/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:26:06,383 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:26:06,386 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:26:06,431 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:26:06,431 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:26:06,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:26:06,445 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:26:06,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:26:06,451 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:26:06,455 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:26:06,456 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:26:06,458 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:26:06,459 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:26:06,462 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:26:06,467 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:26:06,469 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:26:06,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:26:06,474 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:26:06,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:26:06,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:26:06,486 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:26:06,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:26:06,489 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:26:06,490 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:26:06,495 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:26:06,495 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:26:06,495 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:26:06,498 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:26:06,499 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:26:06,501 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:26:06,501 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:26:06,502 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:26:06,503 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:26:06,504 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:26:06,505 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:26:06,505 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:26:06,506 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:26:06,506 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:26:06,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:26:06,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:26:06,509 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:26:06,510 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 08:26:06,554 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:26:06,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:26:06,557 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:26:06,557 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:26:06,557 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:26:06,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:26:06,558 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:26:06,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:26:06,558 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:26:06,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:26:06,560 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:26:06,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:26:06,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:26:06,561 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:26:06,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:26:06,561 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:26:06,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:26:06,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:26:06,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:26:06,562 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:26:06,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:26:06,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:26:06,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:26:06,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:26:06,563 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:26:06,563 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:26:06,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:26:06,563 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:26:06,564 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:26:06,564 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 08:26:06,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:26:06,873 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:26:06,877 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:26:06,879 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:26:06,879 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:26:06,880 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label52.c [2020-10-13 08:26:06,938 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e525f06d/deabe62e25d649f4bdcf2afb7b0cf411/FLAGd1c33ac69 [2020-10-13 08:26:07,761 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:26:07,762 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label52.c [2020-10-13 08:26:07,796 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e525f06d/deabe62e25d649f4bdcf2afb7b0cf411/FLAGd1c33ac69 [2020-10-13 08:26:08,255 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e525f06d/deabe62e25d649f4bdcf2afb7b0cf411 [2020-10-13 08:26:08,264 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:26:08,266 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:26:08,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:26:08,268 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:26:08,271 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:26:08,272 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:26:08" (1/1) ... [2020-10-13 08:26:08,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34b6ae2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:26:08, skipping insertion in model container [2020-10-13 08:26:08,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:26:08" (1/1) ... [2020-10-13 08:26:08,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:26:08,440 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:26:10,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:26:10,200 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:26:10,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:26:10,866 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:26:10,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:26:10 WrapperNode [2020-10-13 08:26:10,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:26:10,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:26:10,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:26:10,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:26:10,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:26:10" (1/1) ... [2020-10-13 08:26:10,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:26:10" (1/1) ... [2020-10-13 08:26:10,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:26:10" (1/1) ... [2020-10-13 08:26:10,956 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:26:10" (1/1) ... [2020-10-13 08:26:11,060 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:26:10" (1/1) ... [2020-10-13 08:26:11,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:26:10" (1/1) ... [2020-10-13 08:26:11,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:26:10" (1/1) ... [2020-10-13 08:26:11,171 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:26:11,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:26:11,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:26:11,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:26:11,173 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:26:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:26:11,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:26:11,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:26:11,252 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:26:11,252 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:26:11,252 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:26:11,253 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:26:11,253 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:26:11,254 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:26:11,254 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:26:11,254 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:26:11,255 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:26:11,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:26:11,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:26:11,255 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:26:11,255 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:26:11,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:26:11,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:26:16,243 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:26:16,243 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:26:16,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:26:16 BoogieIcfgContainer [2020-10-13 08:26:16,258 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:26:16,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:26:16,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:26:16,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:26:16,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:26:08" (1/3) ... [2020-10-13 08:26:16,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f21cef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:26:16, skipping insertion in model container [2020-10-13 08:26:16,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:26:10" (2/3) ... [2020-10-13 08:26:16,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f21cef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:26:16, skipping insertion in model container [2020-10-13 08:26:16,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:26:16" (3/3) ... [2020-10-13 08:26:16,269 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label52.c [2020-10-13 08:26:16,281 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:26:16,293 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:26:16,309 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:26:16,339 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:26:16,339 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:26:16,339 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:26:16,339 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:26:16,340 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:26:16,340 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:26:16,340 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:26:16,340 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:26:16,379 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-13 08:26:16,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-13 08:26:16,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:26:16,389 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] [2020-10-13 08:26:16,390 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:26:16,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:26:16,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1360305261, now seen corresponding path program 1 times [2020-10-13 08:26:16,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:26:16,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378190417] [2020-10-13 08:26:16,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:26:16,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:16,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:17,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:17,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 08:26:17,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:17,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 455 [2020-10-13 08:26:17,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:17,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:26:17,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:26:17,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 08:26:17,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:26:17,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:26:17,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:17,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:17,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:17,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:26:17,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:17,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 08:26:17,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:17,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:26:17,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:17,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:26:17,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:17,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:26:17,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378190417] [2020-10-13 08:26:17,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:26:17,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 08:26:17,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323541647] [2020-10-13 08:26:17,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:26:17,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:26:17,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:26:17,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:26:17,195 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 5 states. [2020-10-13 08:26:25,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:26:25,890 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-13 08:26:25,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:26:25,893 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-10-13 08:26:25,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:26:25,934 INFO L225 Difference]: With dead ends: 2471 [2020-10-13 08:26:25,935 INFO L226 Difference]: Without dead ends: 1568 [2020-10-13 08:26:25,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:26:25,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-13 08:26:26,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-13 08:26:26,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-13 08:26:26,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2521 transitions. [2020-10-13 08:26:26,150 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2521 transitions. Word has length 36 [2020-10-13 08:26:26,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:26:26,151 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2521 transitions. [2020-10-13 08:26:26,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:26:26,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2521 transitions. [2020-10-13 08:26:26,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-13 08:26:26,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:26:26,158 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:26:26,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:26:26,159 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:26:26,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:26:26,159 INFO L82 PathProgramCache]: Analyzing trace with hash -704650251, now seen corresponding path program 1 times [2020-10-13 08:26:26,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:26:26,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097726731] [2020-10-13 08:26:26,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:26:26,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:26,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:26,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:27,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:27,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 08:26:27,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:26:27,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 991 [2020-10-13 08:26:27,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:27,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:26:27,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-13 08:26:27,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 08:26:27,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:26:27,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:26:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:27,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:27,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:27,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:26:27,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:27,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:26:27,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:27,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:26:27,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:27,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:26:27,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:26:27,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:26:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:27,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:27,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:27,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 08:26:27,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:27,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 08:26:27,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:27,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:26:27,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:27,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 08:26:27,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-13 08:26:27,483 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:26:27,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097726731] [2020-10-13 08:26:27,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:26:27,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:26:27,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41089458] [2020-10-13 08:26:27,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:26:27,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:26:27,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:26:27,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:26:27,489 INFO L87 Difference]: Start difference. First operand 1553 states and 2521 transitions. Second operand 5 states. [2020-10-13 08:26:37,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:26:37,175 INFO L93 Difference]: Finished difference Result 4672 states and 7649 transitions. [2020-10-13 08:26:37,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:26:37,178 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-13 08:26:37,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:26:37,202 INFO L225 Difference]: With dead ends: 4672 [2020-10-13 08:26:37,203 INFO L226 Difference]: Without dead ends: 3125 [2020-10-13 08:26:37,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:26:37,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2020-10-13 08:26:37,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 3109. [2020-10-13 08:26:37,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3109 states. [2020-10-13 08:26:37,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3109 states to 3109 states and 4247 transitions. [2020-10-13 08:26:37,306 INFO L78 Accepts]: Start accepts. Automaton has 3109 states and 4247 transitions. Word has length 111 [2020-10-13 08:26:37,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:26:37,307 INFO L479 AbstractCegarLoop]: Abstraction has 3109 states and 4247 transitions. [2020-10-13 08:26:37,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:26:37,308 INFO L276 IsEmpty]: Start isEmpty. Operand 3109 states and 4247 transitions. [2020-10-13 08:26:37,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 08:26:37,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:26:37,311 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:26:37,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:26:37,312 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:26:37,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:26:37,312 INFO L82 PathProgramCache]: Analyzing trace with hash 938927220, now seen corresponding path program 1 times [2020-10-13 08:26:37,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:26:37,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521076817] [2020-10-13 08:26:37,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:26:37,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:37,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:37,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:38,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:38,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:38,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 08:26:38,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:26:38,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1094 [2020-10-13 08:26:38,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:38,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:26:38,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 08:26:38,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 08:26:38,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:38,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:26:38,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:38,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:38,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:38,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:26:38,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:38,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:26:38,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:38,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:26:38,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:38,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:26:38,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:38,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:26:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:38,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:38,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:38,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 08:26:38,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:38,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 08:26:38,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:38,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:26:38,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:38,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 08:26:38,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:38,676 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:26:38,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521076817] [2020-10-13 08:26:38,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:26:38,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:26:38,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200944075] [2020-10-13 08:26:38,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:26:38,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:26:38,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:26:38,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:26:38,679 INFO L87 Difference]: Start difference. First operand 3109 states and 4247 transitions. Second operand 5 states. [2020-10-13 08:26:48,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:26:48,798 INFO L93 Difference]: Finished difference Result 7784 states and 11134 transitions. [2020-10-13 08:26:48,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:26:48,802 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-13 08:26:48,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:26:48,828 INFO L225 Difference]: With dead ends: 7784 [2020-10-13 08:26:48,828 INFO L226 Difference]: Without dead ends: 4681 [2020-10-13 08:26:48,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:26:48,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2020-10-13 08:26:48,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 4673. [2020-10-13 08:26:48,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4673 states. [2020-10-13 08:26:48,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4673 states to 4673 states and 6164 transitions. [2020-10-13 08:26:48,967 INFO L78 Accepts]: Start accepts. Automaton has 4673 states and 6164 transitions. Word has length 114 [2020-10-13 08:26:48,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:26:48,968 INFO L479 AbstractCegarLoop]: Abstraction has 4673 states and 6164 transitions. [2020-10-13 08:26:48,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:26:48,969 INFO L276 IsEmpty]: Start isEmpty. Operand 4673 states and 6164 transitions. [2020-10-13 08:26:48,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-13 08:26:48,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:26:48,972 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:26:48,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:26:48,973 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:26:48,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:26:48,973 INFO L82 PathProgramCache]: Analyzing trace with hash 65793188, now seen corresponding path program 1 times [2020-10-13 08:26:48,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:26:48,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593347461] [2020-10-13 08:26:48,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:26:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:49,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:49,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:49,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:49,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 08:26:49,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:26:49,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 822 [2020-10-13 08:26:49,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:49,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:26:49,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-13 08:26:49,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 08:26:49,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:26:49,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:26:49,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:49,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:49,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:49,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:26:49,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:49,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:26:49,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:49,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:26:49,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:49,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:26:49,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:26:49,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:26:49,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:26:50,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:26:50,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:26:50,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 08:26:50,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:26:50,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-13 08:26:50,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:26:50,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:26:50,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:26:50,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 08:26:50,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:26:50,271 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:26:50,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593347461] [2020-10-13 08:26:50,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:26:50,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:26:50,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720461039] [2020-10-13 08:26:50,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:26:50,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:26:50,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:26:50,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:26:50,275 INFO L87 Difference]: Start difference. First operand 4673 states and 6164 transitions. Second operand 5 states. [2020-10-13 08:27:02,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:27:02,017 INFO L93 Difference]: Finished difference Result 14011 states and 18738 transitions. [2020-10-13 08:27:02,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:27:02,019 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-13 08:27:02,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:27:02,071 INFO L225 Difference]: With dead ends: 14011 [2020-10-13 08:27:02,071 INFO L226 Difference]: Without dead ends: 9344 [2020-10-13 08:27:02,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:27:02,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9344 states. [2020-10-13 08:27:02,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9344 to 9332. [2020-10-13 08:27:02,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9332 states. [2020-10-13 08:27:02,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9332 states to 9332 states and 11757 transitions. [2020-10-13 08:27:02,387 INFO L78 Accepts]: Start accepts. Automaton has 9332 states and 11757 transitions. Word has length 154 [2020-10-13 08:27:02,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:27:02,389 INFO L479 AbstractCegarLoop]: Abstraction has 9332 states and 11757 transitions. [2020-10-13 08:27:02,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:27:02,389 INFO L276 IsEmpty]: Start isEmpty. Operand 9332 states and 11757 transitions. [2020-10-13 08:27:02,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-13 08:27:02,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:27:02,393 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:27:02,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:27:02,394 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:27:02,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:27:02,394 INFO L82 PathProgramCache]: Analyzing trace with hash 2079318969, now seen corresponding path program 1 times [2020-10-13 08:27:02,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:27:02,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846427340] [2020-10-13 08:27:02,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:27:02,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:02,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:02,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:03,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:03,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 08:27:03,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 08:27:03,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1018 [2020-10-13 08:27:03,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:03,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:27:03,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-13 08:27:03,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 08:27:03,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:03,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:27:03,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:03,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:03,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:03,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:27:03,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:03,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:27:03,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:03,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:27:03,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:03,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:27:03,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:03,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:27:03,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:03,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:03,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:03,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 08:27:03,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:03,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-13 08:27:03,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:03,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:27:03,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:03,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-13 08:27:03,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:03,854 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:27:03,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846427340] [2020-10-13 08:27:03,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:27:03,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:27:03,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887155720] [2020-10-13 08:27:03,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:27:03,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:27:03,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:27:03,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:27:03,858 INFO L87 Difference]: Start difference. First operand 9332 states and 11757 transitions. Second operand 5 states. [2020-10-13 08:27:15,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:27:15,260 INFO L93 Difference]: Finished difference Result 23323 states and 30263 transitions. [2020-10-13 08:27:15,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:27:15,263 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-13 08:27:15,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:27:15,345 INFO L225 Difference]: With dead ends: 23323 [2020-10-13 08:27:15,348 INFO L226 Difference]: Without dead ends: 13997 [2020-10-13 08:27:15,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:27:15,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13997 states. [2020-10-13 08:27:15,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13997 to 13215. [2020-10-13 08:27:15,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13215 states. [2020-10-13 08:27:15,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13215 states to 13215 states and 16474 transitions. [2020-10-13 08:27:16,571 INFO L78 Accepts]: Start accepts. Automaton has 13215 states and 16474 transitions. Word has length 157 [2020-10-13 08:27:16,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:27:16,572 INFO L479 AbstractCegarLoop]: Abstraction has 13215 states and 16474 transitions. [2020-10-13 08:27:16,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:27:16,572 INFO L276 IsEmpty]: Start isEmpty. Operand 13215 states and 16474 transitions. [2020-10-13 08:27:16,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-13 08:27:16,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:27:16,577 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:27:16,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:27:16,578 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:27:16,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:27:16,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1266009002, now seen corresponding path program 1 times [2020-10-13 08:27:16,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:27:16,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697622345] [2020-10-13 08:27:16,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:27:16,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:16,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:16,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:16,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:17,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:19,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:19,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-13 08:27:19,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:27:19,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3142 [2020-10-13 08:27:19,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:19,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:27:19,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-10-13 08:27:19,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 08:27:19,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:19,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:27:19,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:19,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:19,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:19,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:27:19,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:19,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:27:19,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:19,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:27:19,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:19,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:27:19,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:19,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:27:19,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:19,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:19,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:19,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 08:27:19,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:19,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 08:27:19,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:19,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:27:19,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:19,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:27:19,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:19,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 08:27:19,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:19,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:19,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:19,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 08:27:19,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:19,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 08:27:19,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:19,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:27:19,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:19,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 08:27:19,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:27:20,041 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-13 08:27:20,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697622345] [2020-10-13 08:27:20,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:27:20,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:27:20,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138086451] [2020-10-13 08:27:20,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:27:20,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:27:20,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:27:20,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:27:20,047 INFO L87 Difference]: Start difference. First operand 13215 states and 16474 transitions. Second operand 5 states. [2020-10-13 08:27:32,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:27:32,443 INFO L93 Difference]: Finished difference Result 28764 states and 36924 transitions. [2020-10-13 08:27:32,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:27:32,445 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-13 08:27:32,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:27:32,514 INFO L225 Difference]: With dead ends: 28764 [2020-10-13 08:27:32,514 INFO L226 Difference]: Without dead ends: 15555 [2020-10-13 08:27:32,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:27:32,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15555 states. [2020-10-13 08:27:33,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15555 to 15543. [2020-10-13 08:27:33,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15543 states. [2020-10-13 08:27:33,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15543 states to 15543 states and 19161 transitions. [2020-10-13 08:27:33,041 INFO L78 Accepts]: Start accepts. Automaton has 15543 states and 19161 transitions. Word has length 185 [2020-10-13 08:27:33,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:27:33,041 INFO L479 AbstractCegarLoop]: Abstraction has 15543 states and 19161 transitions. [2020-10-13 08:27:33,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:27:33,042 INFO L276 IsEmpty]: Start isEmpty. Operand 15543 states and 19161 transitions. [2020-10-13 08:27:33,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-13 08:27:33,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:27:33,048 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:27:33,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:27:33,049 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:27:33,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:27:33,049 INFO L82 PathProgramCache]: Analyzing trace with hash -602995833, now seen corresponding path program 1 times [2020-10-13 08:27:33,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:27:33,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189588753] [2020-10-13 08:27:33,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:27:33,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:33,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:33,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:33,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:35,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:35,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:37,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:37,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-13 08:27:37,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:27:37,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4768 [2020-10-13 08:27:37,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:37,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:27:37,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-13 08:27:37,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 08:27:37,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:38,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:27:38,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:38,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:38,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:38,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:27:38,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:38,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:27:38,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:38,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:27:38,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:38,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:27:38,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:38,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:27:38,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:38,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:38,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:38,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:27:38,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:38,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 08:27:38,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:38,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:27:38,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:38,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:27:38,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:27:38,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 08:27:38,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:38,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:38,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:38,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 08:27:38,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:38,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 08:27:38,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:38,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:27:38,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:38,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 08:27:38,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:38,349 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-13 08:27:38,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189588753] [2020-10-13 08:27:38,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:27:38,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:27:38,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161208278] [2020-10-13 08:27:38,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:27:38,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:27:38,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:27:38,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:27:38,353 INFO L87 Difference]: Start difference. First operand 15543 states and 19161 transitions. Second operand 5 states. [2020-10-13 08:27:46,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:27:46,941 INFO L93 Difference]: Finished difference Result 31104 states and 38423 transitions. [2020-10-13 08:27:46,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:27:46,949 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 202 [2020-10-13 08:27:46,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:27:47,010 INFO L225 Difference]: With dead ends: 31104 [2020-10-13 08:27:47,011 INFO L226 Difference]: Without dead ends: 15555 [2020-10-13 08:27:47,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:27:47,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15555 states. [2020-10-13 08:27:47,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15555 to 15543. [2020-10-13 08:27:47,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15543 states. [2020-10-13 08:27:47,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15543 states to 15543 states and 19157 transitions. [2020-10-13 08:27:47,517 INFO L78 Accepts]: Start accepts. Automaton has 15543 states and 19157 transitions. Word has length 202 [2020-10-13 08:27:47,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:27:47,518 INFO L479 AbstractCegarLoop]: Abstraction has 15543 states and 19157 transitions. [2020-10-13 08:27:47,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:27:47,518 INFO L276 IsEmpty]: Start isEmpty. Operand 15543 states and 19157 transitions. [2020-10-13 08:27:47,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-13 08:27:47,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:27:47,525 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:27:47,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:27:47,526 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:27:47,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:27:47,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1292742292, now seen corresponding path program 1 times [2020-10-13 08:27:47,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:27:47,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645345474] [2020-10-13 08:27:47,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:27:47,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:47,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:47,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:48,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:48,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:48,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-13 08:27:48,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:27:48,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1185 [2020-10-13 08:27:48,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:48,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:27:48,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 200 [2020-10-13 08:27:48,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 08:27:48,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:27:48,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:27:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:48,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:48,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:48,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:27:48,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:48,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:27:48,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:48,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:27:48,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:48,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:27:48,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:48,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:27:48,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:27:48,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:27:49,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:27:49,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-13 08:27:49,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:27:49,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-13 08:27:49,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:27:49,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:27:49,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:27:49,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-13 08:27:49,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:27:49,236 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:27:49,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645345474] [2020-10-13 08:27:49,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:27:49,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:27:49,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888400718] [2020-10-13 08:27:49,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:27:49,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:27:49,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:27:49,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:27:49,239 INFO L87 Difference]: Start difference. First operand 15543 states and 19157 transitions. Second operand 5 states. [2020-10-13 08:28:00,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:28:00,187 INFO L93 Difference]: Finished difference Result 31112 states and 38422 transitions. [2020-10-13 08:28:00,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:28:00,191 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 226 [2020-10-13 08:28:00,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:28:00,249 INFO L225 Difference]: With dead ends: 31112 [2020-10-13 08:28:00,249 INFO L226 Difference]: Without dead ends: 15555 [2020-10-13 08:28:00,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:28:00,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15555 states. [2020-10-13 08:28:00,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15555 to 15543. [2020-10-13 08:28:00,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15543 states. [2020-10-13 08:28:00,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15543 states to 15543 states and 19155 transitions. [2020-10-13 08:28:00,593 INFO L78 Accepts]: Start accepts. Automaton has 15543 states and 19155 transitions. Word has length 226 [2020-10-13 08:28:00,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:28:00,594 INFO L479 AbstractCegarLoop]: Abstraction has 15543 states and 19155 transitions. [2020-10-13 08:28:00,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:28:00,594 INFO L276 IsEmpty]: Start isEmpty. Operand 15543 states and 19155 transitions. [2020-10-13 08:28:00,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-13 08:28:00,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:28:00,609 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:28:00,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:28:00,610 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:28:00,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:28:00,610 INFO L82 PathProgramCache]: Analyzing trace with hash 479300356, now seen corresponding path program 1 times [2020-10-13 08:28:00,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:28:00,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791062980] [2020-10-13 08:28:00,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:28:00,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:00,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:00,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:01,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:03,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:03,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-13 08:28:03,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:28:03,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2854 [2020-10-13 08:28:03,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:03,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:28:03,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 225 [2020-10-13 08:28:03,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 08:28:03,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:03,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:28:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:03,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:03,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:03,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:28:03,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:03,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:28:03,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:03,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:28:03,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:03,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:28:03,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:03,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:28:03,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:03,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:03,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:03,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 08:28:03,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:03,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 08:28:03,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:03,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:28:03,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:03,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:28:03,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:03,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 08:28:03,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:03,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:03,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:03,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 08:28:03,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:03,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-13 08:28:03,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:03,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:28:03,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:03,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-13 08:28:03,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:04,013 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-13 08:28:04,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1791062980] [2020-10-13 08:28:04,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:28:04,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:28:04,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98625888] [2020-10-13 08:28:04,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:28:04,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:28:04,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:28:04,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:28:04,030 INFO L87 Difference]: Start difference. First operand 15543 states and 19155 transitions. Second operand 5 states. [2020-10-13 08:28:20,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:28:20,351 INFO L93 Difference]: Finished difference Result 34199 states and 43339 transitions. [2020-10-13 08:28:20,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:28:20,353 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 249 [2020-10-13 08:28:20,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:28:20,402 INFO L225 Difference]: With dead ends: 34199 [2020-10-13 08:28:20,402 INFO L226 Difference]: Without dead ends: 18662 [2020-10-13 08:28:20,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:28:20,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18662 states. [2020-10-13 08:28:20,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18662 to 18646. [2020-10-13 08:28:20,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18646 states. [2020-10-13 08:28:20,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18646 states to 18646 states and 22937 transitions. [2020-10-13 08:28:20,999 INFO L78 Accepts]: Start accepts. Automaton has 18646 states and 22937 transitions. Word has length 249 [2020-10-13 08:28:20,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:28:21,000 INFO L479 AbstractCegarLoop]: Abstraction has 18646 states and 22937 transitions. [2020-10-13 08:28:21,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:28:21,001 INFO L276 IsEmpty]: Start isEmpty. Operand 18646 states and 22937 transitions. [2020-10-13 08:28:21,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 724 [2020-10-13 08:28:21,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:28:21,064 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:28:21,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 08:28:21,064 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:28:21,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:28:21,065 INFO L82 PathProgramCache]: Analyzing trace with hash 348673262, now seen corresponding path program 1 times [2020-10-13 08:28:21,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:28:21,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099377292] [2020-10-13 08:28:21,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:28:21,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:21,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:22,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:22,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:23,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:26,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:26,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 739 [2020-10-13 08:28:26,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:28:26,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-13 08:28:26,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:26,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:28:26,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 697 [2020-10-13 08:28:26,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 08:28:26,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:28:26,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:28:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:26,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:26,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:26,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:28:26,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:26,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 08:28:26,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:26,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:28:26,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:26,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:28:26,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:28:26,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:28:26,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:26,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:26,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:26,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 08:28:26,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:26,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 08:28:26,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:26,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:28:26,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:26,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:28:26,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:28:26,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 08:28:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:26,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:27,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:27,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 598 [2020-10-13 08:28:27,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:27,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 663 [2020-10-13 08:28:27,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:27,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:28:27,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:27,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 586 [2020-10-13 08:28:27,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:27,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:28:27,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:27,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:28,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:28,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-13 08:28:28,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:28,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 640 [2020-10-13 08:28:28,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:28,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:28:28,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:28,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-13 08:28:28,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:28,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:28:28,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:28,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:28,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:28,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 08:28:28,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:28,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 08:28:28,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:28,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:28:28,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:28,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 08:28:28,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:29,084 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-13 08:28:29,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099377292] [2020-10-13 08:28:29,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:28:29,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:28:29,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045651824] [2020-10-13 08:28:29,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:28:29,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:28:29,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:28:29,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:28:29,087 INFO L87 Difference]: Start difference. First operand 18646 states and 22937 transitions. Second operand 6 states. [2020-10-13 08:28:48,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:28:48,497 INFO L93 Difference]: Finished difference Result 55911 states and 70426 transitions. [2020-10-13 08:28:48,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 08:28:48,501 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 723 [2020-10-13 08:28:48,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:28:48,610 INFO L225 Difference]: With dead ends: 55911 [2020-10-13 08:28:48,610 INFO L226 Difference]: Without dead ends: 37271 [2020-10-13 08:28:48,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 08:28:48,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37271 states. [2020-10-13 08:28:49,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37271 to 35721. [2020-10-13 08:28:49,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35721 states. [2020-10-13 08:28:49,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35721 states to 35721 states and 44677 transitions. [2020-10-13 08:28:49,267 INFO L78 Accepts]: Start accepts. Automaton has 35721 states and 44677 transitions. Word has length 723 [2020-10-13 08:28:49,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:28:49,269 INFO L479 AbstractCegarLoop]: Abstraction has 35721 states and 44677 transitions. [2020-10-13 08:28:49,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:28:49,269 INFO L276 IsEmpty]: Start isEmpty. Operand 35721 states and 44677 transitions. [2020-10-13 08:28:49,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 754 [2020-10-13 08:28:49,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:28:49,366 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:28:49,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 08:28:49,366 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:28:49,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:28:49,367 INFO L82 PathProgramCache]: Analyzing trace with hash 800603538, now seen corresponding path program 1 times [2020-10-13 08:28:49,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:28:49,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033145301] [2020-10-13 08:28:49,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:28:49,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:49,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:49,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:54,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:54,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:54,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 769 [2020-10-13 08:28:54,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:28:54,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-13 08:28:54,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:54,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:28:54,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:28:54,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 08:28:54,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:54,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:28:54,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:54,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:54,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:54,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:28:54,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:54,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:28:54,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:54,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:28:54,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:54,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:28:54,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:54,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:28:54,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:54,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:54,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:54,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 08:28:54,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:54,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 08:28:54,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:54,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:28:54,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 08:28:54,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-13 08:28:54,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:54,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-13 08:28:54,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:55,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:55,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:55,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 604 [2020-10-13 08:28:55,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:55,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-13 08:28:55,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:55,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:28:55,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 601 [2020-10-13 08:28:55,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:28:55,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:55,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:28:55,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:55,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:55,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:55,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-13 08:28:55,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:55,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 08:28:55,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:55,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:28:55,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:55,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:28:55,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:55,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:28:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:28:55,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:28:55,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:28:55,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 08:28:55,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:28:55,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 08:28:55,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:28:55,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:28:55,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:28:55,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:28:55,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:28:56,017 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 58 proven. 113 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 08:28:56,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033145301] [2020-10-13 08:28:56,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:28:56,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 08:28:56,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446285310] [2020-10-13 08:28:56,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 08:28:56,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:28:56,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 08:28:56,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:28:56,021 INFO L87 Difference]: Start difference. First operand 35721 states and 44677 transitions. Second operand 7 states. [2020-10-13 08:29:18,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:29:18,134 INFO L93 Difference]: Finished difference Result 96092 states and 123154 transitions. [2020-10-13 08:29:18,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 08:29:18,137 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 753 [2020-10-13 08:29:18,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:29:18,557 INFO L225 Difference]: With dead ends: 96092 [2020-10-13 08:29:18,557 INFO L226 Difference]: Without dead ends: 60377 [2020-10-13 08:29:18,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-13 08:29:18,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60377 states. [2020-10-13 08:29:19,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60377 to 54933. [2020-10-13 08:29:19,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54933 states. [2020-10-13 08:29:19,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54933 states to 54933 states and 68280 transitions. [2020-10-13 08:29:19,478 INFO L78 Accepts]: Start accepts. Automaton has 54933 states and 68280 transitions. Word has length 753 [2020-10-13 08:29:19,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:29:19,479 INFO L479 AbstractCegarLoop]: Abstraction has 54933 states and 68280 transitions. [2020-10-13 08:29:19,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 08:29:19,479 INFO L276 IsEmpty]: Start isEmpty. Operand 54933 states and 68280 transitions. [2020-10-13 08:29:19,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 788 [2020-10-13 08:29:19,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:29:19,545 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:29:19,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 08:29:19,546 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:29:19,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:29:19,547 INFO L82 PathProgramCache]: Analyzing trace with hash 2043364534, now seen corresponding path program 1 times [2020-10-13 08:29:19,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:29:19,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715673235] [2020-10-13 08:29:19,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:29:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:19,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:20,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:20,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:22,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:24,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:24,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:24,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 803 [2020-10-13 08:29:24,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:29:24,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 08:29:24,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:24,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:29:24,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 761 [2020-10-13 08:29:24,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 08:29:24,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:24,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:29:24,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:24,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:24,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:24,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:29:24,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:24,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 08:29:24,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:24,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:29:24,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:29:24,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:29:24,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:24,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:29:24,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:24,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:24,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:24,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 08:29:24,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:24,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 08:29:24,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:24,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:29:24,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:29:24,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:29:24,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:24,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-13 08:29:25,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:25,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:25,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:25,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 604 [2020-10-13 08:29:25,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:25,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-10-13 08:29:25,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:25,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:29:25,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:29:25,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 592 [2020-10-13 08:29:25,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:25,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-13 08:29:25,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:25,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:25,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:25,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-13 08:29:25,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:25,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-13 08:29:25,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:25,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:29:25,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:29:25,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 307 [2020-10-13 08:29:25,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:29:25,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-13 08:29:25,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:25,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:25,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:29:25,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 08:29:25,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:29:25,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-13 08:29:25,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:29:25,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:29:25,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:29:25,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 08:29:25,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:29:27,264 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2020-10-13 08:29:27,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715673235] [2020-10-13 08:29:27,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:29:27,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:29:27,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619458363] [2020-10-13 08:29:27,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:29:27,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:29:27,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:29:27,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:29:27,267 INFO L87 Difference]: Start difference. First operand 54933 states and 68280 transitions. Second operand 5 states. [2020-10-13 08:29:42,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:29:42,824 INFO L93 Difference]: Finished difference Result 109120 states and 135832 transitions. [2020-10-13 08:29:42,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:29:42,827 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 787 [2020-10-13 08:29:42,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:29:42,969 INFO L225 Difference]: With dead ends: 109120 [2020-10-13 08:29:42,970 INFO L226 Difference]: Without dead ends: 54944 [2020-10-13 08:29:43,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:29:43,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54944 states. [2020-10-13 08:29:43,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54944 to 54933. [2020-10-13 08:29:43,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54933 states. [2020-10-13 08:29:43,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54933 states to 54933 states and 68262 transitions. [2020-10-13 08:29:43,793 INFO L78 Accepts]: Start accepts. Automaton has 54933 states and 68262 transitions. Word has length 787 [2020-10-13 08:29:43,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:29:43,795 INFO L479 AbstractCegarLoop]: Abstraction has 54933 states and 68262 transitions. [2020-10-13 08:29:43,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:29:43,795 INFO L276 IsEmpty]: Start isEmpty. Operand 54933 states and 68262 transitions. [2020-10-13 08:29:43,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 883 [2020-10-13 08:29:43,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:29:43,897 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:29:43,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 08:29:43,897 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:29:43,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:29:43,898 INFO L82 PathProgramCache]: Analyzing trace with hash 449987334, now seen corresponding path program 1 times [2020-10-13 08:29:43,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:29:43,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986310524] [2020-10-13 08:29:43,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:29:44,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:29:44,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:29:45,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking...