/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/Problem18_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:10:03,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:10:03,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:10:03,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:10:03,530 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:10:03,539 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:10:03,541 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:10:03,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:10:03,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:10:03,550 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:10:03,550 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:10:03,551 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:10:03,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:10:03,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:10:03,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:10:03,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:10:03,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:10:03,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:10:03,562 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:10:03,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:10:03,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:10:03,576 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:10:03,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:10:03,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:10:03,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:10:03,590 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:10:03,590 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:10:03,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:10:03,596 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:10:03,597 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:10:03,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:10:03,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:10:03,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:10:03,602 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:10:03,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:10:03,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:10:03,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:10:03,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:10:03,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:10:03,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:10:03,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:10:03,612 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 04:10:03,653 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:10:03,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:10:03,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:10:03,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:10:03,656 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:10:03,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:10:03,657 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:10:03,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:10:03,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:10:03,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:10:03,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:10:03,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:10:03,659 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:10:03,659 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:10:03,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:10:03,660 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:10:03,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:10:03,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:10:03,660 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:10:03,662 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:10:03,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:10:03,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:10:03,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:10:03,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:10:03,666 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:10:03,666 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:10:03,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:10:03,666 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:10:03,667 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:10:03,667 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 04:10:03,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:10:03,980 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:10:03,983 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:10:03,985 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:10:03,985 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:10:03,986 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label00.c [2020-10-14 04:10:04,057 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2460d44cf/34f81a44a3114f3680e9ca4f92bf01a2/FLAG46904c3ef [2020-10-14 04:10:04,827 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:10:04,827 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label00.c [2020-10-14 04:10:04,854 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2460d44cf/34f81a44a3114f3680e9ca4f92bf01a2/FLAG46904c3ef [2020-10-14 04:10:04,909 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2460d44cf/34f81a44a3114f3680e9ca4f92bf01a2 [2020-10-14 04:10:04,921 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:10:04,924 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:10:04,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:10:04,928 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:10:04,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:10:04,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:10:04" (1/1) ... [2020-10-14 04:10:04,937 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20d022c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:10:04, skipping insertion in model container [2020-10-14 04:10:04,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:10:04" (1/1) ... [2020-10-14 04:10:04,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:10:05,083 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:10:06,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:10:06,532 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:10:06,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:10:07,011 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:10:07,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:10:07 WrapperNode [2020-10-14 04:10:07,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:10:07,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:10:07,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:10:07,015 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:10:07,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:10:07" (1/1) ... [2020-10-14 04:10:07,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:10:07" (1/1) ... [2020-10-14 04:10:07,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:10:07" (1/1) ... [2020-10-14 04:10:07,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:10:07" (1/1) ... [2020-10-14 04:10:07,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:10:07" (1/1) ... [2020-10-14 04:10:07,283 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:10:07" (1/1) ... [2020-10-14 04:10:07,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:10:07" (1/1) ... [2020-10-14 04:10:07,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:10:07,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:10:07,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:10:07,330 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:10:07,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:10:07" (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 04:10:07,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:10:07,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:10:07,404 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:10:07,404 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:10:07,404 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 04:10:07,405 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:10:07,405 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:10:07,406 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:10:07,406 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 04:10:07,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:10:07,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:10:07,408 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:10:07,408 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:10:07,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:10:07,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:10:13,742 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:10:13,743 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:10:13,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:10:13 BoogieIcfgContainer [2020-10-14 04:10:13,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:10:13,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:10:13,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:10:13,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:10:13,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:10:04" (1/3) ... [2020-10-14 04:10:13,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@767d01b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:10:13, skipping insertion in model container [2020-10-14 04:10:13,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:10:07" (2/3) ... [2020-10-14 04:10:13,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@767d01b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:10:13, skipping insertion in model container [2020-10-14 04:10:13,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:10:13" (3/3) ... [2020-10-14 04:10:13,775 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label00.c [2020-10-14 04:10:13,787 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:10:13,798 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:10:13,815 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:10:13,848 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:10:13,849 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:10:13,849 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:10:13,849 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:10:13,849 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:10:13,849 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:10:13,850 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:10:13,850 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:10:13,893 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-14 04:10:13,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 04:10:13,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:10:13,904 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] [2020-10-14 04:10:13,904 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:10:13,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:10:13,911 INFO L82 PathProgramCache]: Analyzing trace with hash 760323554, now seen corresponding path program 1 times [2020-10-14 04:10:13,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:10:13,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974009677] [2020-10-14 04:10:13,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:10:14,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:14,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:14,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:14,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 04:10:14,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:14,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-14 04:10:14,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:14,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:14,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:10:14,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:10:14,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 04:10:14,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:10:14,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:10:14,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:14,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:14,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:14,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:10:14,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:14,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 04:10:14,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:14,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:14,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:10:14,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:14,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:10:14,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:14,501 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 04:10:14,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974009677] [2020-10-14 04:10:14,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:10:14,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:10:14,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976404432] [2020-10-14 04:10:14,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:10:14,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:10:14,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:10:14,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:10:14,529 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 4 states. [2020-10-14 04:10:22,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:10:22,742 INFO L93 Difference]: Finished difference Result 2270 states and 4349 transitions. [2020-10-14 04:10:22,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:10:22,744 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-14 04:10:22,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:10:22,790 INFO L225 Difference]: With dead ends: 2270 [2020-10-14 04:10:22,790 INFO L226 Difference]: Without dead ends: 1432 [2020-10-14 04:10:22,803 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 04:10:22,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-10-14 04:10:22,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1425. [2020-10-14 04:10:22,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2020-10-14 04:10:22,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2331 transitions. [2020-10-14 04:10:22,972 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2331 transitions. Word has length 25 [2020-10-14 04:10:22,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:10:22,973 INFO L479 AbstractCegarLoop]: Abstraction has 1425 states and 2331 transitions. [2020-10-14 04:10:22,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:10:22,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2331 transitions. [2020-10-14 04:10:22,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-14 04:10:22,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:10:22,978 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:10:22,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:10:22,979 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:10:22,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:10:22,979 INFO L82 PathProgramCache]: Analyzing trace with hash 277822566, now seen corresponding path program 1 times [2020-10-14 04:10:22,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:10:22,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095094513] [2020-10-14 04:10:22,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:10:23,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:23,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:23,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:24,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:24,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 04:10:24,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:10:24,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 978 [2020-10-14 04:10:24,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:24,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:24,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:10:24,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 04:10:24,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 04:10:24,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:10:24,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:10:24,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:24,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:24,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:24,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:10:24,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:24,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:10:24,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:24,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:24,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:10:24,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:24,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:10:24,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:24,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:10:24,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:24,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:24,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:24,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 04:10:24,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:24,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 04:10:24,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:24,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:24,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:10:24,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:24,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 04:10:24,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:10:24,323 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:10:24,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095094513] [2020-10-14 04:10:24,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:10:24,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 04:10:24,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023720262] [2020-10-14 04:10:24,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:10:24,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:10:24,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:10:24,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:10:24,331 INFO L87 Difference]: Start difference. First operand 1425 states and 2331 transitions. Second operand 6 states. [2020-10-14 04:10:38,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:10:38,448 INFO L93 Difference]: Finished difference Result 5709 states and 9469 transitions. [2020-10-14 04:10:38,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:10:38,449 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2020-10-14 04:10:38,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:10:38,476 INFO L225 Difference]: With dead ends: 5709 [2020-10-14 04:10:38,476 INFO L226 Difference]: Without dead ends: 4290 [2020-10-14 04:10:38,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 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 04:10:38,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4290 states. [2020-10-14 04:10:38,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4290 to 4278. [2020-10-14 04:10:38,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4278 states. [2020-10-14 04:10:38,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4278 states to 4278 states and 6520 transitions. [2020-10-14 04:10:38,621 INFO L78 Accepts]: Start accepts. Automaton has 4278 states and 6520 transitions. Word has length 95 [2020-10-14 04:10:38,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:10:38,624 INFO L479 AbstractCegarLoop]: Abstraction has 4278 states and 6520 transitions. [2020-10-14 04:10:38,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:10:38,625 INFO L276 IsEmpty]: Start isEmpty. Operand 4278 states and 6520 transitions. [2020-10-14 04:10:38,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 04:10:38,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:10:38,634 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:10:38,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:10:38,635 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:10:38,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:10:38,635 INFO L82 PathProgramCache]: Analyzing trace with hash 425980331, now seen corresponding path program 1 times [2020-10-14 04:10:38,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:10:38,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739139689] [2020-10-14 04:10:38,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:10:38,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:38,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:38,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:39,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:39,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 04:10:39,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:10:39,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 525 [2020-10-14 04:10:39,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:39,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:39,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:10:39,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 04:10:39,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 04:10:39,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:39,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:10:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:39,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:39,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:39,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:10:39,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:39,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:10:39,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:39,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:39,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:10:39,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:39,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:10:39,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:39,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:10:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:39,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:39,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:39,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:10:39,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:39,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 04:10:39,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:39,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:39,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:10:39,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:39,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:10:39,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:39,415 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:10:39,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739139689] [2020-10-14 04:10:39,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:10:39,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 04:10:39,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939581560] [2020-10-14 04:10:39,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:10:39,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:10:39,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:10:39,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:10:39,418 INFO L87 Difference]: Start difference. First operand 4278 states and 6520 transitions. Second operand 6 states. [2020-10-14 04:10:49,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:10:49,875 INFO L93 Difference]: Finished difference Result 12815 states and 19831 transitions. [2020-10-14 04:10:49,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:10:49,877 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2020-10-14 04:10:49,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:10:49,926 INFO L225 Difference]: With dead ends: 12815 [2020-10-14 04:10:49,926 INFO L226 Difference]: Without dead ends: 8543 [2020-10-14 04:10:49,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:10:49,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8543 states. [2020-10-14 04:10:50,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8543 to 8535. [2020-10-14 04:10:50,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8535 states. [2020-10-14 04:10:50,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8535 states to 8535 states and 12691 transitions. [2020-10-14 04:10:50,253 INFO L78 Accepts]: Start accepts. Automaton has 8535 states and 12691 transitions. Word has length 96 [2020-10-14 04:10:50,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:10:50,254 INFO L479 AbstractCegarLoop]: Abstraction has 8535 states and 12691 transitions. [2020-10-14 04:10:50,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:10:50,254 INFO L276 IsEmpty]: Start isEmpty. Operand 8535 states and 12691 transitions. [2020-10-14 04:10:50,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2020-10-14 04:10:50,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:10:50,284 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:10:50,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:10:50,284 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:10:50,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:10:50,285 INFO L82 PathProgramCache]: Analyzing trace with hash -167440247, now seen corresponding path program 1 times [2020-10-14 04:10:50,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:10:50,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827892348] [2020-10-14 04:10:50,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:10:50,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:50,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:51,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:51,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:54,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:54,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 441 [2020-10-14 04:10:54,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:10:54,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3734 [2020-10-14 04:10:54,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:54,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:54,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:10:54,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 413 [2020-10-14 04:10:54,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 04:10:54,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:54,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:10:54,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:54,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:54,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:54,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:10:54,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:54,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:10:54,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:54,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:54,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:10:54,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:54,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:10:54,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:54,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:10:54,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:54,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:54,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:54,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 407 [2020-10-14 04:10:54,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:54,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-10-14 04:10:54,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:54,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:54,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:10:54,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:54,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 398 [2020-10-14 04:10:54,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:54,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 04:10:54,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:54,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:54,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:54,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 04:10:54,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:54,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 04:10:54,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:54,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:54,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:10:54,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:54,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 04:10:54,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:55,293 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:10:55,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827892348] [2020-10-14 04:10:55,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:10:55,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:10:55,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362266926] [2020-10-14 04:10:55,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:10:55,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:10:55,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:10:55,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:10:55,300 INFO L87 Difference]: Start difference. First operand 8535 states and 12691 transitions. Second operand 5 states. [2020-10-14 04:11:05,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:11:05,482 INFO L93 Difference]: Finished difference Result 21323 states and 32881 transitions. [2020-10-14 04:11:05,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:11:05,483 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 429 [2020-10-14 04:11:05,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:11:05,546 INFO L225 Difference]: With dead ends: 21323 [2020-10-14 04:11:05,546 INFO L226 Difference]: Without dead ends: 12794 [2020-10-14 04:11:05,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 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 04:11:05,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12794 states. [2020-10-14 04:11:05,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12794 to 9978. [2020-10-14 04:11:05,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9978 states. [2020-10-14 04:11:05,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9978 states to 9978 states and 14492 transitions. [2020-10-14 04:11:05,848 INFO L78 Accepts]: Start accepts. Automaton has 9978 states and 14492 transitions. Word has length 429 [2020-10-14 04:11:05,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:11:05,849 INFO L479 AbstractCegarLoop]: Abstraction has 9978 states and 14492 transitions. [2020-10-14 04:11:05,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:11:05,849 INFO L276 IsEmpty]: Start isEmpty. Operand 9978 states and 14492 transitions. [2020-10-14 04:11:05,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2020-10-14 04:11:05,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:11:05,877 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:11:05,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:11:05,878 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:11:05,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:11:05,879 INFO L82 PathProgramCache]: Analyzing trace with hash 612164973, now seen corresponding path program 1 times [2020-10-14 04:11:05,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:11:05,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105659116] [2020-10-14 04:11:05,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:11:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:05,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:06,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:07,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:10,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:10,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 505 [2020-10-14 04:11:10,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:11:10,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-14 04:11:10,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:10,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:10,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:11:10,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 477 [2020-10-14 04:11:10,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 04:11:10,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:11:11,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:11:11,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:11,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:11,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:11,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:11:11,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:11,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:11:11,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:11,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:11,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:11:11,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:11:11,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:11:11,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:11:11,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:11:11,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:11,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:11,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:11,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:11:11,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:11,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 04:11:11,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:11,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:11,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:11:11,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:11:11,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:11:11,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:11:11,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 04:11:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:11,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:11,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:11,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 395 [2020-10-14 04:11:11,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:11,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 401 [2020-10-14 04:11:11,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:11,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:11,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:11:11,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:11:11,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 386 [2020-10-14 04:11:11,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:11:11,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 04:11:11,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:11,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:12,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:12,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 04:11:12,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:12,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-14 04:11:12,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:12,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:12,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:11:12,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:11:12,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 04:11:12,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:11:12,629 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-14 04:11:12,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105659116] [2020-10-14 04:11:12,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:11:12,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 04:11:12,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749247341] [2020-10-14 04:11:12,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:11:12,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:11:12,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:11:12,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:11:12,635 INFO L87 Difference]: Start difference. First operand 9978 states and 14492 transitions. Second operand 6 states. [2020-10-14 04:11:25,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:11:25,201 INFO L93 Difference]: Finished difference Result 24209 states and 36705 transitions. [2020-10-14 04:11:25,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:11:25,203 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 491 [2020-10-14 04:11:25,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:11:25,251 INFO L225 Difference]: With dead ends: 24209 [2020-10-14 04:11:25,251 INFO L226 Difference]: Without dead ends: 14237 [2020-10-14 04:11:25,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 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 04:11:25,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14237 states. [2020-10-14 04:11:25,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14237 to 14229. [2020-10-14 04:11:25,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14229 states. [2020-10-14 04:11:25,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14229 states to 14229 states and 20844 transitions. [2020-10-14 04:11:25,578 INFO L78 Accepts]: Start accepts. Automaton has 14229 states and 20844 transitions. Word has length 491 [2020-10-14 04:11:25,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:11:25,580 INFO L479 AbstractCegarLoop]: Abstraction has 14229 states and 20844 transitions. [2020-10-14 04:11:25,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:11:25,580 INFO L276 IsEmpty]: Start isEmpty. Operand 14229 states and 20844 transitions. [2020-10-14 04:11:25,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2020-10-14 04:11:25,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:11:25,623 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:11:25,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:11:25,624 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:11:25,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:11:25,624 INFO L82 PathProgramCache]: Analyzing trace with hash -826580599, now seen corresponding path program 1 times [2020-10-14 04:11:25,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:11:25,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227323401] [2020-10-14 04:11:25,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:11:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:25,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:26,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:27,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:29,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:29,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 587 [2020-10-14 04:11:29,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:11:29,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4022 [2020-10-14 04:11:29,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:29,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:29,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:11:29,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 556 [2020-10-14 04:11:29,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 04:11:29,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:11:29,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:11:29,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:29,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:29,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:29,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:11:29,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:29,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:11:29,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:29,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:29,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:11:29,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:11:29,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:11:29,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:11:30,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:11:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:30,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:30,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:30,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 553 [2020-10-14 04:11:30,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:30,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 607 [2020-10-14 04:11:30,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:30,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:30,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:11:30,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:11:30,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 541 [2020-10-14 04:11:30,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:11:30,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 04:11:30,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:31,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:31,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:31,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-14 04:11:31,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:31,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-14 04:11:31,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:31,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:31,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:11:31,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:11:31,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 256 [2020-10-14 04:11:31,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:11:31,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 04:11:31,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:31,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:31,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:31,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 04:11:31,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:31,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 04:11:31,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:31,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:31,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:11:31,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:11:31,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 04:11:31,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:11:32,048 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:11:32,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227323401] [2020-10-14 04:11:32,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:11:32,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:11:32,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194769690] [2020-10-14 04:11:32,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:11:32,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:11:32,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:11:32,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:11:32,052 INFO L87 Difference]: Start difference. First operand 14229 states and 20844 transitions. Second operand 5 states. [2020-10-14 04:11:45,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:11:45,614 INFO L93 Difference]: Finished difference Result 41931 states and 63027 transitions. [2020-10-14 04:11:45,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:11:45,615 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 573 [2020-10-14 04:11:45,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:11:45,734 INFO L225 Difference]: With dead ends: 41931 [2020-10-14 04:11:45,734 INFO L226 Difference]: Without dead ends: 27708 [2020-10-14 04:11:45,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 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 04:11:45,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27708 states. [2020-10-14 04:11:46,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27708 to 27700. [2020-10-14 04:11:46,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27700 states. [2020-10-14 04:11:46,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27700 states to 27700 states and 39097 transitions. [2020-10-14 04:11:46,403 INFO L78 Accepts]: Start accepts. Automaton has 27700 states and 39097 transitions. Word has length 573 [2020-10-14 04:11:46,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:11:46,404 INFO L479 AbstractCegarLoop]: Abstraction has 27700 states and 39097 transitions. [2020-10-14 04:11:46,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:11:46,405 INFO L276 IsEmpty]: Start isEmpty. Operand 27700 states and 39097 transitions. [2020-10-14 04:11:46,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2020-10-14 04:11:46,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:11:46,462 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:11:46,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:11:46,462 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:11:46,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:11:46,463 INFO L82 PathProgramCache]: Analyzing trace with hash 501461145, now seen corresponding path program 1 times [2020-10-14 04:11:46,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:11:46,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786267339] [2020-10-14 04:11:46,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:11:46,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:46,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:47,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:51,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:51,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 595 [2020-10-14 04:11:51,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:11:51,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 04:11:51,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:51,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:51,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 04:11:51,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:11:51,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 560 [2020-10-14 04:11:51,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:11:51,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:11:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:51,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:51,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:51,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:11:51,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:51,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 04:11:51,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:51,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:51,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:11:51,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:11:51,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:11:51,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:11:51,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:11:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:52,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:53,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:53,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 561 [2020-10-14 04:11:53,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:53,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1068 [2020-10-14 04:11:53,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:53,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:53,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 04:11:53,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:11:53,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 561 [2020-10-14 04:11:53,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:11:53,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 04:11:53,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:53,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:53,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:53,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-14 04:11:53,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:53,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 597 [2020-10-14 04:11:53,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:53,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:53,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:11:53,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:11:53,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 273 [2020-10-14 04:11:53,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 04:11:54,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 04:11:54,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:54,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:54,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:54,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 04:11:54,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:54,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 04:11:54,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:54,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:54,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:11:54,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:11:54,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 04:11:54,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:11:55,296 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:11:55,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786267339] [2020-10-14 04:11:55,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:11:55,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 04:11:55,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204322788] [2020-10-14 04:11:55,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 04:11:55,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:11:55,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 04:11:55,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:11:55,299 INFO L87 Difference]: Start difference. First operand 27700 states and 39097 transitions. Second operand 10 states. [2020-10-14 04:12:15,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:12:15,645 INFO L93 Difference]: Finished difference Result 69058 states and 98300 transitions. [2020-10-14 04:12:15,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 04:12:15,647 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 581 [2020-10-14 04:12:15,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:12:15,814 INFO L225 Difference]: With dead ends: 69058 [2020-10-14 04:12:15,814 INFO L226 Difference]: Without dead ends: 38521 [2020-10-14 04:12:15,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2020-10-14 04:12:15,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38521 states. [2020-10-14 04:12:16,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38521 to 30757. [2020-10-14 04:12:16,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30757 states. [2020-10-14 04:12:16,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30757 states to 30757 states and 39987 transitions. [2020-10-14 04:12:16,567 INFO L78 Accepts]: Start accepts. Automaton has 30757 states and 39987 transitions. Word has length 581 [2020-10-14 04:12:16,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:12:16,570 INFO L479 AbstractCegarLoop]: Abstraction has 30757 states and 39987 transitions. [2020-10-14 04:12:16,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 04:12:16,570 INFO L276 IsEmpty]: Start isEmpty. Operand 30757 states and 39987 transitions. [2020-10-14 04:12:16,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 726 [2020-10-14 04:12:16,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:12:16,664 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:12:16,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:12:16,665 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:12:16,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:12:16,665 INFO L82 PathProgramCache]: Analyzing trace with hash 921413021, now seen corresponding path program 1 times [2020-10-14 04:12:16,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:12:16,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246264453] [2020-10-14 04:12:16,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:12:16,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:17,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:17,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:21,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:21,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 743 [2020-10-14 04:12:21,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:12:21,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-14 04:12:21,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:21,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:21,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:12:21,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:12:21,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 04:12:21,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:12:21,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:12:21,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:21,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:21,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:21,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:12:21,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:12:21,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:12:21,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:21,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:21,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:12:21,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:12:21,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:12:21,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:12:21,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:12:21,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:21,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:21,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:21,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:12:21,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:12:21,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 04:12:21,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:21,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:21,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:12:21,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:12:21,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 04:12:21,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:12:22,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 04:12:22,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:22,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:22,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:22,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:12:22,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:12:22,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 04:12:22,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:22,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:22,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:12:22,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-14 04:12:22,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:12:22,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:12:22,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-14 04:12:22,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:22,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:22,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:22,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 561 [2020-10-14 04:12:22,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:12:22,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-14 04:12:22,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:22,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:22,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:12:22,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 558 [2020-10-14 04:12:22,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:12:22,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:12:22,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 04:12:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:22,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:22,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:22,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-14 04:12:22,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:12:22,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 04:12:22,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:22,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:22,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:12:22,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:12:22,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:12:22,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:12:22,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 04:12:22,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:22,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:22,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:22,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 04:12:22,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:12:22,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 04:12:22,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:22,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:22,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:12:22,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:12:22,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:12:22,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:12:23,096 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 54 proven. 132 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-14 04:12:23,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246264453] [2020-10-14 04:12:23,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:12:23,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:12:23,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756134309] [2020-10-14 04:12:23,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:12:23,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:12:23,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:12:23,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:12:23,099 INFO L87 Difference]: Start difference. First operand 30757 states and 39987 transitions. Second operand 7 states. [2020-10-14 04:12:38,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:12:38,803 INFO L93 Difference]: Finished difference Result 67159 states and 92219 transitions. [2020-10-14 04:12:38,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:12:38,805 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 725 [2020-10-14 04:12:38,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:12:39,004 INFO L225 Difference]: With dead ends: 67159 [2020-10-14 04:12:39,005 INFO L226 Difference]: Without dead ends: 36408 [2020-10-14 04:12:39,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:12:39,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36408 states. [2020-10-14 04:12:39,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36408 to 35902. [2020-10-14 04:12:39,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35902 states. [2020-10-14 04:12:40,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35902 states to 35902 states and 45721 transitions. [2020-10-14 04:12:40,001 INFO L78 Accepts]: Start accepts. Automaton has 35902 states and 45721 transitions. Word has length 725 [2020-10-14 04:12:40,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:12:40,002 INFO L479 AbstractCegarLoop]: Abstraction has 35902 states and 45721 transitions. [2020-10-14 04:12:40,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:12:40,002 INFO L276 IsEmpty]: Start isEmpty. Operand 35902 states and 45721 transitions. [2020-10-14 04:12:40,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 777 [2020-10-14 04:12:40,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:12:40,044 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:12:40,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:12:40,045 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:12:40,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:12:40,045 INFO L82 PathProgramCache]: Analyzing trace with hash 820011034, now seen corresponding path program 1 times [2020-10-14 04:12:40,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:12:40,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813503747] [2020-10-14 04:12:40,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:12:40,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:40,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:40,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:40,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:45,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:45,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 794 [2020-10-14 04:12:45,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:12:45,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 04:12:45,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:45,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:45,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:12:45,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 04:12:45,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 04:12:45,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:12:45,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:12:45,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:45,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:45,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:45,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:12:45,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:12:45,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:12:45,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:45,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:45,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:12:45,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:12:45,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:12:45,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:12:45,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:12:45,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:45,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:45,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:45,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:12:45,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:12:45,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 04:12:45,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:45,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:45,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:12:45,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:12:45,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 04:12:45,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:12:45,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:12:45,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:45,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:45,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:45,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:12:45,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:12:45,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 04:12:45,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:45,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:45,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:12:45,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:12:45,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 04:12:45,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:12:45,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-14 04:12:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:45,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:45,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:45,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 561 [2020-10-14 04:12:45,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:12:45,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-14 04:12:45,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:45,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:45,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:12:45,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 558 [2020-10-14 04:12:45,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:12:45,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:12:45,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 04:12:45,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:45,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:45,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:45,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-14 04:12:45,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:12:45,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 04:12:45,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:45,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:45,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:12:45,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:12:45,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:12:45,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:12:46,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 04:12:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:12:46,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:12:46,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:12:46,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 04:12:46,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:12:46,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 04:12:46,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:12:46,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:12:46,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:12:46,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:12:46,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:12:46,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:12:46,473 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 128 proven. 72 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-10-14 04:12:46,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813503747] [2020-10-14 04:12:46,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:12:46,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:12:46,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036048847] [2020-10-14 04:12:46,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:12:46,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:12:46,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:12:46,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:12:46,477 INFO L87 Difference]: Start difference. First operand 35902 states and 45721 transitions. Second operand 7 states. [2020-10-14 04:13:02,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:13:02,740 INFO L93 Difference]: Finished difference Result 74702 states and 94935 transitions. [2020-10-14 04:13:02,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:13:02,742 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 776 [2020-10-14 04:13:02,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:13:02,895 INFO L225 Difference]: With dead ends: 74702 [2020-10-14 04:13:02,895 INFO L226 Difference]: Without dead ends: 35919 [2020-10-14 04:13:02,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:13:03,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35919 states. [2020-10-14 04:13:03,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35919 to 34490. [2020-10-14 04:13:03,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34490 states. [2020-10-14 04:13:03,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34490 states to 34490 states and 38119 transitions. [2020-10-14 04:13:03,581 INFO L78 Accepts]: Start accepts. Automaton has 34490 states and 38119 transitions. Word has length 776 [2020-10-14 04:13:03,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:13:03,582 INFO L479 AbstractCegarLoop]: Abstraction has 34490 states and 38119 transitions. [2020-10-14 04:13:03,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:13:03,582 INFO L276 IsEmpty]: Start isEmpty. Operand 34490 states and 38119 transitions. [2020-10-14 04:13:03,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 810 [2020-10-14 04:13:03,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:13:03,629 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:13:03,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:13:03,630 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:13:03,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:13:03,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1098683695, now seen corresponding path program 1 times [2020-10-14 04:13:03,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:13:03,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359063981] [2020-10-14 04:13:03,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:13:03,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:03,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:04,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:04,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:08,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:08,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 827 [2020-10-14 04:13:08,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:13:08,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-14 04:13:08,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:08,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:08,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:13:08,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-14 04:13:08,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 04:13:08,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:13:08,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:13:08,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:08,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:08,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:08,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:13:08,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:08,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:13:08,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:08,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:08,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:13:08,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:13:08,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:13:08,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:13:08,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:13:08,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:08,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:09,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:09,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 04:13:09,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:09,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 04:13:09,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:09,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:09,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:13:09,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:13:09,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 04:13:09,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:13:09,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 04:13:09,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:09,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:09,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:09,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 04:13:09,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:09,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-14 04:13:09,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:09,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:09,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:13:09,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:13:09,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 04:13:09,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:13:09,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-14 04:13:09,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:09,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:09,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:09,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 561 [2020-10-14 04:13:09,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:09,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-14 04:13:09,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:09,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:09,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:13:09,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 558 [2020-10-14 04:13:09,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:13:09,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:13:09,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 04:13:09,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:09,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:09,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:09,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-14 04:13:09,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:09,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 04:13:09,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:09,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:09,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:13:09,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:13:09,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:13:09,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:13:09,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 04:13:09,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:09,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:09,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:09,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 04:13:09,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:09,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 04:13:09,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:09,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:09,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:13:09,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:13:09,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:13:09,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:13:10,409 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 161 proven. 105 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-10-14 04:13:10,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359063981] [2020-10-14 04:13:10,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:13:10,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:13:10,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309540773] [2020-10-14 04:13:10,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:13:10,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:13:10,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:13:10,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:13:10,413 INFO L87 Difference]: Start difference. First operand 34490 states and 38119 transitions. Second operand 7 states. [2020-10-14 04:13:21,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:13:21,518 INFO L93 Difference]: Finished difference Result 83011 states and 94704 transitions. [2020-10-14 04:13:21,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:13:21,521 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 809 [2020-10-14 04:13:21,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:13:21,722 INFO L225 Difference]: With dead ends: 83011 [2020-10-14 04:13:21,723 INFO L226 Difference]: Without dead ends: 48527 [2020-10-14 04:13:21,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 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 04:13:21,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48527 states. [2020-10-14 04:13:22,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48527 to 48239. [2020-10-14 04:13:22,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48239 states. [2020-10-14 04:13:22,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48239 states to 48239 states and 53026 transitions. [2020-10-14 04:13:22,787 INFO L78 Accepts]: Start accepts. Automaton has 48239 states and 53026 transitions. Word has length 809 [2020-10-14 04:13:22,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:13:22,788 INFO L479 AbstractCegarLoop]: Abstraction has 48239 states and 53026 transitions. [2020-10-14 04:13:22,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:13:22,789 INFO L276 IsEmpty]: Start isEmpty. Operand 48239 states and 53026 transitions. [2020-10-14 04:13:22,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 986 [2020-10-14 04:13:22,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:13:22,885 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:13:22,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:13:22,886 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:13:22,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:13:22,886 INFO L82 PathProgramCache]: Analyzing trace with hash -2033034115, now seen corresponding path program 1 times [2020-10-14 04:13:22,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:13:22,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1007572656] [2020-10-14 04:13:22,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:13:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:23,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:23,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:26,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:28,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:28,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1005 [2020-10-14 04:13:28,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:13:28,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 04:13:28,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:28,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:28,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:13:28,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 173 [2020-10-14 04:13:28,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 246 [2020-10-14 04:13:28,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:13:28,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:13:28,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:28,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:28,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:28,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:13:28,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:28,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:13:28,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:28,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:28,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:13:28,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:13:28,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:13:28,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:13:28,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:13:28,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:28,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:28,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:28,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 04:13:28,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:28,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 04:13:28,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:28,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:28,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:13:28,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:13:28,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:13:28,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:13:28,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-14 04:13:28,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:28,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:28,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:28,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:13:28,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:28,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 04:13:28,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:28,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:28,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:13:28,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:13:28,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:13:28,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:13:28,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-14 04:13:28,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:28,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:28,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:28,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 04:13:28,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:28,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-14 04:13:28,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:28,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:28,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:13:28,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:13:28,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-14 04:13:28,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:13:28,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-14 04:13:29,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:29,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:29,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:29,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 561 [2020-10-14 04:13:29,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:29,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-14 04:13:29,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:29,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:29,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:13:29,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 558 [2020-10-14 04:13:29,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:13:29,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:13:29,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 04:13:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:29,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:29,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:29,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-14 04:13:29,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:29,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 04:13:29,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:29,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:29,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:13:29,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:13:29,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:13:29,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:13:29,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 04:13:29,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:13:29,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:13:29,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:13:29,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 04:13:29,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:13:29,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 04:13:29,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:13:29,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:13:29,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:13:29,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:13:29,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:13:29,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:13:30,322 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 240 proven. 242 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2020-10-14 04:13:30,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1007572656] [2020-10-14 04:13:30,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:13:30,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:13:30,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345952247] [2020-10-14 04:13:30,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:13:30,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:13:30,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:13:30,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:13:30,328 INFO L87 Difference]: Start difference. First operand 48239 states and 53026 transitions. Second operand 8 states. [2020-10-14 04:13:44,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:13:44,691 INFO L93 Difference]: Finished difference Result 113585 states and 125938 transitions. [2020-10-14 04:13:44,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 04:13:44,692 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 985 [2020-10-14 04:13:44,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:13:44,872 INFO L225 Difference]: With dead ends: 113585 [2020-10-14 04:13:44,873 INFO L226 Difference]: Without dead ends: 65352 [2020-10-14 04:13:44,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210