/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=BIGGEST --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/id2_b3_o5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:25:46,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:25:46,915 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:25:46,961 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:25:46,963 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:25:46,990 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:25:46,993 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:25:46,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:25:47,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:25:47,004 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:25:47,007 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:25:47,008 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:25:47,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:25:47,012 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:25:47,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:25:47,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:25:47,019 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:25:47,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:25:47,021 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:25:47,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:25:47,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:25:47,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:25:47,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:25:47,037 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:25:47,040 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:25:47,040 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:25:47,040 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:25:47,044 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:25:47,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:25:47,047 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:25:47,047 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:25:47,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:25:47,049 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:25:47,049 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:25:47,051 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:25:47,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:25:47,052 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:25:47,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:25:47,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:25:47,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:25:47,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:25:47,056 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 [2020-09-24 20:25:47,105 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:25:47,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:25:47,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:25:47,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:25:47,108 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:25:47,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:25:47,108 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:25:47,108 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:25:47,108 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:25:47,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:25:47,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:25:47,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:25:47,110 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:25:47,111 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:25:47,111 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:25:47,111 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:25:47,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:25:47,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:25:47,112 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:25:47,112 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:25:47,112 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:25:47,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:25:47,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:25:47,113 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:25:47,113 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:25:47,113 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:25:47,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:25:47,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:25:47,114 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:25:47,114 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true; [2020-09-24 20:25:47,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:25:47,617 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:25:47,622 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:25:47,624 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:25:47,625 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:25:47,626 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id2_b3_o5.c [2020-09-24 20:25:47,717 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02ec22e29/4e8cce37ad2443b6a1af697e3eb986ed/FLAG4bcdc7eb0 [2020-09-24 20:25:48,243 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:25:48,244 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id2_b3_o5.c [2020-09-24 20:25:48,252 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02ec22e29/4e8cce37ad2443b6a1af697e3eb986ed/FLAG4bcdc7eb0 [2020-09-24 20:25:48,603 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02ec22e29/4e8cce37ad2443b6a1af697e3eb986ed [2020-09-24 20:25:48,618 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:25:48,625 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:25:48,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:25:48,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:25:48,634 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:25:48,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:25:48" (1/1) ... [2020-09-24 20:25:48,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@af3cb46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:48, skipping insertion in model container [2020-09-24 20:25:48,641 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:25:48" (1/1) ... [2020-09-24 20:25:48,651 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:25:48,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:25:48,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:25:48,909 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:25:48,931 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:25:48,951 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:25:48,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:48 WrapperNode [2020-09-24 20:25:48,952 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:25:48,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:25:48,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:25:48,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:25:48,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:48" (1/1) ... [2020-09-24 20:25:48,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:48" (1/1) ... [2020-09-24 20:25:48,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:48" (1/1) ... [2020-09-24 20:25:48,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:48" (1/1) ... [2020-09-24 20:25:49,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:48" (1/1) ... [2020-09-24 20:25:49,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:48" (1/1) ... [2020-09-24 20:25:49,063 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:48" (1/1) ... [2020-09-24 20:25:49,065 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:25:49,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:25:49,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:25:49,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:25:49,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:48" (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 [2020-09-24 20:25:49,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:25:49,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:25:49,137 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-24 20:25:49,137 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2020-09-24 20:25:49,137 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:25:49,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-24 20:25:49,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:25:49,138 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-24 20:25:49,139 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2020-09-24 20:25:49,139 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:25:49,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:25:49,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:25:49,350 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:25:49,351 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 20:25:49,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:25:49 BoogieIcfgContainer [2020-09-24 20:25:49,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:25:49,358 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:25:49,358 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:25:49,362 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:25:49,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:25:48" (1/3) ... [2020-09-24 20:25:49,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c39630f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:25:49, skipping insertion in model container [2020-09-24 20:25:49,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:48" (2/3) ... [2020-09-24 20:25:49,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c39630f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:25:49, skipping insertion in model container [2020-09-24 20:25:49,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:25:49" (3/3) ... [2020-09-24 20:25:49,367 INFO L109 eAbstractionObserver]: Analyzing ICFG id2_b3_o5.c [2020-09-24 20:25:49,388 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:25:49,415 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:25:49,454 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:25:49,504 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:25:49,504 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:25:49,504 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:25:49,505 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:25:49,505 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:25:49,505 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:25:49,505 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:25:49,505 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:25:49,538 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-09-24 20:25:49,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 20:25:49,545 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:25:49,546 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:25:49,546 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:25:49,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:25:49,553 INFO L82 PathProgramCache]: Analyzing trace with hash 875745540, now seen corresponding path program 1 times [2020-09-24 20:25:49,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:25:49,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192810105] [2020-09-24 20:25:49,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:25:49,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:49,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:49,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:49,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 20:25:49,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:49,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-24 20:25:49,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:49,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:25:49,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 20:25:49,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:25:49,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:25:49,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:25:49,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:49,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:49,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:49,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:25:49,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:49,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:25:49,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:49,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:25:49,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:49,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:25:49,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:49,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:25:49,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:49,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:49,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:49,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:25:49,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:49,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 20:25:49,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:49,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:25:49,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:49,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:25:49,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 20:25:49,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:25:49,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192810105] [2020-09-24 20:25:49,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:25:49,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:25:49,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623698215] [2020-09-24 20:25:49,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:25:49,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:25:50,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:25:50,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:25:50,008 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 5 states. [2020-09-24 20:25:50,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:25:50,107 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2020-09-24 20:25:50,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:25:50,109 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 20:25:50,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:25:50,122 INFO L225 Difference]: With dead ends: 51 [2020-09-24 20:25:50,123 INFO L226 Difference]: Without dead ends: 36 [2020-09-24 20:25:50,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:25:50,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-24 20:25:50,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-24 20:25:50,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-24 20:25:50,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-09-24 20:25:50,187 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 16 [2020-09-24 20:25:50,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:25:50,188 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-09-24 20:25:50,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:25:50,189 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-09-24 20:25:50,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-24 20:25:50,191 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:25:50,192 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 20:25:50,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:25:50,192 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:25:50,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:25:50,193 INFO L82 PathProgramCache]: Analyzing trace with hash 71846672, now seen corresponding path program 1 times [2020-09-24 20:25:50,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:25:50,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601847189] [2020-09-24 20:25:50,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:25:50,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:50,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:50,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:50,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:50,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 20:25:50,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:25:50,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 440 [2020-09-24 20:25:50,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:50,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:25:50,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 20:25:50,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 20:25:50,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 20:25:50,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:25:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:50,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:50,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:50,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:25:50,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:50,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:25:50,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:50,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:25:50,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:50,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:25:50,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-24 20:25:50,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:25:50,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:50,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:50,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:50,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 20:25:50,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:50,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-24 20:25:50,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:50,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:25:50,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:50,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 20:25:50,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:50,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:25:50,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:50,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:51,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:51,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:25:51,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:51,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 20:25:51,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:51,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:25:51,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:51,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:25:51,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:51,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:25:51,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601847189] [2020-09-24 20:25:51,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:25:51,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 20:25:51,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723799021] [2020-09-24 20:25:51,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:25:51,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:25:51,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:25:51,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:25:51,070 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 8 states. [2020-09-24 20:25:51,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:25:51,208 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2020-09-24 20:25:51,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 20:25:51,209 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-09-24 20:25:51,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:25:51,210 INFO L225 Difference]: With dead ends: 66 [2020-09-24 20:25:51,211 INFO L226 Difference]: Without dead ends: 44 [2020-09-24 20:25:51,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:25:51,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-24 20:25:51,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-24 20:25:51,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 20:25:51,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-09-24 20:25:51,222 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 25 [2020-09-24 20:25:51,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:25:51,222 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-09-24 20:25:51,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:25:51,223 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-09-24 20:25:51,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 20:25:51,224 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:25:51,224 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 20:25:51,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:25:51,225 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:25:51,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:25:51,225 INFO L82 PathProgramCache]: Analyzing trace with hash -511991682, now seen corresponding path program 1 times [2020-09-24 20:25:51,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:25:51,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898068163] [2020-09-24 20:25:51,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:25:51,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:51,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:51,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:51,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:51,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:52,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:52,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:25:52,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:25:52,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1078 [2020-09-24 20:25:52,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:52,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:25:52,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-24 20:25:52,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 20:25:52,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:52,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:25:52,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:52,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:52,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:52,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:25:52,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:52,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:25:52,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:52,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:25:52,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:52,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:25:52,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:52,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:25:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:52,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:52,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:52,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:52,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:52,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:25:52,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:25:52,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 554 [2020-09-24 20:25:52,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:52,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:25:52,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:52,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:25:52,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:53,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:25:53,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:53,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:53,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:53,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:53,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 20:25:53,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:25:53,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-24 20:25:53,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:53,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:25:53,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 20:25:53,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:25:53,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 20:25:53,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:25:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:53,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:53,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:53,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:25:53,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:53,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 20:25:53,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:53,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:25:53,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:53,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:25:53,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:53,269 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 20:25:53,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898068163] [2020-09-24 20:25:53,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:25:53,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 20:25:53,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323609119] [2020-09-24 20:25:53,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 20:25:53,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:25:53,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 20:25:53,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-24 20:25:53,272 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 10 states. [2020-09-24 20:25:53,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:25:53,352 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2020-09-24 20:25:53,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:25:53,352 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-09-24 20:25:53,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:25:53,354 INFO L225 Difference]: With dead ends: 69 [2020-09-24 20:25:53,354 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 20:25:53,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:25:53,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 20:25:53,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2020-09-24 20:25:53,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-24 20:25:53,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-09-24 20:25:53,363 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 34 [2020-09-24 20:25:53,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:25:53,363 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-09-24 20:25:53,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 20:25:53,364 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-09-24 20:25:53,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 20:25:53,365 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:25:53,365 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 20:25:53,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:25:53,366 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:25:53,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:25:53,366 INFO L82 PathProgramCache]: Analyzing trace with hash -2109914946, now seen corresponding path program 1 times [2020-09-24 20:25:53,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:25:53,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433504864] [2020-09-24 20:25:53,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:25:53,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:53,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:53,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:53,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:53,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:53,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:25:53,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:25:53,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 428 [2020-09-24 20:25:53,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:53,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:25:53,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-24 20:25:53,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 20:25:53,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:53,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:25:53,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:53,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:53,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:53,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:25:53,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:53,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:25:53,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:53,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:25:53,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:53,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:25:53,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:53,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:25:53,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:53,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:54,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:54,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:25:54,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:54,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-24 20:25:54,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:54,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:25:54,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:54,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:25:54,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:54,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:25:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:54,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:54,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:54,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 20:25:54,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:54,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-24 20:25:54,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:54,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:25:54,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:54,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 20:25:54,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:54,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:25:54,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:54,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:54,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:54,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:25:54,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:54,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 20:25:54,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:54,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:25:54,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:54,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:25:54,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:54,254 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 20:25:54,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433504864] [2020-09-24 20:25:54,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:25:54,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 20:25:54,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569677721] [2020-09-24 20:25:54,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 20:25:54,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:25:54,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 20:25:54,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:25:54,257 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 11 states. [2020-09-24 20:25:54,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:25:54,489 INFO L93 Difference]: Finished difference Result 78 states and 86 transitions. [2020-09-24 20:25:54,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 20:25:54,490 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-09-24 20:25:54,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:25:54,492 INFO L225 Difference]: With dead ends: 78 [2020-09-24 20:25:54,492 INFO L226 Difference]: Without dead ends: 56 [2020-09-24 20:25:54,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-09-24 20:25:54,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-24 20:25:54,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 48. [2020-09-24 20:25:54,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-24 20:25:54,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-09-24 20:25:54,502 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 34 [2020-09-24 20:25:54,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:25:54,502 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-09-24 20:25:54,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 20:25:54,503 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-09-24 20:25:54,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 20:25:54,504 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:25:54,505 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 20:25:54,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:25:54,505 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:25:54,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:25:54,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1866785798, now seen corresponding path program 1 times [2020-09-24 20:25:54,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:25:54,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530126121] [2020-09-24 20:25:54,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:25:54,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:54,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:54,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:54,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:55,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:56,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:56,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-24 20:25:56,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:25:56,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1833 [2020-09-24 20:25:56,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:56,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:25:56,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-24 20:25:56,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 20:25:56,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:56,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:25:56,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:56,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:56,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:56,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:25:56,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:56,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:25:56,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:56,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:25:56,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:56,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:25:56,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:56,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:25:56,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:56,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:56,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:56,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:56,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 20:25:56,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:25:56,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 540 [2020-09-24 20:25:56,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:56,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:25:56,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 20:25:56,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 20:25:56,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:56,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:25:56,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:56,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:57,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:57,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:25:57,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:57,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-24 20:25:57,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:57,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:25:57,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 20:25:57,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 20:25:57,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:57,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:25:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:57,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:57,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:57,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 20:25:57,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:57,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-24 20:25:57,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:57,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:25:57,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:57,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 20:25:57,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:57,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:25:57,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:57,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:57,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:57,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:25:57,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:57,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:25:57,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:57,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:25:57,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:57,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:25:57,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:57,311 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 20:25:57,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530126121] [2020-09-24 20:25:57,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:25:57,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 20:25:57,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117990241] [2020-09-24 20:25:57,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:25:57,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:25:57,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:25:57,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:25:57,314 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 8 states. [2020-09-24 20:25:57,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:25:57,452 INFO L93 Difference]: Finished difference Result 81 states and 88 transitions. [2020-09-24 20:25:57,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 20:25:57,453 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-09-24 20:25:57,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:25:57,459 INFO L225 Difference]: With dead ends: 81 [2020-09-24 20:25:57,459 INFO L226 Difference]: Without dead ends: 62 [2020-09-24 20:25:57,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:25:57,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-24 20:25:57,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 59. [2020-09-24 20:25:57,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-24 20:25:57,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-09-24 20:25:57,475 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 43 [2020-09-24 20:25:57,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:25:57,476 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-09-24 20:25:57,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:25:57,477 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-09-24 20:25:57,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 20:25:57,479 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:25:57,479 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 20:25:57,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:25:57,479 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:25:57,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:25:57,480 INFO L82 PathProgramCache]: Analyzing trace with hash 830258234, now seen corresponding path program 1 times [2020-09-24 20:25:57,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:25:57,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384454674] [2020-09-24 20:25:57,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:25:57,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:57,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:57,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:57,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:57,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:57,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-24 20:25:57,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:25:57,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 502 [2020-09-24 20:25:58,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:58,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:25:58,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-24 20:25:58,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 20:25:58,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:58,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:25:58,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:58,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:58,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:58,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:25:58,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:58,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:25:58,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:58,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:25:58,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:58,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:25:58,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:58,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:25:58,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:58,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:58,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:58,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 20:25:58,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:58,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-09-24 20:25:58,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:58,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:25:58,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:58,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 20:25:58,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:58,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:25:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:58,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:58,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:58,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:25:58,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:58,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-24 20:25:58,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:58,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:25:58,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:58,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:25:58,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:58,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:25:58,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:58,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:58,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:58,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 20:25:58,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:58,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 20:25:58,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:58,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:25:58,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:58,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 20:25:58,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:58,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:25:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:58,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:58,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:58,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:25:58,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:58,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 20:25:58,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:58,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:25:58,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:58,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:25:58,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:58,820 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 20:25:58,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384454674] [2020-09-24 20:25:58,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:25:58,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 20:25:58,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816319795] [2020-09-24 20:25:58,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 20:25:58,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:25:58,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 20:25:58,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-09-24 20:25:58,824 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 14 states. [2020-09-24 20:25:59,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:25:59,178 INFO L93 Difference]: Finished difference Result 92 states and 101 transitions. [2020-09-24 20:25:59,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 20:25:59,180 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43 [2020-09-24 20:25:59,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:25:59,182 INFO L225 Difference]: With dead ends: 92 [2020-09-24 20:25:59,183 INFO L226 Difference]: Without dead ends: 70 [2020-09-24 20:25:59,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2020-09-24 20:25:59,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-24 20:25:59,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 54. [2020-09-24 20:25:59,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 20:25:59,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-09-24 20:25:59,202 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 43 [2020-09-24 20:25:59,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:25:59,202 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-09-24 20:25:59,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 20:25:59,203 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-09-24 20:25:59,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 20:25:59,207 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:25:59,207 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 20:25:59,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:25:59,207 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:25:59,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:25:59,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1598367544, now seen corresponding path program 1 times [2020-09-24 20:25:59,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:25:59,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503499423] [2020-09-24 20:25:59,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:25:59,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:59,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:59,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:59,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:00,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:02,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:02,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 20:26:02,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:26:02,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3162 [2020-09-24 20:26:02,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:02,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:26:02,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 20:26:02,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 20:26:02,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:02,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:02,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:02,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:02,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:02,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:02,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:02,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:26:02,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:02,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:02,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:02,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:02,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:02,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:26:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:02,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:02,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:03,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:03,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:26:03,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:26:03,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 931 [2020-09-24 20:26:03,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:03,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:26:03,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 20:26:03,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 20:26:03,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:03,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:03,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:03,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:03,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 20:26:03,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:03,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-09-24 20:26:03,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:03,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:26:03,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 20:26:03,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 20:26:03,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:03,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:03,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:03,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:03,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:03,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:26:03,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:03,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-24 20:26:03,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:03,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:26:03,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:03,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:26:03,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:03,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:03,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:03,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:03,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 20:26:03,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:03,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-24 20:26:03,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:03,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:26:03,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:03,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 20:26:03,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:03,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:03,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:03,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:03,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:03,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:03,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:03,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 20:26:03,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:03,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:03,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:03,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:03,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:04,009 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-24 20:26:04,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503499423] [2020-09-24 20:26:04,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:04,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 20:26:04,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630055970] [2020-09-24 20:26:04,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 20:26:04,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:04,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 20:26:04,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:26:04,013 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 11 states. [2020-09-24 20:26:04,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:04,205 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2020-09-24 20:26:04,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 20:26:04,207 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-09-24 20:26:04,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:04,210 INFO L225 Difference]: With dead ends: 95 [2020-09-24 20:26:04,210 INFO L226 Difference]: Without dead ends: 74 [2020-09-24 20:26:04,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-09-24 20:26:04,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-24 20:26:04,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2020-09-24 20:26:04,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-24 20:26:04,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-09-24 20:26:04,228 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 52 [2020-09-24 20:26:04,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:04,229 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-09-24 20:26:04,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 20:26:04,231 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-09-24 20:26:04,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 20:26:04,232 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:04,232 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:04,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 20:26:04,236 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:04,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:04,237 INFO L82 PathProgramCache]: Analyzing trace with hash 444280, now seen corresponding path program 2 times [2020-09-24 20:26:04,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:04,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238988070] [2020-09-24 20:26:04,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:04,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:04,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:04,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:05,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:05,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:05,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 20:26:05,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:26:05,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1522 [2020-09-24 20:26:05,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:05,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:26:05,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 20:26:05,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:26:05,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:05,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:05,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:05,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:05,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:05,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:05,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:05,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:26:05,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:05,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:05,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:05,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:05,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:05,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:26:05,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:05,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:06,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:06,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:06,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:26:06,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:26:06,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 570 [2020-09-24 20:26:06,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:06,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:26:06,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:06,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 20:26:06,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:06,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:06,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:06,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:06,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:06,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 20:26:06,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:06,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-09-24 20:26:06,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:06,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:26:06,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:06,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 20:26:06,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:06,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:06,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:06,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:06,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:06,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:26:06,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:06,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-24 20:26:06,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:06,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:26:06,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:06,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:26:06,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:06,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:06,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:06,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:06,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 20:26:06,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:06,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-24 20:26:06,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:06,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:26:06,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:06,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 20:26:06,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:07,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:07,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:07,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:07,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:07,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:07,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:07,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 20:26:07,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:07,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:07,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:07,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:07,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:07,095 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-24 20:26:07,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238988070] [2020-09-24 20:26:07,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:07,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 20:26:07,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284657267] [2020-09-24 20:26:07,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 20:26:07,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:07,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 20:26:07,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-09-24 20:26:07,098 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 17 states. [2020-09-24 20:26:07,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:07,423 INFO L93 Difference]: Finished difference Result 103 states and 110 transitions. [2020-09-24 20:26:07,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 20:26:07,424 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 52 [2020-09-24 20:26:07,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:07,425 INFO L225 Difference]: With dead ends: 103 [2020-09-24 20:26:07,425 INFO L226 Difference]: Without dead ends: 82 [2020-09-24 20:26:07,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2020-09-24 20:26:07,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-24 20:26:07,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 77. [2020-09-24 20:26:07,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-24 20:26:07,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-09-24 20:26:07,442 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 52 [2020-09-24 20:26:07,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:07,442 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-09-24 20:26:07,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 20:26:07,443 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-09-24 20:26:07,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-24 20:26:07,444 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:26:07,444 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:26:07,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 20:26:07,445 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:26:07,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:26:07,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1783783324, now seen corresponding path program 2 times [2020-09-24 20:26:07,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:26:07,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849841415] [2020-09-24 20:26:07,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:26:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:07,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:07,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:07,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:08,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:08,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:12,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:12,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 20:26:12,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:26:12,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 20:26:12,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:12,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:26:12,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 20:26:12,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:26:12,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:26:12,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:12,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:12,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:12,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:12,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:12,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:12,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:26:12,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:12,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:12,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:12,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:12,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:12,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 20:26:12,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:12,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:12,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:12,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:15,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:15,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-24 20:26:15,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:26:15,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2838 [2020-09-24 20:26:15,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:15,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:26:15,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 20:26:15,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:26:15,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:15,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:15,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:15,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:15,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:15,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:15,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:26:15,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:26:15,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 527 [2020-09-24 20:26:15,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:15,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:26:15,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:15,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 20:26:15,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:15,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:15,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:16,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:16,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:16,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 20:26:16,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:16,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-24 20:26:16,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:16,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:26:16,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:16,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 20:26:16,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:16,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:16,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:16,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:16,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:16,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:26:16,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:16,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-24 20:26:16,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:16,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:26:16,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:16,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:26:16,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:16,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:16,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:16,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:16,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 20:26:16,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:16,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 20:26:16,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:16,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:26:16,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:16,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 20:26:16,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:16,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 20:26:16,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:16,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:16,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:16,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:16,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:16,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:26:16,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:16,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:26:16,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:16,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:26:16,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:16,582 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-24 20:26:16,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849841415] [2020-09-24 20:26:16,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:26:16,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 20:26:16,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679524274] [2020-09-24 20:26:16,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 20:26:16,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:26:16,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 20:26:16,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-09-24 20:26:16,585 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 17 states. [2020-09-24 20:26:16,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:26:16,867 INFO L93 Difference]: Finished difference Result 93 states and 98 transitions. [2020-09-24 20:26:16,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 20:26:16,867 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 61 [2020-09-24 20:26:16,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:26:16,868 INFO L225 Difference]: With dead ends: 93 [2020-09-24 20:26:16,868 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 20:26:16,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2020-09-24 20:26:16,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 20:26:16,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 20:26:16,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 20:26:16,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 20:26:16,874 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2020-09-24 20:26:16,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:26:16,874 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 20:26:16,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 20:26:16,874 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 20:26:16,875 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 20:26:16,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 20:26:16,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 20:26:16,915 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 20:26:16,915 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 20:26:16,916 INFO L268 CegarLoopResult]: For program point id2FINAL(lines 14 19) no Hoare annotation was computed. [2020-09-24 20:26:16,916 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 20:26:16,916 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 20:26:16,916 INFO L271 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-09-24 20:26:16,916 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-24 20:26:16,916 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 20:26:16,916 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-24 20:26:16,917 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 20:26:16,917 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-24 20:26:16,917 INFO L268 CegarLoopResult]: For program point id2EXIT(lines 14 19) no Hoare annotation was computed. [2020-09-24 20:26:16,917 INFO L271 CegarLoopResult]: At program point id2ENTRY(lines 14 19) the Hoare annotation is: true [2020-09-24 20:26:16,917 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 20:26:16,917 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 20:26:16,918 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 20:26:16,918 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 20:26:16,918 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2020-09-24 20:26:16,919 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 21 27) the Hoare annotation is: true [2020-09-24 20:26:16,919 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 20:26:16,920 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 21 27) no Hoare annotation was computed. [2020-09-24 20:26:16,920 INFO L268 CegarLoopResult]: For program point L24(lines 24 26) no Hoare annotation was computed. [2020-09-24 20:26:16,921 INFO L271 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: true [2020-09-24 20:26:16,921 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 20:26:16,921 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-24 20:26:16,921 INFO L268 CegarLoopResult]: For program point L24-2(lines 21 27) no Hoare annotation was computed. [2020-09-24 20:26:16,921 INFO L268 CegarLoopResult]: For program point L23-2(line 23) no Hoare annotation was computed. [2020-09-24 20:26:16,922 INFO L268 CegarLoopResult]: For program point idFINAL(lines 7 12) no Hoare annotation was computed. [2020-09-24 20:26:16,922 INFO L268 CegarLoopResult]: For program point idEXIT(lines 7 12) no Hoare annotation was computed. [2020-09-24 20:26:16,922 INFO L271 CegarLoopResult]: At program point idENTRY(lines 7 12) the Hoare annotation is: true [2020-09-24 20:26:16,922 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-24 20:26:16,922 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-24 20:26:16,922 INFO L271 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: true [2020-09-24 20:26:16,923 INFO L268 CegarLoopResult]: For program point L10-1(line 10) no Hoare annotation was computed. [2020-09-24 20:26:16,923 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-24 20:26:16,923 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-09-24 20:26:16,924 INFO L268 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-09-24 20:26:16,924 INFO L268 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-09-24 20:26:16,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 08:26:16 BoogieIcfgContainer [2020-09-24 20:26:16,938 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 20:26:16,943 INFO L168 Benchmark]: Toolchain (without parser) took 28320.65 ms. Allocated memory was 138.9 MB in the beginning and 423.6 MB in the end (delta: 284.7 MB). Free memory was 102.0 MB in the beginning and 91.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 295.4 MB. Max. memory is 7.1 GB. [2020-09-24 20:26:16,945 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 20:26:16,946 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.96 ms. Allocated memory is still 138.9 MB. Free memory was 101.4 MB in the beginning and 92.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-09-24 20:26:16,947 INFO L168 Benchmark]: Boogie Preprocessor took 112.60 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 92.0 MB in the beginning and 180.9 MB in the end (delta: -88.9 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-09-24 20:26:16,952 INFO L168 Benchmark]: RCFGBuilder took 291.52 ms. Allocated memory is still 201.9 MB. Free memory was 180.9 MB in the beginning and 167.3 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-24 20:26:16,954 INFO L168 Benchmark]: TraceAbstraction took 27580.39 ms. Allocated memory was 201.9 MB in the beginning and 423.6 MB in the end (delta: 221.8 MB). Free memory was 166.7 MB in the beginning and 91.3 MB in the end (delta: 75.4 MB). Peak memory consumption was 297.2 MB. Max. memory is 7.1 GB. [2020-09-24 20:26:16,966 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 322.96 ms. Allocated memory is still 138.9 MB. Free memory was 101.4 MB in the beginning and 92.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.60 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 92.0 MB in the beginning and 180.9 MB in the end (delta: -88.9 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 291.52 ms. Allocated memory is still 201.9 MB. Free memory was 180.9 MB in the beginning and 167.3 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27580.39 ms. Allocated memory was 201.9 MB in the beginning and 423.6 MB in the end (delta: 221.8 MB). Free memory was 166.7 MB in the beginning and 91.3 MB in the end (delta: 75.4 MB). Peak memory consumption was 297.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 27.3s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 368 SDtfs, 72 SDslu, 3201 SDs, 0 SdLazy, 860 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 230 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 40 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 11 PreInvPairs, 11 NumberOfFragments, 9 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 24.8s InterpolantComputationTime, 360 NumberOfCodeBlocks, 360 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 351 ConstructedInterpolants, 0 QuantifiedInterpolants, 57873 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 74/129 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...