/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/heavy-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 00:08:47,879 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 00:08:47,882 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 00:08:47,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 00:08:47,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 00:08:47,908 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 00:08:47,909 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 00:08:47,911 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 00:08:47,913 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 00:08:47,914 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 00:08:47,915 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 00:08:47,916 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 00:08:47,916 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 00:08:47,917 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 00:08:47,918 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 00:08:47,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 00:08:47,920 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 00:08:47,921 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 00:08:47,923 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 00:08:47,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 00:08:47,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 00:08:47,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 00:08:47,933 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 00:08:47,936 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 00:08:47,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 00:08:47,940 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 00:08:47,941 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 00:08:47,944 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 00:08:47,946 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 00:08:47,947 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 00:08:47,948 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 00:08:47,948 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 00:08:47,949 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 00:08:47,950 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 00:08:47,953 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 00:08:47,953 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 00:08:47,954 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 00:08:47,955 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 00:08:47,955 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 00:08:47,956 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 00:08:47,956 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 00:08:47,958 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 [2020-10-15 00:08:48,006 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 00:08:48,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 00:08:48,011 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 00:08:48,012 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 00:08:48,012 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 00:08:48,012 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 00:08:48,012 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 00:08:48,012 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 00:08:48,013 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 00:08:48,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 00:08:48,013 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 00:08:48,013 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 00:08:48,013 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 00:08:48,013 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 00:08:48,014 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 00:08:48,014 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 00:08:48,017 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 00:08:48,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 00:08:48,018 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 00:08:48,018 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 00:08:48,018 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 00:08:48,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 00:08:48,018 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 00:08:48,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 00:08:48,019 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 00:08:48,020 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 00:08:48,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 00:08:48,020 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 00:08:48,021 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 00:08:48,021 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 00:08:48,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 00:08:48,361 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 00:08:48,365 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 00:08:48,367 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 00:08:48,367 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 00:08:48,368 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/heavy-1.c [2020-10-15 00:08:48,431 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d22549563/a8cf49a48ed447e595f4df00bcdb5618/FLAG06f1a1fec [2020-10-15 00:08:48,857 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 00:08:48,857 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/heavy-1.c [2020-10-15 00:08:48,863 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d22549563/a8cf49a48ed447e595f4df00bcdb5618/FLAG06f1a1fec [2020-10-15 00:08:49,271 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d22549563/a8cf49a48ed447e595f4df00bcdb5618 [2020-10-15 00:08:49,279 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 00:08:49,281 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 00:08:49,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 00:08:49,283 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 00:08:49,287 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 00:08:49,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:08:49" (1/1) ... [2020-10-15 00:08:49,291 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4572a173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:49, skipping insertion in model container [2020-10-15 00:08:49,291 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:08:49" (1/1) ... [2020-10-15 00:08:49,299 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 00:08:49,318 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 00:08:49,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 00:08:49,644 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 00:08:49,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 00:08:49,853 INFO L208 MainTranslator]: Completed translation [2020-10-15 00:08:49,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:49 WrapperNode [2020-10-15 00:08:49,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 00:08:49,855 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 00:08:49,855 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 00:08:49,855 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 00:08:49,871 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:49" (1/1) ... [2020-10-15 00:08:49,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:49" (1/1) ... [2020-10-15 00:08:49,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:49" (1/1) ... [2020-10-15 00:08:49,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:49" (1/1) ... [2020-10-15 00:08:49,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:49" (1/1) ... [2020-10-15 00:08:49,917 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:49" (1/1) ... [2020-10-15 00:08:49,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:49" (1/1) ... [2020-10-15 00:08:49,927 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 00:08:49,928 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 00:08:49,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 00:08:49,929 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 00:08:49,930 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:49" (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 [2020-10-15 00:08:50,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 00:08:50,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 00:08:50,017 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 00:08:50,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 00:08:50,017 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 00:08:50,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 00:08:50,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 00:08:50,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 00:08:50,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 00:08:50,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-10-15 00:08:50,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 00:08:50,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 00:08:50,264 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 00:08:50,264 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-15 00:08:50,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:08:50 BoogieIcfgContainer [2020-10-15 00:08:50,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 00:08:50,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 00:08:50,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 00:08:50,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 00:08:50,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:08:49" (1/3) ... [2020-10-15 00:08:50,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a5940c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:08:50, skipping insertion in model container [2020-10-15 00:08:50,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:08:49" (2/3) ... [2020-10-15 00:08:50,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a5940c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:08:50, skipping insertion in model container [2020-10-15 00:08:50,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:08:50" (3/3) ... [2020-10-15 00:08:50,278 INFO L109 eAbstractionObserver]: Analyzing ICFG heavy-1.c [2020-10-15 00:08:50,290 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 00:08:50,311 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 00:08:50,337 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 00:08:50,362 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 00:08:50,362 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 00:08:50,362 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 00:08:50,362 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 00:08:50,363 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 00:08:50,365 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 00:08:50,365 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 00:08:50,365 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 00:08:50,388 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-15 00:08:50,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 00:08:50,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:50,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:08:50,394 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:50,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:50,400 INFO L82 PathProgramCache]: Analyzing trace with hash 242978043, now seen corresponding path program 1 times [2020-10-15 00:08:50,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:50,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201142708] [2020-10-15 00:08:50,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:50,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:50,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:50,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-15 00:08:50,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:50,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-15 00:08:50,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:50,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:50,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:50,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 00:08:50,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:50,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 00:08:50,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:50,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:50,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:50,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:50,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:50,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:50,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 00:08:50,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:50,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:50,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:50,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:50,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:50,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:50,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:50,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201142708] [2020-10-15 00:08:50,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:08:50,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 00:08:50,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064372207] [2020-10-15 00:08:50,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 00:08:50,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:50,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 00:08:50,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 00:08:50,749 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2020-10-15 00:08:50,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:50,846 INFO L93 Difference]: Finished difference Result 42 states and 61 transitions. [2020-10-15 00:08:50,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 00:08:50,848 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-15 00:08:50,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:50,858 INFO L225 Difference]: With dead ends: 42 [2020-10-15 00:08:50,858 INFO L226 Difference]: Without dead ends: 23 [2020-10-15 00:08:50,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 00:08:50,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-15 00:08:50,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 15. [2020-10-15 00:08:50,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-15 00:08:50,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2020-10-15 00:08:50,901 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 9 [2020-10-15 00:08:50,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:50,901 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-10-15 00:08:50,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 00:08:50,902 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-10-15 00:08:50,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 00:08:50,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:50,903 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:08:50,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 00:08:50,903 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:50,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:50,904 INFO L82 PathProgramCache]: Analyzing trace with hash 242949213, now seen corresponding path program 1 times [2020-10-15 00:08:50,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:50,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985483464] [2020-10-15 00:08:50,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:50,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:51,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:51,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-15 00:08:51,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:51,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-15 00:08:51,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:51,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:51,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:08:51,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 00:08:51,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:08:51,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:51,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:51,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:51,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:51,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:51,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:51,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:51,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 00:08:51,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:51,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:51,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:51,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:51,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:51,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-15 00:08:51,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:51,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985483464] [2020-10-15 00:08:51,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:08:51,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 00:08:51,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598723743] [2020-10-15 00:08:51,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 00:08:51,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:51,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 00:08:51,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 00:08:51,127 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 4 states. [2020-10-15 00:08:51,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:51,241 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2020-10-15 00:08:51,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 00:08:51,242 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-15 00:08:51,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:51,243 INFO L225 Difference]: With dead ends: 36 [2020-10-15 00:08:51,244 INFO L226 Difference]: Without dead ends: 33 [2020-10-15 00:08:51,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:08:51,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-15 00:08:51,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 16. [2020-10-15 00:08:51,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-15 00:08:51,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-10-15 00:08:51,252 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 9 [2020-10-15 00:08:51,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:51,253 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-10-15 00:08:51,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 00:08:51,253 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-10-15 00:08:51,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 00:08:51,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:51,254 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:08:51,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 00:08:51,254 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:51,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:51,255 INFO L82 PathProgramCache]: Analyzing trace with hash 713101374, now seen corresponding path program 1 times [2020-10-15 00:08:51,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:51,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209310244] [2020-10-15 00:08:51,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:51,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:51,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:51,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:51,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:51,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:08:51,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:08:51,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-15 00:08:51,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:51,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:51,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:08:51,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 00:08:51,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:08:51,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 00:08:51,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:51,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:51,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:51,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:51,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:51,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:51,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:08:51,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:51,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:51,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:51,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:51,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:51,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:51,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:51,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209310244] [2020-10-15 00:08:51,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:51,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 00:08:51,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485808519] [2020-10-15 00:08:51,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 00:08:51,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:51,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 00:08:51,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:08:51,553 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 5 states. [2020-10-15 00:08:51,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:51,704 INFO L93 Difference]: Finished difference Result 47 states and 60 transitions. [2020-10-15 00:08:51,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 00:08:51,705 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-15 00:08:51,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:51,706 INFO L225 Difference]: With dead ends: 47 [2020-10-15 00:08:51,707 INFO L226 Difference]: Without dead ends: 44 [2020-10-15 00:08:51,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:08:51,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-15 00:08:51,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 22. [2020-10-15 00:08:51,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-15 00:08:51,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-10-15 00:08:51,729 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 12 [2020-10-15 00:08:51,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:51,729 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-10-15 00:08:51,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 00:08:51,730 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-10-15 00:08:51,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 00:08:51,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:51,731 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:08:51,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 00:08:51,731 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:51,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:51,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1127777469, now seen corresponding path program 2 times [2020-10-15 00:08:51,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:51,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526048864] [2020-10-15 00:08:51,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:51,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:51,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:51,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:51,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:52,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:52,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-15 00:08:52,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:08:52,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-10-15 00:08:52,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:52,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:52,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:08:52,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 00:08:52,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 00:08:52,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 00:08:52,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:52,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:52,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:52,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:52,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:52,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:52,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:08:52,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:52,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:52,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:52,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:52,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:52,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-15 00:08:52,218 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:52,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526048864] [2020-10-15 00:08:52,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:52,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-15 00:08:52,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635762005] [2020-10-15 00:08:52,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 00:08:52,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:52,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 00:08:52,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:08:52,225 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 6 states. [2020-10-15 00:08:52,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:52,424 INFO L93 Difference]: Finished difference Result 58 states and 75 transitions. [2020-10-15 00:08:52,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 00:08:52,425 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-15 00:08:52,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:52,426 INFO L225 Difference]: With dead ends: 58 [2020-10-15 00:08:52,426 INFO L226 Difference]: Without dead ends: 55 [2020-10-15 00:08:52,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:08:52,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-15 00:08:52,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 28. [2020-10-15 00:08:52,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-15 00:08:52,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2020-10-15 00:08:52,435 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 15 [2020-10-15 00:08:52,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:52,436 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2020-10-15 00:08:52,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 00:08:52,436 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2020-10-15 00:08:52,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-15 00:08:52,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:52,437 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:08:52,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 00:08:52,438 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:52,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:52,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1877586978, now seen corresponding path program 3 times [2020-10-15 00:08:52,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:52,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731430242] [2020-10-15 00:08:52,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:52,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:52,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:52,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:52,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:52,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:52,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:52,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-15 00:08:52,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 00:08:52,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 401 [2020-10-15 00:08:52,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:52,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:52,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:08:52,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 00:08:52,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 00:08:52,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:52,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:52,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:52,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:52,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:52,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:52,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:52,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:08:52,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:52,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:52,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:52,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:52,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:52,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:52,947 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:52,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731430242] [2020-10-15 00:08:52,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:52,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-15 00:08:52,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128987400] [2020-10-15 00:08:52,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 00:08:52,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:52,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 00:08:52,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:08:52,950 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 7 states. [2020-10-15 00:08:53,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:53,237 INFO L93 Difference]: Finished difference Result 69 states and 90 transitions. [2020-10-15 00:08:53,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 00:08:53,238 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-10-15 00:08:53,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:53,239 INFO L225 Difference]: With dead ends: 69 [2020-10-15 00:08:53,240 INFO L226 Difference]: Without dead ends: 66 [2020-10-15 00:08:53,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:08:53,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-15 00:08:53,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 34. [2020-10-15 00:08:53,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-15 00:08:53,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2020-10-15 00:08:53,250 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 18 [2020-10-15 00:08:53,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:53,251 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2020-10-15 00:08:53,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 00:08:53,252 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2020-10-15 00:08:53,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 00:08:53,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:53,253 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:08:53,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 00:08:53,253 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:53,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:53,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1801575139, now seen corresponding path program 4 times [2020-10-15 00:08:53,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:53,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302030977] [2020-10-15 00:08:53,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:53,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:53,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:53,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:53,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:53,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:54,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:54,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-15 00:08:54,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 00:08:54,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 920 [2020-10-15 00:08:54,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:54,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:54,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:08:54,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 00:08:54,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:08:54,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:54,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:54,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:54,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:54,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:54,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:54,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:54,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:08:54,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:54,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:54,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:54,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:54,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:54,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:54,301 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:54,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302030977] [2020-10-15 00:08:54,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:54,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 00:08:54,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309173279] [2020-10-15 00:08:54,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 00:08:54,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:54,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 00:08:54,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:08:54,304 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand 8 states. [2020-10-15 00:08:54,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:54,703 INFO L93 Difference]: Finished difference Result 80 states and 105 transitions. [2020-10-15 00:08:54,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 00:08:54,704 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-10-15 00:08:54,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:54,705 INFO L225 Difference]: With dead ends: 80 [2020-10-15 00:08:54,706 INFO L226 Difference]: Without dead ends: 77 [2020-10-15 00:08:54,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:08:54,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-15 00:08:54,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 40. [2020-10-15 00:08:54,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-15 00:08:54,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2020-10-15 00:08:54,716 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 21 [2020-10-15 00:08:54,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:54,717 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2020-10-15 00:08:54,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 00:08:54,717 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2020-10-15 00:08:54,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-15 00:08:54,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:54,718 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:08:54,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 00:08:54,719 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:54,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:54,719 INFO L82 PathProgramCache]: Analyzing trace with hash -780644482, now seen corresponding path program 5 times [2020-10-15 00:08:54,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:54,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925191523] [2020-10-15 00:08:54,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:54,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:54,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:54,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:54,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:54,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:54,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:55,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:56,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:56,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 00:08:56,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 00:08:56,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1347 [2020-10-15 00:08:56,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:56,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:56,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:08:56,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 00:08:56,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 00:08:56,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:56,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:56,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:56,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:56,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:56,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:56,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:56,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:08:56,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:56,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:56,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:56,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:56,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:56,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:56,202 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:56,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925191523] [2020-10-15 00:08:56,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:56,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 00:08:56,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166266096] [2020-10-15 00:08:56,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 00:08:56,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:56,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 00:08:56,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:08:56,205 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand 9 states. [2020-10-15 00:08:56,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:08:56,679 INFO L93 Difference]: Finished difference Result 91 states and 120 transitions. [2020-10-15 00:08:56,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 00:08:56,679 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-10-15 00:08:56,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:08:56,681 INFO L225 Difference]: With dead ends: 91 [2020-10-15 00:08:56,681 INFO L226 Difference]: Without dead ends: 88 [2020-10-15 00:08:56,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:08:56,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-15 00:08:56,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 46. [2020-10-15 00:08:56,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-15 00:08:56,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2020-10-15 00:08:56,691 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 58 transitions. Word has length 24 [2020-10-15 00:08:56,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:08:56,691 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 58 transitions. [2020-10-15 00:08:56,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 00:08:56,692 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 58 transitions. [2020-10-15 00:08:56,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-15 00:08:56,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:08:56,693 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:08:56,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 00:08:56,693 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:08:56,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:08:56,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1101135229, now seen corresponding path program 6 times [2020-10-15 00:08:56,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:08:56,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939779167] [2020-10-15 00:08:56,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:08:56,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:56,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:56,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:56,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:56,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:56,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:56,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:57,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:59,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:59,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-15 00:08:59,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 00:08:59,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2931 [2020-10-15 00:08:59,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:59,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:59,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:08:59,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 00:08:59,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 00:08:59,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:59,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:08:59,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:08:59,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:08:59,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:08:59,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:08:59,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:08:59,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:08:59,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:08:59,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:08:59,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:08:59,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:08:59,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:08:59,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:08:59,780 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:08:59,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939779167] [2020-10-15 00:08:59,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:08:59,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-15 00:08:59,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303144913] [2020-10-15 00:08:59,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 00:08:59,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:08:59,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 00:08:59,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:08:59,785 INFO L87 Difference]: Start difference. First operand 46 states and 58 transitions. Second operand 10 states. [2020-10-15 00:09:00,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:00,353 INFO L93 Difference]: Finished difference Result 102 states and 135 transitions. [2020-10-15 00:09:00,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 00:09:00,353 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2020-10-15 00:09:00,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:00,355 INFO L225 Difference]: With dead ends: 102 [2020-10-15 00:09:00,355 INFO L226 Difference]: Without dead ends: 99 [2020-10-15 00:09:00,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-15 00:09:00,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-15 00:09:00,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 52. [2020-10-15 00:09:00,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-15 00:09:00,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2020-10-15 00:09:00,372 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 27 [2020-10-15 00:09:00,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:00,373 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2020-10-15 00:09:00,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 00:09:00,373 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2020-10-15 00:09:00,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-15 00:09:00,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:00,378 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:09:00,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 00:09:00,379 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:00,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:00,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1007609058, now seen corresponding path program 7 times [2020-10-15 00:09:00,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:00,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133378734] [2020-10-15 00:09:00,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:00,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:00,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:00,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:00,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:00,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:00,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:00,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:00,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:01,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:05,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:05,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-15 00:09:05,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 00:09:05,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 00:09:05,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:05,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:05,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:09:05,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 00:09:05,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 00:09:05,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:09:05,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:05,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:05,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:05,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:05,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:09:05,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:05,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:09:05,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:05,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:05,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:05,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:05,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:05,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:09:05,569 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:09:05,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133378734] [2020-10-15 00:09:05,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:05,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 00:09:05,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295881301] [2020-10-15 00:09:05,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 00:09:05,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:05,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 00:09:05,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:09:05,573 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand 11 states. [2020-10-15 00:09:06,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:06,199 INFO L93 Difference]: Finished difference Result 113 states and 150 transitions. [2020-10-15 00:09:06,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 00:09:06,200 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-10-15 00:09:06,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:06,201 INFO L225 Difference]: With dead ends: 113 [2020-10-15 00:09:06,201 INFO L226 Difference]: Without dead ends: 110 [2020-10-15 00:09:06,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:09:06,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-15 00:09:06,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 58. [2020-10-15 00:09:06,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-15 00:09:06,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 74 transitions. [2020-10-15 00:09:06,222 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 74 transitions. Word has length 30 [2020-10-15 00:09:06,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:06,222 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 74 transitions. [2020-10-15 00:09:06,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 00:09:06,223 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 74 transitions. [2020-10-15 00:09:06,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-15 00:09:06,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:06,224 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:09:06,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 00:09:06,231 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:06,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:06,231 INFO L82 PathProgramCache]: Analyzing trace with hash -122024483, now seen corresponding path program 8 times [2020-10-15 00:09:06,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:06,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036519808] [2020-10-15 00:09:06,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:06,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:06,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:06,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:06,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:06,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:06,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:06,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:06,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:06,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:07,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:11,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:11,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-15 00:09:11,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 00:09:11,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 00:09:11,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:11,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:11,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:09:11,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 00:09:11,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 00:09:11,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:09:11,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:11,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:11,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:11,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:11,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:09:11,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:11,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:09:11,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:11,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:11,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:11,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:11,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:11,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:09:11,392 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:09:11,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036519808] [2020-10-15 00:09:11,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:11,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-15 00:09:11,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140946656] [2020-10-15 00:09:11,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 00:09:11,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:11,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 00:09:11,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-15 00:09:11,395 INFO L87 Difference]: Start difference. First operand 58 states and 74 transitions. Second operand 12 states. [2020-10-15 00:09:12,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:12,130 INFO L93 Difference]: Finished difference Result 124 states and 165 transitions. [2020-10-15 00:09:12,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 00:09:12,131 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-10-15 00:09:12,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:12,132 INFO L225 Difference]: With dead ends: 124 [2020-10-15 00:09:12,132 INFO L226 Difference]: Without dead ends: 121 [2020-10-15 00:09:12,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2020-10-15 00:09:12,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-15 00:09:12,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 64. [2020-10-15 00:09:12,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-15 00:09:12,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 82 transitions. [2020-10-15 00:09:12,145 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 82 transitions. Word has length 33 [2020-10-15 00:09:12,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:12,145 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 82 transitions. [2020-10-15 00:09:12,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 00:09:12,146 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 82 transitions. [2020-10-15 00:09:12,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-15 00:09:12,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:12,147 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:09:12,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 00:09:12,147 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:12,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:12,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1656049986, now seen corresponding path program 9 times [2020-10-15 00:09:12,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:12,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238988070] [2020-10-15 00:09:12,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:12,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:12,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:12,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:12,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:12,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:12,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:12,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:12,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:12,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:12,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:15,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:17,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:17,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-15 00:09:17,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 00:09:17,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 00:09:17,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:17,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:17,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:09:17,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 00:09:17,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 00:09:17,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:17,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:17,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:17,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:17,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:17,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:09:17,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:17,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:09:17,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:17,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:17,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:17,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:17,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:17,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:09:17,328 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:09:17,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238988070] [2020-10-15 00:09:17,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:17,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-15 00:09:17,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861359198] [2020-10-15 00:09:17,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 00:09:17,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:17,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 00:09:17,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:09:17,331 INFO L87 Difference]: Start difference. First operand 64 states and 82 transitions. Second operand 13 states. [2020-10-15 00:09:18,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:18,175 INFO L93 Difference]: Finished difference Result 135 states and 180 transitions. [2020-10-15 00:09:18,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 00:09:18,176 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2020-10-15 00:09:18,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:18,178 INFO L225 Difference]: With dead ends: 135 [2020-10-15 00:09:18,178 INFO L226 Difference]: Without dead ends: 132 [2020-10-15 00:09:18,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2020-10-15 00:09:18,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-15 00:09:18,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 70. [2020-10-15 00:09:18,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-15 00:09:18,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 90 transitions. [2020-10-15 00:09:18,189 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 90 transitions. Word has length 36 [2020-10-15 00:09:18,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:18,189 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 90 transitions. [2020-10-15 00:09:18,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 00:09:18,189 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 90 transitions. [2020-10-15 00:09:18,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-15 00:09:18,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:18,190 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:09:18,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 00:09:18,191 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:18,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:18,191 INFO L82 PathProgramCache]: Analyzing trace with hash 937186877, now seen corresponding path program 10 times [2020-10-15 00:09:18,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:18,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527371814] [2020-10-15 00:09:18,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:18,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:18,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:18,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:18,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:18,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:18,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:18,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:18,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:18,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:18,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:18,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:22,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:23,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:23,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-15 00:09:23,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 00:09:23,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 00:09:23,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:23,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:23,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:09:23,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 00:09:23,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 00:09:23,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:23,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:23,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:23,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:23,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:23,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:09:23,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:23,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:09:23,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:23,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:23,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:23,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:23,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:23,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:09:23,390 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:09:23,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527371814] [2020-10-15 00:09:23,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:23,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-15 00:09:23,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692108217] [2020-10-15 00:09:23,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 00:09:23,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:23,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 00:09:23,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:09:23,393 INFO L87 Difference]: Start difference. First operand 70 states and 90 transitions. Second operand 14 states. [2020-10-15 00:09:24,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:24,401 INFO L93 Difference]: Finished difference Result 146 states and 195 transitions. [2020-10-15 00:09:24,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-15 00:09:24,402 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 39 [2020-10-15 00:09:24,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:24,403 INFO L225 Difference]: With dead ends: 146 [2020-10-15 00:09:24,403 INFO L226 Difference]: Without dead ends: 143 [2020-10-15 00:09:24,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2020-10-15 00:09:24,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-15 00:09:24,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 76. [2020-10-15 00:09:24,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-15 00:09:24,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2020-10-15 00:09:24,415 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 39 [2020-10-15 00:09:24,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:24,416 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2020-10-15 00:09:24,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 00:09:24,416 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2020-10-15 00:09:24,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-15 00:09:24,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:24,421 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:09:24,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 00:09:24,421 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:24,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:24,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1815147938, now seen corresponding path program 11 times [2020-10-15 00:09:24,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:24,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652260287] [2020-10-15 00:09:24,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:24,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:24,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:24,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:24,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:24,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:24,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:24,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:24,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:24,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:24,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:25,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:25,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:29,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:29,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-15 00:09:29,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 00:09:29,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 00:09:29,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:29,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:29,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:09:29,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:09:29,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:09:29,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:29,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:29,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:29,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:29,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:29,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:09:29,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:29,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:09:29,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:29,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:29,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:29,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:29,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:29,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:09:29,477 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2020-10-15 00:09:29,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652260287] [2020-10-15 00:09:29,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:09:29,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 00:09:29,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805652171] [2020-10-15 00:09:29,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 00:09:29,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:29,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 00:09:29,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 00:09:29,480 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand 4 states. [2020-10-15 00:09:29,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:29,586 INFO L93 Difference]: Finished difference Result 275 states and 382 transitions. [2020-10-15 00:09:29,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 00:09:29,587 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-10-15 00:09:29,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:29,588 INFO L225 Difference]: With dead ends: 275 [2020-10-15 00:09:29,588 INFO L226 Difference]: Without dead ends: 210 [2020-10-15 00:09:29,589 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 [2020-10-15 00:09:29,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-15 00:09:29,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 87. [2020-10-15 00:09:29,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-15 00:09:29,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 109 transitions. [2020-10-15 00:09:29,603 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 109 transitions. Word has length 42 [2020-10-15 00:09:29,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:29,604 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 109 transitions. [2020-10-15 00:09:29,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 00:09:29,604 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 109 transitions. [2020-10-15 00:09:29,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-15 00:09:29,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:29,605 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:09:29,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 00:09:29,606 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:29,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:29,606 INFO L82 PathProgramCache]: Analyzing trace with hash -614821519, now seen corresponding path program 1 times [2020-10-15 00:09:29,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:29,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505644013] [2020-10-15 00:09:29,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:29,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:29,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:29,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:29,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:29,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:29,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:29,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:29,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:29,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:29,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:29,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:30,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:34,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:34,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 00:09:34,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 00:09:34,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 00:09:34,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:34,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:34,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:09:34,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-15 00:09:34,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:09:34,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:09:34,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:34,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:34,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:34,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:34,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:09:34,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:34,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:09:34,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:34,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:34,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:34,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:34,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:34,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:34,726 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 267 proven. 1 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2020-10-15 00:09:34,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505644013] [2020-10-15 00:09:34,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:34,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-15 00:09:34,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934467958] [2020-10-15 00:09:34,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 00:09:34,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:34,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 00:09:34,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:09:34,729 INFO L87 Difference]: Start difference. First operand 87 states and 109 transitions. Second operand 5 states. [2020-10-15 00:09:34,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:34,921 INFO L93 Difference]: Finished difference Result 362 states and 492 transitions. [2020-10-15 00:09:34,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 00:09:34,922 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2020-10-15 00:09:34,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:34,925 INFO L225 Difference]: With dead ends: 362 [2020-10-15 00:09:34,926 INFO L226 Difference]: Without dead ends: 287 [2020-10-15 00:09:34,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:09:34,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-10-15 00:09:34,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 131. [2020-10-15 00:09:34,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-15 00:09:34,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 164 transitions. [2020-10-15 00:09:34,968 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 164 transitions. Word has length 75 [2020-10-15 00:09:34,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:34,968 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 164 transitions. [2020-10-15 00:09:34,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 00:09:34,969 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 164 transitions. [2020-10-15 00:09:34,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-15 00:09:34,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:34,972 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:09:34,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 00:09:34,973 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:34,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:34,973 INFO L82 PathProgramCache]: Analyzing trace with hash -405779266, now seen corresponding path program 2 times [2020-10-15 00:09:34,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:34,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595391741] [2020-10-15 00:09:34,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:34,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:34,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:34,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:35,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:35,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:35,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:35,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:35,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:35,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:35,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:35,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:35,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:35,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:35,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:36,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:36,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:39,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:39,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-15 00:09:39,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 00:09:39,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-15 00:09:39,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:39,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:39,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:09:39,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-15 00:09:39,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 00:09:39,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:40,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:40,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:40,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:40,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:40,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:09:40,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:40,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:09:40,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:40,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:40,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:40,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:40,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:40,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:40,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 583 proven. 5 refuted. 0 times theorem prover too weak. 523 trivial. 0 not checked. [2020-10-15 00:09:40,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595391741] [2020-10-15 00:09:40,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:40,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-15 00:09:40,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642672740] [2020-10-15 00:09:40,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 00:09:40,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:40,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 00:09:40,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:09:40,099 INFO L87 Difference]: Start difference. First operand 131 states and 164 transitions. Second operand 6 states. [2020-10-15 00:09:40,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:40,300 INFO L93 Difference]: Finished difference Result 479 states and 641 transitions. [2020-10-15 00:09:40,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 00:09:40,300 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2020-10-15 00:09:40,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:40,303 INFO L225 Difference]: With dead ends: 479 [2020-10-15 00:09:40,303 INFO L226 Difference]: Without dead ends: 364 [2020-10-15 00:09:40,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:09:40,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-15 00:09:40,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 175. [2020-10-15 00:09:40,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-15 00:09:40,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 219 transitions. [2020-10-15 00:09:40,338 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 219 transitions. Word has length 108 [2020-10-15 00:09:40,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:40,340 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 219 transitions. [2020-10-15 00:09:40,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 00:09:40,341 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 219 transitions. [2020-10-15 00:09:40,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-15 00:09:40,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:40,343 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:09:40,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 00:09:40,344 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:40,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:40,344 INFO L82 PathProgramCache]: Analyzing trace with hash 2123804433, now seen corresponding path program 3 times [2020-10-15 00:09:40,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:40,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2008462871] [2020-10-15 00:09:40,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:40,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:40,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:40,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:40,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:40,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:40,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:40,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:40,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:40,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:40,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:40,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:40,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:40,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:40,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:40,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:40,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:41,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:41,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:45,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:45,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-15 00:09:45,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-15 00:09:45,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-15 00:09:45,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:45,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:45,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:09:45,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-15 00:09:45,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 00:09:45,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:45,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:45,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:45,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:45,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:09:45,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:45,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:09:45,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:45,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:45,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:45,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:45,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:45,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:09:45,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2123 backedges. 1110 proven. 12 refuted. 0 times theorem prover too weak. 1001 trivial. 0 not checked. [2020-10-15 00:09:45,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2008462871] [2020-10-15 00:09:45,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:45,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-15 00:09:45,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879182334] [2020-10-15 00:09:45,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 00:09:45,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:45,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 00:09:45,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:09:45,525 INFO L87 Difference]: Start difference. First operand 175 states and 219 transitions. Second operand 7 states. [2020-10-15 00:09:45,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:45,877 INFO L93 Difference]: Finished difference Result 596 states and 790 transitions. [2020-10-15 00:09:45,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 00:09:45,878 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 141 [2020-10-15 00:09:45,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:45,882 INFO L225 Difference]: With dead ends: 596 [2020-10-15 00:09:45,882 INFO L226 Difference]: Without dead ends: 441 [2020-10-15 00:09:45,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:09:45,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2020-10-15 00:09:45,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 219. [2020-10-15 00:09:45,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-15 00:09:45,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 274 transitions. [2020-10-15 00:09:45,942 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 274 transitions. Word has length 141 [2020-10-15 00:09:45,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:45,942 INFO L479 AbstractCegarLoop]: Abstraction has 219 states and 274 transitions. [2020-10-15 00:09:45,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 00:09:45,943 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 274 transitions. [2020-10-15 00:09:45,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-15 00:09:45,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:45,947 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 44, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:09:45,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 00:09:45,947 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:45,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:45,948 INFO L82 PathProgramCache]: Analyzing trace with hash -2003339490, now seen corresponding path program 4 times [2020-10-15 00:09:45,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:45,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143992916] [2020-10-15 00:09:45,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:45,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:45,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:45,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:46,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:46,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:46,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:46,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:46,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:46,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:46,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:46,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:46,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:46,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:46,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:46,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:46,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:47,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:47,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:49,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:50,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:50,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:50,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-15 00:09:50,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-15 00:09:50,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-15 00:09:50,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:50,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:50,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:09:50,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-15 00:09:50,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:09:50,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:51,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:51,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:51,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:51,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:51,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:09:51,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:51,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:09:51,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:51,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:51,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:51,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:51,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:51,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:09:51,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3498 backedges. 1113 proven. 22 refuted. 0 times theorem prover too weak. 2363 trivial. 0 not checked. [2020-10-15 00:09:51,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143992916] [2020-10-15 00:09:51,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:51,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 00:09:51,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799124827] [2020-10-15 00:09:51,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 00:09:51,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:51,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 00:09:51,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:09:51,127 INFO L87 Difference]: Start difference. First operand 219 states and 274 transitions. Second operand 8 states. [2020-10-15 00:09:51,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:51,466 INFO L93 Difference]: Finished difference Result 713 states and 939 transitions. [2020-10-15 00:09:51,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 00:09:51,467 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 174 [2020-10-15 00:09:51,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:51,470 INFO L225 Difference]: With dead ends: 713 [2020-10-15 00:09:51,470 INFO L226 Difference]: Without dead ends: 518 [2020-10-15 00:09:51,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:09:51,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2020-10-15 00:09:51,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 263. [2020-10-15 00:09:51,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-15 00:09:51,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 329 transitions. [2020-10-15 00:09:51,519 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 329 transitions. Word has length 174 [2020-10-15 00:09:51,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:51,521 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 329 transitions. [2020-10-15 00:09:51,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 00:09:51,521 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 329 transitions. [2020-10-15 00:09:51,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-15 00:09:51,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:51,524 INFO L422 BasicCegarLoop]: trace histogram [55, 55, 55, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:09:51,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 00:09:51,524 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:51,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:51,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1009509553, now seen corresponding path program 5 times [2020-10-15 00:09:51,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:51,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440631147] [2020-10-15 00:09:51,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:51,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:51,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:51,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:51,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:51,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:51,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:51,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:51,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:51,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:51,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:51,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:51,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:51,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:51,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:51,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:51,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:52,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:52,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:52,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:56,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:56,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-15 00:09:56,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-15 00:09:56,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-15 00:09:56,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:56,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:56,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:09:56,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-15 00:09:56,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 00:09:56,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:56,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:09:56,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:56,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:56,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:09:56,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:09:56,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:09:56,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:09:56,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:09:56,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:09:56,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:09:56,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:09:56,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:09:56,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:09:56,731 INFO L134 CoverageAnalysis]: Checked inductivity of 5236 backedges. 1664 proven. 35 refuted. 0 times theorem prover too weak. 3537 trivial. 0 not checked. [2020-10-15 00:09:56,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440631147] [2020-10-15 00:09:56,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:09:56,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 00:09:56,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467012937] [2020-10-15 00:09:56,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 00:09:56,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:09:56,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 00:09:56,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:09:56,733 INFO L87 Difference]: Start difference. First operand 263 states and 329 transitions. Second operand 9 states. [2020-10-15 00:09:57,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:09:57,173 INFO L93 Difference]: Finished difference Result 830 states and 1088 transitions. [2020-10-15 00:09:57,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 00:09:57,173 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 207 [2020-10-15 00:09:57,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:09:57,177 INFO L225 Difference]: With dead ends: 830 [2020-10-15 00:09:57,177 INFO L226 Difference]: Without dead ends: 595 [2020-10-15 00:09:57,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:09:57,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2020-10-15 00:09:57,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 307. [2020-10-15 00:09:57,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2020-10-15 00:09:57,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 384 transitions. [2020-10-15 00:09:57,227 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 384 transitions. Word has length 207 [2020-10-15 00:09:57,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:09:57,227 INFO L479 AbstractCegarLoop]: Abstraction has 307 states and 384 transitions. [2020-10-15 00:09:57,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 00:09:57,228 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 384 transitions. [2020-10-15 00:09:57,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-15 00:09:57,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:09:57,231 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 66, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:09:57,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 00:09:57,231 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:09:57,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:09:57,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1869252990, now seen corresponding path program 6 times [2020-10-15 00:09:57,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:09:57,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067990080] [2020-10-15 00:09:57,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:09:57,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:09:57,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:57,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:57,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:57,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:57,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:57,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:57,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:57,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:57,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:57,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:57,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:57,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:57,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:57,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:57,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:57,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:57,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:57,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:09:58,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:02,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:02,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-15 00:10:02,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-15 00:10:02,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-15 00:10:02,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:02,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:02,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:10:02,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-15 00:10:02,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 00:10:02,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:02,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:10:02,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:02,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:02,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:02,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:10:02,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:02,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:10:02,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:02,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:02,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:10:02,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:02,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:10:02,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:02,456 INFO L134 CoverageAnalysis]: Checked inductivity of 7337 backedges. 2329 proven. 51 refuted. 0 times theorem prover too weak. 4957 trivial. 0 not checked. [2020-10-15 00:10:02,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067990080] [2020-10-15 00:10:02,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:10:02,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-15 00:10:02,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900938511] [2020-10-15 00:10:02,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 00:10:02,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:10:02,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 00:10:02,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:10:02,458 INFO L87 Difference]: Start difference. First operand 307 states and 384 transitions. Second operand 10 states. [2020-10-15 00:10:02,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:10:02,968 INFO L93 Difference]: Finished difference Result 947 states and 1237 transitions. [2020-10-15 00:10:02,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 00:10:02,968 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 240 [2020-10-15 00:10:02,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:10:02,972 INFO L225 Difference]: With dead ends: 947 [2020-10-15 00:10:02,972 INFO L226 Difference]: Without dead ends: 672 [2020-10-15 00:10:02,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-15 00:10:02,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2020-10-15 00:10:03,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 351. [2020-10-15 00:10:03,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-10-15 00:10:03,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 439 transitions. [2020-10-15 00:10:03,029 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 439 transitions. Word has length 240 [2020-10-15 00:10:03,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:10:03,029 INFO L479 AbstractCegarLoop]: Abstraction has 351 states and 439 transitions. [2020-10-15 00:10:03,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 00:10:03,029 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 439 transitions. [2020-10-15 00:10:03,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-15 00:10:03,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:10:03,033 INFO L422 BasicCegarLoop]: trace histogram [77, 77, 77, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:10:03,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 00:10:03,034 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:10:03,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:10:03,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1969999279, now seen corresponding path program 7 times [2020-10-15 00:10:03,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:10:03,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077465305] [2020-10-15 00:10:03,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:10:03,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:03,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:03,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:03,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:03,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:03,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:03,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:03,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:03,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:03,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:03,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:03,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:03,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:03,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:03,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:03,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:03,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:03,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:03,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:03,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:03,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:08,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:08,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-15 00:10:08,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-15 00:10:08,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-15 00:10:08,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:08,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:08,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 00:10:08,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 00:10:08,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 00:10:08,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:08,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:10:08,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:08,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:08,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:08,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:10:08,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:08,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:10:08,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:08,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:08,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:10:08,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:08,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:10:08,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:08,271 INFO L134 CoverageAnalysis]: Checked inductivity of 9801 backedges. 1631 proven. 70 refuted. 0 times theorem prover too weak. 8100 trivial. 0 not checked. [2020-10-15 00:10:08,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077465305] [2020-10-15 00:10:08,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:10:08,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 00:10:08,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527980388] [2020-10-15 00:10:08,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 00:10:08,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:10:08,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 00:10:08,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:10:08,273 INFO L87 Difference]: Start difference. First operand 351 states and 439 transitions. Second operand 11 states. [2020-10-15 00:10:08,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:10:08,863 INFO L93 Difference]: Finished difference Result 1064 states and 1386 transitions. [2020-10-15 00:10:08,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 00:10:08,863 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 273 [2020-10-15 00:10:08,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:10:08,868 INFO L225 Difference]: With dead ends: 1064 [2020-10-15 00:10:08,869 INFO L226 Difference]: Without dead ends: 749 [2020-10-15 00:10:08,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:10:08,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-10-15 00:10:08,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 395. [2020-10-15 00:10:08,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-10-15 00:10:08,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 494 transitions. [2020-10-15 00:10:08,919 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 494 transitions. Word has length 273 [2020-10-15 00:10:08,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:10:08,919 INFO L479 AbstractCegarLoop]: Abstraction has 395 states and 494 transitions. [2020-10-15 00:10:08,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 00:10:08,920 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 494 transitions. [2020-10-15 00:10:08,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-15 00:10:08,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:10:08,922 INFO L422 BasicCegarLoop]: trace histogram [88, 88, 88, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:10:08,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 00:10:08,923 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:10:08,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:10:08,923 INFO L82 PathProgramCache]: Analyzing trace with hash 336561118, now seen corresponding path program 8 times [2020-10-15 00:10:08,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:10:08,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826981015] [2020-10-15 00:10:08,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:10:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:08,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:08,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:08,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:09,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:09,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:09,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:09,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:09,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:09,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:09,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:09,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:09,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:09,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:09,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:09,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:09,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:09,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:09,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:09,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:10,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:13,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:13,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:13,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:13,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-10-15 00:10:13,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-15 00:10:13,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-15 00:10:13,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:13,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:13,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 00:10:13,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 00:10:13,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 00:10:13,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:14,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:10:14,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:14,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:14,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:14,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:10:14,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:14,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:10:14,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:14,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:14,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:10:14,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:14,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:10:14,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:14,188 INFO L134 CoverageAnalysis]: Checked inductivity of 12628 backedges. 2101 proven. 92 refuted. 0 times theorem prover too weak. 10435 trivial. 0 not checked. [2020-10-15 00:10:14,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [826981015] [2020-10-15 00:10:14,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:10:14,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-15 00:10:14,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333375865] [2020-10-15 00:10:14,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 00:10:14,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:10:14,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 00:10:14,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-15 00:10:14,190 INFO L87 Difference]: Start difference. First operand 395 states and 494 transitions. Second operand 12 states. [2020-10-15 00:10:14,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:10:14,881 INFO L93 Difference]: Finished difference Result 1181 states and 1535 transitions. [2020-10-15 00:10:14,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 00:10:14,881 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 306 [2020-10-15 00:10:14,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:10:14,885 INFO L225 Difference]: With dead ends: 1181 [2020-10-15 00:10:14,886 INFO L226 Difference]: Without dead ends: 826 [2020-10-15 00:10:14,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2020-10-15 00:10:14,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2020-10-15 00:10:14,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 439. [2020-10-15 00:10:14,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2020-10-15 00:10:14,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 549 transitions. [2020-10-15 00:10:14,971 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 549 transitions. Word has length 306 [2020-10-15 00:10:14,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:10:14,971 INFO L479 AbstractCegarLoop]: Abstraction has 439 states and 549 transitions. [2020-10-15 00:10:14,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 00:10:14,971 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 549 transitions. [2020-10-15 00:10:14,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-10-15 00:10:14,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:10:14,975 INFO L422 BasicCegarLoop]: trace histogram [99, 99, 99, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:10:14,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 00:10:14,976 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:10:14,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:10:14,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1312188431, now seen corresponding path program 9 times [2020-10-15 00:10:14,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:10:14,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377119757] [2020-10-15 00:10:14,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:10:14,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:15,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:15,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:15,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:15,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:15,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:15,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:15,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:15,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:15,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:15,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:15,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:16,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:16,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:16,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:16,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:16,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:16,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:16,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:16,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:16,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:16,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:19,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:19,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:20,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:20,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 345 [2020-10-15 00:10:20,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-10-15 00:10:20,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-15 00:10:20,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:20,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:20,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 00:10:20,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-15 00:10:20,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 00:10:20,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:20,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:10:20,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:20,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:20,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:20,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:10:20,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:20,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:10:20,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:20,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:20,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:10:20,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:20,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:10:20,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:10:20,448 INFO L134 CoverageAnalysis]: Checked inductivity of 15818 backedges. 5008 proven. 117 refuted. 0 times theorem prover too weak. 10693 trivial. 0 not checked. [2020-10-15 00:10:20,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377119757] [2020-10-15 00:10:20,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:10:20,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-15 00:10:20,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292725434] [2020-10-15 00:10:20,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 00:10:20,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:10:20,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 00:10:20,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:10:20,459 INFO L87 Difference]: Start difference. First operand 439 states and 549 transitions. Second operand 13 states. [2020-10-15 00:10:21,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:10:21,338 INFO L93 Difference]: Finished difference Result 1298 states and 1684 transitions. [2020-10-15 00:10:21,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 00:10:21,342 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 339 [2020-10-15 00:10:21,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:10:21,348 INFO L225 Difference]: With dead ends: 1298 [2020-10-15 00:10:21,348 INFO L226 Difference]: Without dead ends: 903 [2020-10-15 00:10:21,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2020-10-15 00:10:21,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2020-10-15 00:10:21,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 483. [2020-10-15 00:10:21,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-10-15 00:10:21,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 604 transitions. [2020-10-15 00:10:21,465 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 604 transitions. Word has length 339 [2020-10-15 00:10:21,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:10:21,465 INFO L479 AbstractCegarLoop]: Abstraction has 483 states and 604 transitions. [2020-10-15 00:10:21,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 00:10:21,465 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 604 transitions. [2020-10-15 00:10:21,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-10-15 00:10:21,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:10:21,468 INFO L422 BasicCegarLoop]: trace histogram [110, 110, 110, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:10:21,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 00:10:21,469 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:10:21,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:10:21,469 INFO L82 PathProgramCache]: Analyzing trace with hash -859019714, now seen corresponding path program 10 times [2020-10-15 00:10:21,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:10:21,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548542817] [2020-10-15 00:10:21,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:10:21,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:21,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:21,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:21,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:21,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:21,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:21,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:21,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:21,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:21,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:21,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:22,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:22,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:22,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:22,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:22,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:22,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:22,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:22,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:22,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:22,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:22,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:22,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:22,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:26,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:26,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 378 [2020-10-15 00:10:26,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-10-15 00:10:26,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-15 00:10:26,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:26,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:26,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 00:10:26,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 00:10:26,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-15 00:10:26,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:26,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:10:26,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:26,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:26,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:26,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:10:26,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:26,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:10:26,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:26,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:26,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:10:26,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:26,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:10:26,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:10:26,985 INFO L134 CoverageAnalysis]: Checked inductivity of 19371 backedges. 3221 proven. 145 refuted. 0 times theorem prover too weak. 16005 trivial. 0 not checked. [2020-10-15 00:10:26,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548542817] [2020-10-15 00:10:26,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:10:26,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-15 00:10:26,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035354390] [2020-10-15 00:10:26,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 00:10:26,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:10:26,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 00:10:26,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:10:26,993 INFO L87 Difference]: Start difference. First operand 483 states and 604 transitions. Second operand 14 states. [2020-10-15 00:10:28,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:10:28,142 INFO L93 Difference]: Finished difference Result 1415 states and 1833 transitions. [2020-10-15 00:10:28,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-15 00:10:28,143 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 372 [2020-10-15 00:10:28,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:10:28,148 INFO L225 Difference]: With dead ends: 1415 [2020-10-15 00:10:28,148 INFO L226 Difference]: Without dead ends: 980 [2020-10-15 00:10:28,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2020-10-15 00:10:28,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2020-10-15 00:10:28,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 527. [2020-10-15 00:10:28,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2020-10-15 00:10:28,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 659 transitions. [2020-10-15 00:10:28,292 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 659 transitions. Word has length 372 [2020-10-15 00:10:28,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:10:28,292 INFO L479 AbstractCegarLoop]: Abstraction has 527 states and 659 transitions. [2020-10-15 00:10:28,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 00:10:28,293 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 659 transitions. [2020-10-15 00:10:28,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2020-10-15 00:10:28,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:10:28,298 INFO L422 BasicCegarLoop]: trace histogram [121, 121, 121, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:10:28,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 00:10:28,298 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:10:28,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:10:28,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1799755153, now seen corresponding path program 11 times [2020-10-15 00:10:28,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:10:28,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825994618] [2020-10-15 00:10:28,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:10:28,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:28,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:28,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:28,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:28,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:28,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:28,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:28,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:28,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:28,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:28,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:28,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:28,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:28,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:29,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:29,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:29,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:29,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:29,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:29,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:29,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:29,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:29,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:29,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:29,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:29,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:33,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:33,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 411 [2020-10-15 00:10:33,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 25 [2020-10-15 00:10:33,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-15 00:10:33,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:33,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:33,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 00:10:33,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-15 00:10:33,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 00:10:33,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:33,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:10:33,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:33,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:33,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:33,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:10:33,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:33,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:10:33,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:33,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:33,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:10:33,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:33,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:10:33,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:10:33,849 INFO L134 CoverageAnalysis]: Checked inductivity of 23287 backedges. 7364 proven. 176 refuted. 0 times theorem prover too weak. 15747 trivial. 0 not checked. [2020-10-15 00:10:33,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825994618] [2020-10-15 00:10:33,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:10:33,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-15 00:10:33,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694400348] [2020-10-15 00:10:33,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 00:10:33,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:10:33,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 00:10:33,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:10:33,852 INFO L87 Difference]: Start difference. First operand 527 states and 659 transitions. Second operand 15 states. [2020-10-15 00:10:34,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:10:34,921 INFO L93 Difference]: Finished difference Result 1532 states and 1982 transitions. [2020-10-15 00:10:34,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-15 00:10:34,921 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 405 [2020-10-15 00:10:34,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:10:34,927 INFO L225 Difference]: With dead ends: 1532 [2020-10-15 00:10:34,927 INFO L226 Difference]: Without dead ends: 1057 [2020-10-15 00:10:34,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=108, Invalid=594, Unknown=0, NotChecked=0, Total=702 [2020-10-15 00:10:34,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2020-10-15 00:10:35,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 571. [2020-10-15 00:10:35,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-10-15 00:10:35,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 714 transitions. [2020-10-15 00:10:35,041 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 714 transitions. Word has length 405 [2020-10-15 00:10:35,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:10:35,042 INFO L479 AbstractCegarLoop]: Abstraction has 571 states and 714 transitions. [2020-10-15 00:10:35,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 00:10:35,042 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 714 transitions. [2020-10-15 00:10:35,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2020-10-15 00:10:35,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:10:35,046 INFO L422 BasicCegarLoop]: trace histogram [132, 132, 132, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:10:35,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 00:10:35,046 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:10:35,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:10:35,046 INFO L82 PathProgramCache]: Analyzing trace with hash 778514590, now seen corresponding path program 12 times [2020-10-15 00:10:35,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:10:35,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194658749] [2020-10-15 00:10:35,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:10:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:35,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:35,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:35,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:35,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:35,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:35,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:35,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:35,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:35,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:36,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:36,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:36,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:36,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:36,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:36,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:36,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:36,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:36,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:36,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:36,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:36,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:36,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:36,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:37,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:38,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:40,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:40,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 444 [2020-10-15 00:10:40,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 25 [2020-10-15 00:10:40,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-15 00:10:40,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:40,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:40,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 00:10:40,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 00:10:40,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 00:10:40,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:40,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:10:40,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:40,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:40,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:40,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:10:40,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:40,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:10:40,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:40,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:40,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:10:40,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:40,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:10:40,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:40,452 INFO L134 CoverageAnalysis]: Checked inductivity of 27566 backedges. 4581 proven. 210 refuted. 0 times theorem prover too weak. 22775 trivial. 0 not checked. [2020-10-15 00:10:40,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194658749] [2020-10-15 00:10:40,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:10:40,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-15 00:10:40,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553189918] [2020-10-15 00:10:40,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 00:10:40,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:10:40,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 00:10:40,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-10-15 00:10:40,454 INFO L87 Difference]: Start difference. First operand 571 states and 714 transitions. Second operand 16 states. [2020-10-15 00:10:41,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:10:41,836 INFO L93 Difference]: Finished difference Result 1649 states and 2131 transitions. [2020-10-15 00:10:41,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 00:10:41,837 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 438 [2020-10-15 00:10:41,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:10:41,844 INFO L225 Difference]: With dead ends: 1649 [2020-10-15 00:10:41,844 INFO L226 Difference]: Without dead ends: 1134 [2020-10-15 00:10:41,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=117, Invalid=695, Unknown=0, NotChecked=0, Total=812 [2020-10-15 00:10:41,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2020-10-15 00:10:41,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 615. [2020-10-15 00:10:41,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-10-15 00:10:41,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 769 transitions. [2020-10-15 00:10:41,985 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 769 transitions. Word has length 438 [2020-10-15 00:10:41,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:10:41,985 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 769 transitions. [2020-10-15 00:10:41,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 00:10:41,986 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 769 transitions. [2020-10-15 00:10:41,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2020-10-15 00:10:41,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:10:41,990 INFO L422 BasicCegarLoop]: trace histogram [143, 143, 143, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:10:41,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-15 00:10:41,991 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:10:41,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:10:41,991 INFO L82 PathProgramCache]: Analyzing trace with hash -2113688783, now seen corresponding path program 13 times [2020-10-15 00:10:41,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:10:41,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297745388] [2020-10-15 00:10:41,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:10:42,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:42,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:42,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:42,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:42,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:42,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:42,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:42,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:42,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:42,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:42,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:42,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:42,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:42,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:42,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:42,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:42,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:42,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:42,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:42,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:42,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:42,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:42,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:43,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:43,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:45,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:45,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:47,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:47,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 477 [2020-10-15 00:10:47,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 26 [2020-10-15 00:10:47,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-15 00:10:47,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:47,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:47,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 00:10:47,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 00:10:47,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 00:10:47,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:10:47,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:10:47,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:47,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:47,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:47,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:10:47,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:47,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:10:47,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:47,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:47,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:10:47,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:47,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:10:47,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:47,489 INFO L134 CoverageAnalysis]: Checked inductivity of 32208 backedges. 5351 proven. 247 refuted. 0 times theorem prover too weak. 26610 trivial. 0 not checked. [2020-10-15 00:10:47,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297745388] [2020-10-15 00:10:47,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:10:47,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-15 00:10:47,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033573745] [2020-10-15 00:10:47,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 00:10:47,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:10:47,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 00:10:47,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2020-10-15 00:10:47,492 INFO L87 Difference]: Start difference. First operand 615 states and 769 transitions. Second operand 17 states. [2020-10-15 00:10:48,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:10:48,893 INFO L93 Difference]: Finished difference Result 1766 states and 2280 transitions. [2020-10-15 00:10:48,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-15 00:10:48,893 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 471 [2020-10-15 00:10:48,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:10:48,899 INFO L225 Difference]: With dead ends: 1766 [2020-10-15 00:10:48,899 INFO L226 Difference]: Without dead ends: 1211 [2020-10-15 00:10:48,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=126, Invalid=804, Unknown=0, NotChecked=0, Total=930 [2020-10-15 00:10:48,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2020-10-15 00:10:49,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 659. [2020-10-15 00:10:49,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-10-15 00:10:49,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 824 transitions. [2020-10-15 00:10:49,048 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 824 transitions. Word has length 471 [2020-10-15 00:10:49,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:10:49,048 INFO L479 AbstractCegarLoop]: Abstraction has 659 states and 824 transitions. [2020-10-15 00:10:49,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 00:10:49,049 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 824 transitions. [2020-10-15 00:10:49,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2020-10-15 00:10:49,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:10:49,054 INFO L422 BasicCegarLoop]: trace histogram [154, 154, 154, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:10:49,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-15 00:10:49,054 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:10:49,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:10:49,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1814422270, now seen corresponding path program 14 times [2020-10-15 00:10:49,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:10:49,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232279491] [2020-10-15 00:10:49,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:10:49,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:49,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:49,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:49,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:49,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:49,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:49,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:49,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:49,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:49,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:49,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:49,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:49,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:49,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:49,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:49,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:49,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:49,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:49,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:49,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:49,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:49,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:49,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:49,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:50,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:50,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:54,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:54,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 510 [2020-10-15 00:10:54,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 25 [2020-10-15 00:10:54,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5082 [2020-10-15 00:10:54,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:54,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:54,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-15 00:10:54,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 00:10:54,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 00:10:54,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:54,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:10:54,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:54,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:54,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:10:54,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:10:54,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:10:54,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:10:54,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:10:54,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:10:54,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:10:54,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:10:54,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:10:54,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:10:54,589 INFO L134 CoverageAnalysis]: Checked inductivity of 37213 backedges. 6181 proven. 287 refuted. 0 times theorem prover too weak. 30745 trivial. 0 not checked. [2020-10-15 00:10:54,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232279491] [2020-10-15 00:10:54,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:10:54,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-15 00:10:54,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102993189] [2020-10-15 00:10:54,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-15 00:10:54,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:10:54,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-15 00:10:54,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2020-10-15 00:10:54,591 INFO L87 Difference]: Start difference. First operand 659 states and 824 transitions. Second operand 18 states. [2020-10-15 00:10:56,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:10:56,092 INFO L93 Difference]: Finished difference Result 1883 states and 2429 transitions. [2020-10-15 00:10:56,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-15 00:10:56,092 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 504 [2020-10-15 00:10:56,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:10:56,098 INFO L225 Difference]: With dead ends: 1883 [2020-10-15 00:10:56,098 INFO L226 Difference]: Without dead ends: 1288 [2020-10-15 00:10:56,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2020-10-15 00:10:56,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2020-10-15 00:10:56,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 703. [2020-10-15 00:10:56,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2020-10-15 00:10:56,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 879 transitions. [2020-10-15 00:10:56,266 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 879 transitions. Word has length 504 [2020-10-15 00:10:56,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:10:56,267 INFO L479 AbstractCegarLoop]: Abstraction has 703 states and 879 transitions. [2020-10-15 00:10:56,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-15 00:10:56,267 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 879 transitions. [2020-10-15 00:10:56,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2020-10-15 00:10:56,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:10:56,272 INFO L422 BasicCegarLoop]: trace histogram [165, 165, 165, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:10:56,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-15 00:10:56,273 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:10:56,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:10:56,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1920751825, now seen corresponding path program 15 times [2020-10-15 00:10:56,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:10:56,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265538158] [2020-10-15 00:10:56,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:10:56,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:10:56,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:56,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:56,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:56,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:56,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:56,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:56,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:56,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:56,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:56,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:57,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:57,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:57,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:57,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:57,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:57,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:57,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:57,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:57,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:57,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:57,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:57,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:57,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:57,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:57,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:59,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:59,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:10:59,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:01,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:01,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 543 [2020-10-15 00:11:01,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 28 [2020-10-15 00:11:01,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5089 [2020-10-15 00:11:01,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:01,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:01,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-15 00:11:01,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 00:11:01,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 00:11:01,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:11:01,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:11:01,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:01,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:01,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:01,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:11:01,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:11:01,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:11:01,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:01,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:01,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:11:01,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:11:01,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:11:01,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:11:01,832 INFO L134 CoverageAnalysis]: Checked inductivity of 42581 backedges. 7071 proven. 330 refuted. 0 times theorem prover too weak. 35180 trivial. 0 not checked. [2020-10-15 00:11:01,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265538158] [2020-10-15 00:11:01,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:11:01,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-15 00:11:01,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941278948] [2020-10-15 00:11:01,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 00:11:01,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:11:01,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 00:11:01,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:11:01,834 INFO L87 Difference]: Start difference. First operand 703 states and 879 transitions. Second operand 19 states. [2020-10-15 00:11:03,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:11:03,560 INFO L93 Difference]: Finished difference Result 2000 states and 2578 transitions. [2020-10-15 00:11:03,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-15 00:11:03,560 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 537 [2020-10-15 00:11:03,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:11:03,566 INFO L225 Difference]: With dead ends: 2000 [2020-10-15 00:11:03,566 INFO L226 Difference]: Without dead ends: 1365 [2020-10-15 00:11:03,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=144, Invalid=1046, Unknown=0, NotChecked=0, Total=1190 [2020-10-15 00:11:03,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2020-10-15 00:11:03,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 747. [2020-10-15 00:11:03,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747 states. [2020-10-15 00:11:03,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 934 transitions. [2020-10-15 00:11:03,735 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 934 transitions. Word has length 537 [2020-10-15 00:11:03,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:11:03,735 INFO L479 AbstractCegarLoop]: Abstraction has 747 states and 934 transitions. [2020-10-15 00:11:03,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 00:11:03,735 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 934 transitions. [2020-10-15 00:11:03,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2020-10-15 00:11:03,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:11:03,740 INFO L422 BasicCegarLoop]: trace histogram [176, 176, 176, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:11:03,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-15 00:11:03,741 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:11:03,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:11:03,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1211204258, now seen corresponding path program 16 times [2020-10-15 00:11:03,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:11:03,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479249812] [2020-10-15 00:11:03,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:11:03,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:03,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:03,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:03,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:03,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:04,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:04,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:04,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:04,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:04,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:04,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:04,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:04,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:04,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:04,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:04,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:04,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:04,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:04,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:04,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:04,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:04,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:04,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:04,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:04,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:05,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:05,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:08,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:08,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 576 [2020-10-15 00:11:08,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 26 [2020-10-15 00:11:08,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5091 [2020-10-15 00:11:08,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:08,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:08,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 00:11:08,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 00:11:08,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 00:11:08,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:11:09,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:11:09,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:09,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:09,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:09,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:11:09,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:11:09,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:11:09,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:09,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:09,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:11:09,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:11:09,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:11:09,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:11:09,359 INFO L134 CoverageAnalysis]: Checked inductivity of 48312 backedges. 8021 proven. 376 refuted. 0 times theorem prover too weak. 39915 trivial. 0 not checked. [2020-10-15 00:11:09,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479249812] [2020-10-15 00:11:09,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:11:09,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-15 00:11:09,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181749822] [2020-10-15 00:11:09,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 00:11:09,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:11:09,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 00:11:09,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2020-10-15 00:11:09,361 INFO L87 Difference]: Start difference. First operand 747 states and 934 transitions. Second operand 20 states. [2020-10-15 00:11:11,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:11:11,219 INFO L93 Difference]: Finished difference Result 2117 states and 2727 transitions. [2020-10-15 00:11:11,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-15 00:11:11,219 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 570 [2020-10-15 00:11:11,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:11:11,225 INFO L225 Difference]: With dead ends: 2117 [2020-10-15 00:11:11,225 INFO L226 Difference]: Without dead ends: 1442 [2020-10-15 00:11:11,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=153, Invalid=1179, Unknown=0, NotChecked=0, Total=1332 [2020-10-15 00:11:11,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1442 states. [2020-10-15 00:11:11,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1442 to 791. [2020-10-15 00:11:11,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 791 states. [2020-10-15 00:11:11,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 989 transitions. [2020-10-15 00:11:11,437 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 989 transitions. Word has length 570 [2020-10-15 00:11:11,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:11:11,439 INFO L479 AbstractCegarLoop]: Abstraction has 791 states and 989 transitions. [2020-10-15 00:11:11,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 00:11:11,439 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 989 transitions. [2020-10-15 00:11:11,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2020-10-15 00:11:11,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:11:11,445 INFO L422 BasicCegarLoop]: trace histogram [187, 187, 187, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:11:11,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-15 00:11:11,445 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:11:11,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:11:11,446 INFO L82 PathProgramCache]: Analyzing trace with hash 178921073, now seen corresponding path program 17 times [2020-10-15 00:11:11,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:11:11,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176477749] [2020-10-15 00:11:11,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:11:11,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:11,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:11,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:11,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:11,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:11,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:11,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:12,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:12,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:12,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:12,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:12,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:12,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:12,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:12,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:12,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:12,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:12,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:12,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:12,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:12,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:12,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:12,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:12,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:12,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:12,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:12,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:14,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:14,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:16,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:16,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 609 [2020-10-15 00:11:16,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 28 [2020-10-15 00:11:16,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5104 [2020-10-15 00:11:16,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:16,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:16,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-15 00:11:16,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 00:11:16,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-15 00:11:16,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:11:16,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:11:16,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:16,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:16,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:16,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:11:16,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:11:16,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:11:16,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:16,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:16,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:11:16,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:11:16,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:11:16,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:11:17,137 INFO L134 CoverageAnalysis]: Checked inductivity of 54406 backedges. 9031 proven. 425 refuted. 0 times theorem prover too weak. 44950 trivial. 0 not checked. [2020-10-15 00:11:17,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176477749] [2020-10-15 00:11:17,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:11:17,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-15 00:11:17,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456918548] [2020-10-15 00:11:17,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-15 00:11:17,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:11:17,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-15 00:11:17,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2020-10-15 00:11:17,139 INFO L87 Difference]: Start difference. First operand 791 states and 989 transitions. Second operand 21 states. [2020-10-15 00:11:19,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:11:19,118 INFO L93 Difference]: Finished difference Result 2234 states and 2876 transitions. [2020-10-15 00:11:19,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-15 00:11:19,119 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 603 [2020-10-15 00:11:19,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:11:19,126 INFO L225 Difference]: With dead ends: 2234 [2020-10-15 00:11:19,127 INFO L226 Difference]: Without dead ends: 1519 [2020-10-15 00:11:19,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=162, Invalid=1320, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 00:11:19,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1519 states. [2020-10-15 00:11:19,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1519 to 835. [2020-10-15 00:11:19,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 835 states. [2020-10-15 00:11:19,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1044 transitions. [2020-10-15 00:11:19,333 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1044 transitions. Word has length 603 [2020-10-15 00:11:19,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:11:19,333 INFO L479 AbstractCegarLoop]: Abstraction has 835 states and 1044 transitions. [2020-10-15 00:11:19,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-15 00:11:19,333 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1044 transitions. [2020-10-15 00:11:19,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 637 [2020-10-15 00:11:19,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:11:19,339 INFO L422 BasicCegarLoop]: trace histogram [198, 198, 198, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:11:19,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-15 00:11:19,339 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:11:19,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:11:19,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1582891074, now seen corresponding path program 18 times [2020-10-15 00:11:19,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:11:19,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835097438] [2020-10-15 00:11:19,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:11:19,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:19,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:19,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:19,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:19,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:19,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:19,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:20,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:20,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:20,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:20,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:20,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:20,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:20,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:20,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:20,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:20,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:20,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:20,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:20,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:20,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:20,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:20,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:20,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:20,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:20,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:21,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:21,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:24,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:24,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 642 [2020-10-15 00:11:24,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-10-15 00:11:24,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5097 [2020-10-15 00:11:24,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:24,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:24,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-15 00:11:24,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 00:11:24,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 00:11:24,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:11:24,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:11:24,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:24,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:24,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:24,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:11:24,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:11:24,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:11:24,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:24,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:24,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:11:24,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:11:24,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:11:24,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:11:25,070 INFO L134 CoverageAnalysis]: Checked inductivity of 60863 backedges. 10101 proven. 477 refuted. 0 times theorem prover too weak. 50285 trivial. 0 not checked. [2020-10-15 00:11:25,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835097438] [2020-10-15 00:11:25,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:11:25,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-15 00:11:25,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121417662] [2020-10-15 00:11:25,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-15 00:11:25,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:11:25,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-15 00:11:25,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2020-10-15 00:11:25,072 INFO L87 Difference]: Start difference. First operand 835 states and 1044 transitions. Second operand 22 states. [2020-10-15 00:11:27,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:11:27,269 INFO L93 Difference]: Finished difference Result 2351 states and 3025 transitions. [2020-10-15 00:11:27,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-15 00:11:27,270 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 636 [2020-10-15 00:11:27,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:11:27,276 INFO L225 Difference]: With dead ends: 2351 [2020-10-15 00:11:27,276 INFO L226 Difference]: Without dead ends: 1596 [2020-10-15 00:11:27,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=171, Invalid=1469, Unknown=0, NotChecked=0, Total=1640 [2020-10-15 00:11:27,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2020-10-15 00:11:27,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 879. [2020-10-15 00:11:27,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 879 states. [2020-10-15 00:11:27,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1099 transitions. [2020-10-15 00:11:27,470 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1099 transitions. Word has length 636 [2020-10-15 00:11:27,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:11:27,470 INFO L479 AbstractCegarLoop]: Abstraction has 879 states and 1099 transitions. [2020-10-15 00:11:27,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-15 00:11:27,471 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1099 transitions. [2020-10-15 00:11:27,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2020-10-15 00:11:27,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:11:27,477 INFO L422 BasicCegarLoop]: trace histogram [209, 209, 209, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:11:27,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-15 00:11:27,477 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:11:27,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:11:27,478 INFO L82 PathProgramCache]: Analyzing trace with hash 168229905, now seen corresponding path program 19 times [2020-10-15 00:11:27,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:11:27,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036241546] [2020-10-15 00:11:27,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:11:27,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:27,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:27,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:27,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:27,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:28,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:28,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:28,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:28,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:28,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:28,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:28,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:28,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:28,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:28,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:28,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:28,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:28,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:29,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:29,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:29,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:29,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:29,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:29,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:29,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:29,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:29,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:30,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:30,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:32,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:32,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 675 [2020-10-15 00:11:32,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 28 [2020-10-15 00:11:32,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5123 [2020-10-15 00:11:32,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:32,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:32,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-15 00:11:32,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 00:11:32,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 00:11:32,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:11:33,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:11:33,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:33,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:33,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:33,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:11:33,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:11:33,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:11:33,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:33,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:33,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:11:33,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:11:33,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:11:33,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:11:33,295 INFO L134 CoverageAnalysis]: Checked inductivity of 67683 backedges. 11231 proven. 532 refuted. 0 times theorem prover too weak. 55920 trivial. 0 not checked. [2020-10-15 00:11:33,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036241546] [2020-10-15 00:11:33,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:11:33,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-15 00:11:33,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602759007] [2020-10-15 00:11:33,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-15 00:11:33,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:11:33,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-15 00:11:33,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2020-10-15 00:11:33,298 INFO L87 Difference]: Start difference. First operand 879 states and 1099 transitions. Second operand 23 states. [2020-10-15 00:11:35,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:11:35,720 INFO L93 Difference]: Finished difference Result 2468 states and 3174 transitions. [2020-10-15 00:11:35,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-15 00:11:35,721 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 669 [2020-10-15 00:11:35,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:11:35,728 INFO L225 Difference]: With dead ends: 2468 [2020-10-15 00:11:35,728 INFO L226 Difference]: Without dead ends: 1673 [2020-10-15 00:11:35,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=180, Invalid=1626, Unknown=0, NotChecked=0, Total=1806 [2020-10-15 00:11:35,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1673 states. [2020-10-15 00:11:35,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1673 to 923. [2020-10-15 00:11:35,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 923 states. [2020-10-15 00:11:35,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1154 transitions. [2020-10-15 00:11:35,901 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1154 transitions. Word has length 669 [2020-10-15 00:11:35,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:11:35,902 INFO L479 AbstractCegarLoop]: Abstraction has 923 states and 1154 transitions. [2020-10-15 00:11:35,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-15 00:11:35,902 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1154 transitions. [2020-10-15 00:11:35,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 703 [2020-10-15 00:11:35,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:11:35,909 INFO L422 BasicCegarLoop]: trace histogram [220, 220, 220, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:11:35,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-15 00:11:35,909 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:11:35,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:11:35,909 INFO L82 PathProgramCache]: Analyzing trace with hash 2020960798, now seen corresponding path program 20 times [2020-10-15 00:11:35,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:11:35,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820095324] [2020-10-15 00:11:35,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:11:35,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:35,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:35,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:35,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:36,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:36,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:36,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:36,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:37,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:37,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:37,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:37,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:37,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:37,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:37,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:37,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:37,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:37,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:37,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:37,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:37,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:37,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:37,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:37,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:38,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:38,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:38,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:38,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:41,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:41,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 708 [2020-10-15 00:11:41,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-10-15 00:11:41,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5119 [2020-10-15 00:11:41,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:41,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:41,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-15 00:11:41,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 00:11:41,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 00:11:41,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:11:41,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:11:41,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:41,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:41,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:41,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:11:41,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:11:41,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:11:41,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:41,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:41,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:11:41,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:11:41,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:11:41,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:11:41,735 INFO L134 CoverageAnalysis]: Checked inductivity of 74866 backedges. 12421 proven. 590 refuted. 0 times theorem prover too weak. 61855 trivial. 0 not checked. [2020-10-15 00:11:41,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820095324] [2020-10-15 00:11:41,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:11:41,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-15 00:11:41,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833080201] [2020-10-15 00:11:41,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-15 00:11:41,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:11:41,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-15 00:11:41,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2020-10-15 00:11:41,737 INFO L87 Difference]: Start difference. First operand 923 states and 1154 transitions. Second operand 24 states. [2020-10-15 00:11:44,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:11:44,442 INFO L93 Difference]: Finished difference Result 2585 states and 3323 transitions. [2020-10-15 00:11:44,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-15 00:11:44,443 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 702 [2020-10-15 00:11:44,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:11:44,450 INFO L225 Difference]: With dead ends: 2585 [2020-10-15 00:11:44,450 INFO L226 Difference]: Without dead ends: 1750 [2020-10-15 00:11:44,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=189, Invalid=1791, Unknown=0, NotChecked=0, Total=1980 [2020-10-15 00:11:44,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1750 states. [2020-10-15 00:11:44,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1750 to 967. [2020-10-15 00:11:44,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 967 states. [2020-10-15 00:11:44,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1209 transitions. [2020-10-15 00:11:44,658 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1209 transitions. Word has length 702 [2020-10-15 00:11:44,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:11:44,658 INFO L479 AbstractCegarLoop]: Abstraction has 967 states and 1209 transitions. [2020-10-15 00:11:44,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-15 00:11:44,659 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1209 transitions. [2020-10-15 00:11:44,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 736 [2020-10-15 00:11:44,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:11:44,666 INFO L422 BasicCegarLoop]: trace histogram [231, 231, 231, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:11:44,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-15 00:11:44,666 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:11:44,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:11:44,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1047727695, now seen corresponding path program 21 times [2020-10-15 00:11:44,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:11:44,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78087954] [2020-10-15 00:11:44,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:11:44,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:44,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:44,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:44,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:44,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:45,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:45,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:45,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:45,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:45,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:45,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:46,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:46,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:46,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:46,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:46,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:46,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:46,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:46,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:46,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:46,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:46,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:46,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:46,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:46,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:46,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:46,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:49,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:49,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 741 [2020-10-15 00:11:49,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 26 [2020-10-15 00:11:49,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5153 [2020-10-15 00:11:49,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:49,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:49,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-15 00:11:49,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 00:11:49,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-15 00:11:49,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:11:50,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:11:50,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:50,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:50,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:50,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:11:50,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:11:50,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:11:50,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:50,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:50,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:11:50,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:11:50,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:11:50,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:11:50,587 INFO L134 CoverageAnalysis]: Checked inductivity of 82412 backedges. 13671 proven. 651 refuted. 0 times theorem prover too weak. 68090 trivial. 0 not checked. [2020-10-15 00:11:50,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78087954] [2020-10-15 00:11:50,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:11:50,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-15 00:11:50,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61059795] [2020-10-15 00:11:50,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-15 00:11:50,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:11:50,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-15 00:11:50,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2020-10-15 00:11:50,589 INFO L87 Difference]: Start difference. First operand 967 states and 1209 transitions. Second operand 25 states. [2020-10-15 00:11:53,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:11:53,516 INFO L93 Difference]: Finished difference Result 2702 states and 3472 transitions. [2020-10-15 00:11:53,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-15 00:11:53,516 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 735 [2020-10-15 00:11:53,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:11:53,523 INFO L225 Difference]: With dead ends: 2702 [2020-10-15 00:11:53,524 INFO L226 Difference]: Without dead ends: 1827 [2020-10-15 00:11:53,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=198, Invalid=1964, Unknown=0, NotChecked=0, Total=2162 [2020-10-15 00:11:53,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1827 states. [2020-10-15 00:11:53,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1827 to 1011. [2020-10-15 00:11:53,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1011 states. [2020-10-15 00:11:53,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1264 transitions. [2020-10-15 00:11:53,707 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1264 transitions. Word has length 735 [2020-10-15 00:11:53,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:11:53,708 INFO L479 AbstractCegarLoop]: Abstraction has 1011 states and 1264 transitions. [2020-10-15 00:11:53,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-15 00:11:53,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1264 transitions. [2020-10-15 00:11:53,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 769 [2020-10-15 00:11:53,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:11:53,713 INFO L422 BasicCegarLoop]: trace histogram [242, 242, 242, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:11:53,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-15 00:11:53,714 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:11:53,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:11:53,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1451246466, now seen corresponding path program 22 times [2020-10-15 00:11:53,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:11:53,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065264143] [2020-10-15 00:11:53,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:11:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:53,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:53,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:53,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:54,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:54,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:54,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:54,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:55,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:55,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:55,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:55,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:55,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:55,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:55,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:55,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:55,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:55,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:55,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:55,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:55,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:55,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:55,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:55,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:55,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:56,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:56,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:56,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:58,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:58,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 774 [2020-10-15 00:11:58,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-10-15 00:11:58,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5149 [2020-10-15 00:11:58,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:58,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:58,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-15 00:11:58,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 00:11:58,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-15 00:11:58,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:11:59,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:11:59,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:11:59,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:11:59,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:11:59,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:11:59,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:11:59,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:11:59,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:11:59,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:11:59,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:11:59,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:11:59,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:11:59,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:11:59,809 INFO L134 CoverageAnalysis]: Checked inductivity of 90321 backedges. 14981 proven. 715 refuted. 0 times theorem prover too weak. 74625 trivial. 0 not checked. [2020-10-15 00:11:59,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065264143] [2020-10-15 00:11:59,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:11:59,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-15 00:11:59,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734845850] [2020-10-15 00:11:59,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-15 00:11:59,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:11:59,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-15 00:11:59,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2020-10-15 00:11:59,811 INFO L87 Difference]: Start difference. First operand 1011 states and 1264 transitions. Second operand 26 states. [2020-10-15 00:12:02,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:12:02,914 INFO L93 Difference]: Finished difference Result 2819 states and 3621 transitions. [2020-10-15 00:12:02,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-15 00:12:02,917 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 768 [2020-10-15 00:12:02,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:12:02,924 INFO L225 Difference]: With dead ends: 2819 [2020-10-15 00:12:02,924 INFO L226 Difference]: Without dead ends: 1904 [2020-10-15 00:12:02,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=207, Invalid=2145, Unknown=0, NotChecked=0, Total=2352 [2020-10-15 00:12:02,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1904 states. [2020-10-15 00:12:03,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1904 to 1055. [2020-10-15 00:12:03,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1055 states. [2020-10-15 00:12:03,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1319 transitions. [2020-10-15 00:12:03,126 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1319 transitions. Word has length 768 [2020-10-15 00:12:03,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:12:03,126 INFO L479 AbstractCegarLoop]: Abstraction has 1055 states and 1319 transitions. [2020-10-15 00:12:03,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-15 00:12:03,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1319 transitions. [2020-10-15 00:12:03,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 802 [2020-10-15 00:12:03,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:12:03,133 INFO L422 BasicCegarLoop]: trace histogram [253, 253, 253, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:12:03,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-15 00:12:03,133 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:12:03,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:12:03,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1279918255, now seen corresponding path program 23 times [2020-10-15 00:12:03,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:12:03,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51695949] [2020-10-15 00:12:03,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:12:03,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:03,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:03,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:03,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:03,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:03,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:03,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:04,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:04,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:04,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:04,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:04,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:04,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:04,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:04,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:04,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:04,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:05,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:05,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:05,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:05,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:05,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:05,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:05,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:05,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:05,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:06,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:06,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:06,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:08,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:08,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 807 [2020-10-15 00:12:08,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 28 [2020-10-15 00:12:08,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5148 [2020-10-15 00:12:08,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:08,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:08,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-15 00:12:08,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 00:12:08,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-15 00:12:08,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:12:08,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:12:08,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:08,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:08,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:08,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:12:08,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:08,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:12:08,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:08,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:08,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:12:08,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:08,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:12:08,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:12:09,206 INFO L134 CoverageAnalysis]: Checked inductivity of 98593 backedges. 16351 proven. 782 refuted. 0 times theorem prover too weak. 81460 trivial. 0 not checked. [2020-10-15 00:12:09,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51695949] [2020-10-15 00:12:09,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:12:09,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-15 00:12:09,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933038787] [2020-10-15 00:12:09,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-15 00:12:09,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:12:09,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-15 00:12:09,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2020-10-15 00:12:09,209 INFO L87 Difference]: Start difference. First operand 1055 states and 1319 transitions. Second operand 27 states. [2020-10-15 00:12:12,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:12:12,717 INFO L93 Difference]: Finished difference Result 2936 states and 3770 transitions. [2020-10-15 00:12:12,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-15 00:12:12,718 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 801 [2020-10-15 00:12:12,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:12:12,726 INFO L225 Difference]: With dead ends: 2936 [2020-10-15 00:12:12,727 INFO L226 Difference]: Without dead ends: 1981 [2020-10-15 00:12:12,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=216, Invalid=2334, Unknown=0, NotChecked=0, Total=2550 [2020-10-15 00:12:12,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1981 states. [2020-10-15 00:12:12,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1981 to 1099. [2020-10-15 00:12:12,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1099 states. [2020-10-15 00:12:12,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 1374 transitions. [2020-10-15 00:12:12,959 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 1374 transitions. Word has length 801 [2020-10-15 00:12:12,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:12:12,959 INFO L479 AbstractCegarLoop]: Abstraction has 1099 states and 1374 transitions. [2020-10-15 00:12:12,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-15 00:12:12,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 1374 transitions. [2020-10-15 00:12:12,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 835 [2020-10-15 00:12:12,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:12:12,968 INFO L422 BasicCegarLoop]: trace histogram [264, 264, 264, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:12:12,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-15 00:12:12,968 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:12:12,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:12:12,969 INFO L82 PathProgramCache]: Analyzing trace with hash 546043614, now seen corresponding path program 24 times [2020-10-15 00:12:12,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:12:12,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339231734] [2020-10-15 00:12:12,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:12:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:13,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:13,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:13,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:13,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:13,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:13,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:14,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:14,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:14,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:14,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:14,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:14,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:14,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:15,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:15,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:15,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:15,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:15,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:15,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:15,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:15,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:15,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:15,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:15,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:15,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:16,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:16,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:18,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:18,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 840 [2020-10-15 00:12:18,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-10-15 00:12:18,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5151 [2020-10-15 00:12:18,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:18,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:18,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-15 00:12:18,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 00:12:18,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-15 00:12:18,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:12:18,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:12:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:18,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:18,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:18,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:12:18,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:18,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:12:18,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:18,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:18,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:12:18,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:18,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:12:18,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:12:19,107 INFO L134 CoverageAnalysis]: Checked inductivity of 107228 backedges. 17781 proven. 852 refuted. 0 times theorem prover too weak. 88595 trivial. 0 not checked. [2020-10-15 00:12:19,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339231734] [2020-10-15 00:12:19,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:12:19,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-15 00:12:19,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225514627] [2020-10-15 00:12:19,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-15 00:12:19,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:12:19,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-15 00:12:19,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2020-10-15 00:12:19,110 INFO L87 Difference]: Start difference. First operand 1099 states and 1374 transitions. Second operand 28 states. [2020-10-15 00:12:22,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:12:22,902 INFO L93 Difference]: Finished difference Result 3053 states and 3919 transitions. [2020-10-15 00:12:22,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-15 00:12:22,902 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 834 [2020-10-15 00:12:22,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:12:22,909 INFO L225 Difference]: With dead ends: 3053 [2020-10-15 00:12:22,909 INFO L226 Difference]: Without dead ends: 2058 [2020-10-15 00:12:22,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=225, Invalid=2531, Unknown=0, NotChecked=0, Total=2756 [2020-10-15 00:12:22,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2058 states. [2020-10-15 00:12:23,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2058 to 1143. [2020-10-15 00:12:23,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1143 states. [2020-10-15 00:12:23,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 1429 transitions. [2020-10-15 00:12:23,170 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 1429 transitions. Word has length 834 [2020-10-15 00:12:23,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:12:23,171 INFO L479 AbstractCegarLoop]: Abstraction has 1143 states and 1429 transitions. [2020-10-15 00:12:23,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-15 00:12:23,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 1429 transitions. [2020-10-15 00:12:23,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 868 [2020-10-15 00:12:23,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:12:23,177 INFO L422 BasicCegarLoop]: trace histogram [275, 275, 275, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:12:23,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-15 00:12:23,177 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:12:23,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:12:23,177 INFO L82 PathProgramCache]: Analyzing trace with hash 880551153, now seen corresponding path program 25 times [2020-10-15 00:12:23,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:12:23,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [121764420] [2020-10-15 00:12:23,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:12:23,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:23,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:23,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:23,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:23,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:23,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:24,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:24,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:24,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:24,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:24,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:24,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:25,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:25,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:25,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:25,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:25,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:25,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:25,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:25,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:25,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:25,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:25,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:25,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:25,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:25,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:25,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:25,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:28,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:28,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 873 [2020-10-15 00:12:28,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-10-15 00:12:28,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5154 [2020-10-15 00:12:28,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:28,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:28,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-15 00:12:28,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 00:12:28,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-15 00:12:28,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:12:29,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:12:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:29,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:29,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:29,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:12:29,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:29,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:12:29,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:29,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:29,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:12:29,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:29,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:12:29,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:12:29,421 INFO L134 CoverageAnalysis]: Checked inductivity of 116226 backedges. 19271 proven. 925 refuted. 0 times theorem prover too weak. 96030 trivial. 0 not checked. [2020-10-15 00:12:29,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [121764420] [2020-10-15 00:12:29,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:12:29,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-15 00:12:29,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830745514] [2020-10-15 00:12:29,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-15 00:12:29,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:12:29,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-15 00:12:29,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=732, Unknown=0, NotChecked=0, Total=812 [2020-10-15 00:12:29,424 INFO L87 Difference]: Start difference. First operand 1143 states and 1429 transitions. Second operand 29 states. [2020-10-15 00:12:33,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:12:33,469 INFO L93 Difference]: Finished difference Result 3170 states and 4068 transitions. [2020-10-15 00:12:33,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-15 00:12:33,470 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 867 [2020-10-15 00:12:33,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:12:33,476 INFO L225 Difference]: With dead ends: 3170 [2020-10-15 00:12:33,476 INFO L226 Difference]: Without dead ends: 2135 [2020-10-15 00:12:33,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=234, Invalid=2736, Unknown=0, NotChecked=0, Total=2970 [2020-10-15 00:12:33,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2135 states. [2020-10-15 00:12:33,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2135 to 1187. [2020-10-15 00:12:33,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1187 states. [2020-10-15 00:12:33,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1484 transitions. [2020-10-15 00:12:33,730 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1484 transitions. Word has length 867 [2020-10-15 00:12:33,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:12:33,731 INFO L479 AbstractCegarLoop]: Abstraction has 1187 states and 1484 transitions. [2020-10-15 00:12:33,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-15 00:12:33,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1484 transitions. [2020-10-15 00:12:33,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 901 [2020-10-15 00:12:33,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:12:33,737 INFO L422 BasicCegarLoop]: trace histogram [286, 286, 286, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:12:33,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-15 00:12:33,737 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:12:33,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:12:33,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1478485698, now seen corresponding path program 26 times [2020-10-15 00:12:33,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:12:33,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326267237] [2020-10-15 00:12:33,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:12:33,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:33,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:33,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:33,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:33,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:34,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:34,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:34,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:35,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:35,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:35,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:35,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:35,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:35,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:35,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:35,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:35,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:35,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:36,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:36,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:36,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:36,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:36,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:36,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:36,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:36,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:36,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:36,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:36,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:38,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:38,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 906 [2020-10-15 00:12:38,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 28 [2020-10-15 00:12:38,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5152 [2020-10-15 00:12:38,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:38,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:38,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-15 00:12:38,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 00:12:38,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-15 00:12:38,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:12:39,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:12:39,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:12:39,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:12:39,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:12:39,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:12:39,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:12:39,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:12:39,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:12:39,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:12:39,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:12:39,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:12:39,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:12:39,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:12:39,997 INFO L134 CoverageAnalysis]: Checked inductivity of 125587 backedges. 20821 proven. 1001 refuted. 0 times theorem prover too weak. 103765 trivial. 0 not checked. [2020-10-15 00:12:39,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326267237] [2020-10-15 00:12:39,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:12:39,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-15 00:12:39,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340804957] [2020-10-15 00:12:39,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-15 00:12:39,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:12:39,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-15 00:12:39,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=787, Unknown=0, NotChecked=0, Total=870 [2020-10-15 00:12:39,999 INFO L87 Difference]: Start difference. First operand 1187 states and 1484 transitions. Second operand 30 states.