/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=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_8-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:15:41,598 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:15:41,601 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:15:41,627 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:15:41,628 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:15:41,629 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:15:41,630 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:15:41,632 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:15:41,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:15:41,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:15:41,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:15:41,638 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:15:41,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:15:41,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:15:41,640 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:15:41,642 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:15:41,643 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:15:41,644 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:15:41,645 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:15:41,648 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:15:41,649 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:15:41,651 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:15:41,652 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:15:41,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:15:41,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:15:41,659 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:15:41,659 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:15:41,660 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:15:41,660 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:15:41,665 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:15:41,665 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:15:41,666 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:15:41,667 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:15:41,667 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:15:41,668 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:15:41,669 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:15:41,669 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:15:41,670 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:15:41,670 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:15:41,671 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:15:41,672 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:15:41,673 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 12:15:41,699 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:15:41,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:15:41,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:15:41,701 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:15:41,701 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:15:41,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:15:41,701 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:15:41,702 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:15:41,702 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:15:41,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:15:41,702 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:15:41,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:15:41,703 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:15:41,703 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:15:41,703 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:15:41,703 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:15:41,703 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:15:41,704 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:15:41,704 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:15:41,704 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:15:41,704 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:15:41,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:15:41,705 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:15:41,705 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:15:41,705 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:15:41,705 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:15:41,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:15:41,706 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:15:41,706 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:15:41,706 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:15:42,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:15:42,252 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:15:42,259 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:15:42,261 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:15:42,263 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:15:42,264 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_8-1.c [2020-09-25 12:15:42,336 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1bad1640/910ef9ccbaf449519c4b3d926b5018b9/FLAG7f85729d8 [2020-09-25 12:15:42,925 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:15:42,926 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_8-1.c [2020-09-25 12:15:42,936 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1bad1640/910ef9ccbaf449519c4b3d926b5018b9/FLAG7f85729d8 [2020-09-25 12:15:43,220 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1bad1640/910ef9ccbaf449519c4b3d926b5018b9 [2020-09-25 12:15:43,236 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:15:43,242 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:15:43,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:15:43,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:15:43,248 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:15:43,250 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:15:43" (1/1) ... [2020-09-25 12:15:43,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e85a8a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:43, skipping insertion in model container [2020-09-25 12:15:43,254 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:15:43" (1/1) ... [2020-09-25 12:15:43,264 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:15:43,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:15:43,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:15:43,511 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:15:43,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:15:43,560 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:15:43,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:43 WrapperNode [2020-09-25 12:15:43,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:15:43,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:15:43,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:15:43,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:15:43,582 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:43" (1/1) ... [2020-09-25 12:15:43,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:43" (1/1) ... [2020-09-25 12:15:43,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:43" (1/1) ... [2020-09-25 12:15:43,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:43" (1/1) ... [2020-09-25 12:15:43,675 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:43" (1/1) ... [2020-09-25 12:15:43,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:43" (1/1) ... [2020-09-25 12:15:43,684 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:43" (1/1) ... [2020-09-25 12:15:43,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:15:43,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:15:43,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:15:43,691 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:15:43,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:43" (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 12:15:43,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:15:43,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:15:43,773 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 12:15:43,773 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 12:15:43,773 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:15:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:15:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:15:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 12:15:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 12:15:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:15:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:15:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:15:44,018 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:15:44,018 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 12:15:44,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:15:44 BoogieIcfgContainer [2020-09-25 12:15:44,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:15:44,027 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:15:44,027 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:15:44,031 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:15:44,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:15:43" (1/3) ... [2020-09-25 12:15:44,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d4cc707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:15:44, skipping insertion in model container [2020-09-25 12:15:44,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:43" (2/3) ... [2020-09-25 12:15:44,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d4cc707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:15:44, skipping insertion in model container [2020-09-25 12:15:44,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:15:44" (3/3) ... [2020-09-25 12:15:44,036 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8-1.c [2020-09-25 12:15:44,052 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:15:44,064 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:15:44,092 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:15:44,130 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:15:44,131 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:15:44,131 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:15:44,131 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:15:44,131 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:15:44,131 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:15:44,131 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:15:44,132 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:15:44,159 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 12:15:44,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 12:15:44,169 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:44,170 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:15:44,172 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:44,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:44,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 12:15:44,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:44,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539041521] [2020-09-25 12:15:44,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:44,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:44,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:44,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:44,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:15:44,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:44,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 12:15:44,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:44,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:44,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:15:44,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:44,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:15:44,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:15:44,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:44,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:44,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:44,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:44,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:44,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:44,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:15:44,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:44,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:44,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:44,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:44,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:44,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:44,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:44,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:44,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:44,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:44,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:44,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 12:15:44,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:44,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:44,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:15:44,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:15:44,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:15:44,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:44,530 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 12:15:44,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539041521] [2020-09-25 12:15:44,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:15:44,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:15:44,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530034012] [2020-09-25 12:15:44,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:15:44,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:44,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:15:44,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:15:44,560 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 12:15:44,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:44,699 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 12:15:44,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:15:44,701 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 12:15:44,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:44,717 INFO L225 Difference]: With dead ends: 58 [2020-09-25 12:15:44,717 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 12:15:44,722 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 12:15:44,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 12:15:44,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 12:15:44,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 12:15:44,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 12:15:44,788 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 12:15:44,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:44,789 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 12:15:44,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:15:44,789 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 12:15:44,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 12:15:44,792 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:44,792 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 12:15:44,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:15:44,793 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:44,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:44,794 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 12:15:44,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:44,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698149776] [2020-09-25 12:15:44,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:44,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:44,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:44,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:44,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 12:15:44,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:44,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 12:15:44,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:44,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:44,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:15:44,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:44,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:15:44,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:44,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:44,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:44,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:44,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:44,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:44,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:44,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:15:44,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:44,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:44,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:44,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:44,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:44,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:44,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:44,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:44,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:44,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:15:44,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:44,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 12:15:44,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:44,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:44,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:15:44,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:15:44,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:15:44,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:44,997 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 12:15:44,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698149776] [2020-09-25 12:15:44,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:15:44,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:15:44,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275019919] [2020-09-25 12:15:45,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:15:45,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:45,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:15:45,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:15:45,002 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 12:15:45,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:45,083 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 12:15:45,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:15:45,084 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 12:15:45,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:45,085 INFO L225 Difference]: With dead ends: 50 [2020-09-25 12:15:45,086 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 12:15:45,087 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 12:15:45,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 12:15:45,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 12:15:45,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 12:15:45,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 12:15:45,097 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 12:15:45,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:45,098 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 12:15:45,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:15:45,098 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 12:15:45,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 12:15:45,100 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:45,100 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 12:15:45,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:15:45,101 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:45,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:45,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 12:15:45,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:45,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041139028] [2020-09-25 12:15:45,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:45,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:45,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:45,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:45,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:45,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:45,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 12:15:45,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:15:45,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 634 [2020-09-25 12:15:45,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:45,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:45,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:45,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:45,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 12:15:45,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:15:45,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:45,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:45,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:45,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:45,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:45,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:15:45,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:45,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:45,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:45,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:45,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:45,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:45,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:45,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:45,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:45,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:45,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:46,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:46,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:15:46,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:15:46,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-09-25 12:15:46,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:46,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:46,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:46,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:15:46,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:15:46,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:46,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:46,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:46,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:46,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:46,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:46,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:46,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:15:46,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:46,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:46,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:46,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:46,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:15:46,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:46,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:15:46,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:46,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:46,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:46,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:46,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:46,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:15:46,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:46,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:46,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:15:46,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:46,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:15:46,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:46,090 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 12:15:46,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041139028] [2020-09-25 12:15:46,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:15:46,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:15:46,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255614665] [2020-09-25 12:15:46,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:15:46,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:46,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:15:46,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:15:46,093 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 12:15:46,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:46,225 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 12:15:46,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:15:46,225 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 12:15:46,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:46,228 INFO L225 Difference]: With dead ends: 58 [2020-09-25 12:15:46,228 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 12:15:46,229 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 12:15:46,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 12:15:46,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 12:15:46,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 12:15:46,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 12:15:46,240 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 12:15:46,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:46,241 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 12:15:46,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:15:46,241 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 12:15:46,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 12:15:46,244 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:46,244 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 12:15:46,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:15:46,244 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:46,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:46,245 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 12:15:46,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:46,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957267139] [2020-09-25 12:15:46,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:46,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:46,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:46,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:46,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:46,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:46,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 12:15:46,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:15:46,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 562 [2020-09-25 12:15:46,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:46,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:46,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:46,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:46,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 12:15:46,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:15:46,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:46,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:46,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:46,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:46,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:46,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:15:46,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:46,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:46,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:46,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:46,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:46,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:15:46,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:46,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:46,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:46,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:47,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:47,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:47,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:47,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 12:15:47,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:15:47,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 449 [2020-09-25 12:15:47,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:47,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:47,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:47,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:15:47,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 12:15:47,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:47,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:47,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:47,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:47,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:47,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:15:47,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:47,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 12:15:47,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:47,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:47,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:15:47,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:47,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:15:47,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:47,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:15:47,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:47,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:47,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:47,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:15:47,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:47,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 12:15:47,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:47,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:47,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:47,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:47,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:15:47,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:47,402 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 12:15:47,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957267139] [2020-09-25 12:15:47,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:15:47,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:15:47,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973225799] [2020-09-25 12:15:47,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:15:47,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:47,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:15:47,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:15:47,405 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 12:15:47,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:47,528 INFO L93 Difference]: Finished difference Result 110 states and 146 transitions. [2020-09-25 12:15:47,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:15:47,529 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 12:15:47,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:47,531 INFO L225 Difference]: With dead ends: 110 [2020-09-25 12:15:47,531 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 12:15:47,533 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 12:15:47,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 12:15:47,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 12:15:47,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 12:15:47,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-09-25 12:15:47,545 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 35 [2020-09-25 12:15:47,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:47,545 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-09-25 12:15:47,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:15:47,545 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-09-25 12:15:47,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 12:15:47,549 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:47,549 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 12:15:47,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:15:47,549 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:47,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:47,550 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 12:15:47,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:47,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1298531328] [2020-09-25 12:15:47,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:47,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:47,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:47,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:47,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:47,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:47,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:47,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:47,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:52,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:52,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 12:15:52,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:15:52,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 12:15:52,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:52,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:52,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:52,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:52,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 12:15:52,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:52,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:52,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:52,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:52,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:52,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:52,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:52,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:15:52,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:52,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:52,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:52,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:52,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:52,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:52,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:52,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:52,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:52,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:52,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:52,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:52,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:52,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:53,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:56,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:56,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 12:15:56,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:15:56,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3485 [2020-09-25 12:15:56,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:56,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:56,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:56,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:15:56,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 12:15:56,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:15:56,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:56,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:56,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:56,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:56,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:15:56,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:15:56,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 12:15:56,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:56,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:56,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:56,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:56,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:15:56,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:56,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:56,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:56,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:56,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:56,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:56,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:56,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:15:56,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:56,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:56,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:56,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:56,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:56,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:56,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:15:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:56,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:56,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:56,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:56,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:56,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:15:56,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:56,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:56,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:56,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:56,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:56,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:56,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 12:15:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:56,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:56,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:56,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:15:56,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:56,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 12:15:56,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:56,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:56,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:15:56,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:56,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:15:56,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:15:56,324 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 12:15:56,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1298531328] [2020-09-25 12:15:56,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:15:56,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:15:56,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257253963] [2020-09-25 12:15:56,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:15:56,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:56,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:15:56,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:15:56,327 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 7 states. [2020-09-25 12:15:56,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:56,461 INFO L93 Difference]: Finished difference Result 66 states and 81 transitions. [2020-09-25 12:15:56,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:15:56,462 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 12:15:56,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:56,464 INFO L225 Difference]: With dead ends: 66 [2020-09-25 12:15:56,465 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 12:15:56,465 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 12:15:56,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 12:15:56,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-09-25 12:15:56,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 12:15:56,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-09-25 12:15:56,476 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 51 [2020-09-25 12:15:56,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:56,477 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-09-25 12:15:56,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:15:56,477 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-09-25 12:15:56,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 12:15:56,480 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:56,480 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 12:15:56,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:15:56,481 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:56,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:56,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 12:15:56,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:56,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095437902] [2020-09-25 12:15:56,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:56,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:56,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:56,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:56,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:56,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:56,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:56,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:57,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:57,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:57,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:57,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:01,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:01,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 12:16:01,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 12:16:01,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 12:16:01,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:01,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:01,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:16:01,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:16:01,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 12:16:01,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:01,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:16:01,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:01,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:01,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:01,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:16:01,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:01,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:16:01,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:01,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:01,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:01,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:01,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:01,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:01,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:16:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:01,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:01,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:01,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:01,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:01,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:01,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:02,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:03,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:03,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:06,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:06,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 12:16:06,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:16:06,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 12:16:06,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:06,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:06,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:16:06,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 12:16:06,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 12:16:06,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:06,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:06,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:06,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:06,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:06,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:06,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:16:06,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:16:06,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 12:16:06,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:06,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:06,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:16:06,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:06,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 12:16:06,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:06,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:06,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:06,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:06,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:06,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:06,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:06,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:16:06,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:06,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:06,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:16:06,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:06,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:16:06,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:06,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:16:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:06,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:06,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:06,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:06,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:06,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:16:06,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:06,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:06,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:16:06,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:06,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:16:06,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:06,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 12:16:06,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:06,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:06,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:06,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:06,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:16:06,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:16:06,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 12:16:06,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:06,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:06,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:16:06,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:16:06,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:16:06,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:06,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:06,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:06,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:06,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:06,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:06,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:06,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:16:06,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:06,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:06,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:16:06,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:06,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:16:06,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:06,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:16:06,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:06,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:06,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:06,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:06,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:06,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:16:06,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:06,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:06,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:16:06,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:06,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:16:06,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:06,877 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 9 proven. 23 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 12:16:06,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095437902] [2020-09-25 12:16:06,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:16:06,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:16:06,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11713217] [2020-09-25 12:16:06,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:16:06,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:16:06,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:16:06,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:16:06,883 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 10 states. [2020-09-25 12:16:07,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:16:07,240 INFO L93 Difference]: Finished difference Result 136 states and 191 transitions. [2020-09-25 12:16:07,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:16:07,240 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-09-25 12:16:07,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:16:07,243 INFO L225 Difference]: With dead ends: 136 [2020-09-25 12:16:07,243 INFO L226 Difference]: Without dead ends: 88 [2020-09-25 12:16:07,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-09-25 12:16:07,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-25 12:16:07,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 76. [2020-09-25 12:16:07,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-25 12:16:07,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 95 transitions. [2020-09-25 12:16:07,257 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 95 transitions. Word has length 67 [2020-09-25 12:16:07,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:16:07,257 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 95 transitions. [2020-09-25 12:16:07,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:16:07,258 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 95 transitions. [2020-09-25 12:16:07,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-25 12:16:07,261 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:16:07,261 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:16:07,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:16:07,261 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:16:07,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:16:07,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1454118782, now seen corresponding path program 1 times [2020-09-25 12:16:07,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:16:07,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606541617] [2020-09-25 12:16:07,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:16:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:07,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:07,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:07,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:07,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:08,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:08,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:08,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:08,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:08,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:09,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:09,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:11,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:11,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:12,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:12,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 12:16:12,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 12:16:12,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 12:16:12,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:12,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:12,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:16:12,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:16:12,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 12:16:12,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:12,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:16:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:12,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:12,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:12,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:16:12,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:12,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:16:12,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:12,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:12,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:12,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:12,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:12,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:12,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:16:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:12,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:12,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:12,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:12,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:12,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:12,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:12,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:12,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:13,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:14,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:15,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:16,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:16,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:17,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:17,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:16:17,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 12:16:17,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 12:16:17,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:17,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:17,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:16:17,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:16:17,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 12:16:17,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:17,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:17,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:17,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:17,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:17,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:17,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 12:16:17,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:16:17,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-25 12:16:17,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:17,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:17,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:16:17,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:17,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 12:16:17,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:17,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:17,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:17,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:17,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:17,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:16:17,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:17,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:16:17,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:17,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:17,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:16:17,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:17,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:16:17,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:17,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:16:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:17,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:17,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:17,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:17,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:17,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:16:17,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:17,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:17,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:16:17,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:17,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:16:17,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:17,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:16:17,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:17,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:17,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:17,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:17,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:16:17,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:16:17,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 12:16:17,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:17,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:17,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:16:17,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:17,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:16:17,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:17,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:17,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:17,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:17,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:17,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:17,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:17,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:16:17,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:17,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:17,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:17,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:17,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:17,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:17,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:16:17,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:17,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:17,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:17,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:17,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:17,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:16:17,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:17,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:17,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:17,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:17,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:17,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:17,718 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 25 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 12:16:17,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606541617] [2020-09-25 12:16:17,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:16:17,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:16:17,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451031363] [2020-09-25 12:16:17,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:16:17,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:16:17,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:16:17,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:16:17,721 INFO L87 Difference]: Start difference. First operand 76 states and 95 transitions. Second operand 9 states. [2020-09-25 12:16:17,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:16:17,869 INFO L93 Difference]: Finished difference Result 98 states and 124 transitions. [2020-09-25 12:16:17,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 12:16:17,870 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-09-25 12:16:17,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:16:17,872 INFO L225 Difference]: With dead ends: 98 [2020-09-25 12:16:17,875 INFO L226 Difference]: Without dead ends: 92 [2020-09-25 12:16:17,876 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 12:16:17,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-25 12:16:17,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 86. [2020-09-25 12:16:17,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-25 12:16:17,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 111 transitions. [2020-09-25 12:16:17,900 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 111 transitions. Word has length 68 [2020-09-25 12:16:17,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:16:17,903 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 111 transitions. [2020-09-25 12:16:17,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:16:17,903 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 111 transitions. [2020-09-25 12:16:17,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 12:16:17,905 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:16:17,905 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 12:16:17,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 12:16:17,906 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:16:17,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:16:17,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1208671938, now seen corresponding path program 1 times [2020-09-25 12:16:17,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:16:17,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786035200] [2020-09-25 12:16:17,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:16:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:17,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:17,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:17,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:18,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:18,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:18,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:18,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:18,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:20,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:20,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:20,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:20,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:20,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:20,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:21,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:22,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:22,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 12:16:22,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 12:16:22,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:16:22,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:22,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:22,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:16:22,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:16:22,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 12:16:22,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:22,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:16:22,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:22,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:22,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:22,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:16:22,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:22,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:16:22,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:22,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:22,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:22,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:22,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:22,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:22,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:16:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:22,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:22,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:22,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:23,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:23,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:23,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:23,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:23,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:23,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:27,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:27,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:27,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:27,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 12:16:27,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 12:16:27,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:16:27,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:27,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:27,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 12:16:27,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 12:16:27,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 12:16:27,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:27,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:27,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:27,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:27,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:28,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:28,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:28,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 12:16:28,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:16:28,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-09-25 12:16:28,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:28,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:28,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:16:28,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:28,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 12:16:28,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:28,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:28,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:28,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:28,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:16:28,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:28,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:16:28,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:28,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:28,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:16:28,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:28,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:16:28,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:28,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:16:28,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:28,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:28,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:28,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:16:28,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:28,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:16:28,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:28,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:28,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:16:28,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:28,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:16:28,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:28,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 12:16:28,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:28,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:28,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:28,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:28,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:28,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:28,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:28,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:29,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:29,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 12:16:29,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:16:29,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1273 [2020-09-25 12:16:29,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:29,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:29,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:16:29,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:16:29,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 12:16:29,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:29,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:29,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:29,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:29,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:29,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:16:29,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:29,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:16:29,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:29,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:29,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:16:29,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:29,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:16:29,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:29,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:16:29,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:29,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:29,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:29,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:16:29,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:29,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:16:29,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:29,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:29,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:16:29,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:29,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:16:29,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:29,729 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 12:16:29,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786035200] [2020-09-25 12:16:29,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:16:29,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 12:16:29,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468952364] [2020-09-25 12:16:29,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 12:16:29,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:16:29,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 12:16:29,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:16:29,731 INFO L87 Difference]: Start difference. First operand 86 states and 111 transitions. Second operand 11 states. [2020-09-25 12:16:30,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:16:30,193 INFO L93 Difference]: Finished difference Result 212 states and 310 transitions. [2020-09-25 12:16:30,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 12:16:30,195 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-09-25 12:16:30,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:16:30,197 INFO L225 Difference]: With dead ends: 212 [2020-09-25 12:16:30,197 INFO L226 Difference]: Without dead ends: 123 [2020-09-25 12:16:30,198 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 12:16:30,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-25 12:16:30,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 111. [2020-09-25 12:16:30,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-09-25 12:16:30,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 145 transitions. [2020-09-25 12:16:30,216 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 145 transitions. Word has length 71 [2020-09-25 12:16:30,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:16:30,216 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 145 transitions. [2020-09-25 12:16:30,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 12:16:30,216 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 145 transitions. [2020-09-25 12:16:30,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-09-25 12:16:30,218 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:16:30,218 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 12:16:30,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 12:16:30,219 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:16:30,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:16:30,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1801853252, now seen corresponding path program 1 times [2020-09-25 12:16:30,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:16:30,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307183293] [2020-09-25 12:16:30,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:16:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:30,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:30,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:30,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:30,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:30,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:30,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:30,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:30,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:30,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:31,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:31,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:31,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:31,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking...