/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=0.1 --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_10-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:59:41,385 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:59:41,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:59:41,433 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:59:41,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:59:41,445 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:59:41,447 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:59:41,451 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:59:41,454 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:59:41,457 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:59:41,458 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:59:41,459 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:59:41,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:59:41,463 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:59:41,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:59:41,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:59:41,468 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:59:41,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:59:41,471 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:59:41,479 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:59:41,482 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:59:41,483 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:59:41,484 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:59:41,485 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:59:41,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:59:41,489 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:59:41,489 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:59:41,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:59:41,492 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:59:41,493 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:59:41,494 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:59:41,494 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:59:41,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:59:41,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:59:41,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:59:41,498 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:59:41,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:59:41,499 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:59:41,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:59:41,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:59:41,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:59:41,502 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 09:59:41,549 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:59:41,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:59:41,551 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:59:41,552 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:59:41,552 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:59:41,552 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:59:41,553 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:59:41,553 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:59:41,553 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:59:41,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:59:41,554 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:59:41,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:59:41,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:59:41,555 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:59:41,555 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:59:41,556 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:59:41,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:59:41,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:59:41,556 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:59:41,556 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:59:41,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:59:41,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:59:41,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:59:41,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:59:41,557 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:59:41,558 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:59:41,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:59:41,558 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:59:41,558 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:59:41,558 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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-09-25 09:59:42,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:59:42,037 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:59:42,042 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:59:42,044 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:59:42,044 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:59:42,046 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_10-2.c [2020-09-25 09:59:42,132 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c08d8cd11/a18277903ed54841a12a67ccc99aa7d4/FLAG8dcadda03 [2020-09-25 09:59:42,665 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:59:42,666 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_10-2.c [2020-09-25 09:59:42,674 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c08d8cd11/a18277903ed54841a12a67ccc99aa7d4/FLAG8dcadda03 [2020-09-25 09:59:43,007 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c08d8cd11/a18277903ed54841a12a67ccc99aa7d4 [2020-09-25 09:59:43,019 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:59:43,024 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:59:43,025 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:59:43,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:59:43,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:59:43,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:59:43" (1/1) ... [2020-09-25 09:59:43,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51d7e22e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:59:43, skipping insertion in model container [2020-09-25 09:59:43,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:59:43" (1/1) ... [2020-09-25 09:59:43,044 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:59:43,071 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:59:43,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:59:43,277 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:59:43,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:59:43,310 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:59:43,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:59:43 WrapperNode [2020-09-25 09:59:43,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:59:43,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:59:43,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:59:43,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:59:43,325 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:59:43" (1/1) ... [2020-09-25 09:59:43,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:59:43" (1/1) ... [2020-09-25 09:59:43,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:59:43" (1/1) ... [2020-09-25 09:59:43,416 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:59:43" (1/1) ... [2020-09-25 09:59:43,421 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:59:43" (1/1) ... [2020-09-25 09:59:43,424 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:59:43" (1/1) ... [2020-09-25 09:59:43,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:59:43" (1/1) ... [2020-09-25 09:59:43,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:59:43,438 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:59:43,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:59:43,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:59:43,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:59:43" (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 09:59:43,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:59:43,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:59:43,514 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 09:59:43,514 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 09:59:43,514 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:59:43,514 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:59:43,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:59:43,515 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 09:59:43,515 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 09:59:43,515 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:59:43,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:59:43,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:59:43,745 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:59:43,746 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 09:59:43,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:59:43 BoogieIcfgContainer [2020-09-25 09:59:43,751 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:59:43,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:59:43,753 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:59:43,757 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:59:43,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:59:43" (1/3) ... [2020-09-25 09:59:43,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6795e57e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:59:43, skipping insertion in model container [2020-09-25 09:59:43,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:59:43" (2/3) ... [2020-09-25 09:59:43,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6795e57e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:59:43, skipping insertion in model container [2020-09-25 09:59:43,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:59:43" (3/3) ... [2020-09-25 09:59:43,761 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_10-2.c [2020-09-25 09:59:43,772 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:59:43,783 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:59:43,832 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:59:43,867 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:59:43,867 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:59:43,867 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:59:43,867 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:59:43,868 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:59:43,868 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:59:43,868 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:59:43,868 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:59:43,894 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 09:59:43,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 09:59:43,906 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:59:43,907 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:59:43,907 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:59:43,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:59:43,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 09:59:43,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:59:43,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334950315] [2020-09-25 09:59:43,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:59:44,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:44,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:44,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:44,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:44,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:59:44,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:59:44,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-09-25 09:59:44,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:44,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:44,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:59:44,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 09:59:44,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:59:44,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:59:44,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:59:44,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:44,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:44,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:44,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:59:44,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:44,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:59:44,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:44,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:44,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:44,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:44,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:44,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:44,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 09:59:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:44,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:44,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:44,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:59:44,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:44,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 09:59:44,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:44,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:44,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:59:44,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:44,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:59:44,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:44,383 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 09:59:44,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334950315] [2020-09-25 09:59:44,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:59:44,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 09:59:44,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811710980] [2020-09-25 09:59:44,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:59:44,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:59:44,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:59:44,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:59:44,417 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 09:59:44,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:59:44,504 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 09:59:44,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:59:44,507 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 09:59:44,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:59:44,521 INFO L225 Difference]: With dead ends: 58 [2020-09-25 09:59:44,521 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 09:59:44,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 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 09:59:44,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 09:59:44,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 09:59:44,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 09:59:44,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 09:59:44,586 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 09:59:44,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:59:44,587 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 09:59:44,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:59:44,587 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 09:59:44,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 09:59:44,590 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:59:44,590 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 09:59:44,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:59:44,591 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:59:44,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:59:44,592 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 09:59:44,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:59:44,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1790733442] [2020-09-25 09:59:44,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:59:44,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:44,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:44,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:44,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:44,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 09:59:44,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:59:44,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-09-25 09:59:44,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:44,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:44,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:59:44,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 09:59:44,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:59:44,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:44,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:59:44,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:44,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:44,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:44,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:59:44,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:44,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:59:44,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:44,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:44,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:44,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:44,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:44,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:44,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 09:59:44,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:44,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:44,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:44,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:59:44,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:44,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 09:59:44,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:44,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:44,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:59:44,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 09:59:44,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:59:44,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:44,920 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 09:59:44,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1790733442] [2020-09-25 09:59:44,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:59:44,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 09:59:44,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997059813] [2020-09-25 09:59:44,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:59:44,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:59:44,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:59:44,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:59:44,924 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 09:59:45,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:59:45,005 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 09:59:45,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:59:45,008 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 09:59:45,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:59:45,010 INFO L225 Difference]: With dead ends: 50 [2020-09-25 09:59:45,010 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 09:59:45,013 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 09:59:45,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 09:59:45,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 09:59:45,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 09:59:45,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 09:59:45,031 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 09:59:45,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:59:45,032 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 09:59:45,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:59:45,032 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 09:59:45,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 09:59:45,036 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:59:45,037 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 09:59:45,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:59:45,037 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:59:45,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:59:45,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 09:59:45,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:59:45,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [327770431] [2020-09-25 09:59:45,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:59:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:45,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:45,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:45,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:45,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:46,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:46,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 09:59:46,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:59:46,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1768 [2020-09-25 09:59:46,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:46,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:46,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:59:46,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 09:59:46,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 09:59:46,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:46,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:59:46,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:46,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:46,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:46,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:59:46,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:46,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:59:46,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:46,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:46,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:46,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:46,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:46,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:46,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 09:59:46,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:46,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:46,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:46,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:47,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:47,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 09:59:47,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:59:47,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-25 09:59:47,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:47,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:47,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:59:47,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 09:59:47,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 09:59:47,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:47,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:59:47,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:47,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:47,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:47,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:59:47,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:47,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 09:59:47,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:47,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:47,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:59:47,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:47,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:59:47,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:47,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 09:59:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:47,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:47,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:47,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:59:47,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:47,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 09:59:47,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:47,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:47,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:59:47,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:47,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:59:47,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:47,146 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 09:59:47,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [327770431] [2020-09-25 09:59:47,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:59:47,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:59:47,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106921118] [2020-09-25 09:59:47,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:59:47,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:59:47,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:59:47,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:59:47,155 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 09:59:47,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:59:47,276 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 09:59:47,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:59:47,276 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 09:59:47,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:59:47,279 INFO L225 Difference]: With dead ends: 58 [2020-09-25 09:59:47,279 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 09:59:47,280 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 09:59:47,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 09:59:47,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 09:59:47,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 09:59:47,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 09:59:47,291 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 09:59:47,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:59:47,291 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 09:59:47,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:59:47,291 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 09:59:47,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 09:59:47,293 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:59:47,294 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 09:59:47,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:59:47,294 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:59:47,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:59:47,295 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 09:59:47,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:59:47,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606998645] [2020-09-25 09:59:47,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:59:47,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:47,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:47,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:47,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:47,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:47,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:49,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:49,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 09:59:49,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:59:49,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1710 [2020-09-25 09:59:49,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:49,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:49,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:59:49,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 09:59:49,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 09:59:49,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:49,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:59:49,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:49,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:49,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:49,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:59:49,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:49,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:59:49,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:49,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:49,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:49,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:49,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:49,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:49,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 09:59:49,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:49,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:49,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:49,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:49,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:49,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:49,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 09:59:49,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:59:49,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 465 [2020-09-25 09:59:49,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:49,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:49,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:59:49,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 09:59:49,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 09:59:49,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:49,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:59:49,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:49,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:49,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:49,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:59:49,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:49,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 09:59:49,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:49,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:49,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:59:49,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:49,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:59:49,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:59:49,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 09:59:49,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:49,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:49,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:49,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:59:49,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:49,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 09:59:49,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:49,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:49,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:59:49,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:49,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:59:49,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:49,616 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 09:59:49,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606998645] [2020-09-25 09:59:49,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:59:49,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:59:49,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295737813] [2020-09-25 09:59:49,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:59:49,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:59:49,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:59:49,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:59:49,619 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 09:59:49,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:59:49,749 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2020-09-25 09:59:49,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:59:49,750 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 09:59:49,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:59:49,752 INFO L225 Difference]: With dead ends: 72 [2020-09-25 09:59:49,752 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 09:59:49,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:59:49,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 09:59:49,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 52. [2020-09-25 09:59:49,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 09:59:49,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2020-09-25 09:59:49,764 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 35 [2020-09-25 09:59:49,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:59:49,764 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2020-09-25 09:59:49,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:59:49,765 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2020-09-25 09:59:49,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 09:59:49,767 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:59:49,767 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 09:59:49,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:59:49,767 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:59:49,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:59:49,768 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 09:59:49,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:59:49,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931290413] [2020-09-25 09:59:49,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:59:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:49,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:49,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:49,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:49,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:49,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:50,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:50,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:53,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:54,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:54,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 09:59:54,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:59:54,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 09:59:54,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:54,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:54,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:59:54,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 09:59:54,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 09:59:54,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:54,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:59:54,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:54,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:54,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:54,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:59:54,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:54,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:59:54,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:54,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:54,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:54,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:54,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:54,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:54,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 09:59:54,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:54,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:54,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:54,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:54,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:55,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:55,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:57,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:58,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:58,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 09:59:58,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:59:58,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3647 [2020-09-25 09:59:58,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:58,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:58,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:59:58,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 09:59:58,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 09:59:58,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:58,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:59:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:58,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:58,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:58,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:58,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 09:59:58,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:59:58,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 09:59:58,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:58,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:58,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:59:58,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:58,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 09:59:58,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:58,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:59:58,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:58,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:58,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:58,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:59:58,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:58,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:59:58,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:58,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:58,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:58,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:58,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:58,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:58,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 09:59:58,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:58,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:58,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:58,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:59:58,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:58,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:59:58,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:58,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:58,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:58,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:58,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:58,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:58,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 09:59:58,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:58,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:58,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:58,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:59:58,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:58,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 09:59:58,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:58,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:58,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:59:58,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:58,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:59:58,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:58,657 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 09:59:58,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931290413] [2020-09-25 09:59:58,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:59:58,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:59:58,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346787066] [2020-09-25 09:59:58,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:59:58,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:59:58,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:59:58,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:59:58,660 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand 7 states. [2020-09-25 09:59:58,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:59:58,775 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2020-09-25 09:59:58,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:59:58,776 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 09:59:58,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:59:58,778 INFO L225 Difference]: With dead ends: 64 [2020-09-25 09:59:58,778 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 09:59:58,779 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 09:59:58,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 09:59:58,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2020-09-25 09:59:58,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 09:59:58,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 09:59:58,788 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 51 [2020-09-25 09:59:58,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:59:58,789 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 09:59:58,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:59:58,789 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 09:59:58,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 09:59:58,791 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:59:58,792 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 09:59:58,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:59:58,792 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:59:58,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:59:58,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 09:59:58,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:59:58,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119719505] [2020-09-25 09:59:58,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:59:58,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:58,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:58,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:58,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:58,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:59,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:59,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:59,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:59,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:59,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:59,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:03,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:03,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 10:00:03,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 10:00:03,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 10:00:03,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:03,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:03,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:00:03,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:00:03,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 10:00:03,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:03,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:00:03,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:03,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:03,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:03,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:00:03,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:03,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:00:03,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:03,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:03,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:03,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:03,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:03,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:03,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:00:03,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:03,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:03,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:03,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:03,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:03,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:04,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:04,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:05,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:05,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:08,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:08,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 10:00:08,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:00:08,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 10:00:08,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:08,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:08,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:00:08,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 10:00:08,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 10:00:08,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:08,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:08,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:08,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:08,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:08,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 10:00:08,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:00:08,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 10:00:08,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:08,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:08,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:00:08,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:08,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 10:00:08,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:09,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:09,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:09,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:09,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:09,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:09,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:00:09,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:09,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:09,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:00:09,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:09,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:00:09,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:09,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 10:00:09,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:09,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:09,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:09,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:09,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:09,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:00:09,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:09,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:09,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:00:09,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:09,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:00:09,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:09,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 10:00:09,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:09,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:09,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:09,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:09,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 10:00:09,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:00:09,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 10:00:09,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:09,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:09,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:00:09,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:00:09,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 10:00:09,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:09,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:09,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:09,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:09,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:09,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:09,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:09,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 10:00:09,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:09,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:09,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:00:09,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:09,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:00:09,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:09,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 10:00:09,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:09,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:09,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:09,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:09,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:09,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:00:09,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:09,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:09,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:00:09,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:09,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:00:09,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:09,249 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 17 proven. 15 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 10:00:09,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [119719505] [2020-09-25 10:00:09,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:00:09,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 10:00:09,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778219859] [2020-09-25 10:00:09,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 10:00:09,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:00:09,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 10:00:09,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:00:09,253 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 12 states. [2020-09-25 10:00:09,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:00:09,633 INFO L93 Difference]: Finished difference Result 104 states and 135 transitions. [2020-09-25 10:00:09,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 10:00:09,634 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 67 [2020-09-25 10:00:09,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:00:09,636 INFO L225 Difference]: With dead ends: 104 [2020-09-25 10:00:09,636 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 10:00:09,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:00:09,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 10:00:09,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-09-25 10:00:09,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 10:00:09,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2020-09-25 10:00:09,658 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 67 [2020-09-25 10:00:09,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:00:09,659 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2020-09-25 10:00:09,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 10:00:09,659 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2020-09-25 10:00:09,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 10:00:09,670 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:00:09,670 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:00:09,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:00:09,671 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:00:09,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:00:09,671 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-25 10:00:09,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:00:09,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892684702] [2020-09-25 10:00:09,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:00:09,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:09,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:09,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:09,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:09,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:09,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:09,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:10,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:10,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:11,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:12,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:13,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:13,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:14,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:14,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:14,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 10:00:14,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 10:00:14,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 10:00:14,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:14,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:14,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:00:14,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:00:14,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 10:00:14,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:14,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:00:14,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:14,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:14,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:14,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:00:14,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:14,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:00:14,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:14,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:14,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:14,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:14,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:14,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:14,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:00:14,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:14,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:14,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:14,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:14,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:14,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:14,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:14,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:17,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:17,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:18,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:18,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:19,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:19,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:19,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:19,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 10:00:19,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 10:00:19,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:00:19,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:19,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:19,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:00:19,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:00:19,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 10:00:19,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:19,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:19,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:19,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:19,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:19,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 10:00:19,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:19,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 10:00:19,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:19,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:19,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:00:19,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:19,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 10:00:19,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:19,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:19,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:19,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:19,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:19,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:00:19,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:19,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:00:19,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:19,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:19,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:19,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:19,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:19,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:19,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:00:19,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:19,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:19,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:19,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:19,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:19,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:00:19,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:19,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:19,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:19,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:19,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:19,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:19,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:00:19,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:19,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:19,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:20,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:20,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 10:00:20,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:00:20,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-09-25 10:00:20,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:20,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:20,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:00:20,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:20,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 10:00:20,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:20,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:20,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:20,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:20,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:20,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:00:20,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:20,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:00:20,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:20,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:20,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:00:20,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:20,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:00:20,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:20,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:00:20,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:20,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:20,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:20,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:20,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:20,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:00:20,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:20,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:20,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:00:20,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:20,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:00:20,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:20,078 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 28 proven. 7 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 10:00:20,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892684702] [2020-09-25 10:00:20,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:00:20,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:00:20,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698491608] [2020-09-25 10:00:20,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:00:20,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:00:20,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:00:20,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:00:20,083 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand 9 states. [2020-09-25 10:00:20,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:00:20,259 INFO L93 Difference]: Finished difference Result 80 states and 104 transitions. [2020-09-25 10:00:20,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 10:00:20,260 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-09-25 10:00:20,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:00:20,262 INFO L225 Difference]: With dead ends: 80 [2020-09-25 10:00:20,262 INFO L226 Difference]: Without dead ends: 74 [2020-09-25 10:00:20,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:00:20,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-25 10:00:20,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 68. [2020-09-25 10:00:20,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-25 10:00:20,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 89 transitions. [2020-09-25 10:00:20,273 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 89 transitions. Word has length 69 [2020-09-25 10:00:20,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:00:20,274 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 89 transitions. [2020-09-25 10:00:20,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:00:20,274 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 89 transitions. [2020-09-25 10:00:20,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 10:00:20,277 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:00:20,277 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 10:00:20,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 10:00:20,277 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:00:20,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:00:20,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1208671938, now seen corresponding path program 1 times [2020-09-25 10:00:20,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:00:20,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48827683] [2020-09-25 10:00:20,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:00:20,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:20,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:20,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:20,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:20,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:20,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:20,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:20,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:21,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:22,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:22,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:22,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:22,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:22,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:23,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:23,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:25,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:25,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 10:00:25,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 10:00:25,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 10:00:25,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:25,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:25,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:00:25,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:00:25,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 10:00:25,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:25,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:00:25,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:25,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:25,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:25,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:00:25,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:25,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:00:25,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:25,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:25,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:25,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:25,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:25,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:25,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:00:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:25,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:25,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:25,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:25,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:25,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:25,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:25,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:25,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:25,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:26,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:26,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:30,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:30,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 10:00:30,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 10:00:30,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 10:00:30,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:30,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:30,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:00:30,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 10:00:30,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 10:00:30,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:30,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:30,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:30,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:30,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:30,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:30,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:30,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:00:30,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:00:30,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-09-25 10:00:30,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:30,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:30,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:00:30,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:30,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 10:00:30,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:30,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:30,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:30,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:30,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:30,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:00:30,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:30,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 10:00:30,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:30,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:30,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:00:30,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:30,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:00:30,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:30,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:00:30,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:30,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:30,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:30,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:00:30,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:30,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:00:30,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:30,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:30,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:00:30,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:30,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:00:30,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:30,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 10:00:30,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:30,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:30,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:30,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:30,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:30,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:30,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:30,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:31,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:31,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:00:31,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:00:31,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1122 [2020-09-25 10:00:31,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:31,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:31,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:00:31,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:00:31,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 10:00:31,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:31,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:31,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:31,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:31,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:31,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:00:31,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:31,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:00:31,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:31,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:31,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:00:31,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:31,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:00:31,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:31,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:00:31,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:31,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:31,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:31,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:00:31,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:31,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:00:31,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:31,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:31,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:00:31,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:31,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:00:31,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:31,900 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 10:00:31,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48827683] [2020-09-25 10:00:31,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:00:31,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:00:31,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634424554] [2020-09-25 10:00:31,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:00:31,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:00:31,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:00:31,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:00:31,902 INFO L87 Difference]: Start difference. First operand 68 states and 89 transitions. Second operand 11 states. [2020-09-25 10:00:32,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:00:32,282 INFO L93 Difference]: Finished difference Result 172 states and 274 transitions. [2020-09-25 10:00:32,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 10:00:32,284 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-09-25 10:00:32,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:00:32,286 INFO L225 Difference]: With dead ends: 172 [2020-09-25 10:00:32,287 INFO L226 Difference]: Without dead ends: 105 [2020-09-25 10:00:32,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:00:32,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-09-25 10:00:32,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 94. [2020-09-25 10:00:32,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-25 10:00:32,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 128 transitions. [2020-09-25 10:00:32,322 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 128 transitions. Word has length 71 [2020-09-25 10:00:32,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:00:32,322 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 128 transitions. [2020-09-25 10:00:32,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:00:32,322 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 128 transitions. [2020-09-25 10:00:32,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-09-25 10:00:32,326 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:00:32,326 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:00:32,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 10:00:32,326 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:00:32,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:00:32,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1768747964, now seen corresponding path program 1 times [2020-09-25 10:00:32,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:00:32,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065884010] [2020-09-25 10:00:32,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:00:32,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:32,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:32,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:32,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:32,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:32,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:32,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:33,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:33,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:37,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:37,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 10:00:37,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:00:37,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 10:00:37,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:37,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:37,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:00:37,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:00:37,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 10:00:37,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:37,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:00:37,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:37,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:37,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:37,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:00:37,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:37,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:00:37,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:37,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:37,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:37,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:37,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:37,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:37,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:00:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:37,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:37,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:37,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:37,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:37,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:37,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking...