/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_2calls_8-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:23:21,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:23:21,344 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:23:21,378 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:23:21,379 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:23:21,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:23:21,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:23:21,391 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:23:21,392 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:23:21,395 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:23:21,397 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:23:21,400 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:23:21,400 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:23:21,404 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:23:21,408 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:23:21,410 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:23:21,412 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:23:21,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:23:21,417 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:23:21,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:23:21,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:23:21,426 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:23:21,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:23:21,428 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:23:21,441 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:23:21,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:23:21,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:23:21,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:23:21,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:23:21,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:23:21,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:23:21,451 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:23:21,452 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:23:21,456 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:23:21,457 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:23:21,457 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:23:21,461 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:23:21,461 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:23:21,461 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:23:21,462 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:23:21,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:23:21,467 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 13:23:21,494 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:23:21,494 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:23:21,496 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:23:21,496 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:23:21,496 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:23:21,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:23:21,497 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:23:21,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:23:21,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:23:21,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:23:21,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:23:21,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:23:21,498 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:23:21,498 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:23:21,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:23:21,498 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:23:21,499 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:23:21,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:23:21,499 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:23:21,499 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:23:21,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:23:21,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:23:21,500 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:23:21,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:23:21,500 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:23:21,500 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:23:21,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:23:21,501 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:23:21,501 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:23:21,501 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 13:23:21,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:23:22,008 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:23:22,014 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:23:22,015 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:23:22,016 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:23:22,017 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_8-1.c [2020-09-25 13:23:22,109 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2474240b/f5306187ec12457b96a04b2fef6be7d7/FLAG02af6d8f5 [2020-09-25 13:23:22,670 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:23:22,671 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_8-1.c [2020-09-25 13:23:22,680 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2474240b/f5306187ec12457b96a04b2fef6be7d7/FLAG02af6d8f5 [2020-09-25 13:23:23,012 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2474240b/f5306187ec12457b96a04b2fef6be7d7 [2020-09-25 13:23:23,025 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:23:23,031 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:23:23,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:23:23,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:23:23,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:23:23,041 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:23:23" (1/1) ... [2020-09-25 13:23:23,046 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c00f55c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:23, skipping insertion in model container [2020-09-25 13:23:23,046 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:23:23" (1/1) ... [2020-09-25 13:23:23,057 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:23:23,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:23:23,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:23:23,316 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:23:23,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:23:23,359 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:23:23,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:23 WrapperNode [2020-09-25 13:23:23,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:23:23,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:23:23,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:23:23,362 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:23:23,379 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:23" (1/1) ... [2020-09-25 13:23:23,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:23" (1/1) ... [2020-09-25 13:23:23,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:23" (1/1) ... [2020-09-25 13:23:23,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:23" (1/1) ... [2020-09-25 13:23:23,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:23" (1/1) ... [2020-09-25 13:23:23,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:23" (1/1) ... [2020-09-25 13:23:23,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:23" (1/1) ... [2020-09-25 13:23:23,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:23:23,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:23:23,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:23:23,484 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:23:23,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:23" (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 13:23:23,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:23:23,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:23:23,579 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 13:23:23,579 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 13:23:23,579 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:23:23,579 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:23:23,579 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:23:23,579 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 13:23:23,579 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 13:23:23,580 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:23:23,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:23:23,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:23:23,828 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:23:23,828 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 13:23:23,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:23:23 BoogieIcfgContainer [2020-09-25 13:23:23,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:23:23,835 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:23:23,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:23:23,839 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:23:23,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:23:23" (1/3) ... [2020-09-25 13:23:23,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35320af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:23:23, skipping insertion in model container [2020-09-25 13:23:23,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:23" (2/3) ... [2020-09-25 13:23:23,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35320af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:23:23, skipping insertion in model container [2020-09-25 13:23:23,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:23:23" (3/3) ... [2020-09-25 13:23:23,844 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8-1.c [2020-09-25 13:23:23,857 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:23:23,868 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:23:23,892 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:23:23,945 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:23:23,946 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:23:23,946 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:23:23,946 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:23:23,947 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:23:23,947 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:23:23,947 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:23:23,947 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:23:23,978 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 13:23:23,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 13:23:23,987 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:23,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:23:23,989 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:23,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:23,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 13:23:24,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:24,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185430971] [2020-09-25 13:23:24,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:24,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:24,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:24,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:24,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:23:24,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:24,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 13:23:24,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:24,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:24,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:23:24,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:23:24,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:23:24,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:23:24,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:24,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:24,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:24,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:24,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:24,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:24,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:23:24,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:24,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:24,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:24,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:24,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:24,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:24,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:24,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:24,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:24,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:24,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:24,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:24,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 13:23:24,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:24,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:24,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:23:24,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:24,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:24,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:24,340 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 13:23:24,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185430971] [2020-09-25 13:23:24,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:23:24,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:23:24,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878985846] [2020-09-25 13:23:24,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:23:24,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:24,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:23:24,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:23:24,369 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 13:23:24,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:24,520 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 13:23:24,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:23:24,523 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 13:23:24,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:24,538 INFO L225 Difference]: With dead ends: 58 [2020-09-25 13:23:24,538 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 13:23:24,543 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 13:23:24,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 13:23:24,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 13:23:24,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 13:23:24,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 13:23:24,601 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 13:23:24,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:24,602 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 13:23:24,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:23:24,603 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 13:23:24,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 13:23:24,605 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:24,605 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 13:23:24,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:23:24,606 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:24,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:24,607 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 13:23:24,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:24,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056392233] [2020-09-25 13:23:24,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:24,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:24,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:24,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:24,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 13:23:24,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:24,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 13:23:24,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:24,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:24,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:23:24,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:23:24,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:24,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 13:23:24,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:24,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:24,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:24,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:24,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:24,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:24,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:23:24,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:24,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:24,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:24,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:24,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:24,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:24,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:24,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:24,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:24,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:24,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:24,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 13:23:24,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:24,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:24,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:23:24,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:24,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:23:24,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:24,815 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 13:23:24,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056392233] [2020-09-25 13:23:24,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:23:24,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:23:24,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123699989] [2020-09-25 13:23:24,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:23:24,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:24,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:23:24,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:23:24,820 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 13:23:24,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:24,910 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 13:23:24,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:23:24,911 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 13:23:24,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:24,913 INFO L225 Difference]: With dead ends: 50 [2020-09-25 13:23:24,913 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 13:23:24,914 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 13:23:24,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 13:23:24,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 13:23:24,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 13:23:24,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 13:23:24,925 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 13:23:24,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:24,925 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 13:23:24,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:23:24,925 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 13:23:24,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 13:23:24,927 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:24,928 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:23:24,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:23:24,928 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:24,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:24,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 13:23:24,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:24,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455032673] [2020-09-25 13:23:24,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:24,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:24,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:24,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:25,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:25,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:25,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 13:23:25,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:23:25,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 646 [2020-09-25 13:23:25,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:25,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:25,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:25,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:23:25,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 13:23:25,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:23:25,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:25,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:25,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:25,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:25,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:25,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:23:25,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:25,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:25,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:25,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:25,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:25,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:25,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:25,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:25,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:25,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:25,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:25,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:25,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:23:25,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:23:25,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 323 [2020-09-25 13:23:25,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:25,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:25,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:25,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:25,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:23:25,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:23:26,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:26,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:26,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:26,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:26,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:26,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:26,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:23:26,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:26,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:26,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:26,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:26,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:26,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:23:26,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:23:26,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:26,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:26,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:26,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:26,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:26,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:23:26,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:26,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:26,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:23:26,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:26,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:23:26,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:23:26,099 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:23:26,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [455032673] [2020-09-25 13:23:26,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:23:26,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:23:26,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504434103] [2020-09-25 13:23:26,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:23:26,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:26,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:23:26,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:23:26,114 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 13:23:26,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:26,340 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 13:23:26,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:23:26,342 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 13:23:26,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:26,346 INFO L225 Difference]: With dead ends: 58 [2020-09-25 13:23:26,346 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 13:23:26,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:23:26,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 13:23:26,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 13:23:26,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 13:23:26,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 13:23:26,375 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 13:23:26,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:26,379 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 13:23:26,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:23:26,379 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 13:23:26,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 13:23:26,384 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:26,384 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:23:26,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:23:26,385 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:26,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:26,385 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 13:23:26,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:26,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796516538] [2020-09-25 13:23:26,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:26,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:26,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:26,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:26,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:26,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:27,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:27,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 13:23:27,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:23:27,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 650 [2020-09-25 13:23:27,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:27,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:27,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:27,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:23:27,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 13:23:27,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-09-25 13:23:27,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:27,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:27,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:27,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:27,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:27,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:27,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:23:27,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:27,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:27,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:27,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:27,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:27,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:27,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:27,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:27,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:27,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:27,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:27,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:27,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:27,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:23:27,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:23:27,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 402 [2020-09-25 13:23:27,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:27,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:27,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:27,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:27,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 13:23:27,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:27,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:27,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:27,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:27,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:27,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:27,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:27,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 13:23:27,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:27,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:27,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:23:27,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:27,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:23:27,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:23:27,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:23:27,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:27,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:27,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:27,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:27,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:27,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:23:27,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:27,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:27,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:27,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:27,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:23:27,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:27,617 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:23:27,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796516538] [2020-09-25 13:23:27,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:23:27,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:23:27,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638970258] [2020-09-25 13:23:27,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:23:27,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:27,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:23:27,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:23:27,620 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 13:23:27,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:27,779 INFO L93 Difference]: Finished difference Result 110 states and 146 transitions. [2020-09-25 13:23:27,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:23:27,779 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 13:23:27,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:27,782 INFO L225 Difference]: With dead ends: 110 [2020-09-25 13:23:27,782 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 13:23:27,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:23:27,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 13:23:27,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 13:23:27,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 13:23:27,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-09-25 13:23:27,796 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 35 [2020-09-25 13:23:27,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:27,796 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-09-25 13:23:27,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:23:27,797 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-09-25 13:23:27,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 13:23:27,800 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:27,800 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:23:27,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:23:27,800 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:27,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:27,801 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 13:23:27,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:27,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829655489] [2020-09-25 13:23:27,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:27,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:27,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:27,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:27,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:27,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:28,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:28,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:28,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:32,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:32,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 13:23:32,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:23:32,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:23:32,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:32,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:32,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:32,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:23:32,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 13:23:32,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:32,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:32,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:32,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:32,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:32,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:32,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:32,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:23:32,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:32,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:32,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:32,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:32,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:32,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:32,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:32,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:32,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:32,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:32,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:33,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:33,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:33,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:34,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:35,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:35,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 13:23:35,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:23:35,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2644 [2020-09-25 13:23:35,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:35,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:35,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:35,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:35,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 13:23:35,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:35,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:35,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:35,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:35,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:35,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:35,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:23:35,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:23:35,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 13:23:35,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:35,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:35,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:35,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:35,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:23:35,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:35,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:35,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:35,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:35,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:35,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:35,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:35,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:23:35,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:35,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:35,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:35,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:35,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:35,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:35,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:23:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:35,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:35,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:35,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:35,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:35,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:23:35,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:35,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:35,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:35,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:35,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:35,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:35,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:23:35,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:35,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:35,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:35,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:35,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:35,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:23:35,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:35,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:35,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:23:35,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:35,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:23:35,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:35,677 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 13:23:35,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1829655489] [2020-09-25 13:23:35,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:23:35,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:23:35,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921335229] [2020-09-25 13:23:35,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:23:35,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:35,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:23:35,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:23:35,681 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 7 states. [2020-09-25 13:23:35,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:35,805 INFO L93 Difference]: Finished difference Result 66 states and 81 transitions. [2020-09-25 13:23:35,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:23:35,806 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 13:23:35,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:35,808 INFO L225 Difference]: With dead ends: 66 [2020-09-25 13:23:35,808 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 13:23:35,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:23:35,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 13:23:35,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-09-25 13:23:35,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 13:23:35,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-09-25 13:23:35,819 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 51 [2020-09-25 13:23:35,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:35,820 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-09-25 13:23:35,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:23:35,820 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-09-25 13:23:35,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 13:23:35,823 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:35,823 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:23:35,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:23:35,824 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:35,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:35,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 13:23:35,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:35,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199965166] [2020-09-25 13:23:35,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:35,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:35,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:35,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:35,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:35,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:36,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:36,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:36,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:36,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:36,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:36,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:40,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:40,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 13:23:40,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 13:23:40,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 13:23:40,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:40,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:40,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:23:40,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:23:40,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 13:23:40,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:40,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:40,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:40,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:40,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:40,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:40,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:23:40,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:40,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:40,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:40,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:40,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:40,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:40,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:40,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:40,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:40,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:40,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:40,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:41,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:41,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:41,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:43,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:43,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:45,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:45,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 13:23:45,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:23:45,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:23:45,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:45,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:45,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:23:45,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:23:45,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 13:23:45,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:45,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:45,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:45,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:45,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:45,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:45,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:23:45,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:23:45,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 13:23:45,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:45,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:45,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:45,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:45,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:23:45,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:45,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:45,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:45,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:46,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:46,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:46,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:46,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:23:46,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:46,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:46,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:23:46,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:46,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:23:46,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:46,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:23:46,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:46,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:46,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:46,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:46,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:46,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:23:46,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:46,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:46,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:46,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:46,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:46,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:46,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:23:46,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:46,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:46,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:46,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:46,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:23:46,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:23:46,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 13:23:46,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:46,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:46,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:23:46,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:46,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:23:46,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:46,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:46,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:46,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:46,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:46,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:46,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:23:46,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:46,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:46,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:46,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:46,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:46,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:46,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:23:46,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:46,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:46,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:46,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:46,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:46,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:23:46,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:46,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:46,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:46,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:46,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:46,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:46,184 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 9 proven. 23 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 13:23:46,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199965166] [2020-09-25 13:23:46,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:23:46,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:23:46,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97513588] [2020-09-25 13:23:46,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:23:46,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:46,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:23:46,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:23:46,187 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 10 states. [2020-09-25 13:23:46,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:46,501 INFO L93 Difference]: Finished difference Result 136 states and 191 transitions. [2020-09-25 13:23:46,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:23:46,502 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-09-25 13:23:46,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:46,504 INFO L225 Difference]: With dead ends: 136 [2020-09-25 13:23:46,504 INFO L226 Difference]: Without dead ends: 88 [2020-09-25 13:23:46,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:23:46,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-25 13:23:46,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 76. [2020-09-25 13:23:46,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-25 13:23:46,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 95 transitions. [2020-09-25 13:23:46,519 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 95 transitions. Word has length 67 [2020-09-25 13:23:46,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:46,519 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 95 transitions. [2020-09-25 13:23:46,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:23:46,520 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 95 transitions. [2020-09-25 13:23:46,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-25 13:23:46,523 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:46,526 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:23:46,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:23:46,527 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:46,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:46,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1454118782, now seen corresponding path program 1 times [2020-09-25 13:23:46,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:46,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545781183] [2020-09-25 13:23:46,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:46,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:46,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:46,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:46,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:46,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:47,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:47,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:47,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:47,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:47,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:48,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:48,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:50,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:50,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:51,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:51,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 13:23:51,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 13:23:51,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 13:23:51,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:51,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:51,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:23:51,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:23:51,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 13:23:51,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:51,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:51,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:51,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:51,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:51,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:51,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:51,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:23:51,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:51,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:51,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:51,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:51,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:51,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:51,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:51,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:51,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:51,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:51,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:51,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:51,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:51,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:51,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:51,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:52,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:54,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:55,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:56,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:56,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:56,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:56,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:23:56,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 13:23:56,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 13:23:56,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:56,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:56,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:23:56,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:56,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 13:23:56,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:56,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:56,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:56,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:56,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:56,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:23:56,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:56,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 13:23:56,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:56,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:56,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:56,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:56,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:23:56,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:56,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:56,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:56,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:56,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:56,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:56,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:56,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:23:56,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:56,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:56,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:56,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:56,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:56,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:56,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:23:56,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:56,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:56,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:56,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:56,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:56,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:23:56,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:56,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:56,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:56,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:56,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:56,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:56,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:23:56,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:56,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:56,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:56,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:56,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:56,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:23:56,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:23:56,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-09-25 13:23:56,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:56,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:56,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:23:56,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:56,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:23:56,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:56,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:56,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:56,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:56,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:56,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:56,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:56,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:23:56,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:56,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:56,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:56,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:56,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:56,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:56,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:23:56,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:56,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:56,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:56,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:56,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:56,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:23:56,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:56,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:56,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:23:56,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:56,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:23:56,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:56,926 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 28 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 13:23:56,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545781183] [2020-09-25 13:23:56,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:23:56,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:23:56,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285771603] [2020-09-25 13:23:56,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:23:56,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:56,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:23:56,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:23:56,929 INFO L87 Difference]: Start difference. First operand 76 states and 95 transitions. Second operand 9 states. [2020-09-25 13:23:57,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:57,113 INFO L93 Difference]: Finished difference Result 98 states and 124 transitions. [2020-09-25 13:23:57,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:23:57,114 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-09-25 13:23:57,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:57,115 INFO L225 Difference]: With dead ends: 98 [2020-09-25 13:23:57,116 INFO L226 Difference]: Without dead ends: 92 [2020-09-25 13:23:57,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:23:57,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-25 13:23:57,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 86. [2020-09-25 13:23:57,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-25 13:23:57,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 111 transitions. [2020-09-25 13:23:57,127 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 111 transitions. Word has length 68 [2020-09-25 13:23:57,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:57,128 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 111 transitions. [2020-09-25 13:23:57,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:23:57,128 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 111 transitions. [2020-09-25 13:23:57,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 13:23:57,130 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:57,130 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:23:57,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 13:23:57,131 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:57,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:57,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1208671938, now seen corresponding path program 1 times [2020-09-25 13:23:57,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:57,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279290444] [2020-09-25 13:23:57,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:57,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:57,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:57,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:57,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:57,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:57,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:57,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:57,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:59,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:59,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:59,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:59,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:59,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:00,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:00,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:02,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:02,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 13:24:02,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 13:24:02,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 13:24:02,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:02,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:02,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:24:02,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 13:24:02,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 13:24:02,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:02,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:24:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:02,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:02,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:02,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:24:02,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:02,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:24:02,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:02,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:02,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:24:02,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:02,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:24:02,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:02,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:24:02,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:02,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:02,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:02,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:02,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:02,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:02,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:02,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:02,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:02,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:03,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:03,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:07,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:07,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 13:24:07,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 13:24:07,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:24:07,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:07,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:07,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:24:07,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:24:07,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 13:24:07,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:07,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:24:07,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:07,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:07,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:07,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:07,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:07,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:24:07,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:24:07,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-09-25 13:24:07,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:07,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:07,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:24:07,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:07,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 13:24:07,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:07,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:24:07,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:07,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:07,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:07,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:24:07,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:07,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 13:24:07,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:07,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:07,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:24:07,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:07,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:24:07,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:07,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:24:07,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:07,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:07,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:07,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:24:07,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:07,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:24:07,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:07,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:07,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:24:07,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:07,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:24:07,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:07,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 13:24:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:07,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:07,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:07,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:07,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:07,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:07,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:07,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:08,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:08,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:24:08,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:24:08,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 600 [2020-09-25 13:24:08,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:08,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:08,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:24:08,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:24:08,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 13:24:08,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:08,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:24:08,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:08,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:08,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:08,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:24:08,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:08,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:24:08,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:08,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:08,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:24:08,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:08,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:24:08,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:08,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:24:08,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:08,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:08,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:08,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:24:08,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:08,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:24:08,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:08,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:08,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:24:08,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:08,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:24:08,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:08,248 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-25 13:24:08,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1279290444] [2020-09-25 13:24:08,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:24:08,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:24:08,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719149615] [2020-09-25 13:24:08,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:24:08,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:24:08,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:24:08,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:24:08,250 INFO L87 Difference]: Start difference. First operand 86 states and 111 transitions. Second operand 9 states. [2020-09-25 13:24:08,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:24:08,451 INFO L93 Difference]: Finished difference Result 194 states and 285 transitions. [2020-09-25 13:24:08,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:24:08,451 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-09-25 13:24:08,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:24:08,453 INFO L225 Difference]: With dead ends: 194 [2020-09-25 13:24:08,453 INFO L226 Difference]: Without dead ends: 114 [2020-09-25 13:24:08,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:24:08,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-25 13:24:08,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 110. [2020-09-25 13:24:08,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-25 13:24:08,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 145 transitions. [2020-09-25 13:24:08,467 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 145 transitions. Word has length 71 [2020-09-25 13:24:08,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:24:08,468 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 145 transitions. [2020-09-25 13:24:08,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:24:08,468 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 145 transitions. [2020-09-25 13:24:08,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-25 13:24:08,470 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:24:08,470 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:24:08,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 13:24:08,471 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:24:08,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:24:08,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1957044445, now seen corresponding path program 1 times [2020-09-25 13:24:08,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:24:08,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700401043] [2020-09-25 13:24:08,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:24:08,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:08,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:08,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:08,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:08,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:08,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:08,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:08,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:09,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:10,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:10,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:10,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:10,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:10,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:10,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:11,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:11,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:12,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:12,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:13,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:13,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-25 13:24:13,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-25 13:24:13,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 13:24:13,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:13,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:13,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:24:13,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 13:24:13,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 13:24:13,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:13,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:24:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:13,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:13,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:13,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:24:13,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:24:13,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:24:13,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:13,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:13,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:24:13,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:24:13,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:24:13,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:24:13,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:24:13,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:13,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:13,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:13,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:13,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:13,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:13,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:13,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:14,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:14,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:14,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:14,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:14,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:14,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:14,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:14,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:15,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:18,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:24:18,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-25 13:24:18,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-25 13:24:18,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 13:24:18,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:24:18,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:24:18,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:24:18,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:24:18,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 13:24:18,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:24:18,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:24:18,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:24:18,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:18,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:18,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:24:18,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking...