/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 19:17:43,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 19:17:43,263 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 19:17:43,289 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 19:17:43,289 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 19:17:43,292 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 19:17:43,294 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 19:17:43,298 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 19:17:43,302 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 19:17:43,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 19:17:43,304 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 19:17:43,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 19:17:43,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 19:17:43,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 19:17:43,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 19:17:43,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 19:17:43,316 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 19:17:43,317 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 19:17:43,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 19:17:43,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 19:17:43,327 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 19:17:43,328 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 19:17:43,329 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 19:17:43,332 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 19:17:43,335 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 19:17:43,335 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 19:17:43,336 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 19:17:43,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 19:17:43,340 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 19:17:43,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 19:17:43,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 19:17:43,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 19:17:43,352 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 19:17:43,353 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 19:17:43,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 19:17:43,354 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 19:17:43,358 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 19:17:43,358 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 19:17:43,358 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 19:17:43,359 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 19:17:43,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 19:17:43,362 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 19:17:43,399 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 19:17:43,400 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 19:17:43,401 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 19:17:43,402 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 19:17:43,402 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 19:17:43,402 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 19:17:43,402 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 19:17:43,402 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 19:17:43,403 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 19:17:43,403 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 19:17:43,404 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 19:17:43,405 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 19:17:43,405 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 19:17:43,405 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 19:17:43,405 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 19:17:43,406 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 19:17:43,406 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 19:17:43,406 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 19:17:43,406 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 19:17:43,406 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 19:17:43,407 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 19:17:43,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:17:43,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 19:17:43,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 19:17:43,407 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 19:17:43,408 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 19:17:43,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 19:17:43,408 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 19:17:43,408 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 19:17:43,409 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 19:17:43,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 19:17:43,726 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 19:17:43,730 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 19:17:43,731 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 19:17:43,732 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 19:17:43,732 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label55.c [2020-10-14 19:17:43,806 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63fc49648/70385aec03634e99b4f6536a86e859fc/FLAGea58fbe3e [2020-10-14 19:17:44,478 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 19:17:44,478 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label55.c [2020-10-14 19:17:44,495 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63fc49648/70385aec03634e99b4f6536a86e859fc/FLAGea58fbe3e [2020-10-14 19:17:44,652 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63fc49648/70385aec03634e99b4f6536a86e859fc [2020-10-14 19:17:44,662 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 19:17:44,664 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 19:17:44,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 19:17:44,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 19:17:44,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 19:17:44,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:17:44" (1/1) ... [2020-10-14 19:17:44,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50ed117b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:17:44, skipping insertion in model container [2020-10-14 19:17:44,677 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:17:44" (1/1) ... [2020-10-14 19:17:44,685 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 19:17:44,771 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 19:17:45,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:17:45,510 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 19:17:45,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:17:45,755 INFO L208 MainTranslator]: Completed translation [2020-10-14 19:17:45,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:17:45 WrapperNode [2020-10-14 19:17:45,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 19:17:45,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 19:17:45,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 19:17:45,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 19:17:45,772 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:17:45" (1/1) ... [2020-10-14 19:17:45,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:17:45" (1/1) ... [2020-10-14 19:17:45,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:17:45" (1/1) ... [2020-10-14 19:17:45,800 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:17:45" (1/1) ... [2020-10-14 19:17:45,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:17:45" (1/1) ... [2020-10-14 19:17:45,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:17:45" (1/1) ... [2020-10-14 19:17:45,913 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:17:45" (1/1) ... [2020-10-14 19:17:45,929 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 19:17:45,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 19:17:45,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 19:17:45,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 19:17:45,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:17:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:17:46,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 19:17:46,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 19:17:46,004 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 19:17:46,004 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 19:17:46,004 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 19:17:46,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 19:17:46,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 19:17:46,005 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 19:17:46,005 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 19:17:46,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 19:17:46,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 19:17:47,932 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 19:17:47,932 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 19:17:47,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:17:47 BoogieIcfgContainer [2020-10-14 19:17:47,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 19:17:47,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 19:17:47,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 19:17:47,952 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 19:17:47,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:17:44" (1/3) ... [2020-10-14 19:17:47,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50286d0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:17:47, skipping insertion in model container [2020-10-14 19:17:47,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:17:45" (2/3) ... [2020-10-14 19:17:47,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50286d0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:17:47, skipping insertion in model container [2020-10-14 19:17:47,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:17:47" (3/3) ... [2020-10-14 19:17:47,956 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label55.c [2020-10-14 19:17:47,967 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 19:17:47,980 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 19:17:47,994 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 19:17:48,026 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 19:17:48,027 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 19:17:48,027 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 19:17:48,027 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 19:17:48,027 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 19:17:48,027 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 19:17:48,027 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 19:17:48,028 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 19:17:48,060 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-14 19:17:48,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-14 19:17:48,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:17:48,077 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] [2020-10-14 19:17:48,078 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:17:48,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:17:48,084 INFO L82 PathProgramCache]: Analyzing trace with hash -137878483, now seen corresponding path program 1 times [2020-10-14 19:17:48,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:17:48,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933879474] [2020-10-14 19:17:48,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:17:48,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:48,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:49,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:53,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:53,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 19:17:53,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:17:53,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4751 [2020-10-14 19:17:53,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:53,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:53,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:17:53,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:17:53,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-14 19:17:53,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 19:17:53,655 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:17:53,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:17:53,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:53,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:53,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:53,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:17:53,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:53,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 19:17:53,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:53,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:53,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:17:53,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:17:53,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:17:53,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:17:53,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:17:53,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933879474] [2020-10-14 19:17:53,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:17:53,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 19:17:53,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025601696] [2020-10-14 19:17:53,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 19:17:53,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:17:53,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 19:17:53,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 19:17:53,795 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 4 states. [2020-10-14 19:17:53,970 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-14 19:17:56,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:17:56,504 INFO L93 Difference]: Finished difference Result 864 states and 1518 transitions. [2020-10-14 19:17:56,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:17:56,507 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 168 [2020-10-14 19:17:56,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:17:56,528 INFO L225 Difference]: With dead ends: 864 [2020-10-14 19:17:56,528 INFO L226 Difference]: Without dead ends: 476 [2020-10-14 19:17:56,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:17:56,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2020-10-14 19:17:56,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 467. [2020-10-14 19:17:56,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2020-10-14 19:17:56,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 721 transitions. [2020-10-14 19:17:56,626 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 721 transitions. Word has length 168 [2020-10-14 19:17:56,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:17:56,627 INFO L479 AbstractCegarLoop]: Abstraction has 467 states and 721 transitions. [2020-10-14 19:17:56,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 19:17:56,628 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 721 transitions. [2020-10-14 19:17:56,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-14 19:17:56,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:17:56,635 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:17:56,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 19:17:56,635 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:17:56,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:17:56,636 INFO L82 PathProgramCache]: Analyzing trace with hash -230913210, now seen corresponding path program 1 times [2020-10-14 19:17:56,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:17:56,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216349944] [2020-10-14 19:17:56,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:17:56,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:56,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:56,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:56,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:57,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:57,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:59,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:59,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-14 19:17:59,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:17:59,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2626 [2020-10-14 19:17:59,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:59,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:59,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:17:59,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 19:17:59,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-14 19:17:59,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:17:59,624 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:17:59,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:17:59,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:59,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:59,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:59,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:17:59,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:17:59,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 19:17:59,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:59,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:59,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:17:59,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:17:59,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:17:59,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:17:59,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:17:59,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:17:59,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:59,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:17:59,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:17:59,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:17:59,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:17:59,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 19:17:59,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:17:59,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:17:59,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:17:59,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:17:59,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 19:17:59,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:17:59,901 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:17:59,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216349944] [2020-10-14 19:17:59,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:17:59,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:17:59,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229296330] [2020-10-14 19:17:59,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:17:59,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:17:59,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:17:59,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:17:59,910 INFO L87 Difference]: Start difference. First operand 467 states and 721 transitions. Second operand 5 states. [2020-10-14 19:18:00,181 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:18:02,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:18:02,762 INFO L93 Difference]: Finished difference Result 1352 states and 2107 transitions. [2020-10-14 19:18:02,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:18:02,763 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-10-14 19:18:02,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:18:02,770 INFO L225 Difference]: With dead ends: 1352 [2020-10-14 19:18:02,770 INFO L226 Difference]: Without dead ends: 470 [2020-10-14 19:18:02,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:18:02,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2020-10-14 19:18:02,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 466. [2020-10-14 19:18:02,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-10-14 19:18:02,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 719 transitions. [2020-10-14 19:18:02,818 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 719 transitions. Word has length 178 [2020-10-14 19:18:02,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:18:02,818 INFO L479 AbstractCegarLoop]: Abstraction has 466 states and 719 transitions. [2020-10-14 19:18:02,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:18:02,819 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 719 transitions. [2020-10-14 19:18:02,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-14 19:18:02,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:18:02,825 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:18:02,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 19:18:02,826 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:18:02,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:18:02,826 INFO L82 PathProgramCache]: Analyzing trace with hash -224644811, now seen corresponding path program 1 times [2020-10-14 19:18:02,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:18:02,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120647920] [2020-10-14 19:18:02,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:18:02,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:03,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:03,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:05,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:05,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-14 19:18:05,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:18:05,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2854 [2020-10-14 19:18:05,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:05,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:05,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:18:05,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 19:18:05,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-14 19:18:05,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:18:06,009 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:18:06,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:18:06,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:06,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:06,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:06,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:18:06,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:18:06,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:18:06,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:06,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:06,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:18:06,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:18:06,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:18:06,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:18:06,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:18:06,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:06,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:06,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:06,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 19:18:06,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:18:06,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 19:18:06,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:06,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:06,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:18:06,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:18:06,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 19:18:06,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:18:06,215 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:18:06,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120647920] [2020-10-14 19:18:06,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:18:06,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:18:06,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999585963] [2020-10-14 19:18:06,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:18:06,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:18:06,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:18:06,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:18:06,218 INFO L87 Difference]: Start difference. First operand 466 states and 719 transitions. Second operand 5 states. [2020-10-14 19:18:06,468 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-14 19:18:08,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:18:08,924 INFO L93 Difference]: Finished difference Result 1360 states and 2126 transitions. [2020-10-14 19:18:08,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:18:08,926 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-10-14 19:18:08,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:18:08,934 INFO L225 Difference]: With dead ends: 1360 [2020-10-14 19:18:08,934 INFO L226 Difference]: Without dead ends: 900 [2020-10-14 19:18:08,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:18:08,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2020-10-14 19:18:08,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 894. [2020-10-14 19:18:09,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 894 states. [2020-10-14 19:18:09,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1299 transitions. [2020-10-14 19:18:09,006 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1299 transitions. Word has length 182 [2020-10-14 19:18:09,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:18:09,008 INFO L479 AbstractCegarLoop]: Abstraction has 894 states and 1299 transitions. [2020-10-14 19:18:09,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:18:09,008 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1299 transitions. [2020-10-14 19:18:09,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-14 19:18:09,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:18:09,012 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 19:18:09,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 19:18:09,013 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:18:09,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:18:09,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1813668049, now seen corresponding path program 1 times [2020-10-14 19:18:09,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:18:09,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835972649] [2020-10-14 19:18:09,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:18:09,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:09,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:09,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:09,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 19:18:09,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:18:09,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 676 [2020-10-14 19:18:09,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:09,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:09,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:18:09,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:18:09,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 19:18:09,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:18:09,944 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:18:09,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:18:09,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:09,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:09,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:09,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:18:09,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:18:09,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 19:18:09,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:09,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:09,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:18:09,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:18:09,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:18:09,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:18:10,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:18:10,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:10,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:10,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:10,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 19:18:10,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:18:10,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 19:18:10,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:10,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:10,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:18:10,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:18:10,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 19:18:10,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:18:10,181 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:18:10,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835972649] [2020-10-14 19:18:10,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:18:10,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 19:18:10,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622989764] [2020-10-14 19:18:10,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:18:10,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:18:10,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:18:10,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:18:10,188 INFO L87 Difference]: Start difference. First operand 894 states and 1299 transitions. Second operand 8 states. [2020-10-14 19:18:10,327 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:18:10,675 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:18:11,111 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:18:14,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:18:14,583 INFO L93 Difference]: Finished difference Result 3321 states and 4973 transitions. [2020-10-14 19:18:14,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 19:18:14,584 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 184 [2020-10-14 19:18:14,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:18:14,600 INFO L225 Difference]: With dead ends: 3321 [2020-10-14 19:18:14,600 INFO L226 Difference]: Without dead ends: 2433 [2020-10-14 19:18:14,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-14 19:18:14,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2433 states. [2020-10-14 19:18:14,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2433 to 2408. [2020-10-14 19:18:14,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2408 states. [2020-10-14 19:18:14,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2408 states to 2408 states and 3444 transitions. [2020-10-14 19:18:14,718 INFO L78 Accepts]: Start accepts. Automaton has 2408 states and 3444 transitions. Word has length 184 [2020-10-14 19:18:14,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:18:14,719 INFO L479 AbstractCegarLoop]: Abstraction has 2408 states and 3444 transitions. [2020-10-14 19:18:14,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:18:14,719 INFO L276 IsEmpty]: Start isEmpty. Operand 2408 states and 3444 transitions. [2020-10-14 19:18:14,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-14 19:18:14,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:18:14,728 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 19:18:14,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 19:18:14,728 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:18:14,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:18:14,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1810360838, now seen corresponding path program 1 times [2020-10-14 19:18:14,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:18:14,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [30227381] [2020-10-14 19:18:14,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:18:14,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:14,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:15,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:16,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:16,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-14 19:18:16,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:18:16,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1685 [2020-10-14 19:18:16,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:16,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:16,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:18:16,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 19:18:16,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-14 19:18:16,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:18:16,720 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:18:16,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:18:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:16,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:16,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:16,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:18:16,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:18:16,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:18:16,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:16,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:16,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:18:16,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:18:16,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:18:16,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:18:16,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:18:16,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:16,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:16,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:16,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 19:18:16,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:18:16,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 19:18:16,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:16,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:16,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:18:16,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:18:16,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 19:18:16,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:18:16,955 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:18:16,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [30227381] [2020-10-14 19:18:16,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:18:16,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:18:16,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841276189] [2020-10-14 19:18:16,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:18:16,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:18:16,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:18:16,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:18:16,958 INFO L87 Difference]: Start difference. First operand 2408 states and 3444 transitions. Second operand 5 states. [2020-10-14 19:18:17,226 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:18:20,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:18:20,035 INFO L93 Difference]: Finished difference Result 7185 states and 10503 transitions. [2020-10-14 19:18:20,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:18:20,036 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-14 19:18:20,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:18:20,064 INFO L225 Difference]: With dead ends: 7185 [2020-10-14 19:18:20,064 INFO L226 Difference]: Without dead ends: 4783 [2020-10-14 19:18:20,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:18:20,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4783 states. [2020-10-14 19:18:20,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4783 to 4747. [2020-10-14 19:18:20,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4747 states. [2020-10-14 19:18:20,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4747 states to 4747 states and 6882 transitions. [2020-10-14 19:18:20,208 INFO L78 Accepts]: Start accepts. Automaton has 4747 states and 6882 transitions. Word has length 185 [2020-10-14 19:18:20,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:18:20,208 INFO L479 AbstractCegarLoop]: Abstraction has 4747 states and 6882 transitions. [2020-10-14 19:18:20,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:18:20,209 INFO L276 IsEmpty]: Start isEmpty. Operand 4747 states and 6882 transitions. [2020-10-14 19:18:20,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-14 19:18:20,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:18:20,222 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 19:18:20,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 19:18:20,222 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:18:20,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:18:20,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1555240662, now seen corresponding path program 1 times [2020-10-14 19:18:20,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:18:20,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722185200] [2020-10-14 19:18:20,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:18:20,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:20,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:20,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:21,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:22,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:22,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-14 19:18:22,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:18:22,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2057 [2020-10-14 19:18:22,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:22,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:22,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:18:22,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 19:18:22,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-14 19:18:22,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:18:22,512 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:18:22,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:18:22,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:22,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:22,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:22,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:18:22,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:18:22,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:18:22,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:22,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:22,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:18:22,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:18:22,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:18:22,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:18:22,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:18:22,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:22,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:22,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:22,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 19:18:22,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:18:22,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 19:18:22,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:22,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:22,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:18:22,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:18:22,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 19:18:22,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:18:22,739 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:18:22,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722185200] [2020-10-14 19:18:22,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:18:22,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:18:22,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936760865] [2020-10-14 19:18:22,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:18:22,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:18:22,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:18:22,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:18:22,741 INFO L87 Difference]: Start difference. First operand 4747 states and 6882 transitions. Second operand 5 states. [2020-10-14 19:18:25,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:18:25,375 INFO L93 Difference]: Finished difference Result 7791 states and 11407 transitions. [2020-10-14 19:18:25,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:18:25,376 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 187 [2020-10-14 19:18:25,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:18:25,390 INFO L225 Difference]: With dead ends: 7791 [2020-10-14 19:18:25,391 INFO L226 Difference]: Without dead ends: 3050 [2020-10-14 19:18:25,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:18:25,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3050 states. [2020-10-14 19:18:25,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3050 to 3045. [2020-10-14 19:18:25,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3045 states. [2020-10-14 19:18:25,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3045 states to 3045 states and 4109 transitions. [2020-10-14 19:18:25,500 INFO L78 Accepts]: Start accepts. Automaton has 3045 states and 4109 transitions. Word has length 187 [2020-10-14 19:18:25,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:18:25,500 INFO L479 AbstractCegarLoop]: Abstraction has 3045 states and 4109 transitions. [2020-10-14 19:18:25,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:18:25,501 INFO L276 IsEmpty]: Start isEmpty. Operand 3045 states and 4109 transitions. [2020-10-14 19:18:25,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-14 19:18:25,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:18:25,511 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 19:18:25,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 19:18:25,511 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:18:25,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:18:25,512 INFO L82 PathProgramCache]: Analyzing trace with hash -295755894, now seen corresponding path program 1 times [2020-10-14 19:18:25,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:18:25,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [49063093] [2020-10-14 19:18:25,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:18:25,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:25,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:25,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:27,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:27,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:30,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:30,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-14 19:18:30,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:18:30,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4921 [2020-10-14 19:18:30,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:30,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:30,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:18:30,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 19:18:30,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-14 19:18:30,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:18:30,707 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:18:30,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:18:30,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:30,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:30,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:30,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:18:30,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:18:30,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:18:30,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:30,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:30,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:18:30,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:18:30,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:18:30,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:18:30,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:18:30,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:30,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:30,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:30,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 19:18:30,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:18:30,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:18:30,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:30,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:30,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:18:30,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:18:30,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:18:30,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:18:30,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 19:18:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:30,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:30,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:30,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:18:30,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:18:30,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 19:18:30,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:30,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:30,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:18:30,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:18:30,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 19:18:30,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:18:30,901 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 19:18:30,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [49063093] [2020-10-14 19:18:30,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:18:30,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:18:30,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393911296] [2020-10-14 19:18:30,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:18:30,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:18:30,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:18:30,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:18:30,904 INFO L87 Difference]: Start difference. First operand 3045 states and 4109 transitions. Second operand 5 states. [2020-10-14 19:18:31,116 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:18:33,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:18:33,726 INFO L93 Difference]: Finished difference Result 9031 states and 12415 transitions. [2020-10-14 19:18:33,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:18:33,732 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 195 [2020-10-14 19:18:33,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:18:33,760 INFO L225 Difference]: With dead ends: 9031 [2020-10-14 19:18:33,760 INFO L226 Difference]: Without dead ends: 5992 [2020-10-14 19:18:33,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:18:33,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5992 states. [2020-10-14 19:18:33,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5992 to 5985. [2020-10-14 19:18:33,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5985 states. [2020-10-14 19:18:33,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5985 states to 5985 states and 8059 transitions. [2020-10-14 19:18:33,938 INFO L78 Accepts]: Start accepts. Automaton has 5985 states and 8059 transitions. Word has length 195 [2020-10-14 19:18:33,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:18:33,938 INFO L479 AbstractCegarLoop]: Abstraction has 5985 states and 8059 transitions. [2020-10-14 19:18:33,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:18:33,939 INFO L276 IsEmpty]: Start isEmpty. Operand 5985 states and 8059 transitions. [2020-10-14 19:18:33,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-14 19:18:33,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:18:33,953 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:18:33,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 19:18:33,954 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:18:33,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:18:33,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1761152573, now seen corresponding path program 1 times [2020-10-14 19:18:33,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:18:33,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460636442] [2020-10-14 19:18:33,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:18:34,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:34,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:34,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:35,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:35,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:37,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:37,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-14 19:18:37,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:18:37,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3614 [2020-10-14 19:18:37,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:37,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:37,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:18:37,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 19:18:37,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-14 19:18:37,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 44 [2020-10-14 19:18:37,852 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:18:37,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:18:37,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:37,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:37,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:37,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:18:37,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:18:37,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:18:37,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:37,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:37,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:18:37,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:18:37,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:18:37,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:18:37,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:18:37,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:37,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:37,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:37,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:18:37,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:18:37,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 19:18:37,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:37,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:37,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:18:37,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:18:37,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 19:18:37,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:18:37,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:18:37,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:37,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:38,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:38,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 19:18:38,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:18:38,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 19:18:38,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:38,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:38,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:18:38,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:18:38,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 19:18:38,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:18:38,083 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 19:18:38,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460636442] [2020-10-14 19:18:38,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:18:38,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:18:38,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800295901] [2020-10-14 19:18:38,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:18:38,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:18:38,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:18:38,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:18:38,086 INFO L87 Difference]: Start difference. First operand 5985 states and 8059 transitions. Second operand 7 states. [2020-10-14 19:18:38,344 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:18:38,495 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:18:42,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:18:42,755 INFO L93 Difference]: Finished difference Result 13789 states and 19515 transitions. [2020-10-14 19:18:42,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 19:18:42,756 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 196 [2020-10-14 19:18:42,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:18:42,808 INFO L225 Difference]: With dead ends: 13789 [2020-10-14 19:18:42,808 INFO L226 Difference]: Without dead ends: 7810 [2020-10-14 19:18:42,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-14 19:18:42,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7810 states. [2020-10-14 19:18:43,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7810 to 7715. [2020-10-14 19:18:43,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7715 states. [2020-10-14 19:18:43,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7715 states to 7715 states and 10054 transitions. [2020-10-14 19:18:43,086 INFO L78 Accepts]: Start accepts. Automaton has 7715 states and 10054 transitions. Word has length 196 [2020-10-14 19:18:43,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:18:43,087 INFO L479 AbstractCegarLoop]: Abstraction has 7715 states and 10054 transitions. [2020-10-14 19:18:43,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:18:43,087 INFO L276 IsEmpty]: Start isEmpty. Operand 7715 states and 10054 transitions. [2020-10-14 19:18:43,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-14 19:18:43,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:18:43,106 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:18:43,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 19:18:43,107 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:18:43,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:18:43,107 INFO L82 PathProgramCache]: Analyzing trace with hash 51006443, now seen corresponding path program 1 times [2020-10-14 19:18:43,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:18:43,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924522751] [2020-10-14 19:18:43,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:18:43,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:43,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:43,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:44,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:47,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:47,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-14 19:18:47,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:18:47,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3924 [2020-10-14 19:18:47,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:47,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:47,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:18:47,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-14 19:18:47,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-14 19:18:47,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:18:47,248 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:18:47,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:18:47,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:47,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:47,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:47,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:18:47,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:18:47,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:18:47,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:47,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:47,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:18:47,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:18:47,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:18:47,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:18:47,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:18:47,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:47,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:47,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:47,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 19:18:47,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:18:47,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:18:47,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:47,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:47,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:18:47,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:18:47,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:18:47,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:18:47,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 19:18:47,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:47,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:47,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:47,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 19:18:47,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:18:47,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 19:18:47,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:47,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:47,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:18:47,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:18:47,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 19:18:47,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:18:47,541 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 19:18:47,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924522751] [2020-10-14 19:18:47,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:18:47,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:18:47,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124060824] [2020-10-14 19:18:47,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:18:47,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:18:47,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:18:47,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:18:47,544 INFO L87 Difference]: Start difference. First operand 7715 states and 10054 transitions. Second operand 5 states. [2020-10-14 19:18:47,695 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:18:50,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:18:50,274 INFO L93 Difference]: Finished difference Result 20932 states and 27752 transitions. [2020-10-14 19:18:50,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:18:50,279 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 223 [2020-10-14 19:18:50,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:18:50,327 INFO L225 Difference]: With dead ends: 20932 [2020-10-14 19:18:50,327 INFO L226 Difference]: Without dead ends: 13223 [2020-10-14 19:18:50,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:18:50,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13223 states. [2020-10-14 19:18:50,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13223 to 13179. [2020-10-14 19:18:50,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13179 states. [2020-10-14 19:18:50,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13179 states to 13179 states and 17538 transitions. [2020-10-14 19:18:50,777 INFO L78 Accepts]: Start accepts. Automaton has 13179 states and 17538 transitions. Word has length 223 [2020-10-14 19:18:50,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:18:50,778 INFO L479 AbstractCegarLoop]: Abstraction has 13179 states and 17538 transitions. [2020-10-14 19:18:50,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:18:50,778 INFO L276 IsEmpty]: Start isEmpty. Operand 13179 states and 17538 transitions. [2020-10-14 19:18:50,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-14 19:18:50,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:18:50,814 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:18:50,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 19:18:50,815 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:18:50,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:18:50,815 INFO L82 PathProgramCache]: Analyzing trace with hash 2132237313, now seen corresponding path program 1 times [2020-10-14 19:18:50,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:18:50,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879370632] [2020-10-14 19:18:50,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:18:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:50,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:50,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:51,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:51,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:55,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:55,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:55,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 19:18:55,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:18:55,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 19:18:55,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:55,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:55,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 19:18:55,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:18:55,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 19:18:55,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:18:56,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:18:56,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:56,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:56,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:56,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:18:56,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:18:56,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:18:56,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:56,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:56,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:18:56,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:18:56,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:18:56,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:18:56,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:18:56,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:56,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:56,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:56,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 19:18:56,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:18:56,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 19:18:56,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:56,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:56,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:18:56,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:18:56,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 19:18:56,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:18:56,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 19:18:56,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:56,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:56,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:56,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 19:18:56,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:18:56,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 19:18:56,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:56,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:56,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:18:56,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:18:56,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 19:18:56,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:18:56,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 19:18:56,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:18:56,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:18:56,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:18:56,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 19:18:56,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:18:56,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 19:18:56,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:18:56,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:18:56,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:18:56,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:18:56,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 19:18:56,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:18:56,453 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 55 proven. 36 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 19:18:56,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879370632] [2020-10-14 19:18:56,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:18:56,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:18:56,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052185838] [2020-10-14 19:18:56,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 19:18:56,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:18:56,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 19:18:56,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-14 19:18:56,455 INFO L87 Difference]: Start difference. First operand 13179 states and 17538 transitions. Second operand 9 states. [2020-10-14 19:18:56,597 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:18:58,434 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 19:18:59,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:18:59,874 INFO L93 Difference]: Finished difference Result 38377 states and 53372 transitions. [2020-10-14 19:18:59,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 19:18:59,875 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 230 [2020-10-14 19:18:59,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:18:59,989 INFO L225 Difference]: With dead ends: 38377 [2020-10-14 19:18:59,989 INFO L226 Difference]: Without dead ends: 25204 [2020-10-14 19:19:00,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-14 19:19:00,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25204 states. [2020-10-14 19:19:01,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25204 to 24058. [2020-10-14 19:19:01,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24058 states. [2020-10-14 19:19:01,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24058 states to 24058 states and 31999 transitions. [2020-10-14 19:19:01,108 INFO L78 Accepts]: Start accepts. Automaton has 24058 states and 31999 transitions. Word has length 230 [2020-10-14 19:19:01,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:19:01,109 INFO L479 AbstractCegarLoop]: Abstraction has 24058 states and 31999 transitions. [2020-10-14 19:19:01,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 19:19:01,109 INFO L276 IsEmpty]: Start isEmpty. Operand 24058 states and 31999 transitions. [2020-10-14 19:19:01,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-14 19:19:01,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:19:01,144 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:19:01,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 19:19:01,145 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:19:01,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:19:01,145 INFO L82 PathProgramCache]: Analyzing trace with hash -324193041, now seen corresponding path program 1 times [2020-10-14 19:19:01,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:19:01,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439193032] [2020-10-14 19:19:01,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:19:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:01,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:01,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:02,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:04,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:06,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:06,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-10-14 19:19:06,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:19:06,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-14 19:19:06,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:06,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:06,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:19:06,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 19:19:06,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 215 [2020-10-14 19:19:06,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:19:06,420 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:19:06,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:19:06,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:06,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:06,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:06,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:19:06,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:19:06,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:19:06,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:06,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:06,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:19:06,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:19:06,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:19:06,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:19:06,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:19:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:06,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:06,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:06,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 19:19:06,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:19:06,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-14 19:19:06,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:06,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:06,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:19:06,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:19:06,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 19:19:06,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:19:06,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 19:19:06,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:06,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:06,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:06,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:06,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 19:19:06,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:19:06,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 19:19:06,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:06,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:06,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:19:06,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:19:06,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 19:19:06,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:19:06,882 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 61 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-14 19:19:06,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439193032] [2020-10-14 19:19:06,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:19:06,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 19:19:06,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868190928] [2020-10-14 19:19:06,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 19:19:06,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:19:06,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 19:19:06,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:19:06,885 INFO L87 Difference]: Start difference. First operand 24058 states and 31999 transitions. Second operand 6 states. [2020-10-14 19:19:07,019 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:19:07,557 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:19:10,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:19:10,383 INFO L93 Difference]: Finished difference Result 66962 states and 91061 transitions. [2020-10-14 19:19:10,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 19:19:10,383 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 237 [2020-10-14 19:19:10,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:19:10,545 INFO L225 Difference]: With dead ends: 66962 [2020-10-14 19:19:10,546 INFO L226 Difference]: Without dead ends: 42910 [2020-10-14 19:19:10,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:19:10,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42910 states. [2020-10-14 19:19:11,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42910 to 42811. [2020-10-14 19:19:11,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42811 states. [2020-10-14 19:19:11,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42811 states to 42811 states and 55599 transitions. [2020-10-14 19:19:11,845 INFO L78 Accepts]: Start accepts. Automaton has 42811 states and 55599 transitions. Word has length 237 [2020-10-14 19:19:11,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:19:11,846 INFO L479 AbstractCegarLoop]: Abstraction has 42811 states and 55599 transitions. [2020-10-14 19:19:11,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 19:19:11,847 INFO L276 IsEmpty]: Start isEmpty. Operand 42811 states and 55599 transitions. [2020-10-14 19:19:11,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-14 19:19:11,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:19:11,900 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:19:11,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 19:19:11,901 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:19:11,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:19:11,901 INFO L82 PathProgramCache]: Analyzing trace with hash 918873735, now seen corresponding path program 1 times [2020-10-14 19:19:11,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:19:11,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902664902] [2020-10-14 19:19:11,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:19:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:11,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:12,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:12,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:13,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:16,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:16,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-14 19:19:16,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:19:16,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4487 [2020-10-14 19:19:16,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:16,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:16,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:19:16,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-14 19:19:16,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-14 19:19:16,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:19:16,670 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:19:16,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:19:16,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:16,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:16,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:16,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:19:16,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:19:16,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:19:16,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:16,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:16,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:19:16,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:19:16,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:19:16,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:19:16,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:19:16,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:16,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:16,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:16,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 19:19:16,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:19:16,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 19:19:16,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:16,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:16,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:19:16,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:19:16,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:19:16,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:19:16,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 19:19:16,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:16,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:16,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:16,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 19:19:16,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:19:16,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 19:19:16,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:16,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:16,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:19:16,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:19:16,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 19:19:16,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:19:17,156 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 85 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-14 19:19:17,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902664902] [2020-10-14 19:19:17,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:19:17,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:19:17,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525192376] [2020-10-14 19:19:17,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:19:17,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:19:17,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:19:17,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:19:17,161 INFO L87 Difference]: Start difference. First operand 42811 states and 55599 transitions. Second operand 5 states. [2020-10-14 19:19:17,377 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:19:20,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:19:20,241 INFO L93 Difference]: Finished difference Result 104825 states and 137856 transitions. [2020-10-14 19:19:20,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:19:20,243 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 258 [2020-10-14 19:19:20,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:19:20,466 INFO L225 Difference]: With dead ends: 104825 [2020-10-14 19:19:20,466 INFO L226 Difference]: Without dead ends: 62020 [2020-10-14 19:19:20,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:19:20,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62020 states. [2020-10-14 19:19:21,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62020 to 53047. [2020-10-14 19:19:21,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53047 states. [2020-10-14 19:19:21,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53047 states to 53047 states and 68471 transitions. [2020-10-14 19:19:21,696 INFO L78 Accepts]: Start accepts. Automaton has 53047 states and 68471 transitions. Word has length 258 [2020-10-14 19:19:21,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:19:21,697 INFO L479 AbstractCegarLoop]: Abstraction has 53047 states and 68471 transitions. [2020-10-14 19:19:21,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:19:21,697 INFO L276 IsEmpty]: Start isEmpty. Operand 53047 states and 68471 transitions. [2020-10-14 19:19:21,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-10-14 19:19:21,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:19:21,753 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:19:21,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 19:19:21,753 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:19:21,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:19:21,753 INFO L82 PathProgramCache]: Analyzing trace with hash -497749562, now seen corresponding path program 1 times [2020-10-14 19:19:21,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:19:21,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159368892] [2020-10-14 19:19:21,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:19:23,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:23,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:23,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:25,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:28,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:28,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 370 [2020-10-14 19:19:28,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:19:28,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-14 19:19:28,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:28,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:28,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:19:28,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:19:28,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-14 19:19:28,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:19:28,523 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:19:28,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:19:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:28,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:28,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:28,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:19:28,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:19:28,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:19:28,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:28,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:28,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:19:28,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:19:28,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:19:28,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:19:28,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:19:28,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:28,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:28,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:28,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 19:19:28,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:19:28,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-14 19:19:28,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:28,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:28,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:19:28,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:19:28,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 19:19:28,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:19:28,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-14 19:19:28,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:28,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:28,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:28,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 19:19:28,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:19:28,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 19:19:28,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:28,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:28,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:19:28,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 19:19:28,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:19:28,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:19:28,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-10-14 19:19:28,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:28,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:28,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:28,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 19:19:28,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:19:28,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:19:28,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:28,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:28,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:19:28,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 19:19:28,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:19:28,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:19:29,089 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 179 proven. 51 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-14 19:19:29,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159368892] [2020-10-14 19:19:29,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:19:29,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:19:29,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193635046] [2020-10-14 19:19:29,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:19:29,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:19:29,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:19:29,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:19:29,091 INFO L87 Difference]: Start difference. First operand 53047 states and 68471 transitions. Second operand 7 states. [2020-10-14 19:19:29,235 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 19:19:30,074 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 19:19:32,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:19:32,499 INFO L93 Difference]: Finished difference Result 121431 states and 157105 transitions. [2020-10-14 19:19:32,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:19:32,499 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 356 [2020-10-14 19:19:32,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:19:32,707 INFO L225 Difference]: With dead ends: 121431 [2020-10-14 19:19:32,708 INFO L226 Difference]: Without dead ends: 68390 [2020-10-14 19:19:32,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:19:32,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68390 states. [2020-10-14 19:19:34,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68390 to 68049. [2020-10-14 19:19:34,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68049 states. [2020-10-14 19:19:34,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68049 states to 68049 states and 82588 transitions. [2020-10-14 19:19:34,231 INFO L78 Accepts]: Start accepts. Automaton has 68049 states and 82588 transitions. Word has length 356 [2020-10-14 19:19:34,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:19:34,231 INFO L479 AbstractCegarLoop]: Abstraction has 68049 states and 82588 transitions. [2020-10-14 19:19:34,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:19:34,232 INFO L276 IsEmpty]: Start isEmpty. Operand 68049 states and 82588 transitions. [2020-10-14 19:19:34,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2020-10-14 19:19:34,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:19:34,329 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 19:19:34,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 19:19:34,330 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:19:34,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:19:34,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1321437609, now seen corresponding path program 1 times [2020-10-14 19:19:34,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:19:34,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094763130] [2020-10-14 19:19:34,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:19:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:34,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:35,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:35,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:36,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:37,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:39,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:39,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 595 [2020-10-14 19:19:39,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:19:39,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-14 19:19:39,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:39,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:39,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 19:19:39,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:19:39,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 404 [2020-10-14 19:19:39,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:19:39,820 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:19:39,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:19:39,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:39,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:39,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:39,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:19:39,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:19:39,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:19:39,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:39,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:39,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:19:39,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:19:39,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:19:39,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:19:39,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:19:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:39,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:40,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:40,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 19:19:40,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:19:40,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-14 19:19:40,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:40,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:40,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:19:40,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:19:40,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 19:19:40,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:19:40,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 19:19:40,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:40,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:40,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:40,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 19:19:40,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:19:40,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-10-14 19:19:40,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:40,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:40,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:19:40,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:19:40,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 19:19:40,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:19:40,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-14 19:19:40,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:40,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:40,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:40,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:40,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 19:19:40,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:19:40,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 19:19:40,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:40,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:40,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:19:40,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:19:40,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 19:19:40,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:19:40,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-10-14 19:19:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:40,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:41,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:41,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 19:19:41,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:19:41,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-14 19:19:41,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:41,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:41,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:19:41,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:19:41,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-14 19:19:41,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:19:41,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-10-14 19:19:41,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:41,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:41,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:41,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 19:19:41,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:19:41,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:19:41,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:41,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:41,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:19:41,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 19:19:41,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:19:41,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:19:41,306 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 407 proven. 50 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2020-10-14 19:19:41,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094763130] [2020-10-14 19:19:41,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:19:41,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:19:41,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013404835] [2020-10-14 19:19:41,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:19:41,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:19:41,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:19:41,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:19:41,308 INFO L87 Difference]: Start difference. First operand 68049 states and 82588 transitions. Second operand 7 states. [2020-10-14 19:19:41,439 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:19:46,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:19:46,205 INFO L93 Difference]: Finished difference Result 172390 states and 216729 transitions. [2020-10-14 19:19:46,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 19:19:46,206 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 577 [2020-10-14 19:19:46,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:19:46,601 INFO L225 Difference]: With dead ends: 172390 [2020-10-14 19:19:46,602 INFO L226 Difference]: Without dead ends: 104347 [2020-10-14 19:19:46,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 19:19:46,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104347 states. [2020-10-14 19:19:48,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104347 to 103007. [2020-10-14 19:19:48,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103007 states. [2020-10-14 19:19:48,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103007 states to 103007 states and 125427 transitions. [2020-10-14 19:19:48,953 INFO L78 Accepts]: Start accepts. Automaton has 103007 states and 125427 transitions. Word has length 577 [2020-10-14 19:19:48,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:19:48,954 INFO L479 AbstractCegarLoop]: Abstraction has 103007 states and 125427 transitions. [2020-10-14 19:19:48,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:19:48,954 INFO L276 IsEmpty]: Start isEmpty. Operand 103007 states and 125427 transitions. [2020-10-14 19:19:49,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2020-10-14 19:19:49,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:19:49,071 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:19:49,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 19:19:49,071 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:19:49,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:19:49,071 INFO L82 PathProgramCache]: Analyzing trace with hash 934881394, now seen corresponding path program 1 times [2020-10-14 19:19:49,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:19:49,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471337369] [2020-10-14 19:19:49,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:19:49,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:49,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:49,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:49,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:50,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:52,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:54,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:54,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 629 [2020-10-14 19:19:54,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:19:54,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-14 19:19:54,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:54,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:54,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 19:19:54,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:19:54,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 438 [2020-10-14 19:19:54,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:19:54,730 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:19:54,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:19:54,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:54,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:55,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:55,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:19:55,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:19:55,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 388 [2020-10-14 19:19:55,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:55,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:55,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:19:55,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:19:55,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:19:55,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:19:55,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:19:55,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:55,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:55,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:55,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 19:19:55,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:19:55,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 19:19:55,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:55,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:55,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:19:55,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:19:55,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 19:19:55,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:19:55,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 19:19:55,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:55,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:55,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:55,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 19:19:55,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:19:55,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 430 [2020-10-14 19:19:55,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:55,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:55,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:19:55,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:19:55,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 19:19:55,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:19:56,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-14 19:19:56,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:56,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:56,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:56,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 19:19:56,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:19:56,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 19:19:56,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:56,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:56,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:19:56,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:19:56,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 19:19:56,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:19:56,628 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-10-14 19:19:56,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-10-14 19:19:56,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:56,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:56,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:56,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 19:19:56,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:19:56,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-14 19:19:56,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:56,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:56,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:19:56,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:19:56,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 19:19:56,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:19:57,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-10-14 19:19:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:57,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:57,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:58,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:58,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 19:19:58,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:19:58,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1124 [2020-10-14 19:19:58,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:58,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:58,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:19:58,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:19:58,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-14 19:19:58,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:19:58,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-10-14 19:19:58,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:19:58,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:19:58,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:19:58,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 19:19:58,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:19:58,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 19:19:58,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:19:58,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:19:58,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:19:58,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 19:19:58,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:19:58,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:20:00,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1048 backedges. 454 proven. 459 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-14 19:20:00,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471337369] [2020-10-14 19:20:00,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:20:00,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 19:20:00,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144280460] [2020-10-14 19:20:00,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 19:20:00,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:20:00,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 19:20:00,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-14 19:20:00,662 INFO L87 Difference]: Start difference. First operand 103007 states and 125427 transitions. Second operand 13 states. [2020-10-14 19:20:00,847 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-14 19:20:01,546 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 63 [2020-10-14 19:20:01,899 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 87 [2020-10-14 19:20:02,362 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 153 [2020-10-14 19:20:03,010 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 70 [2020-10-14 19:20:03,365 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 94 [2020-10-14 19:20:04,178 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-14 19:20:06,221 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 68 [2020-10-14 19:20:07,025 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 19:20:10,858 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2020-10-14 19:20:12,182 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-14 19:20:13,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:20:13,250 INFO L93 Difference]: Finished difference Result 282065 states and 361845 transitions. [2020-10-14 19:20:13,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 19:20:13,251 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 609 [2020-10-14 19:20:13,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:20:13,787 INFO L225 Difference]: With dead ends: 282065 [2020-10-14 19:20:13,788 INFO L226 Difference]: Without dead ends: 171180 [2020-10-14 19:20:13,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=281, Invalid=909, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 19:20:14,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171180 states. [2020-10-14 19:20:17,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171180 to 161098. [2020-10-14 19:20:17,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161098 states. [2020-10-14 19:20:17,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161098 states to 161098 states and 194647 transitions. [2020-10-14 19:20:17,308 INFO L78 Accepts]: Start accepts. Automaton has 161098 states and 194647 transitions. Word has length 609 [2020-10-14 19:20:17,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:20:17,308 INFO L479 AbstractCegarLoop]: Abstraction has 161098 states and 194647 transitions. [2020-10-14 19:20:17,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 19:20:17,308 INFO L276 IsEmpty]: Start isEmpty. Operand 161098 states and 194647 transitions. [2020-10-14 19:20:17,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 624 [2020-10-14 19:20:17,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:20:17,446 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 19:20:17,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 19:20:17,447 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:20:17,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:20:17,447 INFO L82 PathProgramCache]: Analyzing trace with hash -492290043, now seen corresponding path program 1 times [2020-10-14 19:20:17,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:20:17,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402210163] [2020-10-14 19:20:17,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:20:17,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:17,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:17,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:17,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:18,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:21,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:22,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:22,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:22,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 645 [2020-10-14 19:20:22,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 19:20:22,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 19:20:22,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:22,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:22,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:20:22,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 267 [2020-10-14 19:20:22,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-14 19:20:22,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:20:22,845 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:20:22,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:20:22,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:22,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:22,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:22,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:20:22,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:20:22,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:20:22,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:22,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:22,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:20:22,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:20:22,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:20:22,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:20:22,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:20:22,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:22,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:22,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:22,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 19:20:22,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:20:22,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 19:20:22,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:22,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:22,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:20:22,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:20:22,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:20:22,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:20:23,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 19:20:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:23,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:23,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:23,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 19:20:23,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:20:23,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 19:20:23,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:23,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:23,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:20:23,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:20:23,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:20:23,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:20:23,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-14 19:20:23,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:23,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:23,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:23,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 19:20:23,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:20:23,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 19:20:23,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:23,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:23,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:20:23,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:20:23,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 19:20:23,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:20:23,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-10-14 19:20:23,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:23,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:23,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:23,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 19:20:23,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:20:23,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-14 19:20:23,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:23,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:23,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:20:23,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:20:23,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-14 19:20:23,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:20:23,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-10-14 19:20:23,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:23,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:23,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:23,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 19:20:23,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:20:23,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 19:20:23,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:23,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:23,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:20:23,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 19:20:23,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:20:23,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:20:23,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2020-10-14 19:20:23,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:23,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:23,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:23,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 19:20:23,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:20:23,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 19:20:23,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:23,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:23,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:20:23,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 19:20:23,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:20:23,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:20:23,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2020-10-14 19:20:23,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:23,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:23,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:23,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 19:20:23,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:20:23,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 19:20:23,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:23,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:23,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:20:23,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 19:20:23,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:20:23,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:20:24,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1135 backedges. 722 proven. 55 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2020-10-14 19:20:24,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402210163] [2020-10-14 19:20:24,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:20:24,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:20:24,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134976498] [2020-10-14 19:20:24,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:20:24,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:20:24,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:20:24,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:20:24,094 INFO L87 Difference]: Start difference. First operand 161098 states and 194647 transitions. Second operand 7 states. [2020-10-14 19:20:24,242 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:20:26,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:20:26,774 INFO L93 Difference]: Finished difference Result 269124 states and 322301 transitions. [2020-10-14 19:20:26,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 19:20:26,775 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 623 [2020-10-14 19:20:26,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:20:27,008 INFO L225 Difference]: With dead ends: 269124 [2020-10-14 19:20:27,008 INFO L226 Difference]: Without dead ends: 108880 [2020-10-14 19:20:27,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-14 19:20:27,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108880 states. [2020-10-14 19:20:28,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108880 to 108421. [2020-10-14 19:20:28,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108421 states. [2020-10-14 19:20:28,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108421 states to 108421 states and 127182 transitions. [2020-10-14 19:20:28,926 INFO L78 Accepts]: Start accepts. Automaton has 108421 states and 127182 transitions. Word has length 623 [2020-10-14 19:20:28,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:20:28,927 INFO L479 AbstractCegarLoop]: Abstraction has 108421 states and 127182 transitions. [2020-10-14 19:20:28,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:20:28,927 INFO L276 IsEmpty]: Start isEmpty. Operand 108421 states and 127182 transitions. [2020-10-14 19:20:29,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2020-10-14 19:20:29,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:20:29,013 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:20:29,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 19:20:29,013 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:20:29,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:20:29,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1698981405, now seen corresponding path program 1 times [2020-10-14 19:20:29,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:20:29,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097147798] [2020-10-14 19:20:29,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:20:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:29,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:29,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:29,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:29,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:33,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:34,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:34,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:34,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 649 [2020-10-14 19:20:34,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 19:20:34,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5177 [2020-10-14 19:20:34,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:34,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:34,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:20:34,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 267 [2020-10-14 19:20:34,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-14 19:20:34,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:20:34,524 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:20:34,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:20:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:34,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:34,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:34,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:20:34,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:20:34,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:20:34,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:34,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:34,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:20:34,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:20:34,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:20:34,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:20:34,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:20:34,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:34,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:34,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:34,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 19:20:34,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:20:34,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 19:20:34,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:34,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:34,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:20:34,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:20:34,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:20:34,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:20:34,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 19:20:34,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:34,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:34,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:34,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 19:20:34,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:20:34,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 19:20:34,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:34,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:34,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:20:34,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:20:34,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:20:34,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:20:34,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-14 19:20:34,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:34,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:34,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:34,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 19:20:34,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:20:34,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 19:20:34,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:34,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:34,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:20:34,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:20:34,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 19:20:34,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:20:34,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-10-14 19:20:34,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:34,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:34,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:34,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 19:20:34,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:20:34,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 19:20:34,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:34,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:34,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:20:34,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:20:34,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 19:20:34,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:20:35,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-14 19:20:35,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:35,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:37,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:37,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 19:20:37,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:20:37,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2186 [2020-10-14 19:20:37,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:37,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:37,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:20:37,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:20:37,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-14 19:20:37,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:20:37,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2020-10-14 19:20:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:37,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:37,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:37,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 19:20:37,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:20:37,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 19:20:37,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:37,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:37,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:20:37,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 19:20:37,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:20:37,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:20:38,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 901 proven. 30 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2020-10-14 19:20:38,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097147798] [2020-10-14 19:20:38,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:20:38,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 19:20:38,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493207011] [2020-10-14 19:20:38,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 19:20:38,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:20:38,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 19:20:38,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-14 19:20:38,027 INFO L87 Difference]: Start difference. First operand 108421 states and 127182 transitions. Second operand 9 states. [2020-10-14 19:20:38,324 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 19:20:39,801 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 19:20:43,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:20:43,092 INFO L93 Difference]: Finished difference Result 194482 states and 240137 transitions. [2020-10-14 19:20:43,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 19:20:43,093 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 629 [2020-10-14 19:20:43,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:20:43,435 INFO L225 Difference]: With dead ends: 194482 [2020-10-14 19:20:43,436 INFO L226 Difference]: Without dead ends: 120567 [2020-10-14 19:20:43,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-14 19:20:43,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120567 states. [2020-10-14 19:20:45,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120567 to 117717. [2020-10-14 19:20:45,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117717 states. [2020-10-14 19:20:45,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117717 states to 117717 states and 137364 transitions. [2020-10-14 19:20:45,864 INFO L78 Accepts]: Start accepts. Automaton has 117717 states and 137364 transitions. Word has length 629 [2020-10-14 19:20:45,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:20:45,864 INFO L479 AbstractCegarLoop]: Abstraction has 117717 states and 137364 transitions. [2020-10-14 19:20:45,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 19:20:45,865 INFO L276 IsEmpty]: Start isEmpty. Operand 117717 states and 137364 transitions. [2020-10-14 19:20:45,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 658 [2020-10-14 19:20:45,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:20:45,964 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:20:45,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 19:20:45,964 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:20:45,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:20:45,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1290694450, now seen corresponding path program 1 times [2020-10-14 19:20:45,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:20:45,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286000919] [2020-10-14 19:20:45,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:20:46,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:46,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:46,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:46,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:48,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:51,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:51,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:51,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 675 [2020-10-14 19:20:51,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:20:51,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5101 [2020-10-14 19:20:51,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:51,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:51,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:20:51,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-14 19:20:51,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 251 [2020-10-14 19:20:51,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:20:51,408 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:20:51,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:20:51,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:51,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:51,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:51,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:20:51,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:20:51,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 19:20:51,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:51,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:51,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:20:51,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:20:51,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:20:51,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:20:51,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:20:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:51,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:51,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:51,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 19:20:51,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:20:51,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 19:20:51,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:51,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:51,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:20:51,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:20:51,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:20:51,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:20:51,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 19:20:51,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:51,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:51,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:51,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 19:20:51,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:20:51,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 19:20:51,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:51,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:51,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:20:51,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:20:51,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 19:20:51,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:20:51,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-14 19:20:51,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:51,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:51,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:51,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 19:20:51,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:20:51,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-14 19:20:51,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:51,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:51,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:20:51,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:20:51,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 19:20:51,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:20:52,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-10-14 19:20:52,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:52,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:52,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:52,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 19:20:52,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:20:52,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-14 19:20:52,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:52,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:52,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:20:52,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:20:52,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-14 19:20:52,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:20:54,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-10-14 19:20:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:20:54,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:20:54,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:20:54,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 19:20:54,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:20:54,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:20:54,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:20:54,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:20:54,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:20:54,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 19:20:54,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:20:54,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:20:54,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1189 backedges. 920 proven. 30 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2020-10-14 19:20:54,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1286000919] [2020-10-14 19:20:54,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:20:54,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:20:54,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103679606] [2020-10-14 19:20:54,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:20:54,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:20:54,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:20:54,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:20:54,726 INFO L87 Difference]: Start difference. First operand 117717 states and 137364 transitions. Second operand 8 states. [2020-10-14 19:20:54,981 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 19:20:56,130 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 19:20:57,819 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-14 19:21:04,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:21:04,221 INFO L93 Difference]: Finished difference Result 349560 states and 430454 transitions. [2020-10-14 19:21:04,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 19:21:04,222 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 657 [2020-10-14 19:21:04,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:21:04,917 INFO L225 Difference]: With dead ends: 349560 [2020-10-14 19:21:04,917 INFO L226 Difference]: Without dead ends: 261486 [2020-10-14 19:21:05,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 19:21:05,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261486 states.