/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 SequenceOfStatements --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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/reducercommutativity/avg20-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 13:07:27,998 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 13:07:28,001 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 13:07:28,024 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 13:07:28,024 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 13:07:28,025 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 13:07:28,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 13:07:28,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 13:07:28,030 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 13:07:28,031 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 13:07:28,032 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 13:07:28,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 13:07:28,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 13:07:28,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 13:07:28,035 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 13:07:28,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 13:07:28,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 13:07:28,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 13:07:28,039 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 13:07:28,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 13:07:28,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 13:07:28,044 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 13:07:28,045 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 13:07:28,045 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 13:07:28,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 13:07:28,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 13:07:28,048 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 13:07:28,049 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 13:07:28,049 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 13:07:28,050 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 13:07:28,051 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 13:07:28,051 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 13:07:28,052 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 13:07:28,053 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 13:07:28,053 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 13:07:28,054 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 13:07:28,054 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 13:07:28,054 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 13:07:28,055 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 13:07:28,056 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 13:07:28,056 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 13:07:28,057 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 [2020-10-13 13:07:28,087 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 13:07:28,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 13:07:28,089 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 13:07:28,089 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 13:07:28,089 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 13:07:28,090 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 13:07:28,090 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 13:07:28,090 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 13:07:28,090 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 13:07:28,090 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 13:07:28,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 13:07:28,091 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 13:07:28,091 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 13:07:28,091 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 13:07:28,091 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 13:07:28,091 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 13:07:28,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 13:07:28,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 13:07:28,095 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 13:07:28,095 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 13:07:28,095 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 13:07:28,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:07:28,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 13:07:28,096 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 13:07:28,096 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 13:07:28,096 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 13:07:28,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 13:07:28,097 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 13:07:28,097 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 13:07:28,097 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 -> SequenceOfStatements 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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 13:07:28,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 13:07:28,436 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 13:07:28,442 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 13:07:28,444 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 13:07:28,445 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 13:07:28,446 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/avg20-2.i [2020-10-13 13:07:28,521 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/485986a64/a2f5ad6e5c4f4ff1a4ea0f623b2ff367/FLAG538d4a17c [2020-10-13 13:07:28,919 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 13:07:28,920 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/avg20-2.i [2020-10-13 13:07:28,926 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/485986a64/a2f5ad6e5c4f4ff1a4ea0f623b2ff367/FLAG538d4a17c [2020-10-13 13:07:29,300 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/485986a64/a2f5ad6e5c4f4ff1a4ea0f623b2ff367 [2020-10-13 13:07:29,310 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 13:07:29,312 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 13:07:29,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 13:07:29,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 13:07:29,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 13:07:29,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:07:29" (1/1) ... [2020-10-13 13:07:29,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d5d5e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:29, skipping insertion in model container [2020-10-13 13:07:29,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:07:29" (1/1) ... [2020-10-13 13:07:29,331 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 13:07:29,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 13:07:29,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:07:29,537 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 13:07:29,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:07:29,576 INFO L208 MainTranslator]: Completed translation [2020-10-13 13:07:29,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:29 WrapperNode [2020-10-13 13:07:29,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 13:07:29,577 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 13:07:29,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 13:07:29,578 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 13:07:29,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:29" (1/1) ... [2020-10-13 13:07:29,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:29" (1/1) ... [2020-10-13 13:07:29,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:29" (1/1) ... [2020-10-13 13:07:29,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:29" (1/1) ... [2020-10-13 13:07:29,682 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:29" (1/1) ... [2020-10-13 13:07:29,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:29" (1/1) ... [2020-10-13 13:07:29,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:29" (1/1) ... [2020-10-13 13:07:29,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 13:07:29,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 13:07:29,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 13:07:29,691 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 13:07:29,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:29" (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 [2020-10-13 13:07:29,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 13:07:29,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 13:07:29,748 INFO L138 BoogieDeclarations]: Found implementation of procedure avg [2020-10-13 13:07:29,748 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 13:07:29,748 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 13:07:29,748 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 13:07:29,748 INFO L130 BoogieDeclarations]: Found specification of procedure avg [2020-10-13 13:07:29,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 13:07:29,749 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 13:07:29,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 13:07:29,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 13:07:29,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 13:07:29,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 13:07:29,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 13:07:29,999 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 13:07:29,999 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-13 13:07:30,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:07:30 BoogieIcfgContainer [2020-10-13 13:07:30,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 13:07:30,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 13:07:30,005 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 13:07:30,007 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 13:07:30,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:07:29" (1/3) ... [2020-10-13 13:07:30,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7506773a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:07:30, skipping insertion in model container [2020-10-13 13:07:30,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:07:29" (2/3) ... [2020-10-13 13:07:30,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7506773a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:07:30, skipping insertion in model container [2020-10-13 13:07:30,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:07:30" (3/3) ... [2020-10-13 13:07:30,011 INFO L109 eAbstractionObserver]: Analyzing ICFG avg20-2.i [2020-10-13 13:07:30,021 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 13:07:30,029 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 13:07:30,043 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 13:07:30,074 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 13:07:30,074 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 13:07:30,074 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 13:07:30,075 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 13:07:30,075 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 13:07:30,075 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 13:07:30,075 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 13:07:30,076 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 13:07:30,101 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-13 13:07:30,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 13:07:30,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:07:30,110 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:07:30,111 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:07:30,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:07:30,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1283808693, now seen corresponding path program 1 times [2020-10-13 13:07:30,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:07:30,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120110751] [2020-10-13 13:07:30,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:07:30,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:30,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:30,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:30,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:30,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:30,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:31,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:31,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:31,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 13:07:31,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:07:31,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1415 [2020-10-13 13:07:31,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:31,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:31,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 13:07:31,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:31,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 13:07:31,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:07:31,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:31,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:31,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:31,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:07:31,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:31,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:07:31,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:31,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:31,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:31,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:31,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:07:31,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 13:07:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:31,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:31,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:31,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:31,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:07:31,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:31,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 13:07:31,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:31,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:31,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:07:31,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:31,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:31,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 13:07:31,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:31,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:31,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:31,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:31,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:07:31,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:31,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 13:07:31,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:31,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:31,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:07:31,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:31,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:31,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 13:07:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:31,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:31,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:31,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:31,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:07:31,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:31,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 13:07:31,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:31,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:31,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:07:31,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:31,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:31,893 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 13:07:31,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120110751] [2020-10-13 13:07:31,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:07:31,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 13:07:31,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586230212] [2020-10-13 13:07:31,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 13:07:31,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:07:31,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 13:07:31,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 13:07:31,925 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2020-10-13 13:07:32,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:07:32,038 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2020-10-13 13:07:32,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 13:07:32,041 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-13 13:07:32,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:07:32,052 INFO L225 Difference]: With dead ends: 54 [2020-10-13 13:07:32,052 INFO L226 Difference]: Without dead ends: 26 [2020-10-13 13:07:32,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 13:07:32,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-13 13:07:32,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-13 13:07:32,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-13 13:07:32,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-13 13:07:32,117 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 32 [2020-10-13 13:07:32,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:07:32,117 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-13 13:07:32,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 13:07:32,118 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-13 13:07:32,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 13:07:32,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:07:32,136 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:07:32,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 13:07:32,137 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:07:32,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:07:32,138 INFO L82 PathProgramCache]: Analyzing trace with hash 721846027, now seen corresponding path program 1 times [2020-10-13 13:07:32,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:07:32,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004643255] [2020-10-13 13:07:32,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:07:32,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:32,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:32,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:32,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:32,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:32,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:32,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:33,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:33,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 13:07:33,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:07:33,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1612 [2020-10-13 13:07:33,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:33,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:07:33,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 13:07:33,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 13:07:33,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:33,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:07:33,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:33,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:33,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:33,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:07:33,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:33,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:07:33,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:33,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:33,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:33,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:33,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:33,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 13:07:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:33,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:33,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:33,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:33,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:07:33,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:33,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 13:07:33,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:33,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:33,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:33,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:33,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:33,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 13:07:33,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:33,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:33,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:33,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:33,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:07:33,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:33,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 13:07:33,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:33,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:33,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:33,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:33,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:33,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 13:07:33,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:33,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:33,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:33,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:07:33,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:33,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:07:33,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:33,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:07:33,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:07:33,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 13:07:33,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:33,889 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-13 13:07:33,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004643255] [2020-10-13 13:07:33,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:07:33,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:07:33,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956244272] [2020-10-13 13:07:33,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:07:33,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:07:33,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:07:33,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:07:33,897 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 4 states. [2020-10-13 13:07:34,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:07:34,011 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2020-10-13 13:07:34,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:07:34,012 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-13 13:07:34,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:07:34,014 INFO L225 Difference]: With dead ends: 45 [2020-10-13 13:07:34,014 INFO L226 Difference]: Without dead ends: 28 [2020-10-13 13:07:34,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:07:34,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-13 13:07:34,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-13 13:07:34,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-13 13:07:34,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-13 13:07:34,030 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 32 [2020-10-13 13:07:34,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:07:34,031 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-13 13:07:34,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:07:34,031 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-13 13:07:34,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 13:07:34,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:07:34,033 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:07:34,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 13:07:34,034 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:07:34,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:07:34,034 INFO L82 PathProgramCache]: Analyzing trace with hash 540504713, now seen corresponding path program 1 times [2020-10-13 13:07:34,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:07:34,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575038340] [2020-10-13 13:07:34,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:07:34,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:34,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:34,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:34,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:34,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:34,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:37,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:37,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 13:07:37,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:07:37,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3462 [2020-10-13 13:07:37,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:37,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:07:37,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 13:07:37,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 13:07:37,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:37,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:07:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:37,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:37,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:37,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:07:37,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:37,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:07:37,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:37,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:37,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:37,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:37,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:37,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 13:07:37,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:37,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:37,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:37,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:37,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:07:37,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:37,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 13:07:37,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:37,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:37,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:37,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:37,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:37,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 13:07:37,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:37,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:37,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:37,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:37,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:07:37,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:37,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 13:07:37,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:37,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:37,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:37,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:37,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:37,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 13:07:37,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:37,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:37,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:37,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:37,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:07:37,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:37,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 13:07:37,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:37,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:37,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:07:37,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:37,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:37,686 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-13 13:07:37,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575038340] [2020-10-13 13:07:37,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:07:37,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:07:37,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191333050] [2020-10-13 13:07:37,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:07:37,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:07:37,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:07:37,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:07:37,691 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 4 states. [2020-10-13 13:07:37,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:07:37,785 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-10-13 13:07:37,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:07:37,786 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-13 13:07:37,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:07:37,787 INFO L225 Difference]: With dead ends: 42 [2020-10-13 13:07:37,787 INFO L226 Difference]: Without dead ends: 29 [2020-10-13 13:07:37,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:07:37,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-13 13:07:37,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-10-13 13:07:37,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-13 13:07:37,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-13 13:07:37,801 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 38 [2020-10-13 13:07:37,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:07:37,803 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-13 13:07:37,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:07:37,803 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-13 13:07:37,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 13:07:37,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:07:37,808 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:07:37,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 13:07:37,808 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:07:37,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:07:37,809 INFO L82 PathProgramCache]: Analyzing trace with hash -107343225, now seen corresponding path program 1 times [2020-10-13 13:07:37,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:07:37,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380740229] [2020-10-13 13:07:37,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:07:37,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:37,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:37,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:37,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:37,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:38,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:42,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:42,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 13:07:42,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:07:42,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4864 [2020-10-13 13:07:42,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:42,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:07:42,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:07:42,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 13:07:42,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:42,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:07:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:42,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:42,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:42,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:07:42,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:42,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:07:42,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:42,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:42,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:42,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:42,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:42,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 13:07:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:42,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:42,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:42,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:42,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:07:42,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:42,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 13:07:42,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:42,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:42,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:07:42,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:42,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:07:42,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 13:07:42,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:42,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:42,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:42,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:42,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:07:42,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:42,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:07:42,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:42,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:42,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:07:42,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:42,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:42,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 13:07:42,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:42,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:42,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:42,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:42,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:07:42,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:42,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 13:07:42,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:42,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:42,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:07:42,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:42,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 13 [2020-10-13 13:07:42,829 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-13 13:07:42,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380740229] [2020-10-13 13:07:42,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:07:42,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:07:42,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508430140] [2020-10-13 13:07:42,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:07:42,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:07:42,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:07:42,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:07:42,836 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2020-10-13 13:07:42,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:07:42,963 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-10-13 13:07:42,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:07:42,964 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-10-13 13:07:42,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:07:42,966 INFO L225 Difference]: With dead ends: 50 [2020-10-13 13:07:42,966 INFO L226 Difference]: Without dead ends: 30 [2020-10-13 13:07:42,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:07:42,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-13 13:07:42,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-13 13:07:42,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-13 13:07:42,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-13 13:07:42,983 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 40 [2020-10-13 13:07:42,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:07:42,984 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-13 13:07:42,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:07:42,985 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-13 13:07:42,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-13 13:07:42,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:07:42,988 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:07:42,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 13:07:42,988 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:07:42,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:07:42,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1550668567, now seen corresponding path program 1 times [2020-10-13 13:07:42,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:07:42,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917695906] [2020-10-13 13:07:42,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:07:43,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:43,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:43,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:43,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:43,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:43,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:48,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:48,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 13:07:48,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:07:48,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 13:07:48,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:48,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:07:48,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 13:07:48,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 13:07:48,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:48,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:07:48,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:48,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:48,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:48,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:07:48,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:48,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:07:48,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:48,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:48,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:48,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:48,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:48,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 13:07:48,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:48,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:48,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:48,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:07:48,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:48,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:07:48,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:48,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:07:48,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:07:48,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 13:07:48,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:48,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 13:07:48,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:48,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:48,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:48,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:48,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:07:48,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:48,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 13:07:48,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:48,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:48,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:07:48,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:48,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:48,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 13:07:48,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:48,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:48,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:48,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:48,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:07:48,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:48,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 13:07:48,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:48,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:48,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:07:48,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:48,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:48,152 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 13:07:48,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917695906] [2020-10-13 13:07:48,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:07:48,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 13:07:48,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389098133] [2020-10-13 13:07:48,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:07:48,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:07:48,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:07:48,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:07:48,155 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-10-13 13:07:48,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:07:48,269 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2020-10-13 13:07:48,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:07:48,270 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-10-13 13:07:48,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:07:48,271 INFO L225 Difference]: With dead ends: 51 [2020-10-13 13:07:48,271 INFO L226 Difference]: Without dead ends: 32 [2020-10-13 13:07:48,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:07:48,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-13 13:07:48,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-13 13:07:48,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-13 13:07:48,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-13 13:07:48,281 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 42 [2020-10-13 13:07:48,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:07:48,282 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-13 13:07:48,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:07:48,282 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-13 13:07:48,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 13:07:48,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:07:48,284 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:07:48,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 13:07:48,284 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:07:48,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:07:48,285 INFO L82 PathProgramCache]: Analyzing trace with hash 428974311, now seen corresponding path program 2 times [2020-10-13 13:07:48,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:07:48,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227190265] [2020-10-13 13:07:48,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:07:48,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:48,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:48,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:48,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:48,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:49,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:53,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:53,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 13:07:53,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:07:53,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 13:07:53,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:53,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:07:53,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 13:07:53,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 13:07:53,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:53,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:07:53,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:53,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:53,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:53,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:07:53,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:53,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:07:53,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:53,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:53,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:53,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:53,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:53,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 13:07:53,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:53,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:53,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:53,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:53,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:07:53,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:53,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 13:07:53,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:53,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:53,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:53,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:53,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:53,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 13:07:53,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:53,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:53,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:53,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:53,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:07:53,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:53,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 13:07:53,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:53,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:53,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:53,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:53,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:53,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 13:07:53,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:53,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:53,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:53,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:53,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:07:53,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:53,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 13:07:53,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:53,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:53,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:07:53,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:53,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:53,452 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-10-13 13:07:53,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227190265] [2020-10-13 13:07:53,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:07:53,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 13:07:53,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452624680] [2020-10-13 13:07:53,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:07:53,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:07:53,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:07:53,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:07:53,456 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 5 states. [2020-10-13 13:07:53,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:07:53,539 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2020-10-13 13:07:53,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:07:53,540 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2020-10-13 13:07:53,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:07:53,541 INFO L225 Difference]: With dead ends: 49 [2020-10-13 13:07:53,541 INFO L226 Difference]: Without dead ends: 34 [2020-10-13 13:07:53,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:07:53,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-13 13:07:53,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-13 13:07:53,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-13 13:07:53,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-13 13:07:53,550 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 48 [2020-10-13 13:07:53,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:07:53,551 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-13 13:07:53,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:07:53,551 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-13 13:07:53,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 13:07:53,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:07:53,554 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:07:53,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 13:07:53,554 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:07:53,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:07:53,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1284566683, now seen corresponding path program 3 times [2020-10-13 13:07:53,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:07:53,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354221500] [2020-10-13 13:07:53,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:07:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:53,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:53,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:53,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:53,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:54,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:58,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:58,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 13:07:58,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:07:58,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 13:07:58,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:58,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:07:58,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:07:58,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 13:07:58,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:58,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:07:58,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:58,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:58,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:58,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:07:58,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:07:58,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:07:58,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:58,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:58,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:07:58,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:58,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:58,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 13:07:58,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:58,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:58,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:58,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:58,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:07:58,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:58,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 13:07:58,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:58,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:58,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:07:58,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:58,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:58,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 13:07:58,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:58,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:58,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:58,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:58,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:07:58,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:58,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 13:07:58,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:58,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:58,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:07:58,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:58,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:58,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 13:07:58,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:58,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:58,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:58,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:07:58,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:07:58,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:07:58,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 13:07:58,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:07:58,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:07:58,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:07:58,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:07:58,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:07:58,687 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-13 13:07:58,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354221500] [2020-10-13 13:07:58,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:07:58,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 13:07:58,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904491031] [2020-10-13 13:07:58,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:07:58,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:07:58,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:07:58,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:07:58,691 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2020-10-13 13:07:58,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:07:58,784 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2020-10-13 13:07:58,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:07:58,784 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-10-13 13:07:58,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:07:58,785 INFO L225 Difference]: With dead ends: 60 [2020-10-13 13:07:58,785 INFO L226 Difference]: Without dead ends: 36 [2020-10-13 13:07:58,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:07:58,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-13 13:07:58,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-13 13:07:58,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-13 13:07:58,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-13 13:07:58,797 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 50 [2020-10-13 13:07:58,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:07:58,797 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-13 13:07:58,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:07:58,798 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-13 13:07:58,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 13:07:58,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:07:58,799 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:07:58,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 13:07:58,800 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:07:58,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:07:58,801 INFO L82 PathProgramCache]: Analyzing trace with hash -629434041, now seen corresponding path program 4 times [2020-10-13 13:07:58,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:07:58,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182886617] [2020-10-13 13:07:58,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:07:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:07:58,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:58,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:58,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:58,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:07:59,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:03,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:03,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 13:08:03,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:08:03,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 13:08:03,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:03,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:08:03,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 13:08:03,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:08:03,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:03,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:08:03,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:03,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:03,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:03,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:08:03,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:03,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:08:03,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:03,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:03,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:03,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:03,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:03,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 13:08:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:03,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:03,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:03,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:03,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:08:03,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:03,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:08:03,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:03,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:03,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:03,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:03,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:03,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 13:08:03,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:03,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:03,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:03,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:03,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:08:03,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:03,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 13:08:03,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:03,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:03,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:03,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:03,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:03,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 13:08:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:03,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:03,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:03,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:03,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:08:03,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:03,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 13:08:03,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:03,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:03,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:08:03,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:03,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:03,939 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-13 13:08:03,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182886617] [2020-10-13 13:08:03,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:08:03,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 13:08:03,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553147642] [2020-10-13 13:08:03,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:08:03,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:08:03,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:08:03,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:08:03,941 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-10-13 13:08:04,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:08:04,024 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-10-13 13:08:04,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:08:04,025 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-13 13:08:04,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:08:04,026 INFO L225 Difference]: With dead ends: 53 [2020-10-13 13:08:04,026 INFO L226 Difference]: Without dead ends: 38 [2020-10-13 13:08:04,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:08:04,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-13 13:08:04,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-13 13:08:04,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-13 13:08:04,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-13 13:08:04,032 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 52 [2020-10-13 13:08:04,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:08:04,032 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-13 13:08:04,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:08:04,033 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-13 13:08:04,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 13:08:04,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:08:04,034 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:08:04,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 13:08:04,034 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:08:04,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:08:04,034 INFO L82 PathProgramCache]: Analyzing trace with hash -507743803, now seen corresponding path program 5 times [2020-10-13 13:08:04,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:08:04,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431523095] [2020-10-13 13:08:04,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:08:04,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:04,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:04,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:04,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:04,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:05,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:09,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:09,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 13:08:09,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:08:09,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 13:08:09,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:09,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:08:09,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-13 13:08:09,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:08:09,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:09,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:08:09,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:09,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:09,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:09,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:08:09,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:09,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:08:09,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:09,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:09,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:09,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:09,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:09,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 13:08:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:09,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:09,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:09,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:09,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:08:09,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:09,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:08:09,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:09,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:09,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:09,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:09,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:09,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 13:08:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:09,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:09,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:09,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:09,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:08:09,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:09,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 13:08:09,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:09,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:09,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:09,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:09,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:09,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 13:08:09,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:09,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:09,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:09,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:08:09,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:09,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:08:09,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:09,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:08:09,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:08:09,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:08:09,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:09,166 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 13:08:09,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431523095] [2020-10-13 13:08:09,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:08:09,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 13:08:09,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942290939] [2020-10-13 13:08:09,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:08:09,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:08:09,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:08:09,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:08:09,170 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 6 states. [2020-10-13 13:08:09,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:08:09,268 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2020-10-13 13:08:09,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:08:09,269 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-10-13 13:08:09,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:08:09,270 INFO L225 Difference]: With dead ends: 65 [2020-10-13 13:08:09,270 INFO L226 Difference]: Without dead ends: 40 [2020-10-13 13:08:09,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:08:09,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-13 13:08:09,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-13 13:08:09,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-13 13:08:09,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-13 13:08:09,276 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 54 [2020-10-13 13:08:09,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:08:09,276 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-13 13:08:09,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:08:09,276 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-13 13:08:09,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 13:08:09,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:08:09,277 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:08:09,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 13:08:09,278 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:08:09,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:08:09,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1355149629, now seen corresponding path program 6 times [2020-10-13 13:08:09,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:08:09,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855176250] [2020-10-13 13:08:09,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:08:09,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:09,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:09,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:09,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:09,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:14,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:14,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 13:08:14,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:08:14,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 13:08:14,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:14,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:08:14,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:08:14,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:08:14,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:14,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:08:14,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:14,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:14,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:14,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:08:14,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:14,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:08:14,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:14,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:14,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:14,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:14,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:14,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 13:08:14,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:14,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:14,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:14,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:14,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 13:08:14,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:14,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 13:08:14,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:14,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:14,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 13:08:14,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:14,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:14,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 13:08:14,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:14,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:14,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:14,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:14,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 13:08:14,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:14,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 13:08:14,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:14,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:14,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 13:08:14,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:14,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:14,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 13:08:14,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:14,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:14,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:14,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:14,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 13:08:14,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:14,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 13:08:14,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:14,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:14,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 13:08:14,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:14,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:14,402 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-13 13:08:14,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855176250] [2020-10-13 13:08:14,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:08:14,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 13:08:14,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199690740] [2020-10-13 13:08:14,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:08:14,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:08:14,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:08:14,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:08:14,407 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 6 states. [2020-10-13 13:08:14,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:08:14,462 INFO L93 Difference]: Finished difference Result 70 states and 78 transitions. [2020-10-13 13:08:14,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:08:14,462 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-10-13 13:08:14,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:08:14,463 INFO L225 Difference]: With dead ends: 70 [2020-10-13 13:08:14,463 INFO L226 Difference]: Without dead ends: 42 [2020-10-13 13:08:14,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:08:14,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-13 13:08:14,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-13 13:08:14,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-13 13:08:14,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-13 13:08:14,471 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 60 [2020-10-13 13:08:14,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:08:14,471 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-13 13:08:14,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:08:14,471 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-13 13:08:14,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 13:08:14,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:08:14,472 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:08:14,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 13:08:14,472 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:08:14,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:08:14,473 INFO L82 PathProgramCache]: Analyzing trace with hash -2089835483, now seen corresponding path program 7 times [2020-10-13 13:08:14,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:08:14,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594475710] [2020-10-13 13:08:14,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:08:14,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:14,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:14,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:14,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:14,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:19,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:19,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 13:08:19,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:08:19,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 13:08:19,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:19,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:08:19,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 13:08:19,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 13:08:19,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:08:19,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:08:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:19,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:19,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:19,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:08:19,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:19,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:08:19,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:19,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:19,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:19,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:19,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:08:19,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 13:08:19,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:19,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:19,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:19,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 13:08:19,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:19,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 13:08:19,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:19,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:08:19,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:08:19,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 13:08:19,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:08:19,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 13:08:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:19,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:19,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:19,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:19,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 13:08:19,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:19,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 13:08:19,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:19,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:19,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 13:08:19,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:19,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:08:19,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 13:08:19,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:19,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:19,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:19,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:19,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 13:08:19,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:19,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 13:08:19,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:19,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:19,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 13:08:19,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:19,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:08:19,700 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-10-13 13:08:19,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594475710] [2020-10-13 13:08:19,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:08:19,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 13:08:19,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399817087] [2020-10-13 13:08:19,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 13:08:19,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:08:19,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 13:08:19,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:08:19,703 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 7 states. [2020-10-13 13:08:19,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:08:19,857 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2020-10-13 13:08:19,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:08:19,858 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 62 [2020-10-13 13:08:19,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:08:19,859 INFO L225 Difference]: With dead ends: 71 [2020-10-13 13:08:19,859 INFO L226 Difference]: Without dead ends: 44 [2020-10-13 13:08:19,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:08:19,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-13 13:08:19,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-13 13:08:19,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-13 13:08:19,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-13 13:08:19,870 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 62 [2020-10-13 13:08:19,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:08:19,871 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-13 13:08:19,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 13:08:19,871 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-13 13:08:19,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 13:08:19,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:08:19,872 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:08:19,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 13:08:19,874 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:08:19,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:08:19,874 INFO L82 PathProgramCache]: Analyzing trace with hash 150681891, now seen corresponding path program 8 times [2020-10-13 13:08:19,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:08:19,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993948274] [2020-10-13 13:08:19,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:08:19,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:19,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:19,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:19,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:20,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:24,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:24,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 13:08:24,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:08:24,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 13:08:24,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:24,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:08:24,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-13 13:08:24,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 13:08:24,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:24,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:08:24,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:24,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:24,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:24,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:08:24,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:24,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:08:24,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:24,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:24,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:24,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:24,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:24,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 13:08:24,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:24,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:24,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:24,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:24,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:08:24,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:24,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 13:08:24,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:24,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:24,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:24,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:24,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:24,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 13:08:24,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:24,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:24,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:25,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:25,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:08:25,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:25,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 13:08:25,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:25,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:25,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:25,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:25,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:25,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:08:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:25,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:25,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:25,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:25,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:08:25,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:25,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 13:08:25,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:25,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:25,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:08:25,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:25,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:25,051 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2020-10-13 13:08:25,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993948274] [2020-10-13 13:08:25,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:08:25,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 13:08:25,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336911300] [2020-10-13 13:08:25,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 13:08:25,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:08:25,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 13:08:25,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:08:25,053 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 7 states. [2020-10-13 13:08:25,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:08:25,133 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2020-10-13 13:08:25,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:08:25,133 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2020-10-13 13:08:25,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:08:25,134 INFO L225 Difference]: With dead ends: 65 [2020-10-13 13:08:25,134 INFO L226 Difference]: Without dead ends: 46 [2020-10-13 13:08:25,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:08:25,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-13 13:08:25,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-13 13:08:25,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-13 13:08:25,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-13 13:08:25,140 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 68 [2020-10-13 13:08:25,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:08:25,140 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-13 13:08:25,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 13:08:25,140 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-13 13:08:25,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 13:08:25,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:08:25,141 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:08:25,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 13:08:25,141 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:08:25,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:08:25,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1678153055, now seen corresponding path program 9 times [2020-10-13 13:08:25,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:08:25,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772073145] [2020-10-13 13:08:25,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:08:25,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:25,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:25,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:25,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:25,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:30,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:30,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 13:08:30,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:08:30,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-13 13:08:30,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:30,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:08:30,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:08:30,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 13:08:30,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:08:30,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:08:30,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:30,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:30,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:30,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:08:30,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:30,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:08:30,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:30,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:30,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:30,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:30,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:08:30,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 13:08:30,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:30,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:30,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:30,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:30,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:08:30,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:30,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 13:08:30,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:30,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:30,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:08:30,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:30,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:08:30,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 13:08:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:30,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:30,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:30,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:30,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:08:30,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:30,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 13:08:30,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:30,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:30,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:08:30,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:30,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:08:30,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 13:08:30,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:30,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:30,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:30,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:30,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:08:30,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:30,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 13:08:30,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:30,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:30,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:08:30,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:30,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:08:30,454 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2020-10-13 13:08:30,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [772073145] [2020-10-13 13:08:30,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:08:30,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 13:08:30,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4829078] [2020-10-13 13:08:30,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 13:08:30,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:08:30,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 13:08:30,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:08:30,458 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 7 states. [2020-10-13 13:08:30,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:08:30,560 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2020-10-13 13:08:30,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:08:30,561 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-10-13 13:08:30,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:08:30,562 INFO L225 Difference]: With dead ends: 80 [2020-10-13 13:08:30,562 INFO L226 Difference]: Without dead ends: 48 [2020-10-13 13:08:30,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:08:30,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-13 13:08:30,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-13 13:08:30,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-13 13:08:30,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-13 13:08:30,575 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 70 [2020-10-13 13:08:30,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:08:30,575 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-13 13:08:30,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 13:08:30,576 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-13 13:08:30,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 13:08:30,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:08:30,580 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:08:30,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 13:08:30,582 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:08:30,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:08:30,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1920651901, now seen corresponding path program 10 times [2020-10-13 13:08:30,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:08:30,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227304604] [2020-10-13 13:08:30,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:08:30,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:30,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:30,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:30,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:30,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:35,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:35,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 13:08:35,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:08:35,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 13:08:35,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:35,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 13:08:35,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-13 13:08:35,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:08:35,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:35,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:08:35,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:35,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:35,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:35,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:08:35,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:35,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:08:35,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:35,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:35,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:35,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:35,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:35,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 13:08:35,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:35,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:35,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:35,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:35,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:08:35,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:35,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 13:08:35,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:35,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:35,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:35,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:35,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:35,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 13:08:35,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:35,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:35,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:35,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:35,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:08:35,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:35,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 13:08:35,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:35,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:35,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:35,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:35,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:35,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 13:08:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:35,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:35,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:35,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:35,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:08:35,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:35,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 13:08:35,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:35,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:35,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:08:35,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:35,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:35,765 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2020-10-13 13:08:35,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227304604] [2020-10-13 13:08:35,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:08:35,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 13:08:35,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750328580] [2020-10-13 13:08:35,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:08:35,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:08:35,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:08:35,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:08:35,767 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 8 states. [2020-10-13 13:08:35,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:08:35,842 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2020-10-13 13:08:35,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 13:08:35,842 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 72 [2020-10-13 13:08:35,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:08:35,843 INFO L225 Difference]: With dead ends: 69 [2020-10-13 13:08:35,844 INFO L226 Difference]: Without dead ends: 50 [2020-10-13 13:08:35,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:08:35,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-13 13:08:35,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-13 13:08:35,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-13 13:08:35,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-13 13:08:35,851 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 72 [2020-10-13 13:08:35,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:08:35,851 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-13 13:08:35,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:08:35,851 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-13 13:08:35,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-13 13:08:35,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:08:35,852 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:08:35,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 13:08:35,852 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:08:35,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:08:35,853 INFO L82 PathProgramCache]: Analyzing trace with hash 634898177, now seen corresponding path program 11 times [2020-10-13 13:08:35,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:08:35,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715308656] [2020-10-13 13:08:35,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:08:35,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:35,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:35,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:35,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:35,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:40,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:40,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 13:08:40,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:08:40,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 13:08:40,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:40,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 13:08:40,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:08:40,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:08:40,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:40,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:08:40,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:40,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:40,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:40,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:08:40,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:40,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:08:40,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:40,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:40,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:40,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:40,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:40,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 13:08:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:40,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:40,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:40,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:40,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:08:40,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:40,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 13:08:40,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:40,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:40,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:08:40,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:40,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:40,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 13:08:40,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:40,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:40,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:40,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:40,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:08:40,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:40,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 13:08:40,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:40,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:40,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:08:40,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:40,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:40,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 13:08:40,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:40,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:40,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:41,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:41,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:08:41,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:41,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 13:08:41,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:41,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:41,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:08:41,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:41,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:41,017 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2020-10-13 13:08:41,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715308656] [2020-10-13 13:08:41,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:08:41,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 13:08:41,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898615951] [2020-10-13 13:08:41,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:08:41,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:08:41,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:08:41,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:08:41,019 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 8 states. [2020-10-13 13:08:41,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:08:41,109 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2020-10-13 13:08:41,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 13:08:41,109 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 74 [2020-10-13 13:08:41,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:08:41,110 INFO L225 Difference]: With dead ends: 86 [2020-10-13 13:08:41,110 INFO L226 Difference]: Without dead ends: 52 [2020-10-13 13:08:41,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:08:41,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-13 13:08:41,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-13 13:08:41,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-13 13:08:41,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-13 13:08:41,116 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 74 [2020-10-13 13:08:41,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:08:41,116 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-13 13:08:41,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:08:41,116 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-13 13:08:41,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-13 13:08:41,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:08:41,117 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:08:41,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 13:08:41,117 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:08:41,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:08:41,118 INFO L82 PathProgramCache]: Analyzing trace with hash 337856739, now seen corresponding path program 12 times [2020-10-13 13:08:41,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:08:41,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999085527] [2020-10-13 13:08:41,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:08:41,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:41,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:41,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:41,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:41,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:46,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:46,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 13:08:46,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:08:46,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 13:08:46,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:46,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 13:08:46,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 13:08:46,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:08:46,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:46,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:08:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:46,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:46,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:46,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:08:46,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:46,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:08:46,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:46,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:46,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:46,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:46,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:46,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 13:08:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:46,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:46,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:46,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:46,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:08:46,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:46,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 13:08:46,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:46,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:46,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:46,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:46,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:46,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 13:08:46,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:46,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:46,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:46,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:08:46,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:46,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 13:08:46,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:46,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 13:08:46,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:08:46,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:08:46,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:08:46,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 13:08:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:46,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:46,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:46,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:46,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:08:46,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:46,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 13:08:46,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:46,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:46,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:08:46,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:46,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:08:46,346 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 44 proven. 60 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-13 13:08:46,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999085527] [2020-10-13 13:08:46,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:08:46,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 13:08:46,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095174168] [2020-10-13 13:08:46,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:08:46,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:08:46,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:08:46,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:08:46,353 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 8 states. [2020-10-13 13:08:46,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:08:46,558 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2020-10-13 13:08:46,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 13:08:46,558 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 76 [2020-10-13 13:08:46,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:08:46,559 INFO L225 Difference]: With dead ends: 87 [2020-10-13 13:08:46,560 INFO L226 Difference]: Without dead ends: 54 [2020-10-13 13:08:46,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:08:46,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-13 13:08:46,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-13 13:08:46,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-13 13:08:46,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-13 13:08:46,576 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 76 [2020-10-13 13:08:46,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:08:46,579 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-13 13:08:46,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:08:46,579 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-13 13:08:46,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-13 13:08:46,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:08:46,584 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:08:46,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 13:08:46,584 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:08:46,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:08:46,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1187343007, now seen corresponding path program 13 times [2020-10-13 13:08:46,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:08:46,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508219288] [2020-10-13 13:08:46,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:08:46,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:46,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:46,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:46,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:46,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:51,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:51,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 13:08:51,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:08:51,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 13:08:51,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:51,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:08:51,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:08:51,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:08:51,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:51,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:08:51,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:51,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:51,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:51,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:08:51,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:51,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:08:51,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:51,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:51,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:51,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:51,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:08:51,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 13:08:51,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:51,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:51,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:51,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:51,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 13:08:51,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:51,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 13:08:51,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:51,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:51,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 13:08:51,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:51,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:08:51,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 13:08:51,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:51,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:51,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:51,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:51,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 13:08:51,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:51,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 13:08:51,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:51,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:51,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 13:08:51,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:51,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:51,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:08:51,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:51,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:51,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:51,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:51,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 13:08:51,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:51,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 13:08:51,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:51,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:51,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 13:08:51,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:51,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:08:51,864 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-13 13:08:51,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508219288] [2020-10-13 13:08:51,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:08:51,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 13:08:51,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121828914] [2020-10-13 13:08:51,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:08:51,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:08:51,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:08:51,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:08:51,868 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 9 states. [2020-10-13 13:08:51,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:08:51,995 INFO L93 Difference]: Finished difference Result 92 states and 100 transitions. [2020-10-13 13:08:51,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 13:08:51,995 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-10-13 13:08:51,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:08:51,997 INFO L225 Difference]: With dead ends: 92 [2020-10-13 13:08:51,997 INFO L226 Difference]: Without dead ends: 56 [2020-10-13 13:08:51,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:08:51,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-13 13:08:52,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-13 13:08:52,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-13 13:08:52,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-13 13:08:52,014 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 82 [2020-10-13 13:08:52,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:08:52,015 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-13 13:08:52,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:08:52,015 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-13 13:08:52,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-13 13:08:52,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:08:52,019 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 6, 6, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:08:52,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 13:08:52,019 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:08:52,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:08:52,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1931537085, now seen corresponding path program 14 times [2020-10-13 13:08:52,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:08:52,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378301558] [2020-10-13 13:08:52,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:08:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:52,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:52,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:52,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:52,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:57,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:57,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 13:08:57,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:08:57,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 13:08:57,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:57,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:08:57,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-13 13:08:57,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:08:57,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:57,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:08:57,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:57,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:57,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:57,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:08:57,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:57,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:08:57,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:57,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:57,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:57,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:57,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:57,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 13:08:57,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:57,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:57,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:57,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:57,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 13:08:57,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:57,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 13:08:57,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:57,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:57,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:08:57,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:57,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:57,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 13:08:57,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:57,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:57,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:57,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 13:08:57,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:08:57,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 13:08:57,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:57,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:08:57,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:08:57,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:08:57,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:08:57,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 13:08:57,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:57,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:57,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:57,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:08:57,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 13:08:57,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:08:57,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 13:08:57,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:08:57,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:08:57,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 13:08:57,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:08:57,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:08:57,252 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 64 proven. 89 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2020-10-13 13:08:57,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378301558] [2020-10-13 13:08:57,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:08:57,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 13:08:57,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506573010] [2020-10-13 13:08:57,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:08:57,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:08:57,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:08:57,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:08:57,261 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 9 states. [2020-10-13 13:08:57,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:08:57,447 INFO L93 Difference]: Finished difference Result 93 states and 103 transitions. [2020-10-13 13:08:57,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 13:08:57,447 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-10-13 13:08:57,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:08:57,448 INFO L225 Difference]: With dead ends: 93 [2020-10-13 13:08:57,448 INFO L226 Difference]: Without dead ends: 58 [2020-10-13 13:08:57,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-13 13:08:57,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-13 13:08:57,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-13 13:08:57,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-13 13:08:57,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-13 13:08:57,458 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 84 [2020-10-13 13:08:57,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:08:57,459 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-13 13:08:57,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:08:57,459 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-13 13:08:57,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 13:08:57,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:08:57,463 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:08:57,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 13:08:57,463 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:08:57,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:08:57,464 INFO L82 PathProgramCache]: Analyzing trace with hash -51914303, now seen corresponding path program 15 times [2020-10-13 13:08:57,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:08:57,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708065929] [2020-10-13 13:08:57,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:08:57,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:08:57,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:57,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:57,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:08:57,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:02,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:02,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 13:09:02,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:09:02,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 13:09:02,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:02,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:09:02,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-13 13:09:02,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:09:02,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:02,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:02,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:02,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:02,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:02,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:02,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:02,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:09:02,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:02,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:02,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:02,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:02,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:02,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 13:09:02,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:02,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:02,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:02,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:02,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:09:02,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:02,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 13:09:02,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:02,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:02,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:02,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:02,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:02,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 13:09:02,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:02,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:02,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:02,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:02,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:09:02,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:02,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 13:09:02,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:02,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:02,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:02,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:02,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:02,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 13:09:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:02,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:02,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:02,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:02,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:09:02,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:02,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 13:09:02,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:02,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:02,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:09:02,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:02,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:02,669 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2020-10-13 13:09:02,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [708065929] [2020-10-13 13:09:02,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:09:02,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 13:09:02,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910533411] [2020-10-13 13:09:02,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:09:02,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:02,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:09:02,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:09:02,671 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 9 states. [2020-10-13 13:09:02,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:09:02,771 INFO L93 Difference]: Finished difference Result 83 states and 88 transitions. [2020-10-13 13:09:02,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 13:09:02,772 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2020-10-13 13:09:02,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:09:02,773 INFO L225 Difference]: With dead ends: 83 [2020-10-13 13:09:02,773 INFO L226 Difference]: Without dead ends: 60 [2020-10-13 13:09:02,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:09:02,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-13 13:09:02,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-13 13:09:02,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-13 13:09:02,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-13 13:09:02,778 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 90 [2020-10-13 13:09:02,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:09:02,778 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-13 13:09:02,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:09:02,779 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-13 13:09:02,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-13 13:09:02,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:02,780 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:09:02,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 13:09:02,780 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:02,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:02,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1367983169, now seen corresponding path program 16 times [2020-10-13 13:09:02,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:02,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500724303] [2020-10-13 13:09:02,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:02,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:02,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:02,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:02,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:02,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:07,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:07,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 13:09:07,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:09:07,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 13:09:07,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:07,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 13:09:07,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 13:09:07,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:09:07,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:07,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:07,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:07,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:07,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:07,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:07,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:07,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 13:09:07,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:07,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:07,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:07,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:07,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:07,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 13:09:07,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:07,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:07,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:07,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:09:07,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:07,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 13:09:07,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:07,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 13:09:07,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:09:07,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:09:07,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:07,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 13:09:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:07,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:07,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:07,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:07,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:09:07,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:07,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 13:09:07,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:07,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:07,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:09:07,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:07,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:07,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 13:09:07,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:07,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:07,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:07,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:07,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:09:07,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:07,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 13:09:07,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:07,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:07,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:09:07,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:07,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:07,974 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2020-10-13 13:09:07,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500724303] [2020-10-13 13:09:07,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:09:07,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 13:09:07,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403845753] [2020-10-13 13:09:07,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:09:07,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:07,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:09:07,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:09:07,977 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 10 states. [2020-10-13 13:09:08,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:09:08,186 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2020-10-13 13:09:08,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 13:09:08,187 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-10-13 13:09:08,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:09:08,188 INFO L225 Difference]: With dead ends: 101 [2020-10-13 13:09:08,188 INFO L226 Difference]: Without dead ends: 62 [2020-10-13 13:09:08,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-13 13:09:08,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-13 13:09:08,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-13 13:09:08,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-13 13:09:08,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-13 13:09:08,193 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 92 [2020-10-13 13:09:08,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:09:08,193 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-13 13:09:08,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:09:08,194 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-13 13:09:08,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 13:09:08,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:08,195 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 6, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:09:08,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 13:09:08,195 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:08,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:08,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1313231421, now seen corresponding path program 17 times [2020-10-13 13:09:08,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:08,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213922948] [2020-10-13 13:09:08,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:08,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:08,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:08,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:08,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:08,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:13,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:13,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 13:09:13,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:09:13,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 13:09:13,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:13,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 13:09:13,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-13 13:09:13,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:09:13,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:13,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:13,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:13,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:13,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:13,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:13,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:13,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:09:13,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:13,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:13,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:13,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:13,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:13,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 13:09:13,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:13,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:13,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:13,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:13,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 13:09:13,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:13,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 13:09:13,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:13,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:13,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:13,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:13,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:13,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 13:09:13,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:13,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:13,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:13,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:13,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 13:09:13,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:13,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 13:09:13,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:13,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:13,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:13,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:13,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:13,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 13:09:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:13,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:13,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:13,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:13,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 13:09:13,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:13,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 13:09:13,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:13,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:13,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 13:09:13,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:13,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:13,430 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2020-10-13 13:09:13,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213922948] [2020-10-13 13:09:13,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:09:13,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 13:09:13,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473405328] [2020-10-13 13:09:13,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:09:13,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:13,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:09:13,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:09:13,432 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 10 states. [2020-10-13 13:09:13,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:09:13,525 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2020-10-13 13:09:13,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 13:09:13,526 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 98 [2020-10-13 13:09:13,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:09:13,527 INFO L225 Difference]: With dead ends: 89 [2020-10-13 13:09:13,527 INFO L226 Difference]: Without dead ends: 64 [2020-10-13 13:09:13,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:09:13,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-13 13:09:13,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-13 13:09:13,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-13 13:09:13,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-13 13:09:13,532 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 98 [2020-10-13 13:09:13,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:09:13,532 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-13 13:09:13,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:09:13,532 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-13 13:09:13,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 13:09:13,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:13,533 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:09:13,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 13:09:13,533 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:13,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:13,534 INFO L82 PathProgramCache]: Analyzing trace with hash -923175621, now seen corresponding path program 18 times [2020-10-13 13:09:13,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:13,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257365752] [2020-10-13 13:09:13,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:13,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:13,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:13,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:13,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:18,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:18,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 13:09:18,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:09:18,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-13 13:09:18,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:18,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 13:09:18,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:09:18,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:09:18,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:18,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:18,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:18,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:18,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:18,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:18,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:18,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:09:18,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:18,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:18,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:18,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:18,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:18,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 13:09:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:18,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:18,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:18,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:18,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 13:09:18,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:18,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 13:09:18,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:18,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:18,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 13:09:18,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:18,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:18,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 13:09:18,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:18,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:18,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:18,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:18,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 13:09:18,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:18,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 13:09:18,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:18,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:18,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 13:09:18,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:18,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:18,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 13:09:18,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:18,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:18,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:18,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:18,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 13:09:18,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:18,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 13:09:18,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:18,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:18,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 13:09:18,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:18,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:18,826 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2020-10-13 13:09:18,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1257365752] [2020-10-13 13:09:18,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:09:18,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 13:09:18,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004387705] [2020-10-13 13:09:18,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:09:18,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:18,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:09:18,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:09:18,828 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 10 states. [2020-10-13 13:09:18,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:09:18,919 INFO L93 Difference]: Finished difference Result 110 states and 118 transitions. [2020-10-13 13:09:18,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 13:09:18,921 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 100 [2020-10-13 13:09:18,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:09:18,922 INFO L225 Difference]: With dead ends: 110 [2020-10-13 13:09:18,922 INFO L226 Difference]: Without dead ends: 66 [2020-10-13 13:09:18,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:09:18,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-13 13:09:18,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-13 13:09:18,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-13 13:09:18,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-13 13:09:18,927 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 100 [2020-10-13 13:09:18,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:09:18,927 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-13 13:09:18,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:09:18,928 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-13 13:09:18,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 13:09:18,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:18,929 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:09:18,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 13:09:18,929 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:18,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:18,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1836679011, now seen corresponding path program 19 times [2020-10-13 13:09:18,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:18,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7115939] [2020-10-13 13:09:18,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:18,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:18,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:18,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:19,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:23,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:23,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 13:09:23,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:09:23,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 13:09:23,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:23,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:09:23,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-13 13:09:23,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 13:09:23,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:23,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:23,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:23,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:23,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:23,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:23,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:23,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:09:23,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:23,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:23,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:23,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:23,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:23,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 13:09:23,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:23,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:23,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:24,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:24,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 13:09:24,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:24,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 13:09:24,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:24,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:24,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:24,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:24,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:24,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 13:09:24,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:24,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:24,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:24,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 13:09:24,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:24,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 13:09:24,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:24,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:09:24,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:09:24,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 13:09:24,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:24,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 13:09:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:24,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:24,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:24,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:24,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 13:09:24,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:24,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 13:09:24,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:24,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:24,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 13:09:24,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:24,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:24,157 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 116 proven. 165 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2020-10-13 13:09:24,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7115939] [2020-10-13 13:09:24,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:09:24,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 13:09:24,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121454059] [2020-10-13 13:09:24,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 13:09:24,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:24,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 13:09:24,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:09:24,160 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 11 states. [2020-10-13 13:09:24,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:09:24,361 INFO L93 Difference]: Finished difference Result 111 states and 121 transitions. [2020-10-13 13:09:24,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 13:09:24,361 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 102 [2020-10-13 13:09:24,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:09:24,363 INFO L225 Difference]: With dead ends: 111 [2020-10-13 13:09:24,363 INFO L226 Difference]: Without dead ends: 68 [2020-10-13 13:09:24,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:09:24,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-13 13:09:24,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-13 13:09:24,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-13 13:09:24,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-13 13:09:24,369 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 102 [2020-10-13 13:09:24,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:09:24,370 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-13 13:09:24,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 13:09:24,370 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-13 13:09:24,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 13:09:24,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:24,371 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 7, 7, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:09:24,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 13:09:24,371 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:24,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:24,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1001531493, now seen corresponding path program 20 times [2020-10-13 13:09:24,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:24,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346154139] [2020-10-13 13:09:24,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:24,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:24,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:24,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:24,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:24,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:29,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:29,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 13:09:29,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:09:29,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 13:09:29,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:29,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:09:29,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:09:29,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 13:09:29,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:29,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:29,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:29,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:29,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:29,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:29,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:29,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:09:29,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:29,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:29,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:29,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:29,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:29,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 13:09:29,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:29,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:29,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:29,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:29,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:09:29,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:29,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 13:09:29,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:29,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:29,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:09:29,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:29,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:29,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 13:09:29,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:29,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:29,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:29,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:29,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:09:29,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:29,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 13:09:29,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:29,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:29,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:09:29,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:29,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:29,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 13:09:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:29,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:29,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:29,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:29,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:09:29,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:29,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 13:09:29,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:29,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:29,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:09:29,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:29,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:29,627 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2020-10-13 13:09:29,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346154139] [2020-10-13 13:09:29,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:09:29,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 13:09:29,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760117683] [2020-10-13 13:09:29,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 13:09:29,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:29,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 13:09:29,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:09:29,629 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 11 states. [2020-10-13 13:09:29,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:09:29,749 INFO L93 Difference]: Finished difference Result 116 states and 124 transitions. [2020-10-13 13:09:29,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 13:09:29,749 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-10-13 13:09:29,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:09:29,750 INFO L225 Difference]: With dead ends: 116 [2020-10-13 13:09:29,750 INFO L226 Difference]: Without dead ends: 70 [2020-10-13 13:09:29,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:09:29,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-13 13:09:29,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-13 13:09:29,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-13 13:09:29,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-13 13:09:29,756 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 108 [2020-10-13 13:09:29,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:09:29,757 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-13 13:09:29,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 13:09:29,757 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-13 13:09:29,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 13:09:29,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:29,759 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:09:29,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 13:09:29,762 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:29,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:29,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1674731773, now seen corresponding path program 21 times [2020-10-13 13:09:29,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:29,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088240823] [2020-10-13 13:09:29,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:29,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:29,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:29,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:29,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:29,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:34,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:34,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 13:09:34,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:09:34,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 13:09:34,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:34,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:09:34,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 13:09:34,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 13:09:34,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:34,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:34,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:34,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:34,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:34,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:34,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:34,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:09:34,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:34,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:34,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:34,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:34,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:34,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 13:09:34,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:34,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:34,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:34,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:34,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:09:34,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:34,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 13:09:34,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:34,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:34,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:34,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:34,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:34,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 13:09:34,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:34,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:34,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:34,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:34,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:09:34,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:34,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 13:09:34,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:34,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:34,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:34,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:34,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:34,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 13:09:34,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:34,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:34,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:35,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:35,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:09:35,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:35,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 13:09:35,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:35,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:35,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:09:35,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:35,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:35,049 INFO L134 CoverageAnalysis]: Checked inductivity of 752 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2020-10-13 13:09:35,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088240823] [2020-10-13 13:09:35,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:09:35,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 13:09:35,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820440462] [2020-10-13 13:09:35,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 13:09:35,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:35,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 13:09:35,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:09:35,050 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 11 states. [2020-10-13 13:09:35,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:09:35,148 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions. [2020-10-13 13:09:35,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 13:09:35,148 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 110 [2020-10-13 13:09:35,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:09:35,149 INFO L225 Difference]: With dead ends: 99 [2020-10-13 13:09:35,149 INFO L226 Difference]: Without dead ends: 72 [2020-10-13 13:09:35,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:09:35,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-13 13:09:35,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-13 13:09:35,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-13 13:09:35,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-13 13:09:35,154 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 110 [2020-10-13 13:09:35,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:09:35,154 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-13 13:09:35,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 13:09:35,155 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-13 13:09:35,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 13:09:35,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:35,156 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:09:35,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 13:09:35,156 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:35,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:35,156 INFO L82 PathProgramCache]: Analyzing trace with hash 505529339, now seen corresponding path program 22 times [2020-10-13 13:09:35,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:35,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273348449] [2020-10-13 13:09:35,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:35,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:35,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:35,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:35,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:35,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:40,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:40,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 13:09:40,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:09:40,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 13:09:40,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:40,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:09:40,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 13:09:40,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:09:40,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:40,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:40,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:40,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:40,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:40,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:40,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:40,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:09:40,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:40,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:40,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:40,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:40,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:40,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 13:09:40,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:40,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:40,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:40,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:40,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:09:40,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:40,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 13:09:40,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:40,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:40,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:40,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:40,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:40,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 13:09:40,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:40,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:40,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:40,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:40,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:09:40,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:40,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 13:09:40,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:40,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:40,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:40,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:40,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:40,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 13:09:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:40,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:40,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:40,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:40,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:09:40,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:40,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 13:09:40,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:40,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:40,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:09:40,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:40,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:40,430 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2020-10-13 13:09:40,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273348449] [2020-10-13 13:09:40,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:09:40,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 13:09:40,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357255095] [2020-10-13 13:09:40,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 13:09:40,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:40,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 13:09:40,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:09:40,432 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 12 states. [2020-10-13 13:09:40,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:09:40,552 INFO L93 Difference]: Finished difference Result 101 states and 106 transitions. [2020-10-13 13:09:40,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 13:09:40,553 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-10-13 13:09:40,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:09:40,554 INFO L225 Difference]: With dead ends: 101 [2020-10-13 13:09:40,554 INFO L226 Difference]: Without dead ends: 74 [2020-10-13 13:09:40,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:09:40,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-13 13:09:40,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-13 13:09:40,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-13 13:09:40,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-13 13:09:40,559 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 112 [2020-10-13 13:09:40,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:09:40,560 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-13 13:09:40,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 13:09:40,560 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-13 13:09:40,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 13:09:40,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:40,561 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 9, 9, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:09:40,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 13:09:40,562 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:40,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:40,562 INFO L82 PathProgramCache]: Analyzing trace with hash -2111545479, now seen corresponding path program 23 times [2020-10-13 13:09:40,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:40,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869947940] [2020-10-13 13:09:40,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:40,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:40,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:40,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:40,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:40,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:45,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:45,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 13:09:45,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:09:45,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 13:09:45,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:45,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:09:45,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-13 13:09:45,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:09:45,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:45,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:45,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:45,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:45,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:45,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:45,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:45,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:09:45,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:45,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:45,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:45,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:45,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:45,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 13:09:45,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:45,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:45,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:45,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:09:45,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:45,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 13:09:45,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:45,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:09:45,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:09:45,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:09:45,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:45,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 13:09:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:45,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:45,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:45,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:45,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:09:45,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:45,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 13:09:45,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:45,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:45,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:09:45,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:45,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:45,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 13:09:45,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:45,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:45,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:45,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:45,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:09:45,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:45,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 13:09:45,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:45,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:45,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:09:45,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:45,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:45,826 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2020-10-13 13:09:45,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869947940] [2020-10-13 13:09:45,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:09:45,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 13:09:45,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512969664] [2020-10-13 13:09:45,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 13:09:45,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:45,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 13:09:45,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:09:45,827 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 12 states. [2020-10-13 13:09:46,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:09:46,036 INFO L93 Difference]: Finished difference Result 125 states and 135 transitions. [2020-10-13 13:09:46,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 13:09:46,037 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 114 [2020-10-13 13:09:46,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:09:46,038 INFO L225 Difference]: With dead ends: 125 [2020-10-13 13:09:46,038 INFO L226 Difference]: Without dead ends: 76 [2020-10-13 13:09:46,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-13 13:09:46,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-13 13:09:46,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-13 13:09:46,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-13 13:09:46,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-13 13:09:46,043 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 114 [2020-10-13 13:09:46,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:09:46,043 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-13 13:09:46,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 13:09:46,044 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-13 13:09:46,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 13:09:46,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:46,045 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 9, 9, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:09:46,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 13:09:46,045 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:46,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:46,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1295966071, now seen corresponding path program 24 times [2020-10-13 13:09:46,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:46,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [208010964] [2020-10-13 13:09:46,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:46,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:46,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:46,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:46,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:46,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:51,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:51,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 13:09:51,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:09:51,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-13 13:09:51,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:51,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:09:51,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:09:51,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:09:51,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:51,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:51,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:51,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:51,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:51,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:51,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:09:51,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:51,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:51,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:51,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:51,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:51,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 13:09:51,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:51,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:51,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:51,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:51,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 13:09:51,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:51,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 13:09:51,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:51,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:51,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 13:09:51,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:51,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:51,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 13:09:51,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:51,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:51,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:51,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:51,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 13:09:51,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:51,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 13:09:51,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:51,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:51,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 13:09:51,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:51,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:51,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 13:09:51,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:51,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:51,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:51,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:51,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 13:09:51,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:51,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 13:09:51,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:51,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:51,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 13:09:51,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:51,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:51,378 INFO L134 CoverageAnalysis]: Checked inductivity of 943 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 879 trivial. 0 not checked. [2020-10-13 13:09:51,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [208010964] [2020-10-13 13:09:51,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:09:51,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 13:09:51,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138339590] [2020-10-13 13:09:51,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 13:09:51,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:51,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 13:09:51,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:09:51,381 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 12 states. [2020-10-13 13:09:51,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:09:51,498 INFO L93 Difference]: Finished difference Result 130 states and 138 transitions. [2020-10-13 13:09:51,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 13:09:51,498 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 120 [2020-10-13 13:09:51,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:09:51,499 INFO L225 Difference]: With dead ends: 130 [2020-10-13 13:09:51,499 INFO L226 Difference]: Without dead ends: 78 [2020-10-13 13:09:51,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:09:51,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-13 13:09:51,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-13 13:09:51,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-13 13:09:51,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-13 13:09:51,510 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 120 [2020-10-13 13:09:51,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:09:51,511 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-13 13:09:51,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 13:09:51,511 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-13 13:09:51,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 13:09:51,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:51,515 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 9, 9, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:09:51,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 13:09:51,516 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:51,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:51,516 INFO L82 PathProgramCache]: Analyzing trace with hash 862348761, now seen corresponding path program 25 times [2020-10-13 13:09:51,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:51,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134302428] [2020-10-13 13:09:51,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:51,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:51,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:51,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:51,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:51,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:56,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:56,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 13:09:56,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:09:56,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 13:09:56,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:56,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:09:56,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 13:09:56,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 13:09:56,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:56,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:56,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:56,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:56,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:56,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:56,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:56,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:09:56,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:56,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:56,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:56,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:56,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:56,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 13:09:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:56,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:56,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:56,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:56,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 13:09:56,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:56,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 13:09:56,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:56,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:56,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:56,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:56,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:56,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 13:09:56,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:56,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:56,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:56,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:56,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 13:09:56,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:56,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 13:09:56,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:56,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:56,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:56,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:56,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:56,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 13:09:56,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:56,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:56,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:56,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:56,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 13:09:56,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:56,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 13:09:56,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:56,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:56,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 13:09:56,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:56,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:56,858 INFO L134 CoverageAnalysis]: Checked inductivity of 960 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 879 trivial. 0 not checked. [2020-10-13 13:09:56,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134302428] [2020-10-13 13:09:56,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:09:56,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 13:09:56,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838862895] [2020-10-13 13:09:56,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 13:09:56,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:56,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 13:09:56,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:09:56,860 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 13 states. [2020-10-13 13:09:56,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:09:56,947 INFO L93 Difference]: Finished difference Result 109 states and 114 transitions. [2020-10-13 13:09:56,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 13:09:56,948 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 122 [2020-10-13 13:09:56,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:09:56,949 INFO L225 Difference]: With dead ends: 109 [2020-10-13 13:09:56,949 INFO L226 Difference]: Without dead ends: 80 [2020-10-13 13:09:56,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:09:56,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-13 13:09:56,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-13 13:09:56,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-13 13:09:56,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-13 13:09:56,956 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 122 [2020-10-13 13:09:56,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:09:56,957 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-13 13:09:56,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 13:09:56,957 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-13 13:09:56,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 13:09:56,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:56,958 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:09:56,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 13:09:56,958 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:56,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:56,959 INFO L82 PathProgramCache]: Analyzing trace with hash -978259497, now seen corresponding path program 26 times [2020-10-13 13:09:56,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:56,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1878533267] [2020-10-13 13:09:56,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:56,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:56,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:56,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:57,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:57,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:02,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:02,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 13:10:02,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:10:02,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-13 13:10:02,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:02,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:10:02,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-13 13:10:02,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 13:10:02,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:02,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:02,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:02,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:02,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:02,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:02,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:02,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:10:02,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:02,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:02,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:02,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:02,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:02,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 13:10:02,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:02,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:02,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:02,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:02,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 13:10:02,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:02,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 13:10:02,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:02,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:02,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:02,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:02,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:02,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 13:10:02,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:02,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:02,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:02,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 13:10:02,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:02,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 13:10:02,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:02,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:10:02,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:10:02,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 13:10:02,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:02,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 13:10:02,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:02,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:02,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:02,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:02,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 13:10:02,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:02,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 13:10:02,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:02,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:02,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 13:10:02,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:02,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:02,310 INFO L134 CoverageAnalysis]: Checked inductivity of 979 backedges. 184 proven. 265 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2020-10-13 13:10:02,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1878533267] [2020-10-13 13:10:02,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:02,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 13:10:02,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124797853] [2020-10-13 13:10:02,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 13:10:02,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:02,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 13:10:02,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:10:02,312 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 13 states. [2020-10-13 13:10:02,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:02,551 INFO L93 Difference]: Finished difference Result 135 states and 145 transitions. [2020-10-13 13:10:02,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 13:10:02,552 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 124 [2020-10-13 13:10:02,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:02,553 INFO L225 Difference]: With dead ends: 135 [2020-10-13 13:10:02,553 INFO L226 Difference]: Without dead ends: 82 [2020-10-13 13:10:02,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-13 13:10:02,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-13 13:10:02,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-13 13:10:02,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-13 13:10:02,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-13 13:10:02,560 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 124 [2020-10-13 13:10:02,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:02,561 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-13 13:10:02,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 13:10:02,561 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-13 13:10:02,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-13 13:10:02,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:02,562 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:10:02,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 13:10:02,562 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:02,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:02,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1655287211, now seen corresponding path program 27 times [2020-10-13 13:10:02,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:02,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660581620] [2020-10-13 13:10:02,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:02,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:02,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:02,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:02,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:02,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:07,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:07,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-13 13:10:07,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:10:07,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-13 13:10:07,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:07,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:10:07,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:10:07,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 13:10:07,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:07,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:07,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:07,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:07,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:07,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:07,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:07,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:10:07,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:07,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:07,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:07,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:07,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:07,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 13:10:07,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:07,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:07,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:07,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:07,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:10:07,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:07,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 13:10:07,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:07,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:07,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 13:10:07,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:07,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:07,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 13:10:07,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:07,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:07,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:07,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:07,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:10:07,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:07,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 13:10:07,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:07,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:07,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 13:10:07,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:07,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:07,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 13:10:07,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:07,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:07,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:07,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:07,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:10:07,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:07,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 13:10:07,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:07,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:07,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 13:10:07,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:07,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:07,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-13 13:10:07,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660581620] [2020-10-13 13:10:07,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:07,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 13:10:07,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505930731] [2020-10-13 13:10:07,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 13:10:07,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:07,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 13:10:07,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:10:07,921 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 13 states. [2020-10-13 13:10:08,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:08,039 INFO L93 Difference]: Finished difference Result 140 states and 148 transitions. [2020-10-13 13:10:08,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 13:10:08,040 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 130 [2020-10-13 13:10:08,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:08,041 INFO L225 Difference]: With dead ends: 140 [2020-10-13 13:10:08,041 INFO L226 Difference]: Without dead ends: 84 [2020-10-13 13:10:08,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:10:08,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-13 13:10:08,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-13 13:10:08,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-13 13:10:08,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-13 13:10:08,046 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 130 [2020-10-13 13:10:08,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:08,046 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-13 13:10:08,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 13:10:08,047 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-13 13:10:08,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-13 13:10:08,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:08,048 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:10:08,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 13:10:08,048 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:08,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:08,048 INFO L82 PathProgramCache]: Analyzing trace with hash -203766217, now seen corresponding path program 28 times [2020-10-13 13:10:08,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:08,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959339435] [2020-10-13 13:10:08,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:08,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:08,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:08,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:08,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:08,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:13,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:13,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 13:10:13,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:10:13,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-13 13:10:13,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:13,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 13:10:13,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 13:10:13,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 13:10:13,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:13,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:13,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:13,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:13,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:13,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:13,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:10:13,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:13,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:13,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:13,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:13,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:13,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 13:10:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:13,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:13,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:13,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:13,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:10:13,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:13,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 13:10:13,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:13,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:13,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:13,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:13,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:13,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:10:13,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:13,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:13,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:13,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:13,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:10:13,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:13,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 13:10:13,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:13,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:13,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:13,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:13,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:13,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 13:10:13,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:13,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:13,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:13,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:13,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:10:13,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:13,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 13:10:13,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:13,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:13,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 13:10:13,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:13,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:13,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1175 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-13 13:10:13,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959339435] [2020-10-13 13:10:13,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:13,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 13:10:13,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044108429] [2020-10-13 13:10:13,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 13:10:13,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:13,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 13:10:13,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 13:10:13,416 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 14 states. [2020-10-13 13:10:13,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:13,500 INFO L93 Difference]: Finished difference Result 117 states and 122 transitions. [2020-10-13 13:10:13,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:10:13,502 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 132 [2020-10-13 13:10:13,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:13,504 INFO L225 Difference]: With dead ends: 117 [2020-10-13 13:10:13,504 INFO L226 Difference]: Without dead ends: 86 [2020-10-13 13:10:13,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 13:10:13,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-13 13:10:13,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-13 13:10:13,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-13 13:10:13,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-13 13:10:13,509 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 132 [2020-10-13 13:10:13,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:13,510 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-13 13:10:13,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 13:10:13,510 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-13 13:10:13,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-13 13:10:13,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:13,511 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 11, 11, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:10:13,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 13:10:13,511 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:13,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:13,512 INFO L82 PathProgramCache]: Analyzing trace with hash 284926645, now seen corresponding path program 29 times [2020-10-13 13:10:13,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:13,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371721494] [2020-10-13 13:10:13,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:13,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:13,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:13,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:13,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:14,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:18,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:18,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-13 13:10:18,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:10:18,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-13 13:10:18,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:18,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 13:10:18,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-13 13:10:18,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 13:10:18,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:18,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:18,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:18,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:18,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:18,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:18,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:18,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:10:18,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:18,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:18,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:18,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:18,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:18,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 13:10:18,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:18,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:18,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:18,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:18,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:10:18,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:18,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 13:10:18,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:18,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:18,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:18,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:18,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:18,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:10:18,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:18,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:18,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:18,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:10:18,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:18,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 13:10:18,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:18,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 13:10:18,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:10:18,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 13:10:18,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:18,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 13:10:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:18,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:18,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:18,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:18,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:10:18,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:18,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-13 13:10:18,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:18,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:18,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 13:10:18,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:18,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:18,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1196 backedges. 224 proven. 324 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2020-10-13 13:10:18,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371721494] [2020-10-13 13:10:18,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:18,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 13:10:18,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848520010] [2020-10-13 13:10:18,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 13:10:18,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:18,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 13:10:18,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 13:10:18,886 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 14 states. [2020-10-13 13:10:19,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:19,132 INFO L93 Difference]: Finished difference Result 145 states and 155 transitions. [2020-10-13 13:10:19,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:10:19,132 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 134 [2020-10-13 13:10:19,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:19,133 INFO L225 Difference]: With dead ends: 145 [2020-10-13 13:10:19,133 INFO L226 Difference]: Without dead ends: 88 [2020-10-13 13:10:19,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-13 13:10:19,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-13 13:10:19,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-13 13:10:19,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-13 13:10:19,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-13 13:10:19,139 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 134 [2020-10-13 13:10:19,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:19,139 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-13 13:10:19,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 13:10:19,139 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-13 13:10:19,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-13 13:10:19,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:19,141 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:10:19,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 13:10:19,141 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:19,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:19,142 INFO L82 PathProgramCache]: Analyzing trace with hash 649511859, now seen corresponding path program 30 times [2020-10-13 13:10:19,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:19,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272287065] [2020-10-13 13:10:19,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:19,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:19,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:19,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:19,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:24,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:24,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 13:10:24,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:10:24,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-13 13:10:24,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:24,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 13:10:24,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:10:24,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 13:10:24,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:24,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:24,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:24,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:24,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:24,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:24,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:24,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:10:24,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:24,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:24,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:24,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:24,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:24,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 13:10:24,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:24,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:24,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:24,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:24,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 13:10:24,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:24,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 13:10:24,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:24,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:24,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 13:10:24,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:24,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:24,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 13:10:24,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:24,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:24,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:24,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:24,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 13:10:24,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:24,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 13:10:24,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:24,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:24,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 13:10:24,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:24,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:24,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 13:10:24,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:24,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:24,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:24,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:24,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 13:10:24,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:24,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 13:10:24,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:24,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:24,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 13:10:24,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:24,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:24,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1291 trivial. 0 not checked. [2020-10-13 13:10:24,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272287065] [2020-10-13 13:10:24,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:24,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 13:10:24,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735795891] [2020-10-13 13:10:24,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 13:10:24,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:24,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 13:10:24,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 13:10:24,516 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 14 states. [2020-10-13 13:10:24,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:24,619 INFO L93 Difference]: Finished difference Result 150 states and 158 transitions. [2020-10-13 13:10:24,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:10:24,620 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 140 [2020-10-13 13:10:24,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:24,621 INFO L225 Difference]: With dead ends: 150 [2020-10-13 13:10:24,621 INFO L226 Difference]: Without dead ends: 90 [2020-10-13 13:10:24,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 13:10:24,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-13 13:10:24,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-13 13:10:24,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-13 13:10:24,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-13 13:10:24,629 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 140 [2020-10-13 13:10:24,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:24,629 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-13 13:10:24,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 13:10:24,629 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-13 13:10:24,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-13 13:10:24,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:24,630 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:10:24,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 13:10:24,631 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:24,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:24,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1450001685, now seen corresponding path program 31 times [2020-10-13 13:10:24,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:24,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [49134720] [2020-10-13 13:10:24,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:24,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:24,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:24,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:24,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:25,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:29,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:29,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 13:10:29,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:10:29,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-13 13:10:29,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:29,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 13:10:29,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:10:29,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 13:10:29,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:29,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:29,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:29,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:29,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:29,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:29,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:29,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:10:29,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:29,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:29,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:29,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:29,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:29,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 13:10:29,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:29,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:29,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:29,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:29,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 13:10:29,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:29,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 13:10:29,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:29,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:29,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 13:10:29,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:29,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:29,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:10:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:29,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:29,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:29,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:29,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 13:10:29,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:29,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-13 13:10:29,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:29,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:29,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 13:10:29,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:29,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:29,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-13 13:10:29,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:29,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:29,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:30,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:30,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 13:10:30,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:30,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 13:10:30,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:30,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:30,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 13:10:30,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:30,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:30,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1412 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 1291 trivial. 0 not checked. [2020-10-13 13:10:30,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [49134720] [2020-10-13 13:10:30,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:30,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 13:10:30,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816891912] [2020-10-13 13:10:30,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 13:10:30,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:30,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 13:10:30,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 13:10:30,064 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 15 states. [2020-10-13 13:10:30,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:30,189 INFO L93 Difference]: Finished difference Result 152 states and 160 transitions. [2020-10-13 13:10:30,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 13:10:30,189 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 142 [2020-10-13 13:10:30,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:30,191 INFO L225 Difference]: With dead ends: 152 [2020-10-13 13:10:30,191 INFO L226 Difference]: Without dead ends: 92 [2020-10-13 13:10:30,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 13:10:30,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-13 13:10:30,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-13 13:10:30,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-13 13:10:30,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-13 13:10:30,197 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 142 [2020-10-13 13:10:30,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:30,198 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-13 13:10:30,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 13:10:30,198 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-13 13:10:30,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-13 13:10:30,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:30,199 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 12, 12, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:10:30,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 13:10:30,199 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:30,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:30,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1921578487, now seen corresponding path program 32 times [2020-10-13 13:10:30,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:30,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324453531] [2020-10-13 13:10:30,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:30,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:30,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:30,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:30,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:30,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:35,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:35,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-13 13:10:35,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:10:35,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-13 13:10:35,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:35,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 13:10:35,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 13:10:35,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 13:10:35,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:35,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:35,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:35,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:35,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:35,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:35,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:35,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:10:35,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:35,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:35,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:35,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:35,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:35,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 13:10:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:35,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:35,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:35,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:35,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 13:10:35,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:35,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 13:10:35,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:35,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:35,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:35,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:35,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:35,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 13:10:35,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:35,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:35,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:35,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:35,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 13:10:35,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:35,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 13:10:35,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:35,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:35,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:35,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:35,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:35,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-13 13:10:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:35,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:35,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:35,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:35,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 13:10:35,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:35,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 13:10:35,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:35,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:35,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 13:10:35,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:35,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:35,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1435 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 1314 trivial. 0 not checked. [2020-10-13 13:10:35,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324453531] [2020-10-13 13:10:35,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:35,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 13:10:35,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925931596] [2020-10-13 13:10:35,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 13:10:35,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:35,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 13:10:35,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 13:10:35,594 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 15 states. [2020-10-13 13:10:35,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:35,715 INFO L93 Difference]: Finished difference Result 127 states and 132 transitions. [2020-10-13 13:10:35,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 13:10:35,716 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 144 [2020-10-13 13:10:35,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:35,716 INFO L225 Difference]: With dead ends: 127 [2020-10-13 13:10:35,717 INFO L226 Difference]: Without dead ends: 94 [2020-10-13 13:10:35,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 13:10:35,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-13 13:10:35,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-13 13:10:35,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-13 13:10:35,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2020-10-13 13:10:35,722 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 144 [2020-10-13 13:10:35,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:35,723 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2020-10-13 13:10:35,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 13:10:35,723 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2020-10-13 13:10:35,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-13 13:10:35,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:35,724 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 12, 12, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:10:35,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 13:10:35,724 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:35,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:35,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1949445515, now seen corresponding path program 33 times [2020-10-13 13:10:35,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:35,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941688100] [2020-10-13 13:10:35,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:35,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:35,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:35,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:35,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:36,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:40,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:40,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-13 13:10:40,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:10:40,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-13 13:10:40,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:40,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 13:10:40,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-13 13:10:40,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 13:10:40,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:40,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:40,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:40,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:40,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:40,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:40,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:40,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:10:40,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:40,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:40,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:40,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:40,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:40,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 13:10:40,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:40,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:40,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:40,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:40,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 13:10:40,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:40,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 13:10:40,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:40,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:40,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:40,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:40,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:40,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 13:10:40,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:40,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:40,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:40,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 13:10:40,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:40,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 13:10:40,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:40,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 13:10:40,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:10:40,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 13:10:40,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:41,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-13 13:10:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:41,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:41,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:41,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:41,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 13:10:41,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:41,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 13:10:41,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:41,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:41,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 13:10:41,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:41,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:41,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 268 proven. 389 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2020-10-13 13:10:41,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941688100] [2020-10-13 13:10:41,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:41,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 13:10:41,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130865863] [2020-10-13 13:10:41,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 13:10:41,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:41,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 13:10:41,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 13:10:41,134 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 15 states. [2020-10-13 13:10:41,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:41,421 INFO L93 Difference]: Finished difference Result 157 states and 167 transitions. [2020-10-13 13:10:41,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 13:10:41,422 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 146 [2020-10-13 13:10:41,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:41,423 INFO L225 Difference]: With dead ends: 157 [2020-10-13 13:10:41,423 INFO L226 Difference]: Without dead ends: 96 [2020-10-13 13:10:41,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-13 13:10:41,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-13 13:10:41,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-13 13:10:41,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-13 13:10:41,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2020-10-13 13:10:41,429 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 146 [2020-10-13 13:10:41,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:41,429 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2020-10-13 13:10:41,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 13:10:41,430 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2020-10-13 13:10:41,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-13 13:10:41,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:41,431 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 12, 12, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:10:41,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 13:10:41,431 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:41,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:41,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1031029363, now seen corresponding path program 34 times [2020-10-13 13:10:41,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:41,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608978362] [2020-10-13 13:10:41,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:41,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:41,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:41,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:41,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:42,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:46,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:46,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 13:10:46,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:10:46,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-13 13:10:46,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:46,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 13:10:46,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 13:10:46,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 13:10:46,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:46,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:46,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:46,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:46,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:46,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:46,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:46,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:10:46,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:46,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:46,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:46,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:46,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:46,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 13:10:46,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:46,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:46,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:46,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 13:10:46,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:46,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 13:10:46,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:46,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 13:10:46,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:10:46,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 13:10:46,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:46,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 13:10:46,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:46,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:46,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:46,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:46,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 13:10:46,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:46,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-13 13:10:46,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:46,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:46,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 13:10:46,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:46,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:46,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 13:10:46,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:46,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:46,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:46,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:46,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 13:10:46,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:46,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-13 13:10:46,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:46,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:46,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 13:10:46,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:46,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:46,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1671 backedges. 0 proven. 776 refuted. 0 times theorem prover too weak. 895 trivial. 0 not checked. [2020-10-13 13:10:46,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608978362] [2020-10-13 13:10:46,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:46,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 13:10:46,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079799283] [2020-10-13 13:10:46,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 13:10:46,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:46,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 13:10:46,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 13:10:46,940 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 16 states. [2020-10-13 13:10:47,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:47,257 INFO L93 Difference]: Finished difference Result 161 states and 171 transitions. [2020-10-13 13:10:47,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 13:10:47,257 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 152 [2020-10-13 13:10:47,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:47,258 INFO L225 Difference]: With dead ends: 161 [2020-10-13 13:10:47,259 INFO L226 Difference]: Without dead ends: 98 [2020-10-13 13:10:47,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-13 13:10:47,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-13 13:10:47,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-13 13:10:47,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-13 13:10:47,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-10-13 13:10:47,265 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 152 [2020-10-13 13:10:47,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:47,265 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-10-13 13:10:47,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 13:10:47,265 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-10-13 13:10:47,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-13 13:10:47,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:47,266 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 12, 12, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:10:47,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 13:10:47,267 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:47,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:47,267 INFO L82 PathProgramCache]: Analyzing trace with hash -513082383, now seen corresponding path program 35 times [2020-10-13 13:10:47,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:47,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307784114] [2020-10-13 13:10:47,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:47,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:47,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:47,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:48,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:52,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:52,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-13 13:10:52,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:10:52,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-13 13:10:52,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:52,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 13:10:52,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:10:52,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 13:10:52,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:52,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:52,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:52,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:52,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:52,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:52,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:52,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:10:52,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:52,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:52,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:52,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:52,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:52,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 13:10:52,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:52,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:52,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:52,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:52,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 13:10:52,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:52,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 13:10:52,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:52,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:52,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 13:10:52,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:52,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:52,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 13:10:52,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:52,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:52,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:52,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:52,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 13:10:52,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:52,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-13 13:10:52,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:52,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:52,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 13:10:52,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:52,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:52,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-13 13:10:52,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:52,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:52,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:52,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:52,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 13:10:52,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:52,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 13:10:52,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:52,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:52,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 13:10:52,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:52,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:52,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1902 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1758 trivial. 0 not checked. [2020-10-13 13:10:52,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307784114] [2020-10-13 13:10:52,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:52,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 13:10:52,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449436168] [2020-10-13 13:10:52,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 13:10:52,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:52,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 13:10:52,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 13:10:52,729 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 16 states. [2020-10-13 13:10:52,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:52,816 INFO L93 Difference]: Finished difference Result 166 states and 174 transitions. [2020-10-13 13:10:52,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 13:10:52,817 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 158 [2020-10-13 13:10:52,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:52,818 INFO L225 Difference]: With dead ends: 166 [2020-10-13 13:10:52,818 INFO L226 Difference]: Without dead ends: 100 [2020-10-13 13:10:52,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 13:10:52,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-13 13:10:52,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-13 13:10:52,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-13 13:10:52,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2020-10-13 13:10:52,824 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 158 [2020-10-13 13:10:52,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:52,824 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2020-10-13 13:10:52,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 13:10:52,824 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2020-10-13 13:10:52,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-13 13:10:52,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:52,826 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:10:52,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 13:10:52,827 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:52,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:52,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1713154259, now seen corresponding path program 36 times [2020-10-13 13:10:52,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:52,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338900904] [2020-10-13 13:10:52,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:52,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:52,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:52,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:52,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:54,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:57,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:57,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-13 13:10:57,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:10:57,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-13 13:10:57,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:57,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 13:10:57,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-13 13:10:57,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 13:10:57,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:57,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:57,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:57,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:57,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:57,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:57,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:57,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:10:57,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:57,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:57,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:57,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:57,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:57,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 13:10:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:58,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:58,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:58,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:58,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 13:10:58,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:58,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-13 13:10:58,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:58,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:58,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:58,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:58,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:58,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 13:10:58,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:58,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:58,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:58,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:58,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 13:10:58,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:58,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-13 13:10:58,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:58,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:58,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:58,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:58,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:58,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-13 13:10:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:58,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:58,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:58,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:58,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 13:10:58,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:58,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 13:10:58,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:58,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:58,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 13:10:58,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:58,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:58,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1927 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1783 trivial. 0 not checked. [2020-10-13 13:10:58,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338900904] [2020-10-13 13:10:58,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:58,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 13:10:58,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326935799] [2020-10-13 13:10:58,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 13:10:58,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:58,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 13:10:58,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 13:10:58,289 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand 16 states. [2020-10-13 13:10:58,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:58,448 INFO L93 Difference]: Finished difference Result 139 states and 144 transitions. [2020-10-13 13:10:58,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 13:10:58,448 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 160 [2020-10-13 13:10:58,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:58,450 INFO L225 Difference]: With dead ends: 139 [2020-10-13 13:10:58,450 INFO L226 Difference]: Without dead ends: 102 [2020-10-13 13:10:58,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 13:10:58,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-13 13:10:58,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-13 13:10:58,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-13 13:10:58,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2020-10-13 13:10:58,456 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 160 [2020-10-13 13:10:58,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:58,457 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2020-10-13 13:10:58,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 13:10:58,457 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2020-10-13 13:10:58,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-13 13:10:58,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:58,459 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:10:58,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 13:10:58,460 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:58,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:58,460 INFO L82 PathProgramCache]: Analyzing trace with hash 212737617, now seen corresponding path program 37 times [2020-10-13 13:10:58,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:58,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074271784] [2020-10-13 13:10:58,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:58,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:58,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:58,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:59,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:03,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:03,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 13:11:03,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:11:03,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 13:11:03,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:03,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 13:11:03,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 13:11:03,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 13:11:03,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:03,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:11:03,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:03,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:03,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:03,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:11:03,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:11:03,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:11:03,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:03,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:03,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:03,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:03,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:03,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 13:11:03,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:03,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:03,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:03,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 13:11:03,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:11:03,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 13:11:03,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:03,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 13:11:03,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:11:03,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 13:11:03,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:03,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 13:11:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:03,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:03,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:03,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:03,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 13:11:03,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:03,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 13:11:03,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:03,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:03,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 13:11:03,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:03,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:03,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-13 13:11:03,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:03,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:03,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:03,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:03,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 13:11:03,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:03,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 13:11:03,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:03,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:03,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 13:11:03,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:03,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:03,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1952 backedges. 0 proven. 905 refuted. 0 times theorem prover too weak. 1047 trivial. 0 not checked. [2020-10-13 13:11:03,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074271784] [2020-10-13 13:11:03,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:11:03,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 13:11:03,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890220465] [2020-10-13 13:11:03,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 13:11:03,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:11:03,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 13:11:03,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 13:11:03,887 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand 17 states. [2020-10-13 13:11:04,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:11:04,233 INFO L93 Difference]: Finished difference Result 171 states and 181 transitions. [2020-10-13 13:11:04,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 13:11:04,234 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 162 [2020-10-13 13:11:04,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:11:04,235 INFO L225 Difference]: With dead ends: 171 [2020-10-13 13:11:04,235 INFO L226 Difference]: Without dead ends: 104 [2020-10-13 13:11:04,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-13 13:11:04,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-13 13:11:04,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-13 13:11:04,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-13 13:11:04,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2020-10-13 13:11:04,242 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 162 [2020-10-13 13:11:04,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:11:04,242 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2020-10-13 13:11:04,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 13:11:04,242 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2020-10-13 13:11:04,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-13 13:11:04,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:11:04,243 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 13, 13, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:11:04,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 13:11:04,244 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:11:04,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:11:04,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1704634289, now seen corresponding path program 38 times [2020-10-13 13:11:04,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:11:04,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636375770] [2020-10-13 13:11:04,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:11:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:04,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:04,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:04,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:05,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:09,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:09,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 13:11:09,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:11:09,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-13 13:11:09,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:09,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 13:11:09,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:11:09,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 13:11:09,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:09,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:11:09,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:09,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:09,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:09,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:11:09,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:11:09,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:11:09,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:09,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:09,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:09,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:09,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:09,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 13:11:09,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:09,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:09,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:09,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:09,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:11:09,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:09,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 13:11:09,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:09,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:09,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 13:11:09,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:09,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:09,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 13:11:09,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:09,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:09,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:09,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:09,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:11:09,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:09,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 13:11:09,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:09,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:09,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 13:11:09,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:09,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:09,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-13 13:11:09,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:09,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:09,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:09,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:09,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:11:09,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:09,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 13:11:09,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:09,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:09,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 13:11:09,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:09,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:09,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2201 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 2032 trivial. 0 not checked. [2020-10-13 13:11:09,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636375770] [2020-10-13 13:11:09,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:11:09,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 13:11:09,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493736196] [2020-10-13 13:11:09,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 13:11:09,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:11:09,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 13:11:09,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 13:11:09,737 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand 17 states. [2020-10-13 13:11:09,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:11:09,877 INFO L93 Difference]: Finished difference Result 176 states and 184 transitions. [2020-10-13 13:11:09,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 13:11:09,877 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 168 [2020-10-13 13:11:09,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:11:09,878 INFO L225 Difference]: With dead ends: 176 [2020-10-13 13:11:09,879 INFO L226 Difference]: Without dead ends: 106 [2020-10-13 13:11:09,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 13:11:09,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-13 13:11:09,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-13 13:11:09,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-13 13:11:09,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2020-10-13 13:11:09,885 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 168 [2020-10-13 13:11:09,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:11:09,885 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2020-10-13 13:11:09,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 13:11:09,885 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2020-10-13 13:11:09,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-13 13:11:09,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:11:09,886 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 14, 14, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:11:09,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 13:11:09,886 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:11:09,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:11:09,886 INFO L82 PathProgramCache]: Analyzing trace with hash -808070479, now seen corresponding path program 39 times [2020-10-13 13:11:09,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:11:09,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321700939] [2020-10-13 13:11:09,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:11:09,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:09,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:09,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:09,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:11,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:15,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:15,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 13:11:15,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:11:15,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5116 [2020-10-13 13:11:15,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:15,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 13:11:15,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-13 13:11:15,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 13:11:15,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:15,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:11:15,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:15,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:15,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:15,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:11:15,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:11:15,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:11:15,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:15,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:15,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:15,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:15,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:15,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 13:11:15,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:15,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:15,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:15,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:15,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:11:15,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:15,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-13 13:11:15,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:15,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:15,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:15,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:15,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:15,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:11:15,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:15,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:15,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:15,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:15,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:11:15,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:15,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 13:11:15,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:15,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:15,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:15,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:15,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:15,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-13 13:11:15,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:15,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:15,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:15,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:15,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:11:15,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:15,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-13 13:11:15,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:15,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:15,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 13:11:15,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:15,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:15,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2228 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2020-10-13 13:11:15,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321700939] [2020-10-13 13:11:15,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:11:15,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 13:11:15,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638112675] [2020-10-13 13:11:15,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 13:11:15,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:11:15,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 13:11:15,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 13:11:15,510 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand 17 states. [2020-10-13 13:11:15,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:11:15,669 INFO L93 Difference]: Finished difference Result 147 states and 152 transitions. [2020-10-13 13:11:15,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 13:11:15,670 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 170 [2020-10-13 13:11:15,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:11:15,671 INFO L225 Difference]: With dead ends: 147 [2020-10-13 13:11:15,671 INFO L226 Difference]: Without dead ends: 108 [2020-10-13 13:11:15,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 13:11:15,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-13 13:11:15,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-10-13 13:11:15,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-13 13:11:15,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-10-13 13:11:15,682 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 170 [2020-10-13 13:11:15,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:11:15,682 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-10-13 13:11:15,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 13:11:15,682 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-10-13 13:11:15,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 13:11:15,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:11:15,685 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 14, 14, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:11:15,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 13:11:15,685 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:11:15,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:11:15,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1086244689, now seen corresponding path program 40 times [2020-10-13 13:11:15,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:11:15,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383453884] [2020-10-13 13:11:15,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:11:15,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:15,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:15,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:15,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:17,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:20,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:20,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 13:11:20,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:11:20,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 13:11:20,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:20,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 13:11:20,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-13 13:11:20,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 13:11:20,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:20,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:11:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:20,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:20,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:20,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:11:20,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:11:20,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:11:20,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:20,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:20,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:20,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:20,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:20,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 13:11:20,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:20,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:20,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:20,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:20,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:11:20,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:20,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-13 13:11:20,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:20,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:20,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:20,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:20,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:20,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:11:20,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:20,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:20,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:21,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:21,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:11:21,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:21,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 13:11:21,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:21,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:21,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:21,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:21,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:21,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-13 13:11:21,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:21,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:21,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:21,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:21,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:11:21,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:21,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 13:11:21,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:21,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:21,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 13:11:21,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:21,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:21,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2255 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2020-10-13 13:11:21,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383453884] [2020-10-13 13:11:21,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:11:21,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 13:11:21,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085843606] [2020-10-13 13:11:21,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 13:11:21,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:11:21,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 13:11:21,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 13:11:21,196 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 18 states. [2020-10-13 13:11:21,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:11:21,353 INFO L93 Difference]: Finished difference Result 149 states and 154 transitions. [2020-10-13 13:11:21,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 13:11:21,353 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 172 [2020-10-13 13:11:21,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:11:21,354 INFO L225 Difference]: With dead ends: 149 [2020-10-13 13:11:21,354 INFO L226 Difference]: Without dead ends: 110 [2020-10-13 13:11:21,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 13:11:21,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-13 13:11:21,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2020-10-13 13:11:21,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-13 13:11:21,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2020-10-13 13:11:21,360 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 172 [2020-10-13 13:11:21,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:11:21,360 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2020-10-13 13:11:21,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 13:11:21,360 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2020-10-13 13:11:21,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-13 13:11:21,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:11:21,362 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 15, 15, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:11:21,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 13:11:21,363 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:11:21,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:11:21,363 INFO L82 PathProgramCache]: Analyzing trace with hash -2123688147, now seen corresponding path program 41 times [2020-10-13 13:11:21,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:11:21,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515290575] [2020-10-13 13:11:21,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:11:21,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:21,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:21,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:21,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:22,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:26,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:26,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-13 13:11:26,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:11:26,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-13 13:11:26,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:26,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 13:11:26,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-13 13:11:26,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 13:11:26,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:26,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:11:26,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:26,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:26,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:26,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:11:26,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:11:26,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:11:26,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:26,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:26,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:26,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:26,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:26,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 13:11:26,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:26,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:26,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:26,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:11:26,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:11:26,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-13 13:11:26,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:26,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 13:11:26,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:11:26,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 13:11:26,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:26,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:11:26,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:26,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:26,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:26,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:26,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:11:26,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:26,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 13:11:26,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:26,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:26,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 13:11:26,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:26,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:26,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-13 13:11:26,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:26,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:26,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:26,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:26,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:11:26,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:26,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 13:11:26,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:26,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:26,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 13:11:26,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:26,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:26,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2284 backedges. 0 proven. 1044 refuted. 0 times theorem prover too weak. 1240 trivial. 0 not checked. [2020-10-13 13:11:26,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515290575] [2020-10-13 13:11:26,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:11:26,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 13:11:26,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854493795] [2020-10-13 13:11:26,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 13:11:26,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:11:26,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 13:11:26,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 13:11:26,881 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand 18 states. [2020-10-13 13:11:27,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:11:27,248 INFO L93 Difference]: Finished difference Result 185 states and 195 transitions. [2020-10-13 13:11:27,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 13:11:27,249 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 174 [2020-10-13 13:11:27,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:11:27,250 INFO L225 Difference]: With dead ends: 185 [2020-10-13 13:11:27,251 INFO L226 Difference]: Without dead ends: 112 [2020-10-13 13:11:27,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 13:11:27,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-13 13:11:27,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2020-10-13 13:11:27,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-13 13:11:27,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 115 transitions. [2020-10-13 13:11:27,256 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 115 transitions. Word has length 174 [2020-10-13 13:11:27,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:11:27,256 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 115 transitions. [2020-10-13 13:11:27,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 13:11:27,256 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 115 transitions. [2020-10-13 13:11:27,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-13 13:11:27,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:11:27,257 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 15, 15, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:11:27,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 13:11:27,257 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:11:27,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:11:27,258 INFO L82 PathProgramCache]: Analyzing trace with hash 822737451, now seen corresponding path program 42 times [2020-10-13 13:11:27,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:11:27,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973565161] [2020-10-13 13:11:27,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:11:27,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:27,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:27,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:27,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking...