:27:45,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1036 [2020-09-21 12:27:45,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:45,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:27:45,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:27:45,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:27:45,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:45,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:45,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:45,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:45,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:45,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:45,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:45,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:27:45,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:45,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:27:45,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:45,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:27:45,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:45,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:27:45,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:45,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:45,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:45,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:27:45,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:45,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-21 12:27:45,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:45,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:27:45,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:27:45,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 12:27:45,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:45,350 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:27:45,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907199984] [2020-09-21 12:27:45,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:27:45,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:27:45,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940965738] [2020-09-21 12:27:45,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:27:45,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:45,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:27:45,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:27:45,355 INFO L87 Difference]: Start difference. First operand 556 states and 737 transitions. Second operand 7 states. [2020-09-21 12:27:47,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:47,044 INFO L93 Difference]: Finished difference Result 1688 states and 2338 transitions. [2020-09-21 12:27:47,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:27:47,046 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 109 [2020-09-21 12:27:47,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:47,058 INFO L225 Difference]: With dead ends: 1688 [2020-09-21 12:27:47,058 INFO L226 Difference]: Without dead ends: 1138 [2020-09-21 12:27:47,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:27:47,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2020-09-21 12:27:47,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 1114. [2020-09-21 12:27:47,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1114 states. [2020-09-21 12:27:47,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 1452 transitions. [2020-09-21 12:27:47,124 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 1452 transitions. Word has length 109 [2020-09-21 12:27:47,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:47,125 INFO L479 AbstractCegarLoop]: Abstraction has 1114 states and 1452 transitions. [2020-09-21 12:27:47,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:27:47,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 1452 transitions. [2020-09-21 12:27:47,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-21 12:27:47,133 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:47,133 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:27:47,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:27:47,134 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:47,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:47,134 INFO L82 PathProgramCache]: Analyzing trace with hash -676972618, now seen corresponding path program 1 times [2020-09-21 12:27:47,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:47,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [897005615] [2020-09-21 12:27:47,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:47,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:47,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:47,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:47,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:48,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:48,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-21 12:27:48,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:27:48,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1017 [2020-09-21 12:27:48,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:48,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:27:48,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-21 12:27:48,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-21 12:27:48,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:48,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:48,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:48,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:48,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:48,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:48,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:48,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:27:48,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:48,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:48,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:48,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:48,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:48,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:27:48,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:48,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:48,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:48,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 12:27:48,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:48,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 12:27:48,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:48,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:27:48,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:48,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:27:48,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:48,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 12:27:48,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:48,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:48,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:48,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-21 12:27:48,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:48,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-21 12:27:48,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:48,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:27:48,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:27:48,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-21 12:27:48,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:48,648 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:27:48,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [897005615] [2020-09-21 12:27:48,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:27:48,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:27:48,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439401500] [2020-09-21 12:27:48,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:27:48,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:48,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:27:48,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:27:48,651 INFO L87 Difference]: Start difference. First operand 1114 states and 1452 transitions. Second operand 7 states. [2020-09-21 12:27:50,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:50,123 INFO L93 Difference]: Finished difference Result 2637 states and 3497 transitions. [2020-09-21 12:27:50,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:27:50,124 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2020-09-21 12:27:50,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:50,133 INFO L225 Difference]: With dead ends: 2637 [2020-09-21 12:27:50,134 INFO L226 Difference]: Without dead ends: 1529 [2020-09-21 12:27:50,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:27:50,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2020-09-21 12:27:50,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 1253. [2020-09-21 12:27:50,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1253 states. [2020-09-21 12:27:50,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 1632 transitions. [2020-09-21 12:27:50,194 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 1632 transitions. Word has length 142 [2020-09-21 12:27:50,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:50,237 INFO L479 AbstractCegarLoop]: Abstraction has 1253 states and 1632 transitions. [2020-09-21 12:27:50,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:27:50,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 1632 transitions. [2020-09-21 12:27:50,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-21 12:27:50,242 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:50,242 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-21 12:27:50,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:27:50,243 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:50,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:50,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1440991952, now seen corresponding path program 1 times [2020-09-21 12:27:50,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:50,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978274727] [2020-09-21 12:27:50,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:50,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:50,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:50,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:51,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:51,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-21 12:27:51,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:27:51,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:27:51,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:51,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:27:51,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-21 12:27:51,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-21 12:27:51,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:51,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:51,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:51,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:51,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:51,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:51,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:51,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:27:51,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:51,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:51,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:51,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:51,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:51,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:27:51,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:51,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:51,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:51,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:27:51,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:51,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-21 12:27:51,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:51,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:27:51,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:51,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:27:51,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:51,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:27:51,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:51,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:51,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:51,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-21 12:27:51,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:51,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-21 12:27:51,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:51,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:27:51,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:27:51,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-21 12:27:51,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:51,681 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:27:51,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978274727] [2020-09-21 12:27:51,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:27:51,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:27:51,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814053451] [2020-09-21 12:27:51,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:27:51,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:51,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:27:51,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:27:51,684 INFO L87 Difference]: Start difference. First operand 1253 states and 1632 transitions. Second operand 7 states. [2020-09-21 12:27:53,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:53,179 INFO L93 Difference]: Finished difference Result 3233 states and 4357 transitions. [2020-09-21 12:27:53,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:27:53,186 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 166 [2020-09-21 12:27:53,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:53,204 INFO L225 Difference]: With dead ends: 3233 [2020-09-21 12:27:53,204 INFO L226 Difference]: Without dead ends: 1986 [2020-09-21 12:27:53,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:27:53,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1986 states. [2020-09-21 12:27:53,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1986 to 1825. [2020-09-21 12:27:53,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1825 states. [2020-09-21 12:27:53,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1825 states to 1825 states and 2352 transitions. [2020-09-21 12:27:53,297 INFO L78 Accepts]: Start accepts. Automaton has 1825 states and 2352 transitions. Word has length 166 [2020-09-21 12:27:53,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:53,298 INFO L479 AbstractCegarLoop]: Abstraction has 1825 states and 2352 transitions. [2020-09-21 12:27:53,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:27:53,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1825 states and 2352 transitions. [2020-09-21 12:27:53,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-21 12:27:53,305 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:53,305 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2020-09-21 12:27:53,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:27:53,306 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:53,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:53,306 INFO L82 PathProgramCache]: Analyzing trace with hash 728706623, now seen corresponding path program 1 times [2020-09-21 12:27:53,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:53,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949178284] [2020-09-21 12:27:53,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:53,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:53,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:53,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:54,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:54,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:54,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-21 12:27:54,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:27:54,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1015 [2020-09-21 12:27:54,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:54,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:27:54,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-21 12:27:54,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-21 12:27:54,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:54,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:54,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:54,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:54,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:54,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:54,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:54,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:27:54,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:54,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:54,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:54,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:54,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:54,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:27:54,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:54,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:54,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:54,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 12:27:54,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:54,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-21 12:27:54,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:54,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:27:54,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:54,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:27:54,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:54,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 12:27:54,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:54,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:54,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:54,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:27:54,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:54,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-21 12:27:54,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:54,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:27:54,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:27:54,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 12:27:54,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:54,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-21 12:27:54,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:54,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:54,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:54,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-21 12:27:54,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:54,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-21 12:27:54,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:54,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:54,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-21 12:27:54,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:54,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:54,758 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 72 proven. 14 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-21 12:27:54,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949178284] [2020-09-21 12:27:54,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:27:54,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:27:54,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554898939] [2020-09-21 12:27:54,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:27:54,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:54,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:27:54,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:27:54,761 INFO L87 Difference]: Start difference. First operand 1825 states and 2352 transitions. Second operand 7 states. [2020-09-21 12:27:56,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:56,386 INFO L93 Difference]: Finished difference Result 4079 states and 5329 transitions. [2020-09-21 12:27:56,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:27:56,387 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 169 [2020-09-21 12:27:56,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:56,398 INFO L225 Difference]: With dead ends: 4079 [2020-09-21 12:27:56,398 INFO L226 Difference]: Without dead ends: 2395 [2020-09-21 12:27:56,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:27:56,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2395 states. [2020-09-21 12:27:56,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2395 to 2250. [2020-09-21 12:27:56,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2250 states. [2020-09-21 12:27:56,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2250 states to 2250 states and 2813 transitions. [2020-09-21 12:27:56,466 INFO L78 Accepts]: Start accepts. Automaton has 2250 states and 2813 transitions. Word has length 169 [2020-09-21 12:27:56,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:56,467 INFO L479 AbstractCegarLoop]: Abstraction has 2250 states and 2813 transitions. [2020-09-21 12:27:56,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:27:56,467 INFO L276 IsEmpty]: Start isEmpty. Operand 2250 states and 2813 transitions. [2020-09-21 12:27:56,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-21 12:27:56,474 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:56,474 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-09-21 12:27:56,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:27:56,475 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:56,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:56,475 INFO L82 PathProgramCache]: Analyzing trace with hash -104373969, now seen corresponding path program 1 times [2020-09-21 12:27:56,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:56,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480967872] [2020-09-21 12:27:56,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:56,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:56,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:57,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:57,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:57,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-21 12:27:57,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:27:57,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1012 [2020-09-21 12:27:57,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:57,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:27:57,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-09-21 12:27:57,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-21 12:27:57,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:57,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:57,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:57,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:57,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:57,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:57,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:27:57,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:57,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:57,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:57,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:57,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:57,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:27:57,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:57,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:57,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:57,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 12:27:57,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:57,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:27:57,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:57,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:57,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:57,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:57,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:57,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-21 12:27:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:57,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:57,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:57,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:27:57,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:57,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 12:27:57,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:57,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:57,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:57,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:57,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:57,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 12:27:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:57,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:57,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:57,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-21 12:27:57,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:57,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-21 12:27:57,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:57,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:27:57,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:57,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-21 12:27:57,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:58,206 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 71 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-09-21 12:27:58,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480967872] [2020-09-21 12:27:58,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:27:58,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:27:58,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860113921] [2020-09-21 12:27:58,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:27:58,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:58,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:27:58,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:27:58,209 INFO L87 Difference]: Start difference. First operand 2250 states and 2813 transitions. Second operand 5 states. [2020-09-21 12:27:59,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:59,338 INFO L93 Difference]: Finished difference Result 4439 states and 5575 transitions. [2020-09-21 12:27:59,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:27:59,338 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 177 [2020-09-21 12:27:59,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:59,350 INFO L225 Difference]: With dead ends: 4439 [2020-09-21 12:27:59,350 INFO L226 Difference]: Without dead ends: 2252 [2020-09-21 12:27:59,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:27:59,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2252 states. [2020-09-21 12:27:59,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2252 to 2250. [2020-09-21 12:27:59,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2250 states. [2020-09-21 12:27:59,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2250 states to 2250 states and 2808 transitions. [2020-09-21 12:27:59,423 INFO L78 Accepts]: Start accepts. Automaton has 2250 states and 2808 transitions. Word has length 177 [2020-09-21 12:27:59,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:59,424 INFO L479 AbstractCegarLoop]: Abstraction has 2250 states and 2808 transitions. [2020-09-21 12:27:59,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:27:59,424 INFO L276 IsEmpty]: Start isEmpty. Operand 2250 states and 2808 transitions. [2020-09-21 12:27:59,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-21 12:27:59,431 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:59,432 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:27:59,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:27:59,432 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:59,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:59,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1383755363, now seen corresponding path program 1 times [2020-09-21 12:27:59,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:59,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655144912] [2020-09-21 12:27:59,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:59,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:59,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:59,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:00,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:00,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-21 12:28:00,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:28:00,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1038 [2020-09-21 12:28:00,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:00,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:28:00,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-21 12:28:00,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-21 12:28:00,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:28:00,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:28:00,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:00,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:00,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:00,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:28:00,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:00,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:28:00,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:00,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:00,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:00,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:00,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:28:00,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:28:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:00,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:00,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:00,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 12:28:00,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:00,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-21 12:28:00,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:00,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:28:00,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:00,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 12:28:00,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:00,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-21 12:28:00,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:00,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:00,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:00,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:28:00,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:00,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-21 12:28:00,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:00,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:28:00,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:28:00,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 12:28:00,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 55 [2020-09-21 12:28:00,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 12:28:00,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:00,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:00,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:00,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-21 12:28:00,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:00,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-21 12:28:00,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:00,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:00,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-21 12:28:00,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:00,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:28:01,001 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 90 proven. 14 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-21 12:28:01,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655144912] [2020-09-21 12:28:01,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:28:01,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:28:01,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123747151] [2020-09-21 12:28:01,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:28:01,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:28:01,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:28:01,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:28:01,004 INFO L87 Difference]: Start difference. First operand 2250 states and 2808 transitions. Second operand 7 states. [2020-09-21 12:28:02,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:28:02,786 INFO L93 Difference]: Finished difference Result 4506 states and 5691 transitions. [2020-09-21 12:28:02,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:28:02,787 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 183 [2020-09-21 12:28:02,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:28:02,798 INFO L225 Difference]: With dead ends: 4506 [2020-09-21 12:28:02,798 INFO L226 Difference]: Without dead ends: 2397 [2020-09-21 12:28:02,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:28:02,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2397 states. [2020-09-21 12:28:02,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2397 to 2119. [2020-09-21 12:28:02,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2119 states. [2020-09-21 12:28:02,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2119 states to 2119 states and 2640 transitions. [2020-09-21 12:28:02,868 INFO L78 Accepts]: Start accepts. Automaton has 2119 states and 2640 transitions. Word has length 183 [2020-09-21 12:28:02,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:28:02,869 INFO L479 AbstractCegarLoop]: Abstraction has 2119 states and 2640 transitions. [2020-09-21 12:28:02,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:28:02,869 INFO L276 IsEmpty]: Start isEmpty. Operand 2119 states and 2640 transitions. [2020-09-21 12:28:02,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-09-21 12:28:02,876 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:28:02,877 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:28:02,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:28:02,877 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:28:02,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:28:02,878 INFO L82 PathProgramCache]: Analyzing trace with hash 188921879, now seen corresponding path program 1 times [2020-09-21 12:28:02,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:28:02,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378519134] [2020-09-21 12:28:02,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:28:02,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:03,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:03,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:03,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:03,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:03,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:03,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-09-21 12:28:03,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:28:03,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1030 [2020-09-21 12:28:03,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:03,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:28:03,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-09-21 12:28:03,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-09-21 12:28:03,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:04,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:28:04,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:04,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:04,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:04,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:28:04,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:04,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:28:04,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:04,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:04,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:04,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:04,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:04,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:28:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:04,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:04,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:04,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:28:04,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:04,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:28:04,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:04,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:04,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:04,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:04,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:04,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:28:04,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:04,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:04,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:04,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-21 12:28:04,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:04,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-21 12:28:04,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:04,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:04,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:04,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:04,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:04,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-21 12:28:04,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:04,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:04,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:04,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-21 12:28:04,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:04,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-21 12:28:04,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:04,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:28:04,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:04,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-21 12:28:04,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:04,383 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 110 proven. 3 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-09-21 12:28:04,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378519134] [2020-09-21 12:28:04,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:28:04,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:28:04,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395779912] [2020-09-21 12:28:04,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:28:04,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:28:04,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:28:04,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:28:04,396 INFO L87 Difference]: Start difference. First operand 2119 states and 2640 transitions. Second operand 5 states. [2020-09-21 12:28:05,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:28:05,607 INFO L93 Difference]: Finished difference Result 4238 states and 5292 transitions. [2020-09-21 12:28:05,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:28:05,607 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 216 [2020-09-21 12:28:05,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:28:05,618 INFO L225 Difference]: With dead ends: 4238 [2020-09-21 12:28:05,619 INFO L226 Difference]: Without dead ends: 2125 [2020-09-21 12:28:05,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:28:05,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2125 states. [2020-09-21 12:28:05,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2125 to 1982. [2020-09-21 12:28:05,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1982 states. [2020-09-21 12:28:05,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1982 states to 1982 states and 2392 transitions. [2020-09-21 12:28:05,718 INFO L78 Accepts]: Start accepts. Automaton has 1982 states and 2392 transitions. Word has length 216 [2020-09-21 12:28:05,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:28:05,719 INFO L479 AbstractCegarLoop]: Abstraction has 1982 states and 2392 transitions. [2020-09-21 12:28:05,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:28:05,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1982 states and 2392 transitions. [2020-09-21 12:28:05,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-09-21 12:28:05,727 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:28:05,727 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:28:05,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:28:05,728 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:28:05,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:28:05,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1983284842, now seen corresponding path program 1 times [2020-09-21 12:28:05,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:28:05,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964463603] [2020-09-21 12:28:05,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:28:05,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:05,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:05,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:06,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:06,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:06,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-09-21 12:28:06,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:28:06,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1055 [2020-09-21 12:28:06,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:06,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:28:06,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-09-21 12:28:06,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-21 12:28:06,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:06,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:28:06,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:06,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:06,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:06,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:28:06,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:06,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:28:06,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:06,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:06,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:06,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:06,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:06,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:28:06,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:06,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:06,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:06,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-21 12:28:06,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:06,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-21 12:28:06,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:06,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:06,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:06,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:07,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:07,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-21 12:28:07,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:07,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:07,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:07,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-21 12:28:07,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:07,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-21 12:28:07,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:07,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:28:07,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:07,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-21 12:28:07,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:07,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-21 12:28:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:07,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:07,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:07,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:28:07,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:07,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-21 12:28:07,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:07,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:28:07,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:28:07,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 12:28:07,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:07,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-21 12:28:07,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:07,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:07,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:07,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-21 12:28:07,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:07,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-21 12:28:07,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:07,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:07,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-21 12:28:07,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:07,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:07,336 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 173 proven. 14 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-09-21 12:28:07,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [964463603] [2020-09-21 12:28:07,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:28:07,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:28:07,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379506757] [2020-09-21 12:28:07,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:28:07,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:28:07,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:28:07,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:28:07,338 INFO L87 Difference]: Start difference. First operand 1982 states and 2392 transitions. Second operand 7 states. [2020-09-21 12:28:09,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:28:09,071 INFO L93 Difference]: Finished difference Result 4161 states and 5205 transitions. [2020-09-21 12:28:09,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 12:28:09,072 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 248 [2020-09-21 12:28:09,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:28:09,083 INFO L225 Difference]: With dead ends: 4161 [2020-09-21 12:28:09,083 INFO L226 Difference]: Without dead ends: 2185 [2020-09-21 12:28:09,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:28:09,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2185 states. [2020-09-21 12:28:09,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2185 to 2127. [2020-09-21 12:28:09,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2127 states. [2020-09-21 12:28:09,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2127 states to 2127 states and 2533 transitions. [2020-09-21 12:28:09,154 INFO L78 Accepts]: Start accepts. Automaton has 2127 states and 2533 transitions. Word has length 248 [2020-09-21 12:28:09,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:28:09,154 INFO L479 AbstractCegarLoop]: Abstraction has 2127 states and 2533 transitions. [2020-09-21 12:28:09,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:28:09,155 INFO L276 IsEmpty]: Start isEmpty. Operand 2127 states and 2533 transitions. [2020-09-21 12:28:09,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-09-21 12:28:09,162 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:28:09,163 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:28:09,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 12:28:09,163 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:28:09,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:28:09,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1048305613, now seen corresponding path program 1 times [2020-09-21 12:28:09,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:28:09,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996945641] [2020-09-21 12:28:09,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:28:09,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:09,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:09,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:10,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:10,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:10,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-09-21 12:28:10,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:28:10,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-09-21 12:28:10,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:10,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:28:10,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-21 12:28:10,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-21 12:28:10,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:10,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:28:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:10,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:10,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:10,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:28:10,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:10,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:28:10,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:10,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:10,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:10,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:10,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:10,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:28:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:10,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:10,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:10,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-21 12:28:10,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:10,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-21 12:28:10,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:10,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:28:10,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:10,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-21 12:28:10,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:28:10,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-21 12:28:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:10,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:10,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:10,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-21 12:28:10,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:10,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-21 12:28:10,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:10,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:28:10,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:28:10,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-21 12:28:10,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:10,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-21 12:28:10,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:10,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:10,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:10,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 12:28:10,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:10,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:28:10,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:10,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:10,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:28:10,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:10,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:10,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-09-21 12:28:10,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:10,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:10,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:10,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:28:10,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:10,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 12:28:10,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:10,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:10,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 12:28:10,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:10,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:10,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-21 12:28:10,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:10,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:10,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:10,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-21 12:28:10,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:10,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-21 12:28:10,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:10,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:10,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-21 12:28:10,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:10,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:28:10,795 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 188 proven. 70 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-09-21 12:28:10,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996945641] [2020-09-21 12:28:10,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:28:10,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:28:10,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119316719] [2020-09-21 12:28:10,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:28:10,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:28:10,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:28:10,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:28:10,797 INFO L87 Difference]: Start difference. First operand 2127 states and 2533 transitions. Second operand 7 states. [2020-09-21 12:28:13,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:28:13,018 INFO L93 Difference]: Finished difference Result 5164 states and 6158 transitions. [2020-09-21 12:28:13,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:28:13,019 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 261 [2020-09-21 12:28:13,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:28:13,028 INFO L225 Difference]: With dead ends: 5164 [2020-09-21 12:28:13,029 INFO L226 Difference]: Without dead ends: 1956 [2020-09-21 12:28:13,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:28:13,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1956 states. [2020-09-21 12:28:13,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1956 to 1547. [2020-09-21 12:28:13,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1547 states. [2020-09-21 12:28:13,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1547 states to 1547 states and 1667 transitions. [2020-09-21 12:28:13,081 INFO L78 Accepts]: Start accepts. Automaton has 1547 states and 1667 transitions. Word has length 261 [2020-09-21 12:28:13,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:28:13,082 INFO L479 AbstractCegarLoop]: Abstraction has 1547 states and 1667 transitions. [2020-09-21 12:28:13,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:28:13,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1547 states and 1667 transitions. [2020-09-21 12:28:13,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-09-21 12:28:13,089 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:28:13,089 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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] [2020-09-21 12:28:13,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 12:28:13,090 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:28:13,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:28:13,091 INFO L82 PathProgramCache]: Analyzing trace with hash -961291209, now seen corresponding path program 1 times [2020-09-21 12:28:13,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:28:13,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365458672] [2020-09-21 12:28:13,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:28:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:13,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:13,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:14,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:14,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-09-21 12:28:14,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:28:14,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1042 [2020-09-21 12:28:14,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:14,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:28:14,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-09-21 12:28:14,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-09-21 12:28:14,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:14,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:28:14,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:14,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:14,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:14,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:28:14,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:14,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:28:14,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:14,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:14,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:14,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:14,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:28:14,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:28:14,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:14,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:14,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:14,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-21 12:28:14,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:14,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-21 12:28:14,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:14,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:14,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:14,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:14,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:28:14,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-21 12:28:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:14,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:14,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:14,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-21 12:28:14,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:14,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-21 12:28:14,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:14,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:14,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:14,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:14,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:14,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-21 12:28:14,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:14,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:14,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:14,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 12:28:14,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:14,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:28:14,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:14,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:14,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:14,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:14,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:14,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-21 12:28:14,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:14,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:14,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:14,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:28:14,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:14,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:28:14,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:14,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:14,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:14,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:14,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:14,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-09-21 12:28:14,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:14,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:14,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:14,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-21 12:28:14,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:14,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-21 12:28:14,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:14,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:28:14,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:14,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-21 12:28:14,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:14,823 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 183 proven. 5 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2020-09-21 12:28:14,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365458672] [2020-09-21 12:28:14,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:28:14,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-21 12:28:14,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340733502] [2020-09-21 12:28:14,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:28:14,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:28:14,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:28:14,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:28:14,826 INFO L87 Difference]: Start difference. First operand 1547 states and 1667 transitions. Second operand 6 states. [2020-09-21 12:28:16,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:28:16,310 INFO L93 Difference]: Finished difference Result 3094 states and 3337 transitions. [2020-09-21 12:28:16,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:28:16,315 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 291 [2020-09-21 12:28:16,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:28:16,318 INFO L225 Difference]: With dead ends: 3094 [2020-09-21 12:28:16,318 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 12:28:16,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:28:16,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 12:28:16,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 12:28:16,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 12:28:16,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 12:28:16,325 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 291 [2020-09-21 12:28:16,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:28:16,326 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 12:28:16,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:28:16,326 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 12:28:16,326 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 12:28:16,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 12:28:16,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 12:28:16,670 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2020-09-21 12:28:16,853 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2020-09-21 12:28:17,085 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2020-09-21 12:28:17,488 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2020-09-21 12:28:17,636 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2020-09-21 12:28:18,867 WARN L193 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 174 [2020-09-21 12:28:19,416 WARN L193 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 174 [2020-09-21 12:28:20,877 WARN L193 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 201 DAG size of output: 70 [2020-09-21 12:28:21,861 WARN L193 SmtUtils]: Spent 930.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 64