/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_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:32:03,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:32:03,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:32:03,346 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:32:03,347 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:32:03,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:32:03,357 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:32:03,360 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:32:03,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:32:03,366 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:32:03,367 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:32:03,368 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:32:03,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:32:03,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:32:03,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:32:03,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:32:03,379 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:32:03,381 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:32:03,383 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:32:03,392 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:32:03,394 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:32:03,395 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:32:03,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:32:03,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:32:03,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:32:03,404 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:32:03,405 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:32:03,406 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:32:03,406 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:32:03,407 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:32:03,407 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:32:03,414 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:32:03,415 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:32:03,416 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:32:03,417 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:32:03,417 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:32:03,418 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:32:03,418 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:32:03,419 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:32:03,420 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:32:03,420 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:32:03,421 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 03:32:03,443 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:32:03,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:32:03,445 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:32:03,445 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:32:03,445 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:32:03,446 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:32:03,446 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:32:03,446 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:32:03,446 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:32:03,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:32:03,447 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:32:03,447 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:32:03,447 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:32:03,447 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:32:03,447 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:32:03,447 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:32:03,448 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:32:03,448 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:32:03,448 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:32:03,448 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:32:03,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:32:03,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:32:03,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:32:03,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:32:03,449 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:32:03,450 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:32:03,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:32:03,450 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:32:03,450 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:32:03,450 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 03:32:03,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:32:03,797 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:32:03,800 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:32:03,802 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:32:03,803 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:32:03,803 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label40.c [2020-10-14 03:32:03,864 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6415a6ec8/247df8e370734cb2a5decae111ff7356/FLAGf1b857d58 [2020-10-14 03:32:04,564 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:32:04,565 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label40.c [2020-10-14 03:32:04,585 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6415a6ec8/247df8e370734cb2a5decae111ff7356/FLAGf1b857d58 [2020-10-14 03:32:04,742 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6415a6ec8/247df8e370734cb2a5decae111ff7356 [2020-10-14 03:32:04,754 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:32:04,756 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:32:04,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:32:04,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:32:04,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:32:04,763 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:32:04" (1/1) ... [2020-10-14 03:32:04,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@732e1168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:32:04, skipping insertion in model container [2020-10-14 03:32:04,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:32:04" (1/1) ... [2020-10-14 03:32:04,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:32:04,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:32:05,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:32:05,936 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:32:06,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:32:06,368 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:32:06,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:32:06 WrapperNode [2020-10-14 03:32:06,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:32:06,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:32:06,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:32:06,370 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:32:06,384 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:32:06" (1/1) ... [2020-10-14 03:32:06,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:32:06" (1/1) ... [2020-10-14 03:32:06,439 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:32:06" (1/1) ... [2020-10-14 03:32:06,440 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:32:06" (1/1) ... [2020-10-14 03:32:06,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:32:06" (1/1) ... [2020-10-14 03:32:06,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:32:06" (1/1) ... [2020-10-14 03:32:06,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:32:06" (1/1) ... [2020-10-14 03:32:06,574 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:32:06,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:32:06,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:32:06,575 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:32:06,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:32:06" (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 03:32:06,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:32:06,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:32:06,657 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:32:06,657 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:32:06,657 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:32:06,657 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:32:06,658 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:32:06,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:32:06,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:32:06,659 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:32:06,660 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:32:06,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:32:06,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:32:12,357 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:32:12,357 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:32:12,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:32:12 BoogieIcfgContainer [2020-10-14 03:32:12,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:32:12,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:32:12,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:32:12,370 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:32:12,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:32:04" (1/3) ... [2020-10-14 03:32:12,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79676fdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:32:12, skipping insertion in model container [2020-10-14 03:32:12,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:32:06" (2/3) ... [2020-10-14 03:32:12,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79676fdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:32:12, skipping insertion in model container [2020-10-14 03:32:12,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:32:12" (3/3) ... [2020-10-14 03:32:12,374 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label40.c [2020-10-14 03:32:12,384 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:32:12,393 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:32:12,407 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:32:12,435 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:32:12,435 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:32:12,435 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:32:12,436 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:32:12,436 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:32:12,436 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:32:12,436 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:32:12,436 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:32:12,464 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 03:32:12,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 03:32:12,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:32:12,473 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] [2020-10-14 03:32:12,473 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:32:12,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:32:12,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1190948056, now seen corresponding path program 1 times [2020-10-14 03:32:12,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:32:12,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614422314] [2020-10-14 03:32:12,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:32:12,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:12,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:12,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:12,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 03:32:12,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:12,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-10-14 03:32:12,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:12,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:12,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:32:12,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:32:12,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 03:32:12,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 03:32:13,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:32:13,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:13,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:13,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:13,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:32:13,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:13,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 03:32:13,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:13,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:13,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:32:13,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:13,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:32:13,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:13,143 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 03:32:13,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614422314] [2020-10-14 03:32:13,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:32:13,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:32:13,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840910949] [2020-10-14 03:32:13,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:32:13,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:32:13,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:32:13,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:32:13,177 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-14 03:32:22,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:32:22,052 INFO L93 Difference]: Finished difference Result 1199 states and 2164 transitions. [2020-10-14 03:32:22,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:32:22,054 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-14 03:32:22,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:32:22,076 INFO L225 Difference]: With dead ends: 1199 [2020-10-14 03:32:22,076 INFO L226 Difference]: Without dead ends: 697 [2020-10-14 03:32:22,090 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 03:32:22,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-14 03:32:22,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 691. [2020-10-14 03:32:22,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-14 03:32:22,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2020-10-14 03:32:22,197 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 32 [2020-10-14 03:32:22,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:32:22,198 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2020-10-14 03:32:22,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:32:22,199 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2020-10-14 03:32:22,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-14 03:32:22,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:32:22,204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:32:22,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:32:22,205 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:32:22,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:32:22,205 INFO L82 PathProgramCache]: Analyzing trace with hash 679417420, now seen corresponding path program 1 times [2020-10-14 03:32:22,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:32:22,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798081684] [2020-10-14 03:32:22,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:32:22,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:22,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:22,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:23,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:23,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 03:32:23,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:32:23,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1315 [2020-10-14 03:32:23,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:23,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:23,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:32:23,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 03:32:23,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 03:32:23,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:32:23,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:32:23,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:23,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:23,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:23,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:32:23,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:23,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:32:23,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:23,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:23,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:32:23,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:23,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:32:23,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:23,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:32:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:23,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:23,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:23,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 03:32:23,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:23,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 03:32:23,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:23,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:23,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:32:23,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:23,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 03:32:23,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:23,832 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:32:23,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798081684] [2020-10-14 03:32:23,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:32:23,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:32:23,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876110009] [2020-10-14 03:32:23,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:32:23,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:32:23,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:32:23,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:32:23,837 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand 5 states. [2020-10-14 03:32:32,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:32:32,866 INFO L93 Difference]: Finished difference Result 1709 states and 2605 transitions. [2020-10-14 03:32:32,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:32:32,867 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-14 03:32:32,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:32:32,875 INFO L225 Difference]: With dead ends: 1709 [2020-10-14 03:32:32,875 INFO L226 Difference]: Without dead ends: 1024 [2020-10-14 03:32:32,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:32:32,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2020-10-14 03:32:32,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1020. [2020-10-14 03:32:32,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1020 states. [2020-10-14 03:32:32,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1463 transitions. [2020-10-14 03:32:32,929 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1463 transitions. Word has length 101 [2020-10-14 03:32:32,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:32:32,930 INFO L479 AbstractCegarLoop]: Abstraction has 1020 states and 1463 transitions. [2020-10-14 03:32:32,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:32:32,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1463 transitions. [2020-10-14 03:32:32,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-14 03:32:32,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:32:32,935 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:32:32,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:32:32,936 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:32:32,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:32:32,937 INFO L82 PathProgramCache]: Analyzing trace with hash -542058555, now seen corresponding path program 1 times [2020-10-14 03:32:32,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:32:32,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484622682] [2020-10-14 03:32:32,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:32:32,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:33,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:33,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:34,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:34,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 03:32:34,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:32:34,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1165 [2020-10-14 03:32:34,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:34,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:34,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:32:34,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 03:32:34,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 03:32:34,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:34,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:32:34,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:34,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:34,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:34,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:32:34,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:34,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:32:34,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:34,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:34,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:32:34,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:34,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:32:34,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:34,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:32:34,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:34,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:34,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:34,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 03:32:34,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:34,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 03:32:34,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:34,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:34,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:32:34,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:34,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 03:32:34,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:34,523 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:32:34,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484622682] [2020-10-14 03:32:34,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:32:34,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:32:34,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963845305] [2020-10-14 03:32:34,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:32:34,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:32:34,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:32:34,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:32:34,526 INFO L87 Difference]: Start difference. First operand 1020 states and 1463 transitions. Second operand 5 states. [2020-10-14 03:32:43,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:32:43,254 INFO L93 Difference]: Finished difference Result 2360 states and 3507 transitions. [2020-10-14 03:32:43,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:32:43,256 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-14 03:32:43,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:32:43,265 INFO L225 Difference]: With dead ends: 2360 [2020-10-14 03:32:43,265 INFO L226 Difference]: Without dead ends: 1346 [2020-10-14 03:32:43,269 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 03:32:43,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1346 states. [2020-10-14 03:32:43,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1346 to 1342. [2020-10-14 03:32:43,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1342 states. [2020-10-14 03:32:43,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 1911 transitions. [2020-10-14 03:32:43,327 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 1911 transitions. Word has length 117 [2020-10-14 03:32:43,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:32:43,330 INFO L479 AbstractCegarLoop]: Abstraction has 1342 states and 1911 transitions. [2020-10-14 03:32:43,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:32:43,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 1911 transitions. [2020-10-14 03:32:43,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-14 03:32:43,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:32:43,346 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:32:43,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:32:43,346 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:32:43,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:32:43,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1121555346, now seen corresponding path program 1 times [2020-10-14 03:32:43,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:32:43,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841188302] [2020-10-14 03:32:43,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:32:43,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:43,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:43,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:44,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:44,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 03:32:44,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:32:44,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 957 [2020-10-14 03:32:44,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:44,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:44,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:32:44,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-14 03:32:44,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 03:32:44,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 03:32:44,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:32:44,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:44,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:44,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:44,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:32:44,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:44,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 03:32:44,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:44,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:44,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:32:44,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:44,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:32:44,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:32:44,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:32:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:44,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:44,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:44,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 03:32:44,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:44,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-14 03:32:44,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:44,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:44,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:32:44,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:44,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 03:32:44,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:44,681 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:32:44,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841188302] [2020-10-14 03:32:44,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:32:44,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:32:44,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561445440] [2020-10-14 03:32:44,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:32:44,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:32:44,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:32:44,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:32:44,689 INFO L87 Difference]: Start difference. First operand 1342 states and 1911 transitions. Second operand 5 states. [2020-10-14 03:32:54,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:32:54,539 INFO L93 Difference]: Finished difference Result 3950 states and 5716 transitions. [2020-10-14 03:32:54,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:32:54,545 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2020-10-14 03:32:54,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:32:54,560 INFO L225 Difference]: With dead ends: 3950 [2020-10-14 03:32:54,561 INFO L226 Difference]: Without dead ends: 2614 [2020-10-14 03:32:54,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:32:54,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2614 states. [2020-10-14 03:32:54,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2614 to 2600. [2020-10-14 03:32:54,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2600 states. [2020-10-14 03:32:54,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2600 states to 2600 states and 3486 transitions. [2020-10-14 03:32:54,648 INFO L78 Accepts]: Start accepts. Automaton has 2600 states and 3486 transitions. Word has length 123 [2020-10-14 03:32:54,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:32:54,649 INFO L479 AbstractCegarLoop]: Abstraction has 2600 states and 3486 transitions. [2020-10-14 03:32:54,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:32:54,649 INFO L276 IsEmpty]: Start isEmpty. Operand 2600 states and 3486 transitions. [2020-10-14 03:32:54,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 03:32:54,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:32:54,652 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:32:54,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:32:54,652 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:32:54,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:32:54,653 INFO L82 PathProgramCache]: Analyzing trace with hash -161040052, now seen corresponding path program 1 times [2020-10-14 03:32:54,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:32:54,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45456809] [2020-10-14 03:32:54,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:32:54,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:54,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:54,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:55,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:55,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 03:32:55,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:32:55,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 815 [2020-10-14 03:32:55,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:55,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:55,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:32:55,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-14 03:32:55,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 03:32:55,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:55,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:32:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:55,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:55,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:55,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:32:55,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:55,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:32:55,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:55,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:55,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:32:55,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:55,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:32:55,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:55,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:32:55,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:55,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:55,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:55,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-14 03:32:55,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:55,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 03:32:55,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:55,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:55,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:32:55,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:55,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 03:32:55,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:55,824 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:32:55,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45456809] [2020-10-14 03:32:55,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:32:55,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:32:55,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659492902] [2020-10-14 03:32:55,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:32:55,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:32:55,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:32:55,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:32:55,831 INFO L87 Difference]: Start difference. First operand 2600 states and 3486 transitions. Second operand 5 states. [2020-10-14 03:33:03,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:33:03,810 INFO L93 Difference]: Finished difference Result 7701 states and 10508 transitions. [2020-10-14 03:33:03,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:33:03,814 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-14 03:33:03,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:33:03,846 INFO L225 Difference]: With dead ends: 7701 [2020-10-14 03:33:03,847 INFO L226 Difference]: Without dead ends: 5107 [2020-10-14 03:33:03,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:33:03,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5107 states. [2020-10-14 03:33:04,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5107 to 5096. [2020-10-14 03:33:04,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5096 states. [2020-10-14 03:33:04,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5096 states to 5096 states and 6627 transitions. [2020-10-14 03:33:04,039 INFO L78 Accepts]: Start accepts. Automaton has 5096 states and 6627 transitions. Word has length 128 [2020-10-14 03:33:04,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:33:04,040 INFO L479 AbstractCegarLoop]: Abstraction has 5096 states and 6627 transitions. [2020-10-14 03:33:04,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:33:04,041 INFO L276 IsEmpty]: Start isEmpty. Operand 5096 states and 6627 transitions. [2020-10-14 03:33:04,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-14 03:33:04,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:33:04,050 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:33:04,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:33:04,051 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:33:04,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:33:04,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1035426491, now seen corresponding path program 1 times [2020-10-14 03:33:04,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:33:04,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214495624] [2020-10-14 03:33:04,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:33:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:04,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:04,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:04,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:05,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:07,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:07,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:09,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:09,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-14 03:33:09,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 03:33:09,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 03:33:09,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:09,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:09,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:33:09,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 03:33:09,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 03:33:09,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:09,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:33:09,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:09,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:09,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:09,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:33:09,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:09,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:33:09,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:09,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:09,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:33:09,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:33:09,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:33:09,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:09,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:33:09,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:09,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:09,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:09,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 03:33:09,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:09,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 03:33:09,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:09,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:09,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:33:09,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:33:09,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 03:33:09,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:09,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 03:33:09,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:09,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:09,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:09,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 03:33:09,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:09,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-14 03:33:09,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:09,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:09,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:33:09,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:33:09,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 03:33:09,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:09,648 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:33:09,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214495624] [2020-10-14 03:33:09,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:33:09,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:33:09,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588124923] [2020-10-14 03:33:09,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:33:09,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:33:09,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:33:09,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:33:09,653 INFO L87 Difference]: Start difference. First operand 5096 states and 6627 transitions. Second operand 7 states. [2020-10-14 03:33:19,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:33:19,511 INFO L93 Difference]: Finished difference Result 13994 states and 18734 transitions. [2020-10-14 03:33:19,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:33:19,513 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 179 [2020-10-14 03:33:19,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:33:19,553 INFO L225 Difference]: With dead ends: 13994 [2020-10-14 03:33:19,553 INFO L226 Difference]: Without dead ends: 6711 [2020-10-14 03:33:19,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:33:19,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6711 states. [2020-10-14 03:33:19,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6711 to 6672. [2020-10-14 03:33:19,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6672 states. [2020-10-14 03:33:19,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6672 states to 6672 states and 7824 transitions. [2020-10-14 03:33:19,790 INFO L78 Accepts]: Start accepts. Automaton has 6672 states and 7824 transitions. Word has length 179 [2020-10-14 03:33:19,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:33:19,791 INFO L479 AbstractCegarLoop]: Abstraction has 6672 states and 7824 transitions. [2020-10-14 03:33:19,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:33:19,791 INFO L276 IsEmpty]: Start isEmpty. Operand 6672 states and 7824 transitions. [2020-10-14 03:33:19,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-14 03:33:19,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:33:19,796 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:33:19,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:33:19,797 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:33:19,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:33:19,797 INFO L82 PathProgramCache]: Analyzing trace with hash 316777602, now seen corresponding path program 1 times [2020-10-14 03:33:19,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:33:19,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197172489] [2020-10-14 03:33:19,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:33:19,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:19,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:20,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:20,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:22,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:22,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-14 03:33:22,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:33:22,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2284 [2020-10-14 03:33:22,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:22,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:22,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:33:22,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 170 [2020-10-14 03:33:22,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 03:33:22,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 03:33:22,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:33:22,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:22,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:22,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:22,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:33:22,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:22,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:33:22,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:22,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:22,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:33:22,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:33:22,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:33:22,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:22,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:33:22,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:22,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:22,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:22,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 03:33:22,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:22,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 03:33:22,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:22,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:22,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:33:22,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:33:22,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:33:22,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:22,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-14 03:33:22,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:22,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:22,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:22,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 03:33:22,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:22,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 03:33:22,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:22,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:22,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:33:22,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:33:22,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 03:33:22,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:22,542 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-14 03:33:22,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197172489] [2020-10-14 03:33:22,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:33:22,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 03:33:22,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368419988] [2020-10-14 03:33:22,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 03:33:22,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:33:22,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 03:33:22,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:33:22,546 INFO L87 Difference]: Start difference. First operand 6672 states and 7824 transitions. Second operand 6 states. [2020-10-14 03:33:31,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:33:31,236 INFO L93 Difference]: Finished difference Result 18991 states and 23110 transitions. [2020-10-14 03:33:31,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 03:33:31,237 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 190 [2020-10-14 03:33:31,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:33:31,300 INFO L225 Difference]: With dead ends: 18991 [2020-10-14 03:33:31,301 INFO L226 Difference]: Without dead ends: 12325 [2020-10-14 03:33:31,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:33:31,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12325 states. [2020-10-14 03:33:31,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12325 to 10134. [2020-10-14 03:33:31,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10134 states. [2020-10-14 03:33:31,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10134 states to 10134 states and 12131 transitions. [2020-10-14 03:33:31,593 INFO L78 Accepts]: Start accepts. Automaton has 10134 states and 12131 transitions. Word has length 190 [2020-10-14 03:33:31,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:33:31,594 INFO L479 AbstractCegarLoop]: Abstraction has 10134 states and 12131 transitions. [2020-10-14 03:33:31,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 03:33:31,594 INFO L276 IsEmpty]: Start isEmpty. Operand 10134 states and 12131 transitions. [2020-10-14 03:33:31,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-14 03:33:31,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:33:31,600 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:33:31,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:33:31,600 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:33:31,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:33:31,601 INFO L82 PathProgramCache]: Analyzing trace with hash -118965433, now seen corresponding path program 1 times [2020-10-14 03:33:31,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:33:31,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597602110] [2020-10-14 03:33:31,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:33:31,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:31,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:32,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:32,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-14 03:33:32,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:32,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 430 [2020-10-14 03:33:32,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:32,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:32,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:33:32,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:33:32,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-14 03:33:32,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:32,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:33:32,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:32,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:32,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:32,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:33:32,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:32,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:33:32,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:32,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:32,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:33:32,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:33:32,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:33:32,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:32,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:33:32,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:32,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:32,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:32,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-14 03:33:32,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:32,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 388 [2020-10-14 03:33:32,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:32,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:32,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:33:32,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:33:32,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-14 03:33:32,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:32,871 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:33:32,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597602110] [2020-10-14 03:33:32,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:33:32,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 03:33:32,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842039388] [2020-10-14 03:33:32,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:33:32,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:33:32,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:33:32,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:33:32,875 INFO L87 Difference]: Start difference. First operand 10134 states and 12131 transitions. Second operand 7 states. [2020-10-14 03:33:42,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:33:42,125 INFO L93 Difference]: Finished difference Result 23781 states and 29162 transitions. [2020-10-14 03:33:42,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:33:42,128 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 202 [2020-10-14 03:33:42,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:33:42,286 INFO L225 Difference]: With dead ends: 23781 [2020-10-14 03:33:42,286 INFO L226 Difference]: Without dead ends: 13653 [2020-10-14 03:33:42,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:33:42,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13653 states. [2020-10-14 03:33:42,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13653 to 13005. [2020-10-14 03:33:42,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13005 states. [2020-10-14 03:33:42,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13005 states to 13005 states and 15315 transitions. [2020-10-14 03:33:42,683 INFO L78 Accepts]: Start accepts. Automaton has 13005 states and 15315 transitions. Word has length 202 [2020-10-14 03:33:42,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:33:42,684 INFO L479 AbstractCegarLoop]: Abstraction has 13005 states and 15315 transitions. [2020-10-14 03:33:42,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:33:42,685 INFO L276 IsEmpty]: Start isEmpty. Operand 13005 states and 15315 transitions. [2020-10-14 03:33:42,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2020-10-14 03:33:42,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:33:42,698 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:33:42,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 03:33:42,699 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:33:42,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:33:42,699 INFO L82 PathProgramCache]: Analyzing trace with hash 2053457187, now seen corresponding path program 1 times [2020-10-14 03:33:42,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:33:42,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889271775] [2020-10-14 03:33:42,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:33:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:42,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:43,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:47,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:47,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 414 [2020-10-14 03:33:47,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:33:47,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4947 [2020-10-14 03:33:47,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:47,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:47,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:33:47,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-14 03:33:47,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-14 03:33:47,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:47,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:33:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:47,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:47,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:47,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:33:47,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:47,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:33:47,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:47,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:47,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:33:47,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:33:47,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:33:47,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:47,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:33:47,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:48,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:48,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:48,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:33:48,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:48,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-14 03:33:48,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:48,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:48,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:33:48,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:33:48,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 03:33:48,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:48,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:33:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:48,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:48,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:48,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-14 03:33:48,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:48,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 332 [2020-10-14 03:33:48,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:48,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:48,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:33:48,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:33:48,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-14 03:33:48,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:49,123 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 217 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:33:49,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889271775] [2020-10-14 03:33:49,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:33:49,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:33:49,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747776167] [2020-10-14 03:33:49,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:33:49,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:33:49,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:33:49,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:33:49,135 INFO L87 Difference]: Start difference. First operand 13005 states and 15315 transitions. Second operand 7 states. [2020-10-14 03:33:57,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:33:57,084 INFO L93 Difference]: Finished difference Result 29736 states and 35345 transitions. [2020-10-14 03:33:57,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:33:57,086 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 402 [2020-10-14 03:33:57,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:33:57,167 INFO L225 Difference]: With dead ends: 29736 [2020-10-14 03:33:57,167 INFO L226 Difference]: Without dead ends: 16737 [2020-10-14 03:33:57,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:33:57,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16737 states. [2020-10-14 03:33:57,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16737 to 16099. [2020-10-14 03:33:57,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16099 states. [2020-10-14 03:33:57,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16099 states to 16099 states and 18209 transitions. [2020-10-14 03:33:57,555 INFO L78 Accepts]: Start accepts. Automaton has 16099 states and 18209 transitions. Word has length 402 [2020-10-14 03:33:57,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:33:57,556 INFO L479 AbstractCegarLoop]: Abstraction has 16099 states and 18209 transitions. [2020-10-14 03:33:57,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:33:57,556 INFO L276 IsEmpty]: Start isEmpty. Operand 16099 states and 18209 transitions. [2020-10-14 03:33:57,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2020-10-14 03:33:57,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:33:57,573 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:33:57,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 03:33:57,574 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:33:57,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:33:57,574 INFO L82 PathProgramCache]: Analyzing trace with hash -206091137, now seen corresponding path program 1 times [2020-10-14 03:33:57,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:33:57,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228175719] [2020-10-14 03:33:57,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:33:57,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:57,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:58,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:59,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:01,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:02,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:02,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 491 [2020-10-14 03:34:02,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:34:02,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 03:34:02,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:02,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:02,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:34:02,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 210 [2020-10-14 03:34:02,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-14 03:34:02,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:02,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:34:02,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:02,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:02,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:02,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:34:02,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:02,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:34:02,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:02,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:02,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:34:02,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:34:02,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:34:02,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:02,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:34:02,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:03,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:03,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:03,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:34:03,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:03,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-10-14 03:34:03,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:03,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:03,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:34:03,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:34:03,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 03:34:03,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:03,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:34:03,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:03,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:03,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:03,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 03:34:03,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:03,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-10-14 03:34:03,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:03,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:03,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:34:03,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:34:03,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-14 03:34:03,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:03,847 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 247 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:34:03,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228175719] [2020-10-14 03:34:03,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:34:03,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:34:03,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548982353] [2020-10-14 03:34:03,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:34:03,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:34:03,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:34:03,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:34:03,850 INFO L87 Difference]: Start difference. First operand 16099 states and 18209 transitions. Second operand 7 states. [2020-10-14 03:34:15,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:34:15,439 INFO L93 Difference]: Finished difference Result 39033 states and 44592 transitions. [2020-10-14 03:34:15,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:34:15,441 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 479 [2020-10-14 03:34:15,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:34:15,537 INFO L225 Difference]: With dead ends: 39033 [2020-10-14 03:34:15,538 INFO L226 Difference]: Without dead ends: 22940 [2020-10-14 03:34:15,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 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 03:34:15,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22940 states. [2020-10-14 03:34:16,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22940 to 21051. [2020-10-14 03:34:16,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21051 states. [2020-10-14 03:34:16,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21051 states to 21051 states and 23986 transitions. [2020-10-14 03:34:16,121 INFO L78 Accepts]: Start accepts. Automaton has 21051 states and 23986 transitions. Word has length 479 [2020-10-14 03:34:16,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:34:16,122 INFO L479 AbstractCegarLoop]: Abstraction has 21051 states and 23986 transitions. [2020-10-14 03:34:16,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:34:16,123 INFO L276 IsEmpty]: Start isEmpty. Operand 21051 states and 23986 transitions. [2020-10-14 03:34:16,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2020-10-14 03:34:16,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:34:16,147 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:34:16,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 03:34:16,148 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:34:16,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:34:16,148 INFO L82 PathProgramCache]: Analyzing trace with hash -860292112, now seen corresponding path program 1 times [2020-10-14 03:34:16,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:34:16,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262676388] [2020-10-14 03:34:16,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:34:16,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:16,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:16,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:20,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:20,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 542 [2020-10-14 03:34:20,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:34:20,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4036 [2020-10-14 03:34:20,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:20,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:20,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:34:20,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 510 [2020-10-14 03:34:20,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 03:34:20,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:20,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:34:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:20,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:20,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:20,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:34:20,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:20,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:34:20,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:20,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:20,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:34:20,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:34:20,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:34:20,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:20,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:34:20,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:20,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:20,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:20,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-14 03:34:20,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:20,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 03:34:20,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:20,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:20,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:34:20,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:34:20,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:34:20,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:20,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-14 03:34:20,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:20,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:20,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:20,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 03:34:20,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:20,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-14 03:34:20,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:20,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:20,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:34:20,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:34:20,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-14 03:34:20,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:21,139 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2020-10-14 03:34:21,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262676388] [2020-10-14 03:34:21,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:34:21,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:34:21,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348520986] [2020-10-14 03:34:21,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:34:21,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:34:21,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:34:21,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:34:21,142 INFO L87 Difference]: Start difference. First operand 21051 states and 23986 transitions. Second operand 5 states. [2020-10-14 03:34:28,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:34:28,283 INFO L93 Difference]: Finished difference Result 53694 states and 61781 transitions. [2020-10-14 03:34:28,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:34:28,285 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 530 [2020-10-14 03:34:28,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:34:28,405 INFO L225 Difference]: With dead ends: 53694 [2020-10-14 03:34:28,405 INFO L226 Difference]: Without dead ends: 32649 [2020-10-14 03:34:28,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:34:28,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32649 states. [2020-10-14 03:34:29,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32649 to 32332. [2020-10-14 03:34:29,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32332 states. [2020-10-14 03:34:29,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32332 states to 32332 states and 37158 transitions. [2020-10-14 03:34:29,388 INFO L78 Accepts]: Start accepts. Automaton has 32332 states and 37158 transitions. Word has length 530 [2020-10-14 03:34:29,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:34:29,390 INFO L479 AbstractCegarLoop]: Abstraction has 32332 states and 37158 transitions. [2020-10-14 03:34:29,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:34:29,390 INFO L276 IsEmpty]: Start isEmpty. Operand 32332 states and 37158 transitions. [2020-10-14 03:34:29,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2020-10-14 03:34:29,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:34:29,426 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:34:29,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 03:34:29,426 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:34:29,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:34:29,427 INFO L82 PathProgramCache]: Analyzing trace with hash -676901804, now seen corresponding path program 1 times [2020-10-14 03:34:29,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:34:29,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542178606] [2020-10-14 03:34:29,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:34:29,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:29,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:29,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:32,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:33,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:34,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:34,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 580 [2020-10-14 03:34:34,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:34:34,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5099 [2020-10-14 03:34:34,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:34,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:34,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:34:34,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 388 [2020-10-14 03:34:34,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-14 03:34:34,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:34,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:34:34,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:34,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:34,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:34,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:34:34,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:34,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:34:34,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:34,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:34,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:34:34,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:34:34,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:34:34,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:34,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:34:34,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:34,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:34,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:34,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-14 03:34:34,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:34,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 03:34:34,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:34,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:34,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:34:34,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:34:34,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:34:34,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:34,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-14 03:34:34,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:34,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:34,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:35,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 03:34:35,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:35,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 03:34:35,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:35,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:35,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:34:35,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:34:35,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 03:34:35,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:35,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-10-14 03:34:35,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:35,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:35,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:35,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 03:34:35,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:35,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-14 03:34:35,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:35,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:35,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:34:35,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:34:35,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-14 03:34:35,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:35,401 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 353 proven. 2 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-14 03:34:35,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542178606] [2020-10-14 03:34:35,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:34:35,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:34:35,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651019421] [2020-10-14 03:34:35,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:34:35,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:34:35,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:34:35,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:34:35,404 INFO L87 Difference]: Start difference. First operand 32332 states and 37158 transitions. Second operand 7 states. [2020-10-14 03:34:47,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:34:47,999 INFO L93 Difference]: Finished difference Result 72515 states and 83456 transitions. [2020-10-14 03:34:48,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:34:48,001 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 566 [2020-10-14 03:34:48,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:34:48,133 INFO L225 Difference]: With dead ends: 72515 [2020-10-14 03:34:48,133 INFO L226 Difference]: Without dead ends: 40189 [2020-10-14 03:34:48,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:34:48,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40189 states. [2020-10-14 03:34:48,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40189 to 36483. [2020-10-14 03:34:48,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36483 states. [2020-10-14 03:34:48,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36483 states to 36483 states and 41642 transitions. [2020-10-14 03:34:48,966 INFO L78 Accepts]: Start accepts. Automaton has 36483 states and 41642 transitions. Word has length 566 [2020-10-14 03:34:48,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:34:48,967 INFO L479 AbstractCegarLoop]: Abstraction has 36483 states and 41642 transitions. [2020-10-14 03:34:48,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:34:48,967 INFO L276 IsEmpty]: Start isEmpty. Operand 36483 states and 41642 transitions. [2020-10-14 03:34:48,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2020-10-14 03:34:48,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:34:48,993 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:34:48,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 03:34:48,993 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:34:48,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:34:48,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1550403066, now seen corresponding path program 1 times [2020-10-14 03:34:48,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:34:48,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204381700] [2020-10-14 03:34:48,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:34:49,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:49,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:50,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:50,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 584 [2020-10-14 03:34:50,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:50,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1377 [2020-10-14 03:34:50,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:50,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:50,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:34:50,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:34:50,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-14 03:34:50,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:50,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:34:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:50,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:50,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:50,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:34:50,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:50,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:34:50,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:50,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:50,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:34:50,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:34:50,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:34:50,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:50,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:34:50,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:50,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:51,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:51,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:34:51,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:51,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-14 03:34:51,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:51,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:51,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:34:51,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:34:51,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 03:34:51,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:51,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:34:51,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:51,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:51,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:51,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-14 03:34:51,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:51,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 03:34:51,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:51,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:51,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:34:51,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 166 [2020-10-14 03:34:51,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:34:51,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:51,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-14 03:34:51,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:51,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:51,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:51,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-14 03:34:51,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:51,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 03:34:51,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:51,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:51,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:34:51,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-14 03:34:51,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:34:51,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:51,942 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 75 proven. 328 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2020-10-14 03:34:51,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204381700] [2020-10-14 03:34:51,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:34:51,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:34:51,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187088049] [2020-10-14 03:34:51,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:34:51,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:34:51,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:34:51,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:34:51,945 INFO L87 Difference]: Start difference. First operand 36483 states and 41642 transitions. Second operand 7 states. [2020-10-14 03:35:02,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:35:02,234 INFO L93 Difference]: Finished difference Result 73295 states and 83654 transitions. [2020-10-14 03:35:02,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 03:35:02,236 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 570 [2020-10-14 03:35:02,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:35:02,324 INFO L225 Difference]: With dead ends: 73295 [2020-10-14 03:35:02,324 INFO L226 Difference]: Without dead ends: 36818 [2020-10-14 03:35:02,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 03:35:02,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36818 states. [2020-10-14 03:35:02,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36818 to 36806. [2020-10-14 03:35:02,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36806 states. [2020-10-14 03:35:03,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36806 states to 36806 states and 42002 transitions. [2020-10-14 03:35:03,010 INFO L78 Accepts]: Start accepts. Automaton has 36806 states and 42002 transitions. Word has length 570 [2020-10-14 03:35:03,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:35:03,010 INFO L479 AbstractCegarLoop]: Abstraction has 36806 states and 42002 transitions. [2020-10-14 03:35:03,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:35:03,011 INFO L276 IsEmpty]: Start isEmpty. Operand 36806 states and 42002 transitions. [2020-10-14 03:35:03,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2020-10-14 03:35:03,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:35:03,032 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:35:03,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 03:35:03,032 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:35:03,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:35:03,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1196689723, now seen corresponding path program 1 times [2020-10-14 03:35:03,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:35:03,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314067347] [2020-10-14 03:35:03,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:35:03,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:03,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:03,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:03,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 670 [2020-10-14 03:35:03,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:03,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 681 [2020-10-14 03:35:03,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:03,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:03,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:35:03,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-14 03:35:03,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-14 03:35:03,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:03,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:35:03,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:03,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:03,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:03,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:35:03,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:03,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:35:03,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:03,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:03,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:35:03,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:03,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:35:03,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:03,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:35:04,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:04,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:04,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:04,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 03:35:04,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:04,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-14 03:35:04,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:04,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:04,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:35:04,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:04,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-14 03:35:04,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:04,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 03:35:04,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:04,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:04,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:04,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-14 03:35:04,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:04,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 427 [2020-10-14 03:35:04,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:04,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:04,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:35:04,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:35:04,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-14 03:35:04,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:04,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2020-10-14 03:35:04,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:04,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:04,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:04,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-14 03:35:04,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:04,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 03:35:04,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:04,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:04,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:35:04,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-14 03:35:04,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:35:04,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:05,140 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 244 proven. 167 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2020-10-14 03:35:05,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314067347] [2020-10-14 03:35:05,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:35:05,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:35:05,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290845776] [2020-10-14 03:35:05,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:35:05,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:35:05,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:35:05,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:35:05,142 INFO L87 Difference]: Start difference. First operand 36806 states and 42002 transitions. Second operand 7 states. [2020-10-14 03:35:13,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:35:13,257 INFO L93 Difference]: Finished difference Result 73008 states and 83459 transitions. [2020-10-14 03:35:13,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:35:13,258 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 656 [2020-10-14 03:35:13,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:35:13,314 INFO L225 Difference]: With dead ends: 73008 [2020-10-14 03:35:13,314 INFO L226 Difference]: Without dead ends: 36515 [2020-10-14 03:35:13,351 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 03:35:13,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36515 states. [2020-10-14 03:35:14,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36515 to 36196. [2020-10-14 03:35:14,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36196 states. [2020-10-14 03:35:14,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36196 states to 36196 states and 40831 transitions. [2020-10-14 03:35:14,121 INFO L78 Accepts]: Start accepts. Automaton has 36196 states and 40831 transitions. Word has length 656 [2020-10-14 03:35:14,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:35:14,122 INFO L479 AbstractCegarLoop]: Abstraction has 36196 states and 40831 transitions. [2020-10-14 03:35:14,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:35:14,122 INFO L276 IsEmpty]: Start isEmpty. Operand 36196 states and 40831 transitions. [2020-10-14 03:35:14,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2020-10-14 03:35:14,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:35:14,138 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:35:14,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 03:35:14,139 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:35:14,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:35:14,139 INFO L82 PathProgramCache]: Analyzing trace with hash 894807407, now seen corresponding path program 1 times [2020-10-14 03:35:14,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:35:14,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623730561] [2020-10-14 03:35:14,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:35:14,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:14,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:14,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:16,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:16,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 683 [2020-10-14 03:35:16,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:35:16,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1755 [2020-10-14 03:35:16,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:16,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:16,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:35:16,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 03:35:16,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-14 03:35:16,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:16,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:35:16,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:16,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:16,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:16,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:35:16,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:16,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:35:16,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:16,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:16,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:35:16,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:16,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:35:16,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:16,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:35:16,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:16,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:16,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:16,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 03:35:16,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:16,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-14 03:35:16,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:16,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:16,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:35:16,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:16,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 03:35:16,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:16,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 03:35:16,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:16,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:16,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:16,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 03:35:16,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:16,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-14 03:35:16,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:16,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:16,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:35:16,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:35:16,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-14 03:35:16,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:17,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-10-14 03:35:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:17,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:17,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:17,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-14 03:35:17,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:17,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 03:35:17,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:17,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:17,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:35:17,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-14 03:35:17,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:35:17,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:17,728 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 269 proven. 169 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2020-10-14 03:35:17,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623730561] [2020-10-14 03:35:17,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:35:17,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:35:17,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777275639] [2020-10-14 03:35:17,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:35:17,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:35:17,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:35:17,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:35:17,730 INFO L87 Difference]: Start difference. First operand 36196 states and 40831 transitions. Second operand 7 states. [2020-10-14 03:35:31,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:35:31,500 INFO L93 Difference]: Finished difference Result 72726 states and 82014 transitions. [2020-10-14 03:35:31,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:35:31,502 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 669 [2020-10-14 03:35:31,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:35:31,561 INFO L225 Difference]: With dead ends: 72726 [2020-10-14 03:35:31,561 INFO L226 Difference]: Without dead ends: 36843 [2020-10-14 03:35:31,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:35:31,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36843 states. [2020-10-14 03:35:32,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36843 to 36508. [2020-10-14 03:35:32,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36508 states. [2020-10-14 03:35:32,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36508 states to 36508 states and 41142 transitions. [2020-10-14 03:35:32,123 INFO L78 Accepts]: Start accepts. Automaton has 36508 states and 41142 transitions. Word has length 669 [2020-10-14 03:35:32,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:35:32,124 INFO L479 AbstractCegarLoop]: Abstraction has 36508 states and 41142 transitions. [2020-10-14 03:35:32,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:35:32,125 INFO L276 IsEmpty]: Start isEmpty. Operand 36508 states and 41142 transitions. [2020-10-14 03:35:32,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 682 [2020-10-14 03:35:32,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:35:32,151 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:35:32,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 03:35:32,152 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:35:32,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:35:32,153 INFO L82 PathProgramCache]: Analyzing trace with hash -485834713, now seen corresponding path program 1 times [2020-10-14 03:35:32,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:35:32,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196571037] [2020-10-14 03:35:32,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:35:32,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:32,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:33,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:33,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 695 [2020-10-14 03:35:33,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:33,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1568 [2020-10-14 03:35:33,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:33,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:33,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:35:33,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 491 [2020-10-14 03:35:33,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-14 03:35:33,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:35:34,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:35:34,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:34,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:34,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:34,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:35:34,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:34,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:35:34,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:34,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:34,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:35:34,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:34,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:35:34,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:34,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:35:34,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:34,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:34,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:34,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 03:35:34,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:34,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 03:35:34,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:34,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:34,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:35:34,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:34,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:35:34,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:35:34,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 03:35:34,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:34,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:34,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:34,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 03:35:34,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:34,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-14 03:35:34,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:34,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:34,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:35:34,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:34,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-14 03:35:34,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:35:34,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-14 03:35:34,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:34,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:34,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:34,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-14 03:35:34,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:34,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-14 03:35:34,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:34,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:34,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:35:34,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:35:34,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-14 03:35:34,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:36,090 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 414 proven. 2 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2020-10-14 03:35:36,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196571037] [2020-10-14 03:35:36,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:35:36,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:35:36,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564876608] [2020-10-14 03:35:36,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:35:36,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:35:36,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:35:36,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:35:36,093 INFO L87 Difference]: Start difference. First operand 36508 states and 41142 transitions. Second operand 7 states. [2020-10-14 03:35:46,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:35:46,034 INFO L93 Difference]: Finished difference Result 79802 states and 90729 transitions. [2020-10-14 03:35:46,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:35:46,036 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 681 [2020-10-14 03:35:46,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:35:46,112 INFO L225 Difference]: With dead ends: 79802 [2020-10-14 03:35:46,112 INFO L226 Difference]: Without dead ends: 43607 [2020-10-14 03:35:46,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 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 03:35:46,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43607 states. [2020-10-14 03:35:46,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43607 to 40824. [2020-10-14 03:35:46,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40824 states. [2020-10-14 03:35:46,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40824 states to 40824 states and 45642 transitions. [2020-10-14 03:35:46,734 INFO L78 Accepts]: Start accepts. Automaton has 40824 states and 45642 transitions. Word has length 681 [2020-10-14 03:35:46,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:35:46,736 INFO L479 AbstractCegarLoop]: Abstraction has 40824 states and 45642 transitions. [2020-10-14 03:35:46,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:35:46,736 INFO L276 IsEmpty]: Start isEmpty. Operand 40824 states and 45642 transitions. [2020-10-14 03:35:46,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 749 [2020-10-14 03:35:46,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:35:46,764 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:35:46,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 03:35:46,765 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:35:46,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:35:46,765 INFO L82 PathProgramCache]: Analyzing trace with hash -361345272, now seen corresponding path program 1 times [2020-10-14 03:35:46,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:35:46,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660658115] [2020-10-14 03:35:46,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:35:46,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:47,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:47,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:48,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking...