/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 SingleStatement --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=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_15-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:22:12,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:22:12,933 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:22:12,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:22:12,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:22:12,960 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:22:12,962 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:22:12,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:22:12,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:22:12,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:22:12,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:22:12,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:22:12,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:22:12,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:22:12,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:22:12,974 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:22:12,975 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:22:12,976 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:22:12,978 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:22:12,980 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:22:12,982 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:22:12,983 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:22:12,985 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:22:12,986 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:22:12,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:22:12,989 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:22:12,989 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:22:12,990 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:22:12,991 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:22:12,992 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:22:12,992 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:22:12,993 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:22:12,994 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:22:12,995 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:22:12,997 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:22:12,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:22:12,998 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:22:12,998 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:22:12,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:22:12,999 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:22:13,000 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:22:13,001 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 [2020-09-25 13:22:13,029 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:22:13,029 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:22:13,031 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:22:13,031 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:22:13,031 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:22:13,031 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:22:13,032 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:22:13,032 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:22:13,032 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:22:13,032 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:22:13,032 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:22:13,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:22:13,033 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:22:13,033 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:22:13,033 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:22:13,033 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:22:13,034 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:22:13,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:22:13,034 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:22:13,034 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:22:13,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:22:13,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:22:13,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:22:13,035 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:22:13,036 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:22:13,036 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:22:13,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:22:13,036 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:22:13,036 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:22:13,037 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 -> SingleStatement 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=0.4;log-additional-information=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=0.4;log-additional-information=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=0.4;log-additional-information=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=0.4;log-additional-information=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=0.4;log-additional-information=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=0.4;log-additional-information=true; [2020-09-25 13:22:13,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:22:13,549 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:22:13,553 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:22:13,555 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:22:13,556 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:22:13,557 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_15-1.c [2020-09-25 13:22:13,653 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84aa98490/6854e94a833b44739daba478724fdab7/FLAG8bf4afc32 [2020-09-25 13:22:14,185 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:22:14,186 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_15-1.c [2020-09-25 13:22:14,195 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84aa98490/6854e94a833b44739daba478724fdab7/FLAG8bf4afc32 [2020-09-25 13:22:14,524 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84aa98490/6854e94a833b44739daba478724fdab7 [2020-09-25 13:22:14,537 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:22:14,543 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:22:14,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:22:14,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:22:14,549 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:22:14,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:22:14" (1/1) ... [2020-09-25 13:22:14,554 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ee0cdab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:14, skipping insertion in model container [2020-09-25 13:22:14,555 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:22:14" (1/1) ... [2020-09-25 13:22:14,564 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:22:14,595 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:22:14,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:22:14,892 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:22:14,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:22:14,927 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:22:14,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:14 WrapperNode [2020-09-25 13:22:14,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:22:14,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:22:14,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:22:14,929 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:22:14,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:14" (1/1) ... [2020-09-25 13:22:14,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:14" (1/1) ... [2020-09-25 13:22:15,028 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:14" (1/1) ... [2020-09-25 13:22:15,031 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:14" (1/1) ... [2020-09-25 13:22:15,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:14" (1/1) ... [2020-09-25 13:22:15,039 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:14" (1/1) ... [2020-09-25 13:22:15,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:14" (1/1) ... [2020-09-25 13:22:15,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:22:15,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:22:15,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:22:15,043 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:22:15,044 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:14" (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 [2020-09-25 13:22:15,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:22:15,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:22:15,122 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-25 13:22:15,122 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:22:15,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:22:15,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:22:15,123 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-25 13:22:15,123 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:22:15,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:22:15,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:22:15,332 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:22:15,332 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 13:22:15,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:22:15 BoogieIcfgContainer [2020-09-25 13:22:15,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:22:15,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:22:15,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:22:15,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:22:15,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:22:14" (1/3) ... [2020-09-25 13:22:15,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25299fab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:22:15, skipping insertion in model container [2020-09-25 13:22:15,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:22:14" (2/3) ... [2020-09-25 13:22:15,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25299fab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:22:15, skipping insertion in model container [2020-09-25 13:22:15,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:22:15" (3/3) ... [2020-09-25 13:22:15,349 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_15-1.c [2020-09-25 13:22:15,361 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:22:15,373 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:22:15,416 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:22:15,453 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:22:15,454 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:22:15,454 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:22:15,454 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:22:15,454 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:22:15,455 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:22:15,455 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:22:15,455 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:22:15,481 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 13:22:15,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 13:22:15,493 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:15,495 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:22:15,495 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:15,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:15,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-25 13:22:15,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:15,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1242960232] [2020-09-25 13:22:15,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:15,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:15,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:15,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:22:15,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:15,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 13:22:15,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:15,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:15,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:22:15,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:22:15,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:22:15,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:22:15,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:15,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:15,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:15,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:15,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:15,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:15,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:22:15,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:15,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:15,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:15,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:15,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:15,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:15,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:22:15,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:15,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:15,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:15,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:15,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:15,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 13:22:15,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:15,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:15,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:22:15,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:22:15,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:22:15,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:15,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:22:15,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1242960232] [2020-09-25 13:22:15,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:22:15,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:22:15,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100693433] [2020-09-25 13:22:15,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:22:15,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:15,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:22:15,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:22:15,879 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 13:22:16,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:16,016 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 13:22:16,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:22:16,019 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 13:22:16,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:16,033 INFO L225 Difference]: With dead ends: 44 [2020-09-25 13:22:16,033 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 13:22:16,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:22:16,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 13:22:16,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 13:22:16,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 13:22:16,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 13:22:16,097 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 13:22:16,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:16,097 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 13:22:16,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:22:16,098 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 13:22:16,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 13:22:16,100 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:16,100 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:22:16,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:22:16,101 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:16,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:16,102 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-25 13:22:16,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:16,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109331426] [2020-09-25 13:22:16,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:16,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:16,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:16,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:16,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 13:22:16,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:16,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 13:22:16,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:16,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:16,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:22:16,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:22:16,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:22:16,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:22:16,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:16,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:16,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:16,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:16,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:16,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:16,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:22:16,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:16,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:16,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:16,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:16,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:16,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 13:22:16,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:22:16,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:16,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:16,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:16,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:16,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:16,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 13:22:16,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:16,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:16,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:22:16,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:22:16,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:22:16,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:16,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:22:16,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109331426] [2020-09-25 13:22:16,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:22:16,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:22:16,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421544074] [2020-09-25 13:22:16,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:22:16,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:16,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:22:16,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:22:16,315 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 13:22:16,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:16,391 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 13:22:16,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:22:16,392 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 13:22:16,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:16,393 INFO L225 Difference]: With dead ends: 36 [2020-09-25 13:22:16,394 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 13:22:16,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:22:16,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 13:22:16,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 13:22:16,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 13:22:16,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 13:22:16,404 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 13:22:16,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:16,405 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 13:22:16,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:22:16,405 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 13:22:16,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 13:22:16,407 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:16,407 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:22:16,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:22:16,407 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:16,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:16,408 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-25 13:22:16,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:16,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338055898] [2020-09-25 13:22:16,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:16,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:16,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:16,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:16,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:17,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:17,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 13:22:17,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:22:17,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 621 [2020-09-25 13:22:17,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:17,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:17,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:17,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:22:17,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 13:22:17,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:22:17,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:17,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:17,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:17,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:17,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:17,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:17,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:22:17,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:17,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:17,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:17,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:17,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:17,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:17,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:22:17,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:17,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:17,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:17,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:17,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:17,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:22:17,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:22:17,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-09-25 13:22:17,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:17,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:17,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:17,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:22:17,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:22:17,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:17,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:17,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:17,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:17,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:17,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:17,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:17,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:22:17,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:17,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:17,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:22:17,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:17,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:22:17,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:17,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:22:17,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:17,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:17,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:17,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:17,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:17,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:22:17,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:17,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:17,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:17,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:17,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:22:17,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:17,521 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 13:22:17,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338055898] [2020-09-25 13:22:17,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:22:17,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:22:17,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672735492] [2020-09-25 13:22:17,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:22:17,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:17,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:22:17,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:22:17,524 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-09-25 13:22:17,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:17,617 INFO L93 Difference]: Finished difference Result 62 states and 79 transitions. [2020-09-25 13:22:17,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:22:17,618 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 13:22:17,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:17,620 INFO L225 Difference]: With dead ends: 62 [2020-09-25 13:22:17,620 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 13:22:17,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:22:17,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 13:22:17,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-09-25 13:22:17,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 13:22:17,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-09-25 13:22:17,632 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 33 [2020-09-25 13:22:17,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:17,633 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-09-25 13:22:17,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:22:17,633 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-09-25 13:22:17,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 13:22:17,635 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:17,635 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:22:17,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:22:17,636 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:17,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:17,637 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 1 times [2020-09-25 13:22:17,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:17,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844910652] [2020-09-25 13:22:17,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:17,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:17,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:17,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:18,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:18,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 13:22:18,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:22:18,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 379 [2020-09-25 13:22:18,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:18,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:18,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:18,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:22:18,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 13:22:18,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:18,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:18,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:18,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:18,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:18,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:18,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:18,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:22:18,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:18,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:18,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:18,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:18,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:18,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:18,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:22:18,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:18,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:18,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:18,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:18,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:22:18,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:22:18,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-09-25 13:22:18,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:18,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:18,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:18,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:22:18,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:22:18,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:18,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:18,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:18,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:18,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:18,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:18,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:22:18,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:18,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:18,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:18,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:18,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:22:18,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:18,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:22:18,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:18,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:18,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:18,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:18,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:18,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:22:18,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:18,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:18,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:22:18,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:18,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:22:18,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:18,423 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 13:22:18,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844910652] [2020-09-25 13:22:18,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:22:18,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:22:18,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401888463] [2020-09-25 13:22:18,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:22:18,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:18,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:22:18,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:22:18,427 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 7 states. [2020-09-25 13:22:18,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:18,548 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-09-25 13:22:18,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:22:18,549 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-09-25 13:22:18,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:18,551 INFO L225 Difference]: With dead ends: 50 [2020-09-25 13:22:18,551 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 13:22:18,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:22:18,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 13:22:18,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2020-09-25 13:22:18,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 13:22:18,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-09-25 13:22:18,572 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 34 [2020-09-25 13:22:18,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:18,572 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-09-25 13:22:18,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:22:18,573 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-09-25 13:22:18,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 13:22:18,576 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:18,577 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:22:18,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:22:18,577 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:18,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:18,578 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-25 13:22:18,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:18,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1655695875] [2020-09-25 13:22:18,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:18,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:18,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:18,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:18,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:18,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:19,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:19,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 13:22:19,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:22:19,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 510 [2020-09-25 13:22:19,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:19,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:19,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:19,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:22:19,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 13:22:19,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:19,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:19,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:19,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:19,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:19,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:19,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:22:19,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:19,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:19,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:19,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:19,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:19,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:19,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:22:19,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:19,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:19,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:19,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:19,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:19,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:19,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:22:19,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:22:19,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 408 [2020-09-25 13:22:19,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:19,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:19,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:19,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:22:19,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 13:22:19,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:19,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:19,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:19,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:19,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:19,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:19,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 13:22:19,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:19,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:19,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:22:19,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:19,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:22:19,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:19,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:22:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:19,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:19,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:19,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:19,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:19,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:22:19,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:19,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:19,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:19,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:19,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:22:19,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:19,654 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 13:22:19,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1655695875] [2020-09-25 13:22:19,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:22:19,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 13:22:19,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356721680] [2020-09-25 13:22:19,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:22:19,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:19,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:22:19,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:22:19,657 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 6 states. [2020-09-25 13:22:19,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:19,782 INFO L93 Difference]: Finished difference Result 94 states and 129 transitions. [2020-09-25 13:22:19,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:22:19,785 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-09-25 13:22:19,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:19,791 INFO L225 Difference]: With dead ends: 94 [2020-09-25 13:22:19,791 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 13:22:19,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:22:19,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 13:22:19,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2020-09-25 13:22:19,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 13:22:19,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 70 transitions. [2020-09-25 13:22:19,823 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 70 transitions. Word has length 35 [2020-09-25 13:22:19,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:19,824 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 70 transitions. [2020-09-25 13:22:19,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:22:19,824 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 70 transitions. [2020-09-25 13:22:19,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 13:22:19,830 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:19,830 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:22:19,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:22:19,831 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:19,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:19,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1693530075, now seen corresponding path program 2 times [2020-09-25 13:22:19,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:19,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924417221] [2020-09-25 13:22:19,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:19,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:19,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:19,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:19,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:19,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:20,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:20,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:20,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:24,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:24,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 13:22:24,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:22:24,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 13:22:24,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:24,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:24,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:24,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:22:24,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 13:22:24,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:22:24,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:24,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:24,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:24,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:24,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:24,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:22:24,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:24,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:24,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:24,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:24,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:24,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:24,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:22:24,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:24,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:24,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:24,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:25,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:25,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:25,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:25,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:28,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:28,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 13:22:28,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:22:28,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3752 [2020-09-25 13:22:28,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:28,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:28,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:28,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:22:28,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 13:22:28,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:22:28,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:28,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:28,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:28,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:28,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:28,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:22:28,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:22:28,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-25 13:22:28,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:28,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:28,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:28,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:28,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:22:28,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:28,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:28,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:28,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:28,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:28,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:28,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:28,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:22:28,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:28,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:28,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:28,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:28,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:28,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:28,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:22:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:28,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:28,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:28,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:28,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:28,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:22:28,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:28,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:28,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:28,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:28,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:28,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:28,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:22:28,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:28,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:28,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:28,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:28,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:28,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 13:22:28,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:28,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:28,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:22:28,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:28,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:22:28,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:28,894 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 13:22:28,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924417221] [2020-09-25 13:22:28,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:22:28,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:22:28,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241722580] [2020-09-25 13:22:28,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:22:28,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:28,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:22:28,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:22:28,898 INFO L87 Difference]: Start difference. First operand 54 states and 70 transitions. Second operand 7 states. [2020-09-25 13:22:29,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:29,050 INFO L93 Difference]: Finished difference Result 74 states and 95 transitions. [2020-09-25 13:22:29,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:22:29,050 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 13:22:29,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:29,053 INFO L225 Difference]: With dead ends: 74 [2020-09-25 13:22:29,053 INFO L226 Difference]: Without dead ends: 68 [2020-09-25 13:22:29,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:22:29,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-25 13:22:29,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 62. [2020-09-25 13:22:29,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 13:22:29,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 82 transitions. [2020-09-25 13:22:29,078 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 82 transitions. Word has length 51 [2020-09-25 13:22:29,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:29,079 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 82 transitions. [2020-09-25 13:22:29,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:22:29,079 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 82 transitions. [2020-09-25 13:22:29,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 13:22:29,089 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:29,089 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:22:29,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:22:29,090 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:29,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:29,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1086233509, now seen corresponding path program 3 times [2020-09-25 13:22:29,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:29,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720475575] [2020-09-25 13:22:29,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:29,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:29,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:29,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:29,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:29,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:29,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:31,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:31,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:31,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:34,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:34,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 13:22:34,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:22:34,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 13:22:34,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:34,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:34,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:22:34,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:22:34,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 13:22:34,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:34,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:34,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:34,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:34,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:34,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:34,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:22:34,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:34,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:34,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:34,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:34,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:34,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:34,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:22:34,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:34,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:34,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:34,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:34,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:34,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:34,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:34,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:34,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:37,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:37,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:37,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:37,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:38,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:39,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:39,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 13:22:39,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 13:22:39,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:22:39,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:39,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:39,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:22:39,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:22:39,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 13:22:39,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:39,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:39,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:39,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:39,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:39,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:39,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:39,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:22:39,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:22:39,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 13:22:39,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:39,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:39,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:39,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:39,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:22:39,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:39,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:39,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:39,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:39,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:39,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:39,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:39,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:22:39,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:39,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:39,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:39,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:39,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:22:39,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:39,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:22:39,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:39,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:39,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:39,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:39,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:39,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:22:39,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:39,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:39,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:22:39,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:39,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:22:39,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:39,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:22:39,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:39,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:39,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:39,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:39,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:39,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:39,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:39,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:40,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:42,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:42,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 13:22:42,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:22:42,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3550 [2020-09-25 13:22:42,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:42,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:42,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:22:42,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:22:42,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 13:22:42,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:43,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:43,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:43,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:43,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:43,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:43,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:22:43,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:22:43,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 13:22:43,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:43,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:43,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:43,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:43,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:22:43,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:43,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:43,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:43,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:43,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:43,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:43,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:43,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:22:43,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:43,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:43,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:43,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:43,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:43,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:43,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:22:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:43,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:43,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:43,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:43,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:43,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:22:43,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:43,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:43,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:43,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:43,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:43,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:43,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:22:43,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:43,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:43,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:43,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:43,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:43,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:22:43,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:43,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:43,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:43,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:43,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:22:43,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:43,180 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 58 proven. 65 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-09-25 13:22:43,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720475575] [2020-09-25 13:22:43,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:22:43,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:22:43,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632285623] [2020-09-25 13:22:43,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:22:43,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:43,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:22:43,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:22:43,184 INFO L87 Difference]: Start difference. First operand 62 states and 82 transitions. Second operand 10 states. [2020-09-25 13:22:43,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:43,500 INFO L93 Difference]: Finished difference Result 129 states and 195 transitions. [2020-09-25 13:22:43,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:22:43,501 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2020-09-25 13:22:43,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:43,502 INFO L225 Difference]: With dead ends: 129 [2020-09-25 13:22:43,502 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 13:22:43,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-09-25 13:22:43,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 13:22:43,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 13:22:43,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 13:22:43,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-09-25 13:22:43,513 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 85 [2020-09-25 13:22:43,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:43,513 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-09-25 13:22:43,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:22:43,513 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-09-25 13:22:43,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 13:22:43,515 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:43,515 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:22:43,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 13:22:43,515 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:43,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:43,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1883941443, now seen corresponding path program 4 times [2020-09-25 13:22:43,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:43,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1218138346] [2020-09-25 13:22:43,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:43,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:43,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:43,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:43,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:43,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:43,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:43,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:44,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:44,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:44,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:45,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:45,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:48,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:48,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 13:22:48,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 13:22:48,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 13:22:48,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:48,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:48,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 13:22:48,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 13:22:48,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 13:22:48,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:48,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:48,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:48,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:48,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:48,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:48,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:48,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:22:48,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:48,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:48,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:48,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:48,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:48,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:48,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:22:48,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:48,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:48,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:48,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:48,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:48,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:48,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:49,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:49,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:49,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:49,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:49,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:49,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:49,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:49,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:51,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:51,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:51,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:51,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:53,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:53,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 13:22:53,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-25 13:22:53,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 13:22:53,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:53,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:53,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:22:53,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:22:53,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 13:22:53,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:53,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:53,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:53,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:53,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:53,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:53,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:53,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:54,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:58,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:58,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 13:22:58,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:22:58,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 13:22:58,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:58,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:58,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:58,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:58,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 13:22:58,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:58,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:58,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:58,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:58,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:58,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:22:58,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:58,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 13:22:58,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:58,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:58,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:58,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:58,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:22:58,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:58,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:58,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:58,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:58,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:58,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:58,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:58,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:22:58,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:58,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:58,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:58,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:58,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:58,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:58,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:22:58,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:58,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:58,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:58,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:58,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:58,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:22:58,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:58,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:58,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:58,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:58,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:58,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:58,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:22:58,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:58,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:58,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:58,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:58,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:58,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 13:22:58,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:58,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:58,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:22:58,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:58,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:22:58,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:58,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 13:22:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:58,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:58,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:58,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:58,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:58,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:59,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:59,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:59,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:59,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:00,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:00,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:00,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:00,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:03,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:03,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 13:23:03,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 13:23:03,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:23:03,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:03,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:03,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:03,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:03,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 13:23:03,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:03,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:03,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:03,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:03,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 13:23:03,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:03,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 13:23:03,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:03,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:03,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:03,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:03,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 13:23:03,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:03,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:03,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:03,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:03,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:03,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:23:03,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:03,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:23:03,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:03,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:03,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:03,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:03,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:03,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:03,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:03,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:03,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:03,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:03,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:03,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:03,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:23:03,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:03,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:03,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:03,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:03,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:03,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:03,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:23:03,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:03,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:03,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:03,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:03,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:03,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:23:03,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:03,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:03,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:03,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:03,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:03,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:03,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:23:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:03,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:03,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:03,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:03,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:03,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:23:03,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:03,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:03,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:03,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:03,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:03,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:03,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 13:23:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:03,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:03,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:03,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:03,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:03,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:23:03,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 13:23:03,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:03,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:03,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:23:03,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:03,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:23:03,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:03,947 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 155 proven. 100 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2020-09-25 13:23:03,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1218138346] [2020-09-25 13:23:03,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:23:03,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:23:03,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115218414] [2020-09-25 13:23:03,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:23:03,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:03,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:23:03,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:23:03,950 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 9 states.