/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/Problem15_label12.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:24:28,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:24:28,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:24:28,262 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:24:28,262 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:24:28,263 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:24:28,265 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:24:28,266 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:24:28,268 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:24:28,269 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:24:28,270 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:24:28,271 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:24:28,271 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:24:28,272 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:24:28,273 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:24:28,274 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:24:28,275 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:24:28,276 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:24:28,278 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:24:28,280 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:24:28,281 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:24:28,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:24:28,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:24:28,284 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:24:28,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:24:28,295 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:24:28,295 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:24:28,296 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:24:28,296 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:24:28,299 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:24:28,299 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:24:28,300 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:24:28,300 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:24:28,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:24:28,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:24:28,304 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:24:28,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:24:28,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:24:28,306 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:24:28,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:24:28,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:24:28,309 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 03:24:28,350 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:24:28,351 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:24:28,353 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:24:28,354 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:24:28,354 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:24:28,354 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:24:28,354 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:24:28,354 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:24:28,355 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:24:28,355 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:24:28,356 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:24:28,356 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:24:28,356 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:24:28,357 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:24:28,357 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:24:28,357 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:24:28,357 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:24:28,358 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:24:28,358 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:24:28,358 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:24:28,358 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:24:28,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:24:28,359 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:24:28,359 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:24:28,359 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:24:28,359 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:24:28,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:24:28,360 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:24:28,360 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:24:28,360 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 03:24:28,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:24:28,679 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:24:28,683 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:24:28,685 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:24:28,685 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:24:28,686 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label12.c [2020-10-14 03:24:28,753 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7b9b8d6a/d009a219589a4b878a9b84064739d6d4/FLAGa52ddc9a3 [2020-10-14 03:24:29,443 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:24:29,444 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label12.c [2020-10-14 03:24:29,469 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7b9b8d6a/d009a219589a4b878a9b84064739d6d4/FLAGa52ddc9a3 [2020-10-14 03:24:29,599 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e7b9b8d6a/d009a219589a4b878a9b84064739d6d4 [2020-10-14 03:24:29,608 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:24:29,610 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:24:29,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:24:29,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:24:29,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:24:29,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:24:29" (1/1) ... [2020-10-14 03:24:29,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e1cb5cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:29, skipping insertion in model container [2020-10-14 03:24:29,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:24:29" (1/1) ... [2020-10-14 03:24:29,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:24:29,702 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:24:30,579 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:24:30,592 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:24:31,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:24:31,347 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:24:31,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:31 WrapperNode [2020-10-14 03:24:31,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:24:31,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:24:31,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:24:31,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:24:31,366 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:31" (1/1) ... [2020-10-14 03:24:31,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:31" (1/1) ... [2020-10-14 03:24:31,420 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:31" (1/1) ... [2020-10-14 03:24:31,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:31" (1/1) ... [2020-10-14 03:24:31,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:31" (1/1) ... [2020-10-14 03:24:31,534 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:31" (1/1) ... [2020-10-14 03:24:31,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:31" (1/1) ... [2020-10-14 03:24:31,595 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:24:31,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:24:31,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:24:31,596 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:24:31,597 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:31" (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 03:24:31,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:24:31,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:24:31,709 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:24:31,709 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:24:31,709 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:24:31,709 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:24:31,710 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:24:31,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:24:31,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:24:31,711 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:24:31,711 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:24:31,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:24:31,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:24:37,649 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:24:37,649 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:24:37,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:24:37 BoogieIcfgContainer [2020-10-14 03:24:37,667 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:24:37,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:24:37,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:24:37,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:24:37,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:24:29" (1/3) ... [2020-10-14 03:24:37,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b403ac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:24:37, skipping insertion in model container [2020-10-14 03:24:37,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:24:31" (2/3) ... [2020-10-14 03:24:37,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b403ac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:24:37, skipping insertion in model container [2020-10-14 03:24:37,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:24:37" (3/3) ... [2020-10-14 03:24:37,680 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label12.c [2020-10-14 03:24:37,694 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:24:37,709 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:24:37,724 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:24:37,766 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:24:37,767 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:24:37,767 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:24:37,767 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:24:37,767 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:24:37,767 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:24:37,768 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:24:37,768 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:24:37,807 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 03:24:37,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 03:24:37,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:24:37,825 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] [2020-10-14 03:24:37,825 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:24:37,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:24:37,832 INFO L82 PathProgramCache]: Analyzing trace with hash -397334259, now seen corresponding path program 1 times [2020-10-14 03:24:37,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:24:37,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812899917] [2020-10-14 03:24:37,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:24:38,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:38,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:38,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:38,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 03:24:38,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:38,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 475 [2020-10-14 03:24:38,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:38,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:38,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:24:38,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:24:38,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 03:24:38,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 03:24:38,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:24:38,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:38,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:38,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:38,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:24:38,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:38,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 03:24:38,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:38,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:38,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:24:38,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:38,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:24:38,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:24:38,835 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 03:24:38,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812899917] [2020-10-14 03:24:38,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:24:38,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:24:38,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233570312] [2020-10-14 03:24:38,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:24:38,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:24:38,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:24:38,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:24:38,866 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-14 03:24:45,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:24:45,041 INFO L93 Difference]: Finished difference Result 1199 states and 2164 transitions. [2020-10-14 03:24:45,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:24:45,043 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-10-14 03:24:45,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:24:45,066 INFO L225 Difference]: With dead ends: 1199 [2020-10-14 03:24:45,067 INFO L226 Difference]: Without dead ends: 697 [2020-10-14 03:24:45,079 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:24:45,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-14 03:24:45,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 691. [2020-10-14 03:24:45,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-14 03:24:45,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2020-10-14 03:24:45,188 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 65 [2020-10-14 03:24:45,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:24:45,189 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2020-10-14 03:24:45,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:24:45,189 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2020-10-14 03:24:45,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 03:24:45,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:24:45,197 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:24:45,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:24:45,197 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:24:45,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:24:45,198 INFO L82 PathProgramCache]: Analyzing trace with hash -946297974, now seen corresponding path program 1 times [2020-10-14 03:24:45,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:24:45,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957507246] [2020-10-14 03:24:45,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:24:45,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:45,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:45,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:46,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:48,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:48,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 03:24:48,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:24:48,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3213 [2020-10-14 03:24:48,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:48,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:48,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:24:48,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 03:24:48,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 03:24:48,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:24:48,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:24:48,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:48,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:48,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:48,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:24:48,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:48,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:24:48,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:48,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:48,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:24:48,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:48,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:24:48,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:48,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:24:48,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:48,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:48,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:48,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 03:24:48,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:48,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 03:24:48,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:48,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:48,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:24:48,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:48,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 03:24:48,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:48,796 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 57 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:24:48,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957507246] [2020-10-14 03:24:48,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:24:48,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:24:48,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635371020] [2020-10-14 03:24:48,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:24:48,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:24:48,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:24:48,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:24:48,801 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand 5 states. [2020-10-14 03:24:55,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:24:55,007 INFO L93 Difference]: Finished difference Result 2008 states and 2962 transitions. [2020-10-14 03:24:55,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:24:55,008 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-14 03:24:55,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:24:55,018 INFO L225 Difference]: With dead ends: 2008 [2020-10-14 03:24:55,018 INFO L226 Difference]: Without dead ends: 1323 [2020-10-14 03:24:55,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:24:55,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2020-10-14 03:24:55,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 1317. [2020-10-14 03:24:55,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1317 states. [2020-10-14 03:24:55,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1710 transitions. [2020-10-14 03:24:55,076 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1710 transitions. Word has length 134 [2020-10-14 03:24:55,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:24:55,077 INFO L479 AbstractCegarLoop]: Abstraction has 1317 states and 1710 transitions. [2020-10-14 03:24:55,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:24:55,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1710 transitions. [2020-10-14 03:24:55,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-14 03:24:55,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:24:55,086 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 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 03:24:55,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:24:55,087 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:24:55,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:24:55,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1344158374, now seen corresponding path program 1 times [2020-10-14 03:24:55,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:24:55,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331132916] [2020-10-14 03:24:55,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:24:55,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:55,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:55,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:55,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:56,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:59,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:59,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:59,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-14 03:24:59,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:24:59,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4446 [2020-10-14 03:24:59,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:59,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:59,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:24:59,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 03:24:59,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 03:24:59,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:59,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:24:59,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:59,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:59,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:59,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:24:59,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:59,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:24:59,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:59,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:59,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:24:59,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:59,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:24:59,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:59,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:24:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:59,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:24:59,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:24:59,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 03:24:59,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:24:59,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 03:24:59,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:24:59,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:24:59,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:24:59,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:24:59,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 03:24:59,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:24:59,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 03:24:59,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:24:59,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:00,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:00,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 03:25:00,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:00,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-14 03:25:00,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:00,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:00,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:00,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:25:00,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 03:25:00,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:00,331 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:25:00,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331132916] [2020-10-14 03:25:00,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:25:00,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:25:00,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732179966] [2020-10-14 03:25:00,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:25:00,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:25:00,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:25:00,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:25:00,334 INFO L87 Difference]: Start difference. First operand 1317 states and 1710 transitions. Second operand 7 states. [2020-10-14 03:25:08,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:25:08,651 INFO L93 Difference]: Finished difference Result 3598 states and 4784 transitions. [2020-10-14 03:25:08,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:25:08,652 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 239 [2020-10-14 03:25:08,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:25:08,672 INFO L225 Difference]: With dead ends: 3598 [2020-10-14 03:25:08,672 INFO L226 Difference]: Without dead ends: 2287 [2020-10-14 03:25:08,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:25:08,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2287 states. [2020-10-14 03:25:08,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2287 to 1957. [2020-10-14 03:25:08,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1957 states. [2020-10-14 03:25:08,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 2429 transitions. [2020-10-14 03:25:08,744 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 2429 transitions. Word has length 239 [2020-10-14 03:25:08,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:25:08,745 INFO L479 AbstractCegarLoop]: Abstraction has 1957 states and 2429 transitions. [2020-10-14 03:25:08,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:25:08,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 2429 transitions. [2020-10-14 03:25:08,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-10-14 03:25:08,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:25:08,751 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:25:08,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:25:08,751 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:25:08,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:25:08,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1751440740, now seen corresponding path program 1 times [2020-10-14 03:25:08,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:25:08,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265935220] [2020-10-14 03:25:08,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:25:08,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:08,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:09,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:10,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:13,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:13,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 357 [2020-10-14 03:25:13,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:25:13,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-14 03:25:13,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:13,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:13,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:13,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-14 03:25:13,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 03:25:13,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:13,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:25:13,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:13,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:13,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:13,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:25:13,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:13,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:25:13,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:13,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:13,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:25:13,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:13,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:25:13,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:14,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:25:14,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:14,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:14,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:14,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:25:14,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:14,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-14 03:25:14,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:14,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:14,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:25:14,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:14,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 03:25:14,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:14,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:25:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:14,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:14,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:14,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 03:25:14,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:14,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-14 03:25:14,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:14,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:14,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:14,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:25:14,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 03:25:14,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:14,819 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:25:14,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265935220] [2020-10-14 03:25:14,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:25:14,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:25:14,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499378205] [2020-10-14 03:25:14,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:25:14,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:25:14,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:25:14,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:25:14,823 INFO L87 Difference]: Start difference. First operand 1957 states and 2429 transitions. Second operand 7 states. [2020-10-14 03:25:24,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:25:24,193 INFO L93 Difference]: Finished difference Result 4949 states and 6419 transitions. [2020-10-14 03:25:24,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:25:24,195 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 345 [2020-10-14 03:25:24,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:25:24,220 INFO L225 Difference]: With dead ends: 4949 [2020-10-14 03:25:24,220 INFO L226 Difference]: Without dead ends: 2998 [2020-10-14 03:25:24,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 03:25:24,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2998 states. [2020-10-14 03:25:24,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2998 to 2921. [2020-10-14 03:25:24,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2921 states. [2020-10-14 03:25:24,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2921 states to 2921 states and 3470 transitions. [2020-10-14 03:25:24,317 INFO L78 Accepts]: Start accepts. Automaton has 2921 states and 3470 transitions. Word has length 345 [2020-10-14 03:25:24,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:25:24,318 INFO L479 AbstractCegarLoop]: Abstraction has 2921 states and 3470 transitions. [2020-10-14 03:25:24,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:25:24,318 INFO L276 IsEmpty]: Start isEmpty. Operand 2921 states and 3470 transitions. [2020-10-14 03:25:24,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2020-10-14 03:25:24,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:25:24,328 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:25:24,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:25:24,328 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:25:24,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:25:24,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1267433289, now seen corresponding path program 1 times [2020-10-14 03:25:24,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:25:24,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547737408] [2020-10-14 03:25:24,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:25:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:24,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:24,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:26,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:29,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:29,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 408 [2020-10-14 03:25:29,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:25:29,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-14 03:25:29,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:29,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:29,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:29,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 261 [2020-10-14 03:25:29,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 03:25:29,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:29,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:25:29,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:29,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:29,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:29,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:25:29,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:29,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:25:29,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:29,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:29,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:25:29,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:29,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:25:29,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:29,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:25:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:29,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:30,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:30,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-14 03:25:30,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:30,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-10-14 03:25:30,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:30,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:30,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:25:30,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:30,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 246 [2020-10-14 03:25:30,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:25:30,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-14 03:25:30,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:30,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:30,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:30,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 03:25:30,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:30,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-14 03:25:30,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:30,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:30,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:30,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:25:30,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 03:25:30,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:31,008 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:25:31,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547737408] [2020-10-14 03:25:31,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:25:31,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:25:31,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980941842] [2020-10-14 03:25:31,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:25:31,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:25:31,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:25:31,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:25:31,012 INFO L87 Difference]: Start difference. First operand 2921 states and 3470 transitions. Second operand 8 states. [2020-10-14 03:25:45,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:25:45,984 INFO L93 Difference]: Finished difference Result 8421 states and 10566 transitions. [2020-10-14 03:25:45,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 03:25:45,986 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 396 [2020-10-14 03:25:45,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:25:46,020 INFO L225 Difference]: With dead ends: 8421 [2020-10-14 03:25:46,021 INFO L226 Difference]: Without dead ends: 5506 [2020-10-14 03:25:46,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 03:25:46,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5506 states. [2020-10-14 03:25:46,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5506 to 5174. [2020-10-14 03:25:46,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5174 states. [2020-10-14 03:25:46,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5174 states to 5174 states and 6366 transitions. [2020-10-14 03:25:46,173 INFO L78 Accepts]: Start accepts. Automaton has 5174 states and 6366 transitions. Word has length 396 [2020-10-14 03:25:46,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:25:46,174 INFO L479 AbstractCegarLoop]: Abstraction has 5174 states and 6366 transitions. [2020-10-14 03:25:46,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:25:46,174 INFO L276 IsEmpty]: Start isEmpty. Operand 5174 states and 6366 transitions. [2020-10-14 03:25:46,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2020-10-14 03:25:46,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:25:46,186 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:25:46,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:25:46,186 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:25:46,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:25:46,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1724384589, now seen corresponding path program 1 times [2020-10-14 03:25:46,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:25:46,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85944435] [2020-10-14 03:25:46,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:25:46,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:46,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:46,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:49,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:49,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 431 [2020-10-14 03:25:49,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:25:49,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2815 [2020-10-14 03:25:49,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:49,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:49,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:49,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 03:25:49,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 03:25:49,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:49,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:25:49,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:49,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:49,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:49,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:25:49,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:49,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:25:49,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:49,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:49,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:25:49,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:49,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:25:49,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:25:49,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:25:49,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:49,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:49,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:49,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 03:25:49,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:49,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-14 03:25:49,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:49,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:49,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:25:49,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:25:49,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 03:25:49,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:25:49,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 03:25:49,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:25:49,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:25:50,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:25:50,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 03:25:50,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:25:50,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 03:25:50,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:25:50,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:25:50,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:25:50,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:25:50,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 03:25:50,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:25:50,236 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:25:50,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85944435] [2020-10-14 03:25:50,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:25:50,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:25:50,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328946501] [2020-10-14 03:25:50,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:25:50,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:25:50,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:25:50,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:25:50,240 INFO L87 Difference]: Start difference. First operand 5174 states and 6366 transitions. Second operand 7 states. [2020-10-14 03:26:05,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:26:05,903 INFO L93 Difference]: Finished difference Result 12328 states and 15585 transitions. [2020-10-14 03:26:05,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:26:05,905 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 419 [2020-10-14 03:26:05,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:26:05,946 INFO L225 Difference]: With dead ends: 12328 [2020-10-14 03:26:05,947 INFO L226 Difference]: Without dead ends: 7160 [2020-10-14 03:26:05,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:26:05,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7160 states. [2020-10-14 03:26:06,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7160 to 7121. [2020-10-14 03:26:06,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7121 states. [2020-10-14 03:26:06,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7121 states to 7121 states and 8658 transitions. [2020-10-14 03:26:06,188 INFO L78 Accepts]: Start accepts. Automaton has 7121 states and 8658 transitions. Word has length 419 [2020-10-14 03:26:06,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:26:06,189 INFO L479 AbstractCegarLoop]: Abstraction has 7121 states and 8658 transitions. [2020-10-14 03:26:06,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:26:06,189 INFO L276 IsEmpty]: Start isEmpty. Operand 7121 states and 8658 transitions. [2020-10-14 03:26:06,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2020-10-14 03:26:06,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:26:06,214 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:26:06,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:26:06,214 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:26:06,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:26:06,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1141565383, now seen corresponding path program 1 times [2020-10-14 03:26:06,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:26:06,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727699091] [2020-10-14 03:26:06,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:26:06,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:06,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:06,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:08,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:08,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 462 [2020-10-14 03:26:08,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:26:08,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1780 [2020-10-14 03:26:08,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:08,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:08,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:08,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 03:26:08,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 03:26:08,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:08,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:26:08,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:08,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:08,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:08,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:26:08,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:08,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:26:08,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:08,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:08,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:26:08,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:08,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:26:08,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 03:26:08,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:26:08,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:08,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:08,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:08,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 03:26:08,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:08,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-14 03:26:08,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:08,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:08,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:26:08,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:08,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 03:26:08,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:08,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 03:26:08,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:08,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:08,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:08,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:26:08,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:08,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-14 03:26:08,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:08,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:08,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:08,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:26:08,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:26:08,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:09,229 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 224 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:26:09,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727699091] [2020-10-14 03:26:09,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:26:09,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:26:09,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287335389] [2020-10-14 03:26:09,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:26:09,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:26:09,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:26:09,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:26:09,232 INFO L87 Difference]: Start difference. First operand 7121 states and 8658 transitions. Second operand 7 states. [2020-10-14 03:26:19,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:26:19,968 INFO L93 Difference]: Finished difference Result 15374 states and 19325 transitions. [2020-10-14 03:26:19,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 03:26:19,970 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 450 [2020-10-14 03:26:19,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:26:20,015 INFO L225 Difference]: With dead ends: 15374 [2020-10-14 03:26:20,015 INFO L226 Difference]: Without dead ends: 8259 [2020-10-14 03:26:20,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 03:26:20,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8259 states. [2020-10-14 03:26:20,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8259 to 7787. [2020-10-14 03:26:20,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7787 states. [2020-10-14 03:26:20,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7787 states to 7787 states and 9410 transitions. [2020-10-14 03:26:20,260 INFO L78 Accepts]: Start accepts. Automaton has 7787 states and 9410 transitions. Word has length 450 [2020-10-14 03:26:20,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:26:20,261 INFO L479 AbstractCegarLoop]: Abstraction has 7787 states and 9410 transitions. [2020-10-14 03:26:20,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:26:20,261 INFO L276 IsEmpty]: Start isEmpty. Operand 7787 states and 9410 transitions. [2020-10-14 03:26:20,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2020-10-14 03:26:20,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:26:20,279 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:26:20,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:26:20,279 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:26:20,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:26:20,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1226352459, now seen corresponding path program 1 times [2020-10-14 03:26:20,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:26:20,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1073480577] [2020-10-14 03:26:20,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:26:20,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:20,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:20,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:20,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:25,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:25,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:25,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 520 [2020-10-14 03:26:25,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:26:25,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5098 [2020-10-14 03:26:25,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:25,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:25,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:25,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 261 [2020-10-14 03:26:25,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 03:26:25,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:26:25,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:26:25,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:25,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:25,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:25,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:26:25,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:25,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:26:25,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:25,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:25,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:26:25,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:25,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:26:25,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:26:25,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:26:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:25,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:25,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:25,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-14 03:26:25,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:25,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-14 03:26:25,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:25,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:25,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:26:25,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:25,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 246 [2020-10-14 03:26:25,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:26:25,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-14 03:26:26,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:26,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:26,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:26,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:26:26,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:26,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-14 03:26:26,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:26,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:26,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:26,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:26:26,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 03:26:26,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:26:26,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-10-14 03:26:26,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:26,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:26,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:26,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 03:26:26,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:26,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 03:26:26,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:26,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:26,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:26:26,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-14 03:26:26,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:26:26,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:26:26,966 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 286 proven. 78 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-14 03:26:26,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1073480577] [2020-10-14 03:26:26,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:26:26,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:26:26,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459353450] [2020-10-14 03:26:26,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:26:26,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:26:26,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:26:26,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:26:26,977 INFO L87 Difference]: Start difference. First operand 7787 states and 9410 transitions. Second operand 7 states. [2020-10-14 03:26:37,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:26:37,769 INFO L93 Difference]: Finished difference Result 16200 states and 19703 transitions. [2020-10-14 03:26:37,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:26:37,771 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 506 [2020-10-14 03:26:37,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:26:37,802 INFO L225 Difference]: With dead ends: 16200 [2020-10-14 03:26:37,802 INFO L226 Difference]: Without dead ends: 8419 [2020-10-14 03:26:37,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:26:37,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8419 states. [2020-10-14 03:26:37,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8419 to 8400. [2020-10-14 03:26:37,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8400 states. [2020-10-14 03:26:37,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8400 states to 8400 states and 10069 transitions. [2020-10-14 03:26:37,983 INFO L78 Accepts]: Start accepts. Automaton has 8400 states and 10069 transitions. Word has length 506 [2020-10-14 03:26:37,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:26:37,984 INFO L479 AbstractCegarLoop]: Abstraction has 8400 states and 10069 transitions. [2020-10-14 03:26:37,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:26:37,984 INFO L276 IsEmpty]: Start isEmpty. Operand 8400 states and 10069 transitions. [2020-10-14 03:26:37,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2020-10-14 03:26:37,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:26:37,999 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:26:38,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 03:26:38,000 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:26:38,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:26:38,000 INFO L82 PathProgramCache]: Analyzing trace with hash -820003124, now seen corresponding path program 1 times [2020-10-14 03:26:38,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:26:38,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603720610] [2020-10-14 03:26:38,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:26:38,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:38,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:38,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:39,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:43,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:43,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 535 [2020-10-14 03:26:43,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:26:43,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-14 03:26:43,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:43,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:43,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:43,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 388 [2020-10-14 03:26:43,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 03:26:43,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:43,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:26:43,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:43,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:43,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:43,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:26:43,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:43,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:26:43,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:43,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:43,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:26:43,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:43,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:26:43,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:43,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:26:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:43,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:43,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:43,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-14 03:26:43,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:43,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 03:26:43,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:43,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:43,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:26:43,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:43,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:26:43,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:43,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-14 03:26:43,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:43,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:43,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:43,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 03:26:43,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:43,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 03:26:43,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:43,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:43,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:26:43,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:26:43,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 03:26:43,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:43,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-10-14 03:26:43,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:43,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:43,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:26:43,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 03:26:43,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:26:43,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 03:26:43,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:26:43,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:26:43,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:26:43,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:26:43,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 03:26:43,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:26:43,847 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 331 proven. 2 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-14 03:26:43,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603720610] [2020-10-14 03:26:43,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:26:43,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:26:43,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512483133] [2020-10-14 03:26:43,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:26:43,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:26:43,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:26:43,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:26:43,851 INFO L87 Difference]: Start difference. First operand 8400 states and 10069 transitions. Second operand 7 states. [2020-10-14 03:26:55,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:26:55,331 INFO L93 Difference]: Finished difference Result 21079 states and 26668 transitions. [2020-10-14 03:26:55,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:26:55,334 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 521 [2020-10-14 03:26:55,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:26:55,377 INFO L225 Difference]: With dead ends: 21079 [2020-10-14 03:26:55,377 INFO L226 Difference]: Without dead ends: 10452 [2020-10-14 03:26:55,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:26:55,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10452 states. [2020-10-14 03:26:55,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10452 to 10305. [2020-10-14 03:26:55,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10305 states. [2020-10-14 03:26:55,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10305 states to 10305 states and 11915 transitions. [2020-10-14 03:26:55,670 INFO L78 Accepts]: Start accepts. Automaton has 10305 states and 11915 transitions. Word has length 521 [2020-10-14 03:26:55,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:26:55,671 INFO L479 AbstractCegarLoop]: Abstraction has 10305 states and 11915 transitions. [2020-10-14 03:26:55,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:26:55,671 INFO L276 IsEmpty]: Start isEmpty. Operand 10305 states and 11915 transitions. [2020-10-14 03:26:55,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2020-10-14 03:26:55,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:26:55,688 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:26:55,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 03:26:55,688 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:26:55,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:26:55,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1253231495, now seen corresponding path program 1 times [2020-10-14 03:26:55,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:26:55,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886060238] [2020-10-14 03:26:55,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:26:55,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:26:55,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:56,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:26:58,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:00,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:00,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 543 [2020-10-14 03:27:00,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:27:00,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4246 [2020-10-14 03:27:00,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:00,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:00,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:27:00,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 478 [2020-10-14 03:27:00,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 03:27:00,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:00,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:27:00,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:00,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:00,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:00,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:27:00,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:00,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:27:00,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:00,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:00,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:00,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:00,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:00,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:00,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:27:00,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:00,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:00,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:00,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:27:00,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:00,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 03:27:00,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:00,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:00,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:00,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:00,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:00,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:00,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:27:00,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:00,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:00,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:00,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-14 03:27:00,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:00,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 03:27:00,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:00,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:00,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:00,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:00,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:00,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:00,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-14 03:27:00,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:00,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:00,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:00,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 03:27:00,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:00,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 03:27:00,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:00,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:00,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:27:00,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:00,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 03:27:00,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:27:00,627 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 177 proven. 3 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2020-10-14 03:27:00,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886060238] [2020-10-14 03:27:00,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:27:00,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:27:00,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979868006] [2020-10-14 03:27:00,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:27:00,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:27:00,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:27:00,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:27:00,631 INFO L87 Difference]: Start difference. First operand 10305 states and 11915 transitions. Second operand 5 states. [2020-10-14 03:27:09,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:27:09,039 INFO L93 Difference]: Finished difference Result 21877 states and 25653 transitions. [2020-10-14 03:27:09,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:27:09,041 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 529 [2020-10-14 03:27:09,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:27:09,074 INFO L225 Difference]: With dead ends: 21877 [2020-10-14 03:27:09,075 INFO L226 Difference]: Without dead ends: 11253 [2020-10-14 03:27:09,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:27:09,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11253 states. [2020-10-14 03:27:09,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11253 to 11236. [2020-10-14 03:27:09,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11236 states. [2020-10-14 03:27:09,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11236 states to 11236 states and 12864 transitions. [2020-10-14 03:27:09,306 INFO L78 Accepts]: Start accepts. Automaton has 11236 states and 12864 transitions. Word has length 529 [2020-10-14 03:27:09,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:27:09,307 INFO L479 AbstractCegarLoop]: Abstraction has 11236 states and 12864 transitions. [2020-10-14 03:27:09,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:27:09,307 INFO L276 IsEmpty]: Start isEmpty. Operand 11236 states and 12864 transitions. [2020-10-14 03:27:09,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2020-10-14 03:27:09,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:27:09,322 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:27:09,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 03:27:09,322 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:27:09,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:27:09,323 INFO L82 PathProgramCache]: Analyzing trace with hash 26814782, now seen corresponding path program 1 times [2020-10-14 03:27:09,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:27:09,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [92691439] [2020-10-14 03:27:09,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:27:09,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:09,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:09,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:12,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:14,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:14,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 567 [2020-10-14 03:27:14,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:27:14,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-14 03:27:14,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:14,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:14,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:27:14,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 502 [2020-10-14 03:27:14,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 03:27:14,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:27:14,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:27:14,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:14,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:14,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:14,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:27:14,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:14,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:27:14,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:14,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:14,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:14,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:14,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:14,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:27:14,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:27:14,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:14,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:14,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:14,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:27:14,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:14,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 03:27:14,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:14,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:14,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:14,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:14,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:14,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:27:14,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:27:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:14,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:14,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:14,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-14 03:27:14,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:14,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-14 03:27:14,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:14,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:14,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:14,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:14,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:14,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:27:15,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-10-14 03:27:15,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:15,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:15,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:15,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 03:27:15,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:15,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 03:27:15,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:15,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:15,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:27:15,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:15,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 03:27:15,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:27:15,353 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 177 proven. 3 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2020-10-14 03:27:15,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [92691439] [2020-10-14 03:27:15,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:27:15,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:27:15,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795211944] [2020-10-14 03:27:15,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:27:15,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:27:15,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:27:15,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:27:15,356 INFO L87 Difference]: Start difference. First operand 11236 states and 12864 transitions. Second operand 5 states. [2020-10-14 03:27:22,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:27:22,959 INFO L93 Difference]: Finished difference Result 24028 states and 27915 transitions. [2020-10-14 03:27:22,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:27:22,962 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 553 [2020-10-14 03:27:22,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:27:23,005 INFO L225 Difference]: With dead ends: 24028 [2020-10-14 03:27:23,006 INFO L226 Difference]: Without dead ends: 12480 [2020-10-14 03:27:23,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:27:23,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12480 states. [2020-10-14 03:27:23,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12480 to 11854. [2020-10-14 03:27:23,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11854 states. [2020-10-14 03:27:23,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11854 states to 11854 states and 13339 transitions. [2020-10-14 03:27:23,246 INFO L78 Accepts]: Start accepts. Automaton has 11854 states and 13339 transitions. Word has length 553 [2020-10-14 03:27:23,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:27:23,247 INFO L479 AbstractCegarLoop]: Abstraction has 11854 states and 13339 transitions. [2020-10-14 03:27:23,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:27:23,248 INFO L276 IsEmpty]: Start isEmpty. Operand 11854 states and 13339 transitions. [2020-10-14 03:27:23,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2020-10-14 03:27:23,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:27:23,266 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:27:23,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 03:27:23,266 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:27:23,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:27:23,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1345621702, now seen corresponding path program 1 times [2020-10-14 03:27:23,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:27:23,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909849155] [2020-10-14 03:27:23,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:27:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:23,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:23,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:24,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:26,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:26,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 604 [2020-10-14 03:27:26,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:27:26,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2956 [2020-10-14 03:27:26,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:26,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:26,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:27:26,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 03:27:26,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-14 03:27:26,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:26,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:27:26,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:26,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:26,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:26,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:27:26,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:26,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:27:26,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:26,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:26,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:26,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:26,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:26,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:26,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:27:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:26,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:26,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:26,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 03:27:26,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:26,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 03:27:26,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:26,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:26,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:26,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:26,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:26,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:26,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 03:27:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:26,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:26,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:26,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:27:26,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:26,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 03:27:26,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:26,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:26,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:27:26,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:26,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 03:27:26,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:26,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 03:27:26,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:26,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:26,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:26,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 03:27:26,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:26,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 03:27:26,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:26,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:26,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:27:26,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:27:26,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 03:27:26,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:27,085 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 412 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 03:27:27,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909849155] [2020-10-14 03:27:27,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:27:27,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:27:27,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483105482] [2020-10-14 03:27:27,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:27:27,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:27:27,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:27:27,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:27:27,087 INFO L87 Difference]: Start difference. First operand 11854 states and 13339 transitions. Second operand 7 states. [2020-10-14 03:27:37,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:27:37,826 INFO L93 Difference]: Finished difference Result 29005 states and 33302 transitions. [2020-10-14 03:27:37,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:27:37,828 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 590 [2020-10-14 03:27:37,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:27:37,887 INFO L225 Difference]: With dead ends: 29005 [2020-10-14 03:27:37,887 INFO L226 Difference]: Without dead ends: 17157 [2020-10-14 03:27:37,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:27:37,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17157 states. [2020-10-14 03:27:38,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17157 to 14641. [2020-10-14 03:27:38,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14641 states. [2020-10-14 03:27:38,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14641 states to 14641 states and 16808 transitions. [2020-10-14 03:27:38,207 INFO L78 Accepts]: Start accepts. Automaton has 14641 states and 16808 transitions. Word has length 590 [2020-10-14 03:27:38,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:27:38,209 INFO L479 AbstractCegarLoop]: Abstraction has 14641 states and 16808 transitions. [2020-10-14 03:27:38,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:27:38,209 INFO L276 IsEmpty]: Start isEmpty. Operand 14641 states and 16808 transitions. [2020-10-14 03:27:38,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2020-10-14 03:27:38,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:27:38,235 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:27:38,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 03:27:38,235 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:27:38,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:27:38,236 INFO L82 PathProgramCache]: Analyzing trace with hash -732552157, now seen corresponding path program 1 times [2020-10-14 03:27:38,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:27:38,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889169881] [2020-10-14 03:27:38,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:27:38,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:38,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:38,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:41,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:41,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 638 [2020-10-14 03:27:41,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:27:41,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2640 [2020-10-14 03:27:41,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:41,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:41,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:27:41,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 491 [2020-10-14 03:27:41,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 03:27:41,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:41,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:27:41,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:41,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:41,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:41,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:27:41,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:41,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:27:41,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:41,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:41,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:41,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:41,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:41,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:41,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:27:41,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:41,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:41,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:41,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 03:27:41,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:41,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 03:27:41,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:41,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:41,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:41,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:41,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:41,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:41,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 03:27:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:41,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:41,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:41,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 03:27:41,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:41,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-14 03:27:41,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:41,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:41,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:27:41,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:41,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-14 03:27:41,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:41,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-14 03:27:41,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:41,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:41,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:41,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 03:27:41,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:41,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 03:27:41,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:41,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:41,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:27:41,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:27:41,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 03:27:41,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:41,818 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 333 proven. 2 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2020-10-14 03:27:41,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1889169881] [2020-10-14 03:27:41,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:27:41,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:27:41,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44423149] [2020-10-14 03:27:41,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:27:41,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:27:41,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:27:41,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:27:41,820 INFO L87 Difference]: Start difference. First operand 14641 states and 16808 transitions. Second operand 7 states. [2020-10-14 03:27:51,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:27:51,795 INFO L93 Difference]: Finished difference Result 34171 states and 40891 transitions. [2020-10-14 03:27:51,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 03:27:51,797 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 624 [2020-10-14 03:27:51,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:27:51,856 INFO L225 Difference]: With dead ends: 34171 [2020-10-14 03:27:51,856 INFO L226 Difference]: Without dead ends: 19536 [2020-10-14 03:27:51,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 03:27:51,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19536 states. [2020-10-14 03:27:52,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19536 to 18969. [2020-10-14 03:27:52,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18969 states. [2020-10-14 03:27:52,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18969 states to 18969 states and 21490 transitions. [2020-10-14 03:27:52,291 INFO L78 Accepts]: Start accepts. Automaton has 18969 states and 21490 transitions. Word has length 624 [2020-10-14 03:27:52,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:27:52,293 INFO L479 AbstractCegarLoop]: Abstraction has 18969 states and 21490 transitions. [2020-10-14 03:27:52,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:27:52,293 INFO L276 IsEmpty]: Start isEmpty. Operand 18969 states and 21490 transitions. [2020-10-14 03:27:52,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 637 [2020-10-14 03:27:52,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:27:52,315 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:27:52,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 03:27:52,316 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:27:52,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:27:52,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1271730903, now seen corresponding path program 1 times [2020-10-14 03:27:52,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:27:52,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655618524] [2020-10-14 03:27:52,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:27:52,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:52,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:52,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:54,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:54,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 650 [2020-10-14 03:27:54,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:27:54,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2024 [2020-10-14 03:27:54,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:54,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:54,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:27:54,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 585 [2020-10-14 03:27:54,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 03:27:54,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:54,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:27:54,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:54,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:54,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:54,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:27:54,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:54,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:27:54,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:54,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:54,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:54,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:54,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:54,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:54,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:27:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:54,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:54,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:54,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 03:27:54,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:54,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 03:27:54,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:54,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:54,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:54,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:54,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:54,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:54,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 03:27:54,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:54,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:54,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:54,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 03:27:54,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:54,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 03:27:54,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:54,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:54,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:27:54,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:54,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:27:54,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:54,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 03:27:54,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:27:54,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:27:55,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:27:55,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-14 03:27:55,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:27:55,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 03:27:55,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:27:55,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:27:55,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:27:55,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:27:55,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-14 03:27:55,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:27:55,206 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 177 proven. 3 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2020-10-14 03:27:55,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655618524] [2020-10-14 03:27:55,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:27:55,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:27:55,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414257385] [2020-10-14 03:27:55,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:27:55,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:27:55,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:27:55,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:27:55,208 INFO L87 Difference]: Start difference. First operand 18969 states and 21490 transitions. Second operand 5 states. [2020-10-14 03:28:05,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:28:05,737 INFO L93 Difference]: Finished difference Result 39473 states and 45122 transitions. [2020-10-14 03:28:05,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:28:05,739 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 636 [2020-10-14 03:28:05,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:28:05,791 INFO L225 Difference]: With dead ends: 39473 [2020-10-14 03:28:05,791 INFO L226 Difference]: Without dead ends: 20510 [2020-10-14 03:28:05,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:28:05,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20510 states. [2020-10-14 03:28:06,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20510 to 20199. [2020-10-14 03:28:06,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20199 states. [2020-10-14 03:28:06,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20199 states to 20199 states and 22763 transitions. [2020-10-14 03:28:06,306 INFO L78 Accepts]: Start accepts. Automaton has 20199 states and 22763 transitions. Word has length 636 [2020-10-14 03:28:06,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:28:06,307 INFO L479 AbstractCegarLoop]: Abstraction has 20199 states and 22763 transitions. [2020-10-14 03:28:06,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:28:06,307 INFO L276 IsEmpty]: Start isEmpty. Operand 20199 states and 22763 transitions. [2020-10-14 03:28:06,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 720 [2020-10-14 03:28:06,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:28:06,337 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:28:06,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 03:28:06,337 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:28:06,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:28:06,337 INFO L82 PathProgramCache]: Analyzing trace with hash -668258512, now seen corresponding path program 1 times [2020-10-14 03:28:06,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:28:06,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [113654155] [2020-10-14 03:28:06,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:28:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:28:06,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:28:07,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking...