/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 11:19:48,279 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 11:19:48,283 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 11:19:48,325 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 11:19:48,325 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 11:19:48,337 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 11:19:48,339 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 11:19:48,343 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 11:19:48,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 11:19:48,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 11:19:48,349 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 11:19:48,350 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 11:19:48,351 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 11:19:48,354 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 11:19:48,356 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 11:19:48,358 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 11:19:48,360 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 11:19:48,362 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 11:19:48,363 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 11:19:48,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 11:19:48,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 11:19:48,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 11:19:48,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 11:19:48,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 11:19:48,380 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 11:19:48,380 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 11:19:48,380 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 11:19:48,383 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 11:19:48,384 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 11:19:48,385 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 11:19:48,386 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 11:19:48,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 11:19:48,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 11:19:48,388 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 11:19:48,390 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 11:19:48,391 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 11:19:48,391 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 11:19:48,391 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 11:19:48,392 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 11:19:48,393 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 11:19:48,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 11:19:48,395 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 11:19:48,429 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 11:19:48,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 11:19:48,430 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 11:19:48,431 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 11:19:48,431 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 11:19:48,431 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 11:19:48,431 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 11:19:48,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 11:19:48,432 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 11:19:48,432 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 11:19:48,432 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 11:19:48,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 11:19:48,432 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 11:19:48,433 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 11:19:48,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 11:19:48,433 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 11:19:48,433 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 11:19:48,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 11:19:48,434 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 11:19:48,434 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 11:19:48,434 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 11:19:48,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:19:48,435 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 11:19:48,435 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 11:19:48,435 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 11:19:48,435 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 11:19:48,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 11:19:48,436 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 11:19:48,436 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 11:19:48,436 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 11:19:48,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 11:19:48,776 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 11:19:48,781 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 11:19:48,784 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 11:19:48,784 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 11:19:48,785 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label22.c [2020-10-12 11:19:48,864 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5eddee54/ee9892d05511464896f7efa30104b69a/FLAGcc3e517da [2020-10-12 11:19:49,508 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 11:19:49,509 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label22.c [2020-10-12 11:19:49,533 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5eddee54/ee9892d05511464896f7efa30104b69a/FLAGcc3e517da [2020-10-12 11:19:49,719 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5eddee54/ee9892d05511464896f7efa30104b69a [2020-10-12 11:19:49,728 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 11:19:49,730 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 11:19:49,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 11:19:49,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 11:19:49,734 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 11:19:49,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:19:49" (1/1) ... [2020-10-12 11:19:49,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d876c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:19:49, skipping insertion in model container [2020-10-12 11:19:49,738 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:19:49" (1/1) ... [2020-10-12 11:19:49,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 11:19:49,831 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 11:19:50,697 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:19:50,707 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 11:19:51,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:19:51,074 INFO L208 MainTranslator]: Completed translation [2020-10-12 11:19:51,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:19:51 WrapperNode [2020-10-12 11:19:51,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 11:19:51,077 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 11:19:51,077 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 11:19:51,077 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 11:19:51,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:19:51" (1/1) ... [2020-10-12 11:19:51,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:19:51" (1/1) ... [2020-10-12 11:19:51,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:19:51" (1/1) ... [2020-10-12 11:19:51,135 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:19:51" (1/1) ... [2020-10-12 11:19:51,223 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:19:51" (1/1) ... [2020-10-12 11:19:51,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:19:51" (1/1) ... [2020-10-12 11:19:51,271 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:19:51" (1/1) ... [2020-10-12 11:19:51,288 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 11:19:51,289 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 11:19:51,289 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 11:19:51,290 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 11:19:51,291 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:19:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:19:51,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 11:19:51,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 11:19:51,360 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 11:19:51,360 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 11:19:51,360 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 11:19:51,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 11:19:51,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 11:19:51,361 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 11:19:51,361 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 11:19:51,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 11:19:51,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 11:19:53,365 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 11:19:53,365 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 11:19:53,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:19:53 BoogieIcfgContainer [2020-10-12 11:19:53,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 11:19:53,374 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 11:19:53,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 11:19:53,377 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 11:19:53,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:19:49" (1/3) ... [2020-10-12 11:19:53,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eebec18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:19:53, skipping insertion in model container [2020-10-12 11:19:53,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:19:51" (2/3) ... [2020-10-12 11:19:53,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eebec18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:19:53, skipping insertion in model container [2020-10-12 11:19:53,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:19:53" (3/3) ... [2020-10-12 11:19:53,382 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label22.c [2020-10-12 11:19:53,393 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 11:19:53,402 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 11:19:53,417 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 11:19:53,446 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 11:19:53,447 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 11:19:53,447 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 11:19:53,447 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 11:19:53,447 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 11:19:53,447 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 11:19:53,448 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 11:19:53,448 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 11:19:53,474 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-12 11:19:53,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-12 11:19:53,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:19:53,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:19:53,493 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:19:53,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:19:53,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1955035064, now seen corresponding path program 1 times [2020-10-12 11:19:53,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:19:53,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137733999] [2020-10-12 11:19:53,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:19:53,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:54,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:54,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:58,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:58,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-12 11:19:58,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:19:58,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4552 [2020-10-12 11:19:58,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:58,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 11:19:58,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:19:58,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-12 11:19:58,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 11:19:59,307 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 61 [2020-10-12 11:20:00,071 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:20:00,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:20:00,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:00,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:00,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:00,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:20:00,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:00,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 11:20:00,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:00,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:20:00,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:20:00,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:20:00,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:00,330 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2020-10-12 11:20:01,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:20:01,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137733999] [2020-10-12 11:20:01,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 11:20:01,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 11:20:01,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481312192] [2020-10-12 11:20:01,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 11:20:01,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:20:01,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 11:20:01,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-12 11:20:01,074 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 14 states. [2020-10-12 11:20:01,437 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-12 11:20:02,190 WARN L193 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 173 [2020-10-12 11:20:02,877 WARN L193 SmtUtils]: Spent 629.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 173 [2020-10-12 11:20:03,721 WARN L193 SmtUtils]: Spent 755.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 181 [2020-10-12 11:20:04,509 WARN L193 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 180 [2020-10-12 11:20:05,469 WARN L193 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 179 [2020-10-12 11:20:06,581 WARN L193 SmtUtils]: Spent 644.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 178 [2020-10-12 11:20:09,577 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 210 DAG size of output: 177 [2020-10-12 11:20:10,474 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 175 [2020-10-12 11:20:12,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:20:12,724 INFO L93 Difference]: Finished difference Result 737 states and 1287 transitions. [2020-10-12 11:20:12,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 11:20:12,728 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 173 [2020-10-12 11:20:12,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:20:12,757 INFO L225 Difference]: With dead ends: 737 [2020-10-12 11:20:12,758 INFO L226 Difference]: Without dead ends: 364 [2020-10-12 11:20:12,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2020-10-12 11:20:12,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-12 11:20:12,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2020-10-12 11:20:12,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-12 11:20:12,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 525 transitions. [2020-10-12 11:20:12,844 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 525 transitions. Word has length 173 [2020-10-12 11:20:12,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:20:12,845 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 525 transitions. [2020-10-12 11:20:12,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 11:20:12,846 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 525 transitions. [2020-10-12 11:20:12,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-12 11:20:12,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:20:12,852 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:20:12,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 11:20:12,852 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:20:12,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:20:12,853 INFO L82 PathProgramCache]: Analyzing trace with hash 951653407, now seen corresponding path program 1 times [2020-10-12 11:20:12,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:20:12,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542856095] [2020-10-12 11:20:12,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:20:12,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:13,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:13,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:14,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:17,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:17,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-12 11:20:17,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:20:17,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 11:20:17,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:17,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 11:20:17,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:20:17,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-12 11:20:17,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 11:20:18,681 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2020-10-12 11:20:18,917 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 83 [2020-10-12 11:20:19,217 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 84 [2020-10-12 11:20:19,442 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 80 [2020-10-12 11:20:19,631 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 77 [2020-10-12 11:20:19,783 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2020-10-12 11:20:20,137 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:20:20,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:20:20,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:20,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:20,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:20,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:20:20,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:20,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 11:20:20,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:20,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:20:20,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:20:20,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:20:20,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:20,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:20:20,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:20,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:20,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:20,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:20:20,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:20,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-12 11:20:20,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:20,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:20:20,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:20:20,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:20:20,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:20,661 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 95 [2020-10-12 11:20:21,175 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:20:21,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1542856095] [2020-10-12 11:20:21,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:20:21,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 11:20:21,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017575569] [2020-10-12 11:20:21,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 11:20:21,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:20:21,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 11:20:21,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-10-12 11:20:21,179 INFO L87 Difference]: Start difference. First operand 364 states and 525 transitions. Second operand 16 states. [2020-10-12 11:20:21,393 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-12 11:20:21,760 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 84 [2020-10-12 11:20:22,056 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 66 [2020-10-12 11:20:22,400 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 90 [2020-10-12 11:20:23,038 WARN L193 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 183 [2020-10-12 11:20:23,852 WARN L193 SmtUtils]: Spent 749.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 203 [2020-10-12 11:20:24,659 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 200 [2020-10-12 11:20:25,043 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 85 [2020-10-12 11:20:26,381 WARN L193 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 197 [2020-10-12 11:20:28,445 WARN L193 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 194 [2020-10-12 11:20:31,333 WARN L193 SmtUtils]: Spent 647.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 191 [2020-10-12 11:20:32,210 WARN L193 SmtUtils]: Spent 693.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 186 [2020-10-12 11:20:34,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:20:34,894 INFO L93 Difference]: Finished difference Result 985 states and 1597 transitions. [2020-10-12 11:20:34,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 11:20:34,895 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 184 [2020-10-12 11:20:34,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:20:34,905 INFO L225 Difference]: With dead ends: 985 [2020-10-12 11:20:34,906 INFO L226 Difference]: Without dead ends: 742 [2020-10-12 11:20:34,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=222, Invalid=590, Unknown=0, NotChecked=0, Total=812 [2020-10-12 11:20:34,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2020-10-12 11:20:35,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 729. [2020-10-12 11:20:35,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 729 states. [2020-10-12 11:20:35,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 999 transitions. [2020-10-12 11:20:35,020 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 999 transitions. Word has length 184 [2020-10-12 11:20:35,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:20:35,021 INFO L479 AbstractCegarLoop]: Abstraction has 729 states and 999 transitions. [2020-10-12 11:20:35,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 11:20:35,022 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 999 transitions. [2020-10-12 11:20:35,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-12 11:20:35,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:20:35,034 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:20:35,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 11:20:35,035 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:20:35,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:20:35,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1544743085, now seen corresponding path program 1 times [2020-10-12 11:20:35,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:20:35,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069776385] [2020-10-12 11:20:35,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:20:35,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:35,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:35,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:36,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:36,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-12 11:20:36,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:20:36,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1697 [2020-10-12 11:20:36,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:36,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:20:36,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:20:36,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-12 11:20:36,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:37,112 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:20:37,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:20:37,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:37,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:37,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:37,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:20:37,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:37,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 11:20:37,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:37,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:20:37,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:20:37,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:20:37,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:20:37,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:20:37,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:37,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:37,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:37,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:37,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:20:37,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:20:37,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-12 11:20:37,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:37,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:20:37,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:20:37,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:20:37,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:20:37,557 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 11:20:37,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069776385] [2020-10-12 11:20:37,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:20:37,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:20:37,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977083569] [2020-10-12 11:20:37,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 11:20:37,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:20:37,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 11:20:37,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:20:37,566 INFO L87 Difference]: Start difference. First operand 729 states and 999 transitions. Second operand 6 states. [2020-10-12 11:20:37,762 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:20:40,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:20:40,298 INFO L93 Difference]: Finished difference Result 1787 states and 2586 transitions. [2020-10-12 11:20:40,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 11:20:40,299 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 194 [2020-10-12 11:20:40,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:20:40,313 INFO L225 Difference]: With dead ends: 1787 [2020-10-12 11:20:40,314 INFO L226 Difference]: Without dead ends: 1179 [2020-10-12 11:20:40,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:20:40,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2020-10-12 11:20:40,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1159. [2020-10-12 11:20:40,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1159 states. [2020-10-12 11:20:40,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1644 transitions. [2020-10-12 11:20:40,386 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1644 transitions. Word has length 194 [2020-10-12 11:20:40,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:20:40,388 INFO L479 AbstractCegarLoop]: Abstraction has 1159 states and 1644 transitions. [2020-10-12 11:20:40,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 11:20:40,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1644 transitions. [2020-10-12 11:20:40,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-12 11:20:40,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:20:40,393 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:20:40,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 11:20:40,395 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:20:40,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:20:40,395 INFO L82 PathProgramCache]: Analyzing trace with hash -880850368, now seen corresponding path program 1 times [2020-10-12 11:20:40,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:20:40,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048646790] [2020-10-12 11:20:40,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:20:40,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:40,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:40,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:41,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:42,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:43,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:43,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-12 11:20:43,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:20:43,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3283 [2020-10-12 11:20:43,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:43,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:20:43,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:20:43,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 11:20:43,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:43,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:20:43,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:43,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:43,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:43,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:20:43,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:43,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 11:20:43,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:43,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:20:43,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:20:43,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:20:43,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:43,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:20:43,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:43,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:44,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:44,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:20:44,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:44,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-12 11:20:44,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:44,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:20:44,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:20:44,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:20:44,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:44,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:20:44,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:44,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:44,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:44,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 11:20:44,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:44,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 11:20:44,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:44,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:20:44,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:20:44,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 11:20:44,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 11:20:44,172 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 11:20:44,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048646790] [2020-10-12 11:20:44,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:20:44,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:20:44,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564228062] [2020-10-12 11:20:44,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:20:44,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:20:44,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:20:44,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:20:44,175 INFO L87 Difference]: Start difference. First operand 1159 states and 1644 transitions. Second operand 7 states. [2020-10-12 11:20:44,348 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:20:47,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:20:47,252 INFO L93 Difference]: Finished difference Result 2701 states and 4052 transitions. [2020-10-12 11:20:47,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 11:20:47,252 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2020-10-12 11:20:47,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:20:47,268 INFO L225 Difference]: With dead ends: 2701 [2020-10-12 11:20:47,268 INFO L226 Difference]: Without dead ends: 2235 [2020-10-12 11:20:47,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-12 11:20:47,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2235 states. [2020-10-12 11:20:47,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2235 to 2209. [2020-10-12 11:20:47,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2209 states. [2020-10-12 11:20:47,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2209 states to 2209 states and 3215 transitions. [2020-10-12 11:20:47,360 INFO L78 Accepts]: Start accepts. Automaton has 2209 states and 3215 transitions. Word has length 203 [2020-10-12 11:20:47,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:20:47,360 INFO L479 AbstractCegarLoop]: Abstraction has 2209 states and 3215 transitions. [2020-10-12 11:20:47,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:20:47,361 INFO L276 IsEmpty]: Start isEmpty. Operand 2209 states and 3215 transitions. [2020-10-12 11:20:47,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-12 11:20:47,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:20:47,367 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:20:47,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 11:20:47,368 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:20:47,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:20:47,368 INFO L82 PathProgramCache]: Analyzing trace with hash -428264028, now seen corresponding path program 1 times [2020-10-12 11:20:47,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:20:47,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381533413] [2020-10-12 11:20:47,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:20:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:47,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:47,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:48,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:48,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:48,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-12 11:20:48,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:20:48,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1315 [2020-10-12 11:20:48,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:48,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:20:48,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 11:20:48,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-12 11:20:48,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:48,985 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:20:48,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:20:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:48,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:49,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:49,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:20:49,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:49,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:20:49,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:49,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:20:49,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:20:49,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:20:49,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 11:20:49,210 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-12 11:20:49,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:20:49,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:49,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:49,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:49,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:20:49,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:49,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-12 11:20:49,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:49,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:20:49,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:20:49,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 11:20:49,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:20:49,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:20:49,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:49,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:49,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:49,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:49,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:20:49,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:20:49,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-12 11:20:49,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:49,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:20:49,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:20:49,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:20:49,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:49,525 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 28 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 11:20:49,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381533413] [2020-10-12 11:20:49,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:20:49,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:20:49,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397974152] [2020-10-12 11:20:49,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:20:49,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:20:49,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:20:49,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:20:49,530 INFO L87 Difference]: Start difference. First operand 2209 states and 3215 transitions. Second operand 7 states. [2020-10-12 11:20:49,959 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:20:50,987 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:20:52,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:20:52,882 INFO L93 Difference]: Finished difference Result 6193 states and 10141 transitions. [2020-10-12 11:20:52,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 11:20:52,882 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 205 [2020-10-12 11:20:52,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:20:52,915 INFO L225 Difference]: With dead ends: 6193 [2020-10-12 11:20:52,915 INFO L226 Difference]: Without dead ends: 4105 [2020-10-12 11:20:52,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-12 11:20:52,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4105 states. [2020-10-12 11:20:53,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4105 to 3966. [2020-10-12 11:20:53,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3966 states. [2020-10-12 11:20:53,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3966 states to 3966 states and 5650 transitions. [2020-10-12 11:20:53,088 INFO L78 Accepts]: Start accepts. Automaton has 3966 states and 5650 transitions. Word has length 205 [2020-10-12 11:20:53,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:20:53,089 INFO L479 AbstractCegarLoop]: Abstraction has 3966 states and 5650 transitions. [2020-10-12 11:20:53,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:20:53,089 INFO L276 IsEmpty]: Start isEmpty. Operand 3966 states and 5650 transitions. [2020-10-12 11:20:53,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-12 11:20:53,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:20:53,101 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 11:20:53,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 11:20:53,102 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:20:53,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:20:53,102 INFO L82 PathProgramCache]: Analyzing trace with hash 313744891, now seen corresponding path program 1 times [2020-10-12 11:20:53,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:20:53,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821837321] [2020-10-12 11:20:53,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:20:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:53,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:53,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:53,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:54,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:56,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:58,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:58,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-12 11:20:58,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:20:58,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 11:20:58,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:58,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:20:58,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 11:20:58,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 11:20:58,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:58,327 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:20:58,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:20:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:58,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:58,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:58,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:20:58,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:58,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 11:20:58,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:58,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:20:58,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:20:58,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:20:58,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:20:58,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:20:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:58,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:58,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:58,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:20:58,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:58,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-12 11:20:58,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:58,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:20:58,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:20:58,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 11:20:58,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 11:20:58,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:20:58,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:58,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:58,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:58,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:58,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:58,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 11:20:58,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:20:58,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 11:20:58,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:58,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:20:58,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:20:58,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 11:20:58,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:58,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 11:20:58,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:20:58,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:20:58,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:20:58,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:20:58,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:20:58,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 11:20:58,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:20:58,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:20:58,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:20:58,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:20:58,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:20:58,792 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 45 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 11:20:58,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821837321] [2020-10-12 11:20:58,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:20:58,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 11:20:58,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749587929] [2020-10-12 11:20:58,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 11:20:58,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:20:58,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 11:20:58,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-12 11:20:58,802 INFO L87 Difference]: Start difference. First operand 3966 states and 5650 transitions. Second operand 10 states. [2020-10-12 11:20:59,043 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:20:59,300 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:20:59,880 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:21:00,154 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 129 [2020-10-12 11:21:05,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:21:05,778 INFO L93 Difference]: Finished difference Result 16506 states and 26364 transitions. [2020-10-12 11:21:05,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 11:21:05,779 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 215 [2020-10-12 11:21:05,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:21:05,851 INFO L225 Difference]: With dead ends: 16506 [2020-10-12 11:21:05,851 INFO L226 Difference]: Without dead ends: 12661 [2020-10-12 11:21:05,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=119, Invalid=387, Unknown=0, NotChecked=0, Total=506 [2020-10-12 11:21:05,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12661 states. [2020-10-12 11:21:06,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12661 to 12630. [2020-10-12 11:21:06,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12630 states. [2020-10-12 11:21:06,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12630 states to 12630 states and 18246 transitions. [2020-10-12 11:21:06,319 INFO L78 Accepts]: Start accepts. Automaton has 12630 states and 18246 transitions. Word has length 215 [2020-10-12 11:21:06,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:21:06,319 INFO L479 AbstractCegarLoop]: Abstraction has 12630 states and 18246 transitions. [2020-10-12 11:21:06,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 11:21:06,320 INFO L276 IsEmpty]: Start isEmpty. Operand 12630 states and 18246 transitions. [2020-10-12 11:21:06,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-12 11:21:06,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:21:06,362 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:21:06,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 11:21:06,363 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:21:06,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:21:06,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1705123304, now seen corresponding path program 1 times [2020-10-12 11:21:06,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:21:06,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001397681] [2020-10-12 11:21:06,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:21:06,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:06,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:06,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:07,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:08,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:11,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:11,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-12 11:21:11,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:21:11,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-12 11:21:11,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:11,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:21:11,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:21:11,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-12 11:21:11,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:11,621 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:21:11,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:21:11,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:11,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:11,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:11,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:21:11,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:11,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 11:21:11,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:11,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:21:11,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:21:11,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:21:11,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:11,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:21:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:11,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:11,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:11,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:11,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:21:11,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:21:11,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 11:21:11,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:11,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:21:11,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:21:11,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:21:11,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:11,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:21:11,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:11,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:11,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:11,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 11:21:11,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:11,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 11:21:11,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:11,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:21:11,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:21:11,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 11:21:11,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:11,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 11:21:11,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:11,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:11,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:11,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:21:11,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:11,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 11:21:11,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:11,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:21:11,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 11:21:11,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:21:11,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:12,028 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 48 proven. 30 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 11:21:12,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001397681] [2020-10-12 11:21:12,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:21:12,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:21:12,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364601539] [2020-10-12 11:21:12,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:21:12,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:21:12,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:21:12,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:21:12,030 INFO L87 Difference]: Start difference. First operand 12630 states and 18246 transitions. Second operand 8 states. [2020-10-12 11:21:12,175 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:21:13,270 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 11:21:15,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:21:15,687 INFO L93 Difference]: Finished difference Result 24260 states and 36899 transitions. [2020-10-12 11:21:15,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 11:21:15,687 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 225 [2020-10-12 11:21:15,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:21:15,765 INFO L225 Difference]: With dead ends: 24260 [2020-10-12 11:21:15,766 INFO L226 Difference]: Without dead ends: 17115 [2020-10-12 11:21:15,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-10-12 11:21:15,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17115 states. [2020-10-12 11:21:16,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17115 to 17077. [2020-10-12 11:21:16,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17077 states. [2020-10-12 11:21:16,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17077 states to 17077 states and 25056 transitions. [2020-10-12 11:21:16,331 INFO L78 Accepts]: Start accepts. Automaton has 17077 states and 25056 transitions. Word has length 225 [2020-10-12 11:21:16,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:21:16,331 INFO L479 AbstractCegarLoop]: Abstraction has 17077 states and 25056 transitions. [2020-10-12 11:21:16,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:21:16,332 INFO L276 IsEmpty]: Start isEmpty. Operand 17077 states and 25056 transitions. [2020-10-12 11:21:16,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-10-12 11:21:16,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:21:16,382 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 11:21:16,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 11:21:16,382 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:21:16,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:21:16,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1813417094, now seen corresponding path program 1 times [2020-10-12 11:21:16,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:21:16,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533384069] [2020-10-12 11:21:16,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:21:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:16,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:16,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:16,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:19,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:20,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:21,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:21,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-12 11:21:21,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:21:21,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 11:21:21,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:21,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 11:21:21,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:21:21,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 11:21:21,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:21,662 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:21:21,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:21:21,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:21,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:21,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:21,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:21:21,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:21,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:21:21,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:21,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:21:21,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:21:21,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:21:21,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:21,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:21:21,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:21,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:21,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:21,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:21:21,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:21,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 11:21:21,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:21,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:21:21,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:21:21,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:21:21,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:21,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:21:21,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:21,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:21,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:21,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 11:21:21,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:21,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-12 11:21:21,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:21,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:21:21,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:21:21,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 11:21:21,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:21,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 11:21:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:21,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:21,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:22,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:22,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-12 11:21:22,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:21:22,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-12 11:21:22,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:22,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:21:22,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:21:22,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 11:21:22,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:22,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-12 11:21:22,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:22,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:22,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:22,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:21:22,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:22,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-12 11:21:22,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:22,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:21:22,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:21:22,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 11:21:22,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:22,273 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 85 proven. 6 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-12 11:21:22,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533384069] [2020-10-12 11:21:22,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:21:22,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:21:22,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505006585] [2020-10-12 11:21:22,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:21:22,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:21:22,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:21:22,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:21:22,276 INFO L87 Difference]: Start difference. First operand 17077 states and 25056 transitions. Second operand 7 states. [2020-10-12 11:21:22,411 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:21:24,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:21:24,055 INFO L93 Difference]: Finished difference Result 26900 states and 40853 transitions. [2020-10-12 11:21:24,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 11:21:24,056 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 267 [2020-10-12 11:21:24,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:21:24,130 INFO L225 Difference]: With dead ends: 26900 [2020-10-12 11:21:24,130 INFO L226 Difference]: Without dead ends: 16995 [2020-10-12 11:21:24,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-12 11:21:24,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16995 states. [2020-10-12 11:21:24,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16995 to 16963. [2020-10-12 11:21:24,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16963 states. [2020-10-12 11:21:24,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16963 states to 16963 states and 24162 transitions. [2020-10-12 11:21:24,756 INFO L78 Accepts]: Start accepts. Automaton has 16963 states and 24162 transitions. Word has length 267 [2020-10-12 11:21:24,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:21:24,757 INFO L479 AbstractCegarLoop]: Abstraction has 16963 states and 24162 transitions. [2020-10-12 11:21:24,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:21:24,757 INFO L276 IsEmpty]: Start isEmpty. Operand 16963 states and 24162 transitions. [2020-10-12 11:21:24,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-10-12 11:21:24,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:21:24,805 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:21:24,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 11:21:24,805 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:21:24,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:21:24,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1652732799, now seen corresponding path program 1 times [2020-10-12 11:21:24,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:21:24,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [762711131] [2020-10-12 11:21:24,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:21:24,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:24,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:25,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:25,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:26,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:26,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-10-12 11:21:26,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:21:26,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1420 [2020-10-12 11:21:26,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:26,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:21:26,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 115 [2020-10-12 11:21:26,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-12 11:21:26,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:26,513 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:21:26,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:21:26,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:26,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:26,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:26,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:21:26,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:26,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:21:26,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:26,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:21:26,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:21:26,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:21:26,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:26,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:21:26,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:26,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:26,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:26,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:21:26,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:26,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 11:21:26,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:26,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:21:26,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:21:26,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:21:26,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:26,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:21:26,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:26,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:26,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:26,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-12 11:21:26,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:26,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-12 11:21:26,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:26,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:21:26,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:21:26,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 11:21:26,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:26,899 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-12 11:21:26,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [762711131] [2020-10-12 11:21:26,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:21:26,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:21:26,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487984539] [2020-10-12 11:21:26,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 11:21:26,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:21:26,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 11:21:26,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 11:21:26,901 INFO L87 Difference]: Start difference. First operand 16963 states and 24162 transitions. Second operand 5 states. [2020-10-12 11:21:27,046 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:21:29,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:21:29,751 INFO L93 Difference]: Finished difference Result 37638 states and 56460 transitions. [2020-10-12 11:21:29,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 11:21:29,752 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 276 [2020-10-12 11:21:29,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:21:29,856 INFO L225 Difference]: With dead ends: 37638 [2020-10-12 11:21:29,856 INFO L226 Difference]: Without dead ends: 27843 [2020-10-12 11:21:29,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:21:29,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27843 states. [2020-10-12 11:21:30,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27843 to 27759. [2020-10-12 11:21:30,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27759 states. [2020-10-12 11:21:30,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27759 states to 27759 states and 39577 transitions. [2020-10-12 11:21:30,620 INFO L78 Accepts]: Start accepts. Automaton has 27759 states and 39577 transitions. Word has length 276 [2020-10-12 11:21:30,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:21:30,621 INFO L479 AbstractCegarLoop]: Abstraction has 27759 states and 39577 transitions. [2020-10-12 11:21:30,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 11:21:30,621 INFO L276 IsEmpty]: Start isEmpty. Operand 27759 states and 39577 transitions. [2020-10-12 11:21:30,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-10-12 11:21:30,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:21:30,683 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:21:30,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 11:21:30,683 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:21:30,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:21:30,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1684822783, now seen corresponding path program 1 times [2020-10-12 11:21:30,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:21:30,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421810301] [2020-10-12 11:21:30,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:21:30,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:30,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:30,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:33,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:35,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:35,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-12 11:21:35,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:21:35,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-12 11:21:35,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:35,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:21:35,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:21:35,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 11:21:35,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:35,959 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:21:35,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:21:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:35,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:35,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:35,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:21:35,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:35,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 11:21:35,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:35,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:21:35,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:21:35,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:21:35,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:21:36,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:21:36,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:36,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:36,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:36,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 11:21:36,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:36,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-12 11:21:36,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:36,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:21:36,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:21:36,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 11:21:36,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:36,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 11:21:36,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:36,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:36,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:36,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 11:21:36,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:36,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-12 11:21:36,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:36,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:21:36,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-12 11:21:36,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:21:36,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:36,399 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 104 proven. 27 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 11:21:36,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421810301] [2020-10-12 11:21:36,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:21:36,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:21:36,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350653923] [2020-10-12 11:21:36,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:21:36,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:21:36,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:21:36,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:21:36,401 INFO L87 Difference]: Start difference. First operand 27759 states and 39577 transitions. Second operand 7 states. [2020-10-12 11:21:36,535 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:21:37,265 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 11:21:39,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:21:39,448 INFO L93 Difference]: Finished difference Result 59456 states and 83720 transitions. [2020-10-12 11:21:39,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 11:21:39,449 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 283 [2020-10-12 11:21:39,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:21:39,579 INFO L225 Difference]: With dead ends: 59456 [2020-10-12 11:21:39,579 INFO L226 Difference]: Without dead ends: 39829 [2020-10-12 11:21:39,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-12 11:21:39,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39829 states. [2020-10-12 11:21:40,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39829 to 39601. [2020-10-12 11:21:40,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39601 states. [2020-10-12 11:21:40,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39601 states to 39601 states and 53034 transitions. [2020-10-12 11:21:40,472 INFO L78 Accepts]: Start accepts. Automaton has 39601 states and 53034 transitions. Word has length 283 [2020-10-12 11:21:40,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:21:40,472 INFO L479 AbstractCegarLoop]: Abstraction has 39601 states and 53034 transitions. [2020-10-12 11:21:40,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:21:40,473 INFO L276 IsEmpty]: Start isEmpty. Operand 39601 states and 53034 transitions. [2020-10-12 11:21:40,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-12 11:21:40,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:21:40,510 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 11:21:40,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 11:21:40,510 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:21:40,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:21:40,510 INFO L82 PathProgramCache]: Analyzing trace with hash 612074901, now seen corresponding path program 1 times [2020-10-12 11:21:40,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:21:40,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [897056307] [2020-10-12 11:21:40,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:21:40,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:40,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:40,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:41,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:42,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:43,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:45,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:45,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:45,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-12 11:21:45,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 11:21:45,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-12 11:21:45,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:45,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 11:21:45,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:21:45,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-12 11:21:45,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:45,808 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:21:45,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:21:45,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:45,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:45,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:45,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:21:45,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:45,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:21:45,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:45,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:21:45,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:21:45,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:21:45,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:45,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:21:45,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:45,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:45,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:45,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:21:45,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:45,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 11:21:45,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:45,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:21:45,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:21:45,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:21:45,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:45,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:21:46,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:46,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:46,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:46,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 11:21:46,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:46,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 11:21:46,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:46,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:21:46,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:21:46,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 11:21:46,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:46,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 11:21:46,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:21:46,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:21:46,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:21:46,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 11:21:46,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:21:46,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-12 11:21:46,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:21:46,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:21:46,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:21:46,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 11:21:46,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:21:46,601 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 117 proven. 35 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-12 11:21:46,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [897056307] [2020-10-12 11:21:46,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:21:46,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 11:21:46,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254877587] [2020-10-12 11:21:46,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 11:21:46,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:21:46,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 11:21:46,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-12 11:21:46,603 INFO L87 Difference]: Start difference. First operand 39601 states and 53034 transitions. Second operand 11 states. [2020-10-12 11:21:46,785 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-12 11:21:47,305 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 134 [2020-10-12 11:21:48,059 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 133 [2020-10-12 11:21:48,897 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:21:49,219 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 134 [2020-10-12 11:21:50,124 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 11:21:50,463 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 11:21:51,303 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 135 [2020-10-12 11:21:59,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:21:59,213 INFO L93 Difference]: Finished difference Result 142279 states and 219770 transitions. [2020-10-12 11:21:59,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-12 11:21:59,214 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 288 [2020-10-12 11:21:59,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:21:59,817 INFO L225 Difference]: With dead ends: 142279 [2020-10-12 11:21:59,817 INFO L226 Difference]: Without dead ends: 111226 [2020-10-12 11:21:59,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=412, Invalid=1750, Unknown=0, NotChecked=0, Total=2162 [2020-10-12 11:22:00,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111226 states. [2020-10-12 11:22:04,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111226 to 108555. [2020-10-12 11:22:04,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108555 states. [2020-10-12 11:22:05,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108555 states to 108555 states and 148170 transitions. [2020-10-12 11:22:05,027 INFO L78 Accepts]: Start accepts. Automaton has 108555 states and 148170 transitions. Word has length 288 [2020-10-12 11:22:05,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:22:05,028 INFO L479 AbstractCegarLoop]: Abstraction has 108555 states and 148170 transitions. [2020-10-12 11:22:05,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 11:22:05,028 INFO L276 IsEmpty]: Start isEmpty. Operand 108555 states and 148170 transitions. [2020-10-12 11:22:05,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-12 11:22:05,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:22:05,191 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-10-12 11:22:05,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 11:22:05,192 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:22:05,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:22:05,192 INFO L82 PathProgramCache]: Analyzing trace with hash 615690727, now seen corresponding path program 1 times [2020-10-12 11:22:05,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:22:05,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362892177] [2020-10-12 11:22:05,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:22:05,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:05,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:05,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:06,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:10,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:10,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-12 11:22:10,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:22:10,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-12 11:22:10,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:10,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:22:10,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:22:10,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 11:22:10,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:10,474 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:22:10,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:22:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:10,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:10,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:10,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:22:10,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:10,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:22:10,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:10,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:22:10,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:22:10,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:22:10,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:10,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:22:10,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:10,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:10,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:10,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:22:10,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:10,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 11:22:10,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:10,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:22:10,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:22:10,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:22:10,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:10,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:22:10,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:10,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:10,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:10,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 11:22:10,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:10,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-12 11:22:10,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:10,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:22:10,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:22:10,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 11:22:10,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:10,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 11:22:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:10,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:10,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:10,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 11:22:10,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:10,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 11:22:10,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:10,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:22:10,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-12 11:22:10,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:22:10,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:10,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-12 11:22:10,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:10,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:10,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:10,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-12 11:22:10,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:10,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 11:22:10,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:10,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:22:10,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-12 11:22:10,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:22:10,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:10,981 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 123 proven. 68 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-12 11:22:10,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362892177] [2020-10-12 11:22:10,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:22:10,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:22:10,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978054754] [2020-10-12 11:22:10,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:22:10,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:22:10,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:22:10,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:22:10,983 INFO L87 Difference]: Start difference. First operand 108555 states and 148170 transitions. Second operand 8 states. [2020-10-12 11:22:11,112 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:22:11,931 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 11:22:14,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:22:14,923 INFO L93 Difference]: Finished difference Result 202095 states and 280124 transitions. [2020-10-12 11:22:14,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 11:22:14,924 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 295 [2020-10-12 11:22:14,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:22:15,397 INFO L225 Difference]: With dead ends: 202095 [2020-10-12 11:22:15,398 INFO L226 Difference]: Without dead ends: 125372 [2020-10-12 11:22:15,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-12 11:22:15,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125372 states. [2020-10-12 11:22:21,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125372 to 125169. [2020-10-12 11:22:21,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125169 states. [2020-10-12 11:22:21,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125169 states to 125169 states and 167760 transitions. [2020-10-12 11:22:21,645 INFO L78 Accepts]: Start accepts. Automaton has 125169 states and 167760 transitions. Word has length 295 [2020-10-12 11:22:21,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:22:21,645 INFO L479 AbstractCegarLoop]: Abstraction has 125169 states and 167760 transitions. [2020-10-12 11:22:21,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:22:21,645 INFO L276 IsEmpty]: Start isEmpty. Operand 125169 states and 167760 transitions. [2020-10-12 11:22:21,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-12 11:22:21,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:22:21,782 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 11:22:21,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 11:22:21,783 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:22:21,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:22:21,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1554572087, now seen corresponding path program 1 times [2020-10-12 11:22:21,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:22:21,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512641432] [2020-10-12 11:22:21,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:22:21,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:21,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:22,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:22,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:26,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:26,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:26,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-12 11:22:26,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:22:26,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4600 [2020-10-12 11:22:26,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:26,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:22:26,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:22:26,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-12 11:22:26,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:26,611 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:22:26,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:22:26,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:26,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:26,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:26,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:22:26,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:26,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:22:26,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:26,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:22:26,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:22:26,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:22:26,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:26,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:22:26,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:26,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:26,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:26,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 11:22:26,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:26,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-12 11:22:26,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:26,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:22:26,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:22:26,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 11:22:26,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:26,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 11:22:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:26,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:26,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:26,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 11:22:26,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:26,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-12 11:22:26,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:26,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:22:26,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:22:26,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 11:22:26,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:27,068 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 125 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 11:22:27,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1512641432] [2020-10-12 11:22:27,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:22:27,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:22:27,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343993603] [2020-10-12 11:22:27,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:22:27,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:22:27,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:22:27,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:22:27,070 INFO L87 Difference]: Start difference. First operand 125169 states and 167760 transitions. Second operand 8 states. [2020-10-12 11:22:27,214 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:22:28,683 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:22:31,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:22:31,786 INFO L93 Difference]: Finished difference Result 293730 states and 402198 transitions. [2020-10-12 11:22:31,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 11:22:31,786 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 303 [2020-10-12 11:22:31,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:22:32,365 INFO L225 Difference]: With dead ends: 293730 [2020-10-12 11:22:32,365 INFO L226 Difference]: Without dead ends: 182338 [2020-10-12 11:22:32,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-12 11:22:32,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182338 states. [2020-10-12 11:22:35,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182338 to 181351. [2020-10-12 11:22:35,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181351 states. [2020-10-12 11:22:36,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181351 states to 181351 states and 247294 transitions. [2020-10-12 11:22:36,381 INFO L78 Accepts]: Start accepts. Automaton has 181351 states and 247294 transitions. Word has length 303 [2020-10-12 11:22:36,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:22:36,381 INFO L479 AbstractCegarLoop]: Abstraction has 181351 states and 247294 transitions. [2020-10-12 11:22:36,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:22:36,381 INFO L276 IsEmpty]: Start isEmpty. Operand 181351 states and 247294 transitions. [2020-10-12 11:22:36,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-12 11:22:36,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:22:36,536 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 11:22:36,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 11:22:36,536 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:22:36,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:22:36,537 INFO L82 PathProgramCache]: Analyzing trace with hash -380606084, now seen corresponding path program 1 times [2020-10-12 11:22:36,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:22:36,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951569111] [2020-10-12 11:22:36,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:22:36,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:36,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:36,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:36,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:40,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:41,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:41,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:41,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-12 11:22:41,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:22:41,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 11:22:41,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:41,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:22:41,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:22:41,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-12 11:22:41,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:41,761 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:22:41,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:22:41,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:41,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:41,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:41,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:22:41,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:41,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 11:22:41,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:41,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:22:41,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:22:41,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:22:41,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:41,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:22:41,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:41,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:42,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:42,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 11:22:42,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:42,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-12 11:22:42,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:42,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:22:42,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:22:42,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 11:22:42,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:42,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 11:22:42,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:42,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:42,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:42,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 11:22:42,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:42,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 11:22:42,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:42,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:22:42,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:22:42,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 11:22:42,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:42,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 11:22:42,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:42,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:42,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:22:42,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 11:22:42,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:22:42,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 11:22:42,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:22:42,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:22:42,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 11:22:42,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:22:42,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:22:43,034 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 127 proven. 23 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 11:22:43,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951569111] [2020-10-12 11:22:43,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:22:43,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:22:43,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500437660] [2020-10-12 11:22:43,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:22:43,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:22:43,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:22:43,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:22:43,035 INFO L87 Difference]: Start difference. First operand 181351 states and 247294 transitions. Second operand 7 states. [2020-10-12 11:22:43,174 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-12 11:22:44,313 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 11:22:51,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:22:51,533 INFO L93 Difference]: Finished difference Result 371637 states and 510683 transitions. [2020-10-12 11:22:51,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 11:22:51,534 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 306 [2020-10-12 11:22:51,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:22:52,204 INFO L225 Difference]: With dead ends: 371637 [2020-10-12 11:22:52,204 INFO L226 Difference]: Without dead ends: 209651 [2020-10-12 11:22:52,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-12 11:22:52,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209651 states. [2020-10-12 11:22:56,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209651 to 209311. [2020-10-12 11:22:56,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209311 states. [2020-10-12 11:22:56,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209311 states to 209311 states and 280480 transitions. [2020-10-12 11:22:56,907 INFO L78 Accepts]: Start accepts. Automaton has 209311 states and 280480 transitions. Word has length 306 [2020-10-12 11:22:56,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:22:56,908 INFO L479 AbstractCegarLoop]: Abstraction has 209311 states and 280480 transitions. [2020-10-12 11:22:56,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:22:56,908 INFO L276 IsEmpty]: Start isEmpty. Operand 209311 states and 280480 transitions. [2020-10-12 11:22:57,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-12 11:22:57,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:22:57,058 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 11:22:57,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 11:22:57,059 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:22:57,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:22:57,059 INFO L82 PathProgramCache]: Analyzing trace with hash 537145128, now seen corresponding path program 1 times [2020-10-12 11:22:57,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:22:57,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555578370] [2020-10-12 11:22:57,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:22:57,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:22:57,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:57,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:22:58,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:23:02,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:23:02,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-12 11:23:02,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:23:02,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5479 [2020-10-12 11:23:02,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:23:02,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:23:02,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 115 [2020-10-12 11:23:02,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 208 [2020-10-12 11:23:02,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:23:02,835 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:23:02,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:23:02,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:23:02,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:23:02,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:23:02,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:23:02,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:23:02,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:23:02,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:23:02,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:23:02,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:23:02,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:23:02,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:23:02,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:23:02,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:23:02,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:23:02,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:23:02,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:23:02,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:23:02,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 11:23:02,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:23:02,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:23:02,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:23:02,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:23:02,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:23:02,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:23:02,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:23:02,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:23:03,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:23:03,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-12 11:23:03,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:23:03,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-12 11:23:03,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:23:03,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:23:03,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:23:03,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 11:23:03,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:23:03,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-12 11:23:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:23:03,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:23:03,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:23:03,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-12 11:23:03,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:23:03,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-12 11:23:03,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:23:03,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:23:03,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:23:03,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 11:23:03,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:23:03,562 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 148 proven. 32 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-12 11:23:03,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555578370] [2020-10-12 11:23:03,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:23:03,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:23:03,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936601856] [2020-10-12 11:23:03,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 11:23:03,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:23:03,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 11:23:03,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:23:03,565 INFO L87 Difference]: Start difference. First operand 209311 states and 280480 transitions. Second operand 6 states. [2020-10-12 11:23:03,893 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:23:10,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:23:10,618 INFO L93 Difference]: Finished difference Result 439567 states and 630890 transitions. [2020-10-12 11:23:10,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 11:23:10,619 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 310 [2020-10-12 11:23:10,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:23:11,610 INFO L225 Difference]: With dead ends: 439567 [2020-10-12 11:23:11,610 INFO L226 Difference]: Without dead ends: 248778 [2020-10-12 11:23:11,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:23:12,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248778 states.