/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=BIGGEST --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/array-crafted/bor2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 09:34:58,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 09:34:58,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 09:34:58,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 09:34:58,414 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 09:34:58,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 09:34:58,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 09:34:58,418 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 09:34:58,420 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 09:34:58,420 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 09:34:58,421 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 09:34:58,422 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 09:34:58,423 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 09:34:58,424 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 09:34:58,425 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 09:34:58,426 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 09:34:58,426 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 09:34:58,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 09:34:58,429 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 09:34:58,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 09:34:58,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 09:34:58,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 09:34:58,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 09:34:58,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 09:34:58,439 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 09:34:58,439 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 09:34:58,439 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 09:34:58,440 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 09:34:58,440 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 09:34:58,441 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 09:34:58,442 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 09:34:58,442 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 09:34:58,443 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 09:34:58,444 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 09:34:58,445 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 09:34:58,445 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 09:34:58,446 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 09:34:58,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 09:34:58,446 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 09:34:58,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 09:34:58,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 09:34:58,448 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 [2020-10-12 09:34:58,470 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 09:34:58,470 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 09:34:58,471 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 09:34:58,472 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 09:34:58,472 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 09:34:58,472 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 09:34:58,472 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 09:34:58,473 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 09:34:58,473 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 09:34:58,473 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 09:34:58,473 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 09:34:58,473 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 09:34:58,473 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 09:34:58,474 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 09:34:58,474 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 09:34:58,474 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 09:34:58,474 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 09:34:58,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 09:34:58,475 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 09:34:58,475 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 09:34:58,475 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 09:34:58,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 09:34:58,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 09:34:58,476 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 09:34:58,476 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 09:34:58,476 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 09:34:58,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 09:34:58,477 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 09:34:58,477 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 09:34:58,477 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 09:34:58,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 09:34:58,812 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 09:34:58,818 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 09:34:58,821 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 09:34:58,823 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 09:34:58,823 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/bor2.i [2020-10-12 09:34:58,880 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a68058aff/1121ab95d1d745dba86b80114bc4f1c7/FLAG5e8226402 [2020-10-12 09:34:59,362 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 09:34:59,363 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/bor2.i [2020-10-12 09:34:59,369 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a68058aff/1121ab95d1d745dba86b80114bc4f1c7/FLAG5e8226402 [2020-10-12 09:34:59,762 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a68058aff/1121ab95d1d745dba86b80114bc4f1c7 [2020-10-12 09:34:59,773 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 09:34:59,777 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 09:34:59,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 09:34:59,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 09:34:59,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 09:34:59,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:34:59" (1/1) ... [2020-10-12 09:34:59,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e4f5049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:34:59, skipping insertion in model container [2020-10-12 09:34:59,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:34:59" (1/1) ... [2020-10-12 09:34:59,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 09:34:59,825 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 09:35:00,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 09:35:00,052 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 09:35:00,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 09:35:00,095 INFO L208 MainTranslator]: Completed translation [2020-10-12 09:35:00,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:00 WrapperNode [2020-10-12 09:35:00,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 09:35:00,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 09:35:00,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 09:35:00,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 09:35:00,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:00" (1/1) ... [2020-10-12 09:35:00,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:00" (1/1) ... [2020-10-12 09:35:00,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:00" (1/1) ... [2020-10-12 09:35:00,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:00" (1/1) ... [2020-10-12 09:35:00,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:00" (1/1) ... [2020-10-12 09:35:00,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:00" (1/1) ... [2020-10-12 09:35:00,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:00" (1/1) ... [2020-10-12 09:35:00,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 09:35:00,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 09:35:00,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 09:35:00,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 09:35:00,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:00" (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 [2020-10-12 09:35:00,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 09:35:00,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 09:35:00,296 INFO L138 BoogieDeclarations]: Found implementation of procedure bor [2020-10-12 09:35:00,296 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 09:35:00,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 09:35:00,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 09:35:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure bor [2020-10-12 09:35:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 09:35:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 09:35:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 09:35:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 09:35:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 09:35:00,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 09:35:00,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 09:35:00,564 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 09:35:00,564 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-12 09:35:00,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:35:00 BoogieIcfgContainer [2020-10-12 09:35:00,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 09:35:00,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 09:35:00,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 09:35:00,574 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 09:35:00,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 09:34:59" (1/3) ... [2020-10-12 09:35:00,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eeb3943 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:35:00, skipping insertion in model container [2020-10-12 09:35:00,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:00" (2/3) ... [2020-10-12 09:35:00,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eeb3943 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:35:00, skipping insertion in model container [2020-10-12 09:35:00,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:35:00" (3/3) ... [2020-10-12 09:35:00,578 INFO L109 eAbstractionObserver]: Analyzing ICFG bor2.i [2020-10-12 09:35:00,590 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 09:35:00,598 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 09:35:00,632 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 09:35:00,698 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 09:35:00,699 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 09:35:00,699 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 09:35:00,699 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 09:35:00,699 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 09:35:00,699 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 09:35:00,700 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 09:35:00,700 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 09:35:00,723 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-12 09:35:00,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 09:35:00,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:00,731 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] [2020-10-12 09:35:00,732 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:00,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:00,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1283808693, now seen corresponding path program 1 times [2020-10-12 09:35:00,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:00,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082247333] [2020-10-12 09:35:00,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:00,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:00,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:00,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:00,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:01,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:01,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:01,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:01,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 09:35:01,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:01,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 899 [2020-10-12 09:35:01,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:01,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:35:01,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-12 09:35:01,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 09:35:01,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 09:35:01,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:01,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:01,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:01,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:01,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:01,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:01,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 09:35:01,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:01,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:01,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:01,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:01,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 09:35:01,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:01,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:01,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:01,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:01,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 09:35:01,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:01,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 09:35:01,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:01,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:35:01,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:01,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 09:35:01,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:01,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 09:35:01,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:01,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:01,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:01,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 09:35:01,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:01,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 09:35:01,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:01,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:35:01,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:01,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 09:35:01,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:01,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 09:35:01,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:01,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:01,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:01,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:01,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 09:35:01,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:01,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 09:35:01,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:01,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:35:01,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:01,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 09:35:01,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:01,947 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 09:35:01,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082247333] [2020-10-12 09:35:01,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 09:35:01,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 09:35:01,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383505013] [2020-10-12 09:35:01,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 09:35:01,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:01,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 09:35:01,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 09:35:01,995 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 4 states. [2020-10-12 09:35:02,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:02,144 INFO L93 Difference]: Finished difference Result 56 states and 75 transitions. [2020-10-12 09:35:02,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 09:35:02,146 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-12 09:35:02,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:02,155 INFO L225 Difference]: With dead ends: 56 [2020-10-12 09:35:02,156 INFO L226 Difference]: Without dead ends: 28 [2020-10-12 09:35:02,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 09:35:02,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-12 09:35:02,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-12 09:35:02,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-12 09:35:02,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-12 09:35:02,206 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 32 [2020-10-12 09:35:02,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:02,206 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-12 09:35:02,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 09:35:02,207 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-12 09:35:02,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-12 09:35:02,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:02,213 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] [2020-10-12 09:35:02,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 09:35:02,215 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:02,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:02,216 INFO L82 PathProgramCache]: Analyzing trace with hash 540504713, now seen corresponding path program 1 times [2020-10-12 09:35:02,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:02,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1427931792] [2020-10-12 09:35:02,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:02,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:02,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:02,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:02,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:02,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:02,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:04,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:04,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 09:35:04,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:04,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2068 [2020-10-12 09:35:04,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:04,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 09:35:04,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-12 09:35:04,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 09:35:04,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:04,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:04,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:04,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:04,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:04,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:04,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:35:04,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:04,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:04,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:04,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:04,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:04,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:04,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:04,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:04,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:04,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:04,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 09:35:04,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:04,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 09:35:04,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:04,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 09:35:04,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:04,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 09:35:04,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:04,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-12 09:35:04,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:04,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:04,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:04,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:04,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 09:35:04,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:04,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 09:35:04,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:04,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 09:35:04,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:04,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 09:35:04,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:04,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 09:35:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:04,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:04,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:04,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 09:35:04,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:04,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 09:35:04,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:04,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 09:35:04,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:04,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 09:35:04,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:04,461 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-12 09:35:04,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1427931792] [2020-10-12 09:35:04,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:04,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 09:35:04,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384760485] [2020-10-12 09:35:04,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 09:35:04,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:04,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 09:35:04,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 09:35:04,481 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 5 states. [2020-10-12 09:35:04,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:04,610 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2020-10-12 09:35:04,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 09:35:04,611 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-10-12 09:35:04,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:04,612 INFO L225 Difference]: With dead ends: 48 [2020-10-12 09:35:04,613 INFO L226 Difference]: Without dead ends: 30 [2020-10-12 09:35:04,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-12 09:35:04,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-12 09:35:04,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-12 09:35:04,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-12 09:35:04,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-12 09:35:04,623 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 38 [2020-10-12 09:35:04,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:04,623 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-12 09:35:04,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 09:35:04,623 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-12 09:35:04,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-12 09:35:04,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:04,625 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] [2020-10-12 09:35:04,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 09:35:04,626 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:04,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:04,626 INFO L82 PathProgramCache]: Analyzing trace with hash -919236729, now seen corresponding path program 2 times [2020-10-12 09:35:04,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:04,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299997299] [2020-10-12 09:35:04,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:04,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:04,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:04,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:04,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:04,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:05,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:09,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:09,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 09:35:09,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:09,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4573 [2020-10-12 09:35:09,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:09,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:35:09,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-12 09:35:09,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:35:09,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:09,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:09,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:09,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:09,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:09,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:09,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:09,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:35:09,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:09,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:09,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:09,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:09,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:09,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:09,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:09,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:09,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:09,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:09,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 09:35:09,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:09,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 09:35:09,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:09,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:35:09,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:09,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:35:09,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:09,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 09:35:09,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:09,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:09,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:09,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:09,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 09:35:09,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:09,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 09:35:09,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:09,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:35:09,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:09,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:35:09,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:09,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 09:35:09,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:09,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:09,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:09,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 09:35:09,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:09,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 09:35:09,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:09,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:35:09,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:09,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:35:09,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:09,343 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-12 09:35:09,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299997299] [2020-10-12 09:35:09,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:09,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 09:35:09,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576690517] [2020-10-12 09:35:09,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 09:35:09,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:09,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 09:35:09,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 09:35:09,346 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 6 states. [2020-10-12 09:35:09,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:09,481 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-10-12 09:35:09,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 09:35:09,482 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-10-12 09:35:09,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:09,483 INFO L225 Difference]: With dead ends: 52 [2020-10-12 09:35:09,484 INFO L226 Difference]: Without dead ends: 32 [2020-10-12 09:35:09,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 09:35:09,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-12 09:35:09,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-12 09:35:09,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-12 09:35:09,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-12 09:35:09,492 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 44 [2020-10-12 09:35:09,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:09,493 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-12 09:35:09,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 09:35:09,493 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-12 09:35:09,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-12 09:35:09,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:09,494 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 09:35:09,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 09:35:09,495 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:09,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:09,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1824311803, now seen corresponding path program 3 times [2020-10-12 09:35:09,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:09,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475990603] [2020-10-12 09:35:09,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:09,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:09,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:09,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:09,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:09,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:09,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:14,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:14,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 09:35:14,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:14,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 09:35:14,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:14,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 09:35:14,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-12 09:35:14,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 09:35:14,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:14,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:14,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:14,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:14,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:14,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:14,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:35:14,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:14,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:14,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:14,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:14,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:14,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:14,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:14,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:14,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:14,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:14,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 09:35:14,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:14,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 09:35:14,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:14,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 09:35:14,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:14,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 09:35:14,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:14,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 09:35:14,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:14,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:14,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:14,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:14,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 09:35:14,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:14,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 09:35:14,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:14,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 09:35:14,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:14,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 09:35:14,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:14,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 09:35:14,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:14,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:14,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:14,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 09:35:14,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:14,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 09:35:14,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:14,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 09:35:14,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:14,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 09:35:14,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:14,664 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 27 proven. 54 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-12 09:35:14,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475990603] [2020-10-12 09:35:14,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:14,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 09:35:14,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206125650] [2020-10-12 09:35:14,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 09:35:14,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:14,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 09:35:14,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 09:35:14,669 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 7 states. [2020-10-12 09:35:14,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:14,844 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-12 09:35:14,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 09:35:14,844 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-10-12 09:35:14,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:14,845 INFO L225 Difference]: With dead ends: 56 [2020-10-12 09:35:14,846 INFO L226 Difference]: Without dead ends: 34 [2020-10-12 09:35:14,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-12 09:35:14,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-12 09:35:14,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-12 09:35:14,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-12 09:35:14,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-12 09:35:14,856 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 50 [2020-10-12 09:35:14,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:14,857 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-12 09:35:14,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 09:35:14,857 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-12 09:35:14,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 09:35:14,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:14,858 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 09:35:14,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 09:35:14,859 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:14,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:14,859 INFO L82 PathProgramCache]: Analyzing trace with hash 79349251, now seen corresponding path program 4 times [2020-10-12 09:35:14,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:14,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607071775] [2020-10-12 09:35:14,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:14,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:14,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:14,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:14,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:15,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:19,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:19,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 09:35:19,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:19,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 09:35:19,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:19,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 09:35:19,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-12 09:35:19,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 09:35:19,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 09:35:19,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:19,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:19,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:19,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:19,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:19,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:35:19,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:19,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:19,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:19,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:19,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:19,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:19,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:19,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:19,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:19,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 09:35:19,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:19,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 09:35:19,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:19,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 09:35:19,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:19,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 09:35:19,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:19,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 09:35:19,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:19,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:19,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:20,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:20,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 09:35:20,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:20,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 09:35:20,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:20,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 09:35:20,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:20,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 09:35:20,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:20,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 09:35:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:20,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:20,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:20,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 09:35:20,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:20,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 09:35:20,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:20,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 09:35:20,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:20,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 09:35:20,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:20,053 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 48 proven. 96 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 09:35:20,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607071775] [2020-10-12 09:35:20,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:20,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 09:35:20,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38080903] [2020-10-12 09:35:20,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 09:35:20,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:20,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 09:35:20,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 09:35:20,057 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 8 states. [2020-10-12 09:35:20,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:20,234 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-10-12 09:35:20,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 09:35:20,234 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-10-12 09:35:20,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:20,235 INFO L225 Difference]: With dead ends: 60 [2020-10-12 09:35:20,235 INFO L226 Difference]: Without dead ends: 36 [2020-10-12 09:35:20,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-12 09:35:20,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-12 09:35:20,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-12 09:35:20,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-12 09:35:20,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-12 09:35:20,251 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 56 [2020-10-12 09:35:20,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:20,251 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-12 09:35:20,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 09:35:20,251 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-12 09:35:20,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-12 09:35:20,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:20,255 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:35:20,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 09:35:20,256 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:20,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:20,257 INFO L82 PathProgramCache]: Analyzing trace with hash -754016383, now seen corresponding path program 5 times [2020-10-12 09:35:20,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:20,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056399353] [2020-10-12 09:35:20,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:20,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:20,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:20,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:20,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:20,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:21,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:25,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:25,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 09:35:25,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:25,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 09:35:25,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:25,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 09:35:25,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-12 09:35:25,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 09:35:25,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:25,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:25,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:25,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:25,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:25,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:25,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:25,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:35:25,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:25,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:25,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:25,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:25,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:25,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:25,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:25,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:25,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:25,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:25,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 09:35:25,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:25,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 09:35:25,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:25,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 09:35:25,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:25,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 09:35:25,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:25,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-12 09:35:25,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:25,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:25,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:25,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:25,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 09:35:25,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:25,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 09:35:25,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:25,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 09:35:25,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:25,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 09:35:25,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:25,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 09:35:25,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:25,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:25,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:25,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 09:35:25,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:25,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 09:35:25,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:25,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 09:35:25,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:25,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 09:35:25,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:25,436 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 75 proven. 150 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-12 09:35:25,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056399353] [2020-10-12 09:35:25,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:25,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 09:35:25,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385572636] [2020-10-12 09:35:25,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 09:35:25,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:25,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 09:35:25,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 09:35:25,439 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 9 states. [2020-10-12 09:35:25,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:25,631 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-10-12 09:35:25,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 09:35:25,632 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-10-12 09:35:25,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:25,633 INFO L225 Difference]: With dead ends: 64 [2020-10-12 09:35:25,633 INFO L226 Difference]: Without dead ends: 38 [2020-10-12 09:35:25,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-12 09:35:25,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-12 09:35:25,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-12 09:35:25,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-12 09:35:25,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-12 09:35:25,640 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 62 [2020-10-12 09:35:25,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:25,640 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-12 09:35:25,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 09:35:25,641 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-12 09:35:25,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 09:35:25,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:25,642 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:35:25,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 09:35:25,642 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:25,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:25,643 INFO L82 PathProgramCache]: Analyzing trace with hash 2026447487, now seen corresponding path program 6 times [2020-10-12 09:35:25,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:25,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120498979] [2020-10-12 09:35:25,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:25,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:25,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:25,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:25,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:27,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:30,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:30,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 09:35:30,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:30,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 09:35:30,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:30,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 09:35:30,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-12 09:35:30,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 09:35:30,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:30,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:30,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:30,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:30,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:30,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:30,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:30,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:35:30,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:30,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:30,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:30,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:30,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:30,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:30,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:30,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:30,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:30,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:30,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 09:35:30,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:30,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 09:35:30,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:30,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 09:35:30,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:30,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 09:35:30,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:30,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 09:35:30,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:30,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:30,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:30,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:30,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 09:35:30,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:30,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 09:35:30,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:30,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 09:35:30,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:30,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 09:35:30,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:30,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 09:35:30,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:30,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:30,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:30,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 09:35:30,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:30,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 09:35:30,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:30,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 09:35:30,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:30,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 09:35:30,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:30,855 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 108 proven. 216 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-12 09:35:30,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120498979] [2020-10-12 09:35:30,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:30,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 09:35:30,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588347850] [2020-10-12 09:35:30,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 09:35:30,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:30,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 09:35:30,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-12 09:35:30,858 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 10 states. [2020-10-12 09:35:31,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:31,107 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-10-12 09:35:31,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 09:35:31,107 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-10-12 09:35:31,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:31,108 INFO L225 Difference]: With dead ends: 68 [2020-10-12 09:35:31,108 INFO L226 Difference]: Without dead ends: 40 [2020-10-12 09:35:31,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-12 09:35:31,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-12 09:35:31,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-12 09:35:31,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-12 09:35:31,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-12 09:35:31,115 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 68 [2020-10-12 09:35:31,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:31,116 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-12 09:35:31,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 09:35:31,116 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-12 09:35:31,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-12 09:35:31,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:31,117 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:35:31,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 09:35:31,118 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:31,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:31,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1267511037, now seen corresponding path program 7 times [2020-10-12 09:35:31,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:31,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1347315789] [2020-10-12 09:35:31,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:31,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:31,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:31,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:31,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:33,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:36,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:36,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 09:35:36,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:36,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 09:35:36,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:36,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 09:35:36,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:35:36,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 09:35:36,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:36,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:36,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:36,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:36,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:36,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:36,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:35:36,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:36,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:36,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:36,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:36,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:36,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:36,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:36,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:36,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:36,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 09:35:36,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:36,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 09:35:36,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:36,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 09:35:36,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:36,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 09:35:36,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:36,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 09:35:36,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:36,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:36,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:36,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:36,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 09:35:36,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:36,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 09:35:36,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:36,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 09:35:36,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:36,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 09:35:36,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:36,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 09:35:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:36,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:36,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:36,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:36,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 09:35:36,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:36,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 09:35:36,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:36,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 09:35:36,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:36,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 09:35:36,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:36,332 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 147 proven. 294 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-12 09:35:36,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1347315789] [2020-10-12 09:35:36,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:36,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 09:35:36,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893887934] [2020-10-12 09:35:36,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 09:35:36,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:36,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 09:35:36,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-12 09:35:36,335 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 11 states. [2020-10-12 09:35:36,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:36,584 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-10-12 09:35:36,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 09:35:36,584 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 74 [2020-10-12 09:35:36,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:36,585 INFO L225 Difference]: With dead ends: 72 [2020-10-12 09:35:36,585 INFO L226 Difference]: Without dead ends: 42 [2020-10-12 09:35:36,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-12 09:35:36,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-12 09:35:36,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-12 09:35:36,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-12 09:35:36,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-12 09:35:36,592 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 74 [2020-10-12 09:35:36,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:36,592 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-12 09:35:36,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 09:35:36,593 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-12 09:35:36,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 09:35:36,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:36,594 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:35:36,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 09:35:36,595 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:36,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:36,595 INFO L82 PathProgramCache]: Analyzing trace with hash 303277307, now seen corresponding path program 8 times [2020-10-12 09:35:36,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:36,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204198808] [2020-10-12 09:35:36,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:36,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:36,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:36,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:36,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:36,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:38,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:41,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:41,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 09:35:41,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:41,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 09:35:41,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:41,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 09:35:41,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-12 09:35:41,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 09:35:41,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:41,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:41,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:41,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:41,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:41,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:41,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:35:41,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:41,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:41,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:41,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:41,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:41,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:41,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:41,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:41,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:41,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:41,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 09:35:41,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:41,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 09:35:41,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:41,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 09:35:41,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:41,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 09:35:41,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:41,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 09:35:41,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:41,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:41,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:41,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:41,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 09:35:41,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:41,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 09:35:41,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:41,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 09:35:41,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:41,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 09:35:41,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:41,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 09:35:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:41,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:41,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:41,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 09:35:41,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:41,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 09:35:41,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:41,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 09:35:41,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:41,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 09:35:41,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:41,822 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 192 proven. 384 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-12 09:35:41,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204198808] [2020-10-12 09:35:41,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:41,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 09:35:41,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724823831] [2020-10-12 09:35:41,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 09:35:41,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:41,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 09:35:41,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-12 09:35:41,825 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 12 states. [2020-10-12 09:35:42,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:42,117 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-10-12 09:35:42,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 09:35:42,118 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 80 [2020-10-12 09:35:42,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:42,119 INFO L225 Difference]: With dead ends: 76 [2020-10-12 09:35:42,119 INFO L226 Difference]: Without dead ends: 44 [2020-10-12 09:35:42,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-12 09:35:42,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-12 09:35:42,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-12 09:35:42,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-12 09:35:42,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-12 09:35:42,127 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 80 [2020-10-12 09:35:42,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:42,127 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-12 09:35:42,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 09:35:42,128 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-12 09:35:42,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-12 09:35:42,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:42,129 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:35:42,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 09:35:42,129 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:42,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:42,130 INFO L82 PathProgramCache]: Analyzing trace with hash 439379065, now seen corresponding path program 9 times [2020-10-12 09:35:42,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:42,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1427362255] [2020-10-12 09:35:42,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:42,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:42,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:42,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:42,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:42,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:45,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:47,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:47,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 09:35:47,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:47,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 09:35:47,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:47,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 09:35:47,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-12 09:35:47,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 09:35:47,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:47,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:47,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:47,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:47,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:47,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:47,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:47,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:35:47,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:47,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:47,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:47,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:47,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:47,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:47,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:47,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:47,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:47,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:47,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 09:35:47,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:47,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 09:35:47,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:47,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 09:35:47,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:47,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 09:35:47,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:47,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-12 09:35:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:47,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:47,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:47,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:47,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 09:35:47,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:47,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 09:35:47,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:47,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 09:35:47,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:47,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 09:35:47,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:47,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-12 09:35:47,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:47,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:47,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:47,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 09:35:47,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:47,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 09:35:47,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:47,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 09:35:47,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:47,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 09:35:47,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:47,404 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 243 proven. 486 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-12 09:35:47,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1427362255] [2020-10-12 09:35:47,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:47,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 09:35:47,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309743380] [2020-10-12 09:35:47,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 09:35:47,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:47,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 09:35:47,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-12 09:35:47,407 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 13 states. [2020-10-12 09:35:47,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:47,697 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-10-12 09:35:47,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 09:35:47,698 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 86 [2020-10-12 09:35:47,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:47,699 INFO L225 Difference]: With dead ends: 80 [2020-10-12 09:35:47,699 INFO L226 Difference]: Without dead ends: 46 [2020-10-12 09:35:47,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-12 09:35:47,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-12 09:35:47,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-12 09:35:47,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-12 09:35:47,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-12 09:35:47,714 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 86 [2020-10-12 09:35:47,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:47,715 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-12 09:35:47,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 09:35:47,717 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-12 09:35:47,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-12 09:35:47,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:47,718 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:35:47,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 09:35:47,719 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:47,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:47,719 INFO L82 PathProgramCache]: Analyzing trace with hash -825406089, now seen corresponding path program 10 times [2020-10-12 09:35:47,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:47,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179508859] [2020-10-12 09:35:47,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:47,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:47,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:47,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:47,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:47,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:51,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:52,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:52,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 09:35:52,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:52,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 09:35:52,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:52,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 09:35:52,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:35:52,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 09:35:52,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:52,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:52,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:52,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:52,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:52,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:52,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:52,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:35:52,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:52,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:52,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:52,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:52,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:52,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:52,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:52,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:52,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:52,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 09:35:52,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:52,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 09:35:52,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:52,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 09:35:52,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:52,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 09:35:52,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:52,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-12 09:35:52,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:52,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:52,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:52,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:52,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 09:35:52,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:52,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 09:35:52,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:52,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 09:35:52,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:52,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 09:35:52,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:52,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 09:35:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:52,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:52,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:52,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:52,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 09:35:52,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:52,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 09:35:52,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:52,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 09:35:52,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:52,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 09:35:52,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:52,988 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 300 proven. 600 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-12 09:35:52,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179508859] [2020-10-12 09:35:52,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:52,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 09:35:52,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728863930] [2020-10-12 09:35:52,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 09:35:52,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:52,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 09:35:52,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-12 09:35:52,991 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 14 states. [2020-10-12 09:35:53,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:53,317 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-10-12 09:35:53,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 09:35:53,317 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 92 [2020-10-12 09:35:53,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:53,318 INFO L225 Difference]: With dead ends: 84 [2020-10-12 09:35:53,319 INFO L226 Difference]: Without dead ends: 48 [2020-10-12 09:35:53,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-12 09:35:53,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-12 09:35:53,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-12 09:35:53,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-12 09:35:53,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-12 09:35:53,326 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 92 [2020-10-12 09:35:53,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:53,326 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-12 09:35:53,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 09:35:53,326 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-12 09:35:53,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-12 09:35:53,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:53,328 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:35:53,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 09:35:53,328 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:53,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:53,328 INFO L82 PathProgramCache]: Analyzing trace with hash -840122379, now seen corresponding path program 11 times [2020-10-12 09:35:53,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:53,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159498059] [2020-10-12 09:35:53,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:53,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:53,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:53,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:53,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:53,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:57,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:58,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:58,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 09:35:58,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:58,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 09:35:58,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:58,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 09:35:58,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 09:35:58,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 09:35:58,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:58,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:58,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:58,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:58,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:58,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:58,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:58,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:35:58,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:58,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:58,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:58,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:58,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:58,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:58,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:58,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:58,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:58,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:58,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 09:35:58,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:58,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-12 09:35:58,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:58,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 09:35:58,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:58,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 09:35:58,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:58,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 09:35:58,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:58,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:58,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:58,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 09:35:58,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:58,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 09:35:58,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:58,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 09:35:58,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:58,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 09:35:58,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:58,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-12 09:35:58,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:58,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:58,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:58,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:58,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 09:35:58,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:58,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 09:35:58,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:58,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 09:35:58,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:58,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 09:35:58,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:58,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 363 proven. 726 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-12 09:35:58,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159498059] [2020-10-12 09:35:58,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:58,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 09:35:58,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855255224] [2020-10-12 09:35:58,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 09:35:58,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:58,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 09:35:58,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-12 09:35:58,610 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 15 states. [2020-10-12 09:35:58,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:58,943 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2020-10-12 09:35:58,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 09:35:58,943 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 98 [2020-10-12 09:35:58,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:58,944 INFO L225 Difference]: With dead ends: 88 [2020-10-12 09:35:58,944 INFO L226 Difference]: Without dead ends: 50 [2020-10-12 09:35:58,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-12 09:35:58,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-12 09:35:58,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-12 09:35:58,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-12 09:35:58,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-12 09:35:58,956 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 98 [2020-10-12 09:35:58,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:58,959 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-12 09:35:58,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 09:35:58,959 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-12 09:35:58,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-12 09:35:58,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:58,960 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:35:58,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 09:35:58,960 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:58,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:58,963 INFO L82 PathProgramCache]: Analyzing trace with hash 2125011955, now seen corresponding path program 12 times [2020-10-12 09:35:58,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:58,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [725325385] [2020-10-12 09:35:58,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:58,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:58,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:59,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:59,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:03,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:03,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 09:36:03,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:03,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 09:36:03,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:03,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 09:36:03,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:36:03,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 09:36:03,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:04,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:04,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:04,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:04,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:04,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:04,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:04,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:36:04,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:04,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:04,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:04,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:04,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:04,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:04,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:04,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:04,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:04,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 09:36:04,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:04,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-12 09:36:04,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:04,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 09:36:04,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:04,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 09:36:04,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:36:04,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 09:36:04,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:04,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:04,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:04,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:04,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 09:36:04,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:04,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-12 09:36:04,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:04,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 09:36:04,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:04,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 09:36:04,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:04,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-12 09:36:04,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:04,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:04,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:04,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:04,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 09:36:04,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:04,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 09:36:04,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:04,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 09:36:04,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:04,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 09:36:04,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:04,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 432 proven. 864 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-12 09:36:04,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [725325385] [2020-10-12 09:36:04,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:04,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 09:36:04,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465162863] [2020-10-12 09:36:04,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 09:36:04,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:04,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 09:36:04,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-12 09:36:04,387 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 16 states. [2020-10-12 09:36:04,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:04,851 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2020-10-12 09:36:04,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 09:36:04,852 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 104 [2020-10-12 09:36:04,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:04,855 INFO L225 Difference]: With dead ends: 92 [2020-10-12 09:36:04,855 INFO L226 Difference]: Without dead ends: 52 [2020-10-12 09:36:04,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-12 09:36:04,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-12 09:36:04,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-12 09:36:04,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-12 09:36:04,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-12 09:36:04,870 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 104 [2020-10-12 09:36:04,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:04,870 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-12 09:36:04,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 09:36:04,871 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-12 09:36:04,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 09:36:04,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:04,874 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:36:04,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 09:36:04,874 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:04,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:04,875 INFO L82 PathProgramCache]: Analyzing trace with hash 657768817, now seen corresponding path program 13 times [2020-10-12 09:36:04,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:04,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607769839] [2020-10-12 09:36:04,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:04,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:04,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:04,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:04,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:04,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:09,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:09,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 09:36:09,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:09,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 09:36:09,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:09,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 09:36:09,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-12 09:36:09,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 09:36:09,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:09,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:09,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:09,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:09,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:09,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:09,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:09,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:36:09,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:09,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:09,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:09,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:09,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:09,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:09,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:09,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:09,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:09,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 09:36:09,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:09,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-12 09:36:09,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:09,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 09:36:09,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:09,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 09:36:09,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:10,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 09:36:10,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:10,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:10,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:10,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 09:36:10,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:10,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 09:36:10,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:10,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 09:36:10,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:10,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 09:36:10,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:10,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-12 09:36:10,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:10,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:10,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:10,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:10,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 09:36:10,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:10,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-12 09:36:10,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:10,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 09:36:10,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:10,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 09:36:10,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:10,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1614 backedges. 507 proven. 1014 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-12 09:36:10,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607769839] [2020-10-12 09:36:10,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:10,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 09:36:10,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718198759] [2020-10-12 09:36:10,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 09:36:10,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:10,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 09:36:10,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-12 09:36:10,249 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 17 states. [2020-10-12 09:36:10,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:10,715 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2020-10-12 09:36:10,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 09:36:10,715 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 110 [2020-10-12 09:36:10,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:10,717 INFO L225 Difference]: With dead ends: 96 [2020-10-12 09:36:10,717 INFO L226 Difference]: Without dead ends: 54 [2020-10-12 09:36:10,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-12 09:36:10,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-12 09:36:10,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-12 09:36:10,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-12 09:36:10,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-12 09:36:10,738 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 110 [2020-10-12 09:36:10,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:10,738 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-12 09:36:10,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 09:36:10,739 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-12 09:36:10,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 09:36:10,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:10,744 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:36:10,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 09:36:10,745 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:10,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:10,745 INFO L82 PathProgramCache]: Analyzing trace with hash -2099638161, now seen corresponding path program 14 times [2020-10-12 09:36:10,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:10,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756276087] [2020-10-12 09:36:10,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:10,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:10,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:10,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:10,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:10,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:15,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:15,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:15,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 09:36:15,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:36:15,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 09:36:15,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:15,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 09:36:15,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-12 09:36:15,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 09:36:15,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:15,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:15,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:15,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:15,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:15,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:15,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:36:15,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:15,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:15,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:15,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:15,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:15,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:15,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:15,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:15,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:15,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:15,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 09:36:15,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:15,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 09:36:15,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:15,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 09:36:15,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:15,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 09:36:15,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:16,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 09:36:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:16,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:16,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:16,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 09:36:16,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:16,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-12 09:36:16,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:16,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 09:36:16,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:16,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 09:36:16,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:16,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-12 09:36:16,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:16,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:16,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:16,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:16,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 09:36:16,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:16,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-12 09:36:16,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:16,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 09:36:16,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:16,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 09:36:16,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:36:16,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 588 proven. 1176 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-12 09:36:16,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756276087] [2020-10-12 09:36:16,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:16,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 09:36:16,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370399149] [2020-10-12 09:36:16,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 09:36:16,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:16,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 09:36:16,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-12 09:36:16,283 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 18 states. [2020-10-12 09:36:16,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:16,873 INFO L93 Difference]: Finished difference Result 100 states and 110 transitions. [2020-10-12 09:36:16,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 09:36:16,873 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 116 [2020-10-12 09:36:16,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:16,875 INFO L225 Difference]: With dead ends: 100 [2020-10-12 09:36:16,875 INFO L226 Difference]: Without dead ends: 56 [2020-10-12 09:36:16,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 09:36:16,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-12 09:36:16,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-12 09:36:16,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-12 09:36:16,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-12 09:36:16,897 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 116 [2020-10-12 09:36:16,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:16,898 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-12 09:36:16,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 09:36:16,899 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-12 09:36:16,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 09:36:16,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:16,903 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:36:16,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 09:36:16,907 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:16,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:16,908 INFO L82 PathProgramCache]: Analyzing trace with hash -671389459, now seen corresponding path program 15 times [2020-10-12 09:36:16,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:16,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907140379] [2020-10-12 09:36:16,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:16,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:16,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:16,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:16,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:16,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:21,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:21,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-12 09:36:21,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:21,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 09:36:21,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:21,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 09:36:21,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 09:36:21,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 09:36:21,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:21,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:21,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:21,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:21,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:21,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:21,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:36:21,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:21,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:21,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:21,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:21,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:21,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:21,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:21,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:21,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:22,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:22,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 09:36:22,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:22,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-12 09:36:22,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:22,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 09:36:22,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:22,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 09:36:22,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:22,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 09:36:22,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:22,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:22,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:22,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 09:36:22,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:22,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 09:36:22,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:22,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 09:36:22,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:22,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 09:36:22,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:22,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 09:36:22,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:22,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:22,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:22,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:22,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 09:36:22,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:22,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-12 09:36:22,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:22,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 09:36:22,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:22,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 09:36:22,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:22,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2130 backedges. 675 proven. 1350 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-12 09:36:22,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907140379] [2020-10-12 09:36:22,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:22,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 09:36:22,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779619875] [2020-10-12 09:36:22,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 09:36:22,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:22,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 09:36:22,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-12 09:36:22,397 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 19 states. [2020-10-12 09:36:22,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:22,898 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2020-10-12 09:36:22,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 09:36:22,898 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 122 [2020-10-12 09:36:22,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:22,899 INFO L225 Difference]: With dead ends: 104 [2020-10-12 09:36:22,900 INFO L226 Difference]: Without dead ends: 58 [2020-10-12 09:36:22,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 09:36:22,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-12 09:36:22,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-12 09:36:22,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-12 09:36:22,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-12 09:36:22,917 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 122 [2020-10-12 09:36:22,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:22,917 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-12 09:36:22,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 09:36:22,917 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-12 09:36:22,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-12 09:36:22,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:22,920 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:36:22,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 09:36:22,920 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:22,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:22,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1911346453, now seen corresponding path program 16 times [2020-10-12 09:36:22,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:22,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301051321] [2020-10-12 09:36:22,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:22,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:22,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:22,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:22,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:27,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:27,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-12 09:36:27,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:27,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 09:36:27,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:27,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 09:36:27,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-12 09:36:27,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 09:36:27,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:27,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:27,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:27,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:27,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:27,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:27,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:27,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:36:27,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:27,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:27,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:27,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:27,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:27,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:27,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:27,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:27,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:28,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:28,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 09:36:28,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:28,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-12 09:36:28,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:28,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 09:36:28,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:28,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 09:36:28,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:28,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 09:36:28,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:28,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:28,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:28,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 09:36:28,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:28,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 09:36:28,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:28,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 09:36:28,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:28,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 09:36:28,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:28,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 09:36:28,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:28,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:28,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:28,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:28,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 09:36:28,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:28,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-12 09:36:28,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:28,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 09:36:28,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:28,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 09:36:28,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:28,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 768 proven. 1536 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-12 09:36:28,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301051321] [2020-10-12 09:36:28,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:28,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 09:36:28,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903469989] [2020-10-12 09:36:28,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 09:36:28,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:28,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 09:36:28,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-12 09:36:28,414 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 20 states. [2020-10-12 09:36:28,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:28,881 INFO L93 Difference]: Finished difference Result 108 states and 118 transitions. [2020-10-12 09:36:28,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 09:36:28,882 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 128 [2020-10-12 09:36:28,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:28,882 INFO L225 Difference]: With dead ends: 108 [2020-10-12 09:36:28,883 INFO L226 Difference]: Without dead ends: 60 [2020-10-12 09:36:28,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 09:36:28,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-12 09:36:28,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-12 09:36:28,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-12 09:36:28,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-12 09:36:28,889 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 128 [2020-10-12 09:36:28,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:28,889 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-12 09:36:28,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 09:36:28,890 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-12 09:36:28,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-12 09:36:28,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:28,891 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:36:28,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 09:36:28,891 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:28,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:28,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1135851113, now seen corresponding path program 17 times [2020-10-12 09:36:28,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:28,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1504413326] [2020-10-12 09:36:28,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:28,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:28,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:28,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:28,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:28,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:33,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:33,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 09:36:33,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:33,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 09:36:33,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:33,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 09:36:33,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:36:33,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 09:36:33,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:33,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:33,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:33,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:33,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:33,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:33,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:33,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:36:33,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:33,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:33,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:33,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:33,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:33,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:33,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:33,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:33,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:33,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 09:36:33,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:33,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-12 09:36:33,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:33,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 09:36:33,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:33,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 09:36:33,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:34,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 09:36:34,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:34,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:34,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:34,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:34,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 09:36:34,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:34,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-12 09:36:34,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:34,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 09:36:34,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:34,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 09:36:34,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:34,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-12 09:36:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:34,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:34,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:34,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:34,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 09:36:34,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:34,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-12 09:36:34,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:34,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 09:36:34,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:34,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 09:36:34,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:34,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2718 backedges. 867 proven. 1734 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-12 09:36:34,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1504413326] [2020-10-12 09:36:34,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:34,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 09:36:34,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941255258] [2020-10-12 09:36:34,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 09:36:34,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:34,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 09:36:34,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-12 09:36:34,404 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 21 states. [2020-10-12 09:36:34,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:34,938 INFO L93 Difference]: Finished difference Result 112 states and 122 transitions. [2020-10-12 09:36:34,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 09:36:34,939 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 134 [2020-10-12 09:36:34,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:34,940 INFO L225 Difference]: With dead ends: 112 [2020-10-12 09:36:34,940 INFO L226 Difference]: Without dead ends: 62 [2020-10-12 09:36:34,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 09:36:34,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-12 09:36:34,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-12 09:36:34,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-12 09:36:34,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-12 09:36:34,947 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 134 [2020-10-12 09:36:34,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:34,947 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-12 09:36:34,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 09:36:34,947 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-12 09:36:34,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-12 09:36:34,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:34,949 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:36:34,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 09:36:34,949 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:34,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:34,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1686596455, now seen corresponding path program 18 times [2020-10-12 09:36:34,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:34,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848110024] [2020-10-12 09:36:34,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:34,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:34,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:34,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:34,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:35,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:39,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:39,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-12 09:36:39,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:39,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 09:36:39,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:39,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 09:36:39,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 09:36:39,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 09:36:39,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:39,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:39,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:39,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:39,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:39,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:39,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:39,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:36:39,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:39,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:39,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:39,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:39,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:39,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:39,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:39,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:40,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:40,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 09:36:40,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:40,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-12 09:36:40,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:40,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 09:36:40,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:40,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 09:36:40,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:40,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-12 09:36:40,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:40,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:40,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:40,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 09:36:40,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:40,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-12 09:36:40,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:40,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 09:36:40,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:40,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 09:36:40,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:40,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 09:36:40,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:40,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:40,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:40,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:40,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 09:36:40,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:40,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-12 09:36:40,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:40,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 09:36:40,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:40,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 09:36:40,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:40,634 INFO L134 CoverageAnalysis]: Checked inductivity of 3039 backedges. 972 proven. 1944 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-12 09:36:40,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848110024] [2020-10-12 09:36:40,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:40,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 09:36:40,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033500844] [2020-10-12 09:36:40,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 09:36:40,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:40,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 09:36:40,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-12 09:36:40,638 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 22 states. [2020-10-12 09:36:41,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:41,210 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2020-10-12 09:36:41,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 09:36:41,211 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 140 [2020-10-12 09:36:41,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:41,212 INFO L225 Difference]: With dead ends: 116 [2020-10-12 09:36:41,212 INFO L226 Difference]: Without dead ends: 64 [2020-10-12 09:36:41,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 09:36:41,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-12 09:36:41,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-12 09:36:41,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-12 09:36:41,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-12 09:36:41,225 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 140 [2020-10-12 09:36:41,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:41,225 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-12 09:36:41,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 09:36:41,225 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-12 09:36:41,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-12 09:36:41,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:41,227 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:36:41,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 09:36:41,228 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:41,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:41,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1062250981, now seen corresponding path program 19 times [2020-10-12 09:36:41,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:41,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001149337] [2020-10-12 09:36:41,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:41,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:41,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:41,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:41,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:41,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:46,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:46,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-12 09:36:46,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:46,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 09:36:46,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:46,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 09:36:46,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-12 09:36:46,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 09:36:46,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:46,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:46,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:46,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:46,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:46,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:46,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:46,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 09:36:46,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:46,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:46,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:46,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:46,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-12 09:36:46,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:46,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:46,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:46,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:46,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:46,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 09:36:46,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:46,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-12 09:36:46,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:46,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 09:36:46,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:46,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 09:36:46,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:46,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-12 09:36:46,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:46,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:46,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:46,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 09:36:46,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:46,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-12 09:36:46,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:46,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 09:36:46,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:46,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 09:36:46,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:46,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-12 09:36:46,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:46,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:46,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:46,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:46,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 09:36:46,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:46,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-12 09:36:46,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:46,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 09:36:46,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:46,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 09:36:46,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:46,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3378 backedges. 1083 proven. 2166 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-12 09:36:46,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001149337] [2020-10-12 09:36:46,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:46,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 09:36:46,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695506444] [2020-10-12 09:36:46,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 09:36:46,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:46,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 09:36:46,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-12 09:36:46,965 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 23 states. [2020-10-12 09:36:47,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:47,556 INFO L93 Difference]: Finished difference Result 120 states and 130 transitions. [2020-10-12 09:36:47,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 09:36:47,557 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 146 [2020-10-12 09:36:47,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:47,558 INFO L225 Difference]: With dead ends: 120 [2020-10-12 09:36:47,558 INFO L226 Difference]: Without dead ends: 66 [2020-10-12 09:36:47,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2020-10-12 09:36:47,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-12 09:36:47,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-12 09:36:47,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-12 09:36:47,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-12 09:36:47,577 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 146 [2020-10-12 09:36:47,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:47,578 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-12 09:36:47,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 09:36:47,579 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-12 09:36:47,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-12 09:36:47,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:47,580 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:36:47,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 09:36:47,581 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:47,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:47,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1679175197, now seen corresponding path program 20 times [2020-10-12 09:36:47,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:47,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823720552] [2020-10-12 09:36:47,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:47,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:47,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:47,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:47,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:47,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:52,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:52,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-12 09:36:52,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:52,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 09:36:52,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:52,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 09:36:52,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-12 09:36:52,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 09:36:52,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:52,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:52,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:52,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:52,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:52,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:52,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:52,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:36:52,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:52,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:52,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:52,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:52,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:52,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:52,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:52,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:52,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:52,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:52,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 09:36:52,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:52,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-12 09:36:52,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:52,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 09:36:52,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:52,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 09:36:52,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:53,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 09:36:53,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:53,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:53,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:53,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 09:36:53,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:53,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-12 09:36:53,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:53,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 09:36:53,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:53,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 09:36:53,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:53,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-12 09:36:53,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:53,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:53,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:53,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:53,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 09:36:53,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:53,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-12 09:36:53,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:53,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 09:36:53,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:53,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 09:36:53,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:53,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3735 backedges. 1200 proven. 2400 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-12 09:36:53,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823720552] [2020-10-12 09:36:53,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:53,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-12 09:36:53,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127726030] [2020-10-12 09:36:53,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-12 09:36:53,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:53,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-12 09:36:53,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-12 09:36:53,246 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 24 states. [2020-10-12 09:36:53,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:53,906 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2020-10-12 09:36:53,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 09:36:53,907 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 152 [2020-10-12 09:36:53,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:53,908 INFO L225 Difference]: With dead ends: 124 [2020-10-12 09:36:53,908 INFO L226 Difference]: Without dead ends: 68 [2020-10-12 09:36:53,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2020-10-12 09:36:53,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-12 09:36:53,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-12 09:36:53,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-12 09:36:53,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-12 09:36:53,920 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 152 [2020-10-12 09:36:53,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:53,920 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-12 09:36:53,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-12 09:36:53,921 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-12 09:36:53,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-12 09:36:53,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:53,922 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:36:53,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 09:36:53,924 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:53,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:53,924 INFO L82 PathProgramCache]: Analyzing trace with hash -783989919, now seen corresponding path program 21 times [2020-10-12 09:36:53,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:53,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286677564] [2020-10-12 09:36:53,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:53,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:53,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:53,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:53,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:53,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:58,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:58,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-12 09:36:58,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:58,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 09:36:58,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:58,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 09:36:58,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:36:58,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 09:36:58,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:58,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:58,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:58,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:58,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:58,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:58,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:36:58,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:58,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:58,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:58,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:58,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:58,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:58,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:58,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:59,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:59,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 09:36:59,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:59,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-12 09:36:59,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:59,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 09:36:59,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:59,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 09:36:59,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:59,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-12 09:36:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:59,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:59,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:59,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:59,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 09:36:59,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:59,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-12 09:36:59,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:59,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 09:36:59,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:59,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 09:36:59,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:59,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-12 09:36:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:59,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:59,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:59,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:59,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 09:36:59,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:59,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-12 09:36:59,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:59,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 09:36:59,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:59,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 09:36:59,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:59,626 INFO L134 CoverageAnalysis]: Checked inductivity of 4110 backedges. 1323 proven. 2646 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-10-12 09:36:59,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286677564] [2020-10-12 09:36:59,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:59,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-12 09:36:59,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955282596] [2020-10-12 09:36:59,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-12 09:36:59,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:59,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-12 09:36:59,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-12 09:36:59,628 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 25 states. [2020-10-12 09:37:00,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:37:00,295 INFO L93 Difference]: Finished difference Result 128 states and 138 transitions. [2020-10-12 09:37:00,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 09:37:00,297 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 158 [2020-10-12 09:37:00,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:37:00,298 INFO L225 Difference]: With dead ends: 128 [2020-10-12 09:37:00,298 INFO L226 Difference]: Without dead ends: 70 [2020-10-12 09:37:00,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2020-10-12 09:37:00,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-12 09:37:00,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-12 09:37:00,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-12 09:37:00,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-12 09:37:00,309 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 158 [2020-10-12 09:37:00,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:37:00,310 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-12 09:37:00,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-12 09:37:00,310 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-12 09:37:00,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-12 09:37:00,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:37:00,312 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:37:00,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 09:37:00,312 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:37:00,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:37:00,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1533894239, now seen corresponding path program 22 times [2020-10-12 09:37:00,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:37:00,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656045268] [2020-10-12 09:37:00,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:37:00,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:00,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:00,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:00,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:00,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:05,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:05,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-12 09:37:05,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:37:05,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 09:37:05,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:05,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 09:37:05,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:37:05,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 09:37:05,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:05,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:37:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:05,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:05,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:05,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:37:05,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:05,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:37:05,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:05,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:37:05,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:05,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:37:05,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:05,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:37:05,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:05,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:05,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:05,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 09:37:05,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:05,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-12 09:37:05,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:05,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 09:37:05,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:05,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 09:37:05,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:05,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 09:37:05,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:05,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:05,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:05,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:05,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 09:37:05,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:05,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-12 09:37:05,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:05,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 09:37:05,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:05,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 09:37:05,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:05,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-12 09:37:05,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:05,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:05,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:06,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:06,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 09:37:06,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:06,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-12 09:37:06,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:06,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 09:37:06,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:06,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 09:37:06,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:06,038 INFO L134 CoverageAnalysis]: Checked inductivity of 4503 backedges. 1452 proven. 2904 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-12 09:37:06,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656045268] [2020-10-12 09:37:06,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:37:06,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-12 09:37:06,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297100322] [2020-10-12 09:37:06,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-12 09:37:06,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:37:06,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-12 09:37:06,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-12 09:37:06,041 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 26 states. [2020-10-12 09:37:06,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:37:06,738 INFO L93 Difference]: Finished difference Result 132 states and 142 transitions. [2020-10-12 09:37:06,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 09:37:06,739 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 164 [2020-10-12 09:37:06,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:37:06,740 INFO L225 Difference]: With dead ends: 132 [2020-10-12 09:37:06,740 INFO L226 Difference]: Without dead ends: 72 [2020-10-12 09:37:06,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352 [2020-10-12 09:37:06,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-12 09:37:06,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-12 09:37:06,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-12 09:37:06,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-12 09:37:06,747 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 164 [2020-10-12 09:37:06,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:37:06,747 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-12 09:37:06,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-12 09:37:06,748 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-12 09:37:06,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-12 09:37:06,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:37:06,749 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:37:06,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 09:37:06,749 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:37:06,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:37:06,750 INFO L82 PathProgramCache]: Analyzing trace with hash -242973987, now seen corresponding path program 23 times [2020-10-12 09:37:06,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:37:06,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1161023757] [2020-10-12 09:37:06,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:37:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:06,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:06,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:06,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:06,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:11,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:11,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-12 09:37:11,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:37:11,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 09:37:11,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:11,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 09:37:11,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-12 09:37:11,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 09:37:11,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:11,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:37:11,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:11,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:11,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:11,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:37:11,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:11,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:37:11,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:11,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:37:11,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:11,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:37:11,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:11,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:37:11,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:11,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:11,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:11,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:11,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 09:37:11,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:11,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-12 09:37:11,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:11,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 09:37:11,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:11,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 09:37:11,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:12,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-12 09:37:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:12,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:12,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:12,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 09:37:12,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:12,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-12 09:37:12,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:12,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 09:37:12,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:12,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 09:37:12,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:12,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-12 09:37:12,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:12,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:12,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:12,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:12,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 09:37:12,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:12,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-12 09:37:12,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:12,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 09:37:12,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:12,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 09:37:12,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:37:12,679 INFO L134 CoverageAnalysis]: Checked inductivity of 4914 backedges. 1587 proven. 3174 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-12 09:37:12,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1161023757] [2020-10-12 09:37:12,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:37:12,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-12 09:37:12,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449727974] [2020-10-12 09:37:12,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-12 09:37:12,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:37:12,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-12 09:37:12,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-12 09:37:12,682 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 27 states. [2020-10-12 09:37:13,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:37:13,642 INFO L93 Difference]: Finished difference Result 136 states and 146 transitions. [2020-10-12 09:37:13,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 09:37:13,643 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 170 [2020-10-12 09:37:13,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:37:13,644 INFO L225 Difference]: With dead ends: 136 [2020-10-12 09:37:13,644 INFO L226 Difference]: Without dead ends: 74 [2020-10-12 09:37:13,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2020-10-12 09:37:13,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-12 09:37:13,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-12 09:37:13,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-12 09:37:13,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-12 09:37:13,651 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 170 [2020-10-12 09:37:13,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:37:13,652 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-12 09:37:13,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-12 09:37:13,652 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-12 09:37:13,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-12 09:37:13,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:37:13,655 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:37:13,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 09:37:13,659 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:37:13,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:37:13,660 INFO L82 PathProgramCache]: Analyzing trace with hash 465899739, now seen corresponding path program 24 times [2020-10-12 09:37:13,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:37:13,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632291667] [2020-10-12 09:37:13,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:37:13,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:13,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:13,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:13,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:13,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:18,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:18,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-12 09:37:18,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:37:18,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 09:37:18,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:18,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 09:37:18,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-12 09:37:18,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 09:37:18,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:18,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:37:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:18,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:18,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:18,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:37:18,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:18,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:37:18,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:18,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:37:18,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:18,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:37:18,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:18,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:37:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:18,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:18,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:18,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:18,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 09:37:18,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:18,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-12 09:37:18,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:18,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 09:37:18,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:18,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 09:37:18,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:37:19,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-12 09:37:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:19,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:19,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:19,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 09:37:19,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:19,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-12 09:37:19,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:19,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 09:37:19,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:19,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 09:37:19,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:19,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-12 09:37:19,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:19,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:19,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:19,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:19,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 09:37:19,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:19,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-12 09:37:19,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:19,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 09:37:19,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:19,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 09:37:19,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:37:19,924 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 1728 proven. 3456 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-12 09:37:19,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632291667] [2020-10-12 09:37:19,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:37:19,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-12 09:37:19,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822670152] [2020-10-12 09:37:19,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-12 09:37:19,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:37:19,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-12 09:37:19,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-12 09:37:19,927 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 28 states. [2020-10-12 09:37:20,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:37:20,780 INFO L93 Difference]: Finished difference Result 140 states and 150 transitions. [2020-10-12 09:37:20,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-12 09:37:20,780 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 176 [2020-10-12 09:37:20,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:37:20,781 INFO L225 Difference]: With dead ends: 140 [2020-10-12 09:37:20,781 INFO L226 Difference]: Without dead ends: 76 [2020-10-12 09:37:20,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756 [2020-10-12 09:37:20,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-12 09:37:20,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-12 09:37:20,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-12 09:37:20,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-12 09:37:20,791 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 176 [2020-10-12 09:37:20,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:37:20,791 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-12 09:37:20,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-12 09:37:20,791 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-12 09:37:20,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-12 09:37:20,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:37:20,793 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:37:20,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 09:37:20,794 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:37:20,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:37:20,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1233217625, now seen corresponding path program 25 times [2020-10-12 09:37:20,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:37:20,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582164012] [2020-10-12 09:37:20,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:37:20,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:20,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:20,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:20,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:20,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:25,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:25,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-12 09:37:25,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:37:25,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 09:37:25,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:25,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 09:37:25,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-12 09:37:25,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 09:37:25,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:25,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:37:25,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:25,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:25,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:25,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:37:25,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:25,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:37:25,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:25,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:37:25,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:25,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:37:25,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:25,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:37:25,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:25,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:25,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:25,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:25,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 09:37:25,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:25,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-12 09:37:25,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:25,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 09:37:25,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:25,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 09:37:25,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:26,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-12 09:37:26,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:26,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:26,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:26,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 09:37:26,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:26,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-12 09:37:26,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:26,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 09:37:26,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:26,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 09:37:26,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:26,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-12 09:37:26,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:26,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:26,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:26,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:26,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 09:37:26,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:26,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-12 09:37:26,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:26,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 09:37:26,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:26,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 09:37:26,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:26,650 INFO L134 CoverageAnalysis]: Checked inductivity of 5790 backedges. 1875 proven. 3750 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2020-10-12 09:37:26,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582164012] [2020-10-12 09:37:26,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:37:26,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-12 09:37:26,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989201117] [2020-10-12 09:37:26,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-12 09:37:26,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:37:26,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-12 09:37:26,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-12 09:37:26,652 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 29 states. [2020-10-12 09:37:27,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:37:27,580 INFO L93 Difference]: Finished difference Result 144 states and 154 transitions. [2020-10-12 09:37:27,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-12 09:37:27,580 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 182 [2020-10-12 09:37:27,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:37:27,581 INFO L225 Difference]: With dead ends: 144 [2020-10-12 09:37:27,582 INFO L226 Difference]: Without dead ends: 78 [2020-10-12 09:37:27,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970 [2020-10-12 09:37:27,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-12 09:37:27,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-12 09:37:27,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-12 09:37:27,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-12 09:37:27,592 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 182 [2020-10-12 09:37:27,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:37:27,592 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-12 09:37:27,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-12 09:37:27,593 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-12 09:37:27,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-12 09:37:27,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:37:27,594 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:37:27,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 09:37:27,594 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:37:27,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:37:27,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1730406743, now seen corresponding path program 26 times [2020-10-12 09:37:27,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:37:27,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453875175] [2020-10-12 09:37:27,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:37:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:27,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:27,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:27,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:27,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:32,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:32,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-12 09:37:32,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:37:32,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 09:37:32,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:32,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 09:37:32,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:37:32,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 09:37:32,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:32,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:37:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:32,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:32,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:32,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:37:32,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:32,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:37:32,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:32,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:37:32,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:32,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:37:32,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:32,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:37:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:32,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:32,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:32,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 09:37:32,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:32,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-12 09:37:32,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:32,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 09:37:32,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:32,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 09:37:32,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:33,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 09:37:33,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:33,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:33,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:33,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:33,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 09:37:33,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:33,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-12 09:37:33,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:33,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 09:37:33,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:33,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 09:37:33,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:33,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-12 09:37:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:33,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:33,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:33,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:33,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 09:37:33,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:33,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-12 09:37:33,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:33,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 09:37:33,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:33,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 09:37:33,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:33,573 INFO L134 CoverageAnalysis]: Checked inductivity of 6255 backedges. 2028 proven. 4056 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-10-12 09:37:33,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453875175] [2020-10-12 09:37:33,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:37:33,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-12 09:37:33,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377139600] [2020-10-12 09:37:33,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-12 09:37:33,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:37:33,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-12 09:37:33,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-12 09:37:33,575 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 30 states. [2020-10-12 09:37:34,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:37:34,529 INFO L93 Difference]: Finished difference Result 148 states and 158 transitions. [2020-10-12 09:37:34,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-12 09:37:34,529 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 188 [2020-10-12 09:37:34,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:37:34,531 INFO L225 Difference]: With dead ends: 148 [2020-10-12 09:37:34,531 INFO L226 Difference]: Without dead ends: 80 [2020-10-12 09:37:34,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192 [2020-10-12 09:37:34,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-12 09:37:34,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-12 09:37:34,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-12 09:37:34,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-12 09:37:34,538 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 188 [2020-10-12 09:37:34,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:37:34,538 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-12 09:37:34,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-12 09:37:34,539 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-12 09:37:34,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-12 09:37:34,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:37:34,540 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:37:34,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 09:37:34,540 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:37:34,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:37:34,541 INFO L82 PathProgramCache]: Analyzing trace with hash -198249515, now seen corresponding path program 27 times [2020-10-12 09:37:34,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:37:34,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23901217] [2020-10-12 09:37:34,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:37:34,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:34,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:34,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:34,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:34,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:39,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:39,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-12 09:37:39,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:37:39,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 09:37:39,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:39,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 09:37:39,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:37:39,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 09:37:39,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:39,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:37:39,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:39,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:39,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:39,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:37:39,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:39,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:37:39,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:39,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:37:39,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:39,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:37:39,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:39,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:37:39,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:39,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:39,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:39,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 09:37:39,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:39,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-12 09:37:39,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:39,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 09:37:39,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:39,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 09:37:39,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:40,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-12 09:37:40,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:40,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:40,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:40,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:40,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 09:37:40,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:40,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-12 09:37:40,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:40,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 09:37:40,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:40,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 09:37:40,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:40,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-12 09:37:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:40,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:40,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:40,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:40,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 09:37:40,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:40,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-12 09:37:40,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:40,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 09:37:40,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:40,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 09:37:40,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:40,480 INFO L134 CoverageAnalysis]: Checked inductivity of 6738 backedges. 2187 proven. 4374 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-10-12 09:37:40,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [23901217] [2020-10-12 09:37:40,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:37:40,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-12 09:37:40,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360419735] [2020-10-12 09:37:40,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-12 09:37:40,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:37:40,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-12 09:37:40,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-12 09:37:40,482 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 31 states. [2020-10-12 09:37:41,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:37:41,439 INFO L93 Difference]: Finished difference Result 152 states and 162 transitions. [2020-10-12 09:37:41,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-12 09:37:41,439 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 194 [2020-10-12 09:37:41,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:37:41,440 INFO L225 Difference]: With dead ends: 152 [2020-10-12 09:37:41,440 INFO L226 Difference]: Without dead ends: 82 [2020-10-12 09:37:41,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2020-10-12 09:37:41,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-12 09:37:41,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-12 09:37:41,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-12 09:37:41,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-12 09:37:41,447 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 194 [2020-10-12 09:37:41,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:37:41,447 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-12 09:37:41,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-12 09:37:41,448 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-12 09:37:41,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-12 09:37:41,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:37:41,449 INFO L422 BasicCegarLoop]: trace histogram [84, 84, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:37:41,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 09:37:41,449 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:37:41,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:37:41,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1724061741, now seen corresponding path program 28 times [2020-10-12 09:37:41,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:37:41,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485745652] [2020-10-12 09:37:41,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:37:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:41,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:41,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:41,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:41,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:46,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:46,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-12 09:37:46,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:37:46,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 09:37:46,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:46,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 09:37:46,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-12 09:37:46,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 09:37:46,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:46,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:37:46,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:46,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:46,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:46,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:37:46,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:46,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:37:46,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:46,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:37:46,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:46,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:37:46,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:46,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:37:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:46,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:46,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:46,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:46,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 09:37:46,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:46,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-10-12 09:37:46,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:46,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 09:37:46,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:46,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 09:37:46,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:37:47,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 09:37:47,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:47,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:47,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:47,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 09:37:47,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:47,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-12 09:37:47,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:47,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 09:37:47,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:47,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 09:37:47,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:47,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-12 09:37:47,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:47,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:47,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:47,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:47,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 09:37:47,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:47,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-12 09:37:47,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:47,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 09:37:47,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:47,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 09:37:47,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:47,646 INFO L134 CoverageAnalysis]: Checked inductivity of 7239 backedges. 2352 proven. 4704 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2020-10-12 09:37:47,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485745652] [2020-10-12 09:37:47,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:37:47,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-12 09:37:47,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087002381] [2020-10-12 09:37:47,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-12 09:37:47,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:37:47,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-12 09:37:47,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-12 09:37:47,648 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 32 states. [2020-10-12 09:37:48,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:37:48,737 INFO L93 Difference]: Finished difference Result 156 states and 166 transitions. [2020-10-12 09:37:48,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-12 09:37:48,738 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 200 [2020-10-12 09:37:48,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:37:48,739 INFO L225 Difference]: With dead ends: 156 [2020-10-12 09:37:48,739 INFO L226 Difference]: Without dead ends: 84 [2020-10-12 09:37:48,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1395, Invalid=2265, Unknown=0, NotChecked=0, Total=3660 [2020-10-12 09:37:48,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-12 09:37:48,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-12 09:37:48,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-12 09:37:48,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-12 09:37:48,745 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 200 [2020-10-12 09:37:48,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:37:48,746 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-12 09:37:48,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-12 09:37:48,746 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-12 09:37:48,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-12 09:37:48,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:37:48,747 INFO L422 BasicCegarLoop]: trace histogram [87, 87, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:37:48,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 09:37:48,748 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:37:48,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:37:48,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1040196945, now seen corresponding path program 29 times [2020-10-12 09:37:48,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:37:48,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358850434] [2020-10-12 09:37:48,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:37:48,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:48,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:48,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:48,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:48,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:53,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:53,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-12 09:37:53,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:37:53,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 09:37:53,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:53,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 09:37:53,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:37:53,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 09:37:53,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:53,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:37:53,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:53,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:53,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:53,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:37:53,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:53,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:37:53,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:53,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:37:53,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:53,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:37:53,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:53,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:37:53,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:53,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:53,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:53,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 09:37:53,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:53,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-12 09:37:53,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:53,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 09:37:53,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:53,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 09:37:53,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:54,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-12 09:37:54,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:54,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:54,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:54,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:54,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 09:37:54,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:54,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-12 09:37:54,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:54,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 09:37:54,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:54,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 09:37:54,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:54,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 09:37:54,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:54,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:54,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:54,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:54,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 09:37:54,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:54,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-12 09:37:54,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:54,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 09:37:54,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:54,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 09:37:54,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:54,829 INFO L134 CoverageAnalysis]: Checked inductivity of 7758 backedges. 2523 proven. 5046 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-10-12 09:37:54,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358850434] [2020-10-12 09:37:54,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:37:54,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-12 09:37:54,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797593988] [2020-10-12 09:37:54,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-12 09:37:54,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:37:54,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-12 09:37:54,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 09:37:54,832 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 33 states. [2020-10-12 09:37:55,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:37:55,970 INFO L93 Difference]: Finished difference Result 160 states and 170 transitions. [2020-10-12 09:37:55,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-12 09:37:55,971 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 206 [2020-10-12 09:37:55,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:37:55,972 INFO L225 Difference]: With dead ends: 160 [2020-10-12 09:37:55,972 INFO L226 Difference]: Without dead ends: 86 [2020-10-12 09:37:55,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2020-10-12 09:37:55,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-12 09:37:55,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-12 09:37:55,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-12 09:37:55,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-12 09:37:55,979 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 206 [2020-10-12 09:37:55,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:37:55,980 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-12 09:37:55,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-12 09:37:55,980 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-12 09:37:55,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-12 09:37:55,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:37:55,981 INFO L422 BasicCegarLoop]: trace histogram [90, 90, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:37:55,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 09:37:55,982 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:37:55,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:37:55,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1622995889, now seen corresponding path program 30 times [2020-10-12 09:37:55,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:37:55,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688565729] [2020-10-12 09:37:55,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:37:55,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:55,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:56,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:56,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:56,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:00,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:00,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-12 09:38:00,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:38:00,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 09:38:00,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:00,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 09:38:00,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-12 09:38:00,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 09:38:00,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:01,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:38:01,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:01,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:01,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:01,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:38:01,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:01,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:38:01,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:01,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:38:01,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:38:01,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:38:01,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:01,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:38:01,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:01,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:01,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:01,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:01,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 09:38:01,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:01,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-12 09:38:01,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:01,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 09:38:01,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:01,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 09:38:01,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:01,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-12 09:38:01,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:01,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:01,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:01,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 09:38:01,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:01,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-12 09:38:01,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:01,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 09:38:01,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:01,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 09:38:01,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:01,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-12 09:38:01,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:01,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:02,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:02,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:02,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 09:38:02,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:02,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-12 09:38:02,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:02,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 09:38:02,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:02,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 09:38:02,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:02,117 INFO L134 CoverageAnalysis]: Checked inductivity of 8295 backedges. 2700 proven. 5400 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-12 09:38:02,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688565729] [2020-10-12 09:38:02,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:38:02,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-12 09:38:02,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704245530] [2020-10-12 09:38:02,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-12 09:38:02,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:38:02,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-12 09:38:02,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 09:38:02,119 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 34 states. [2020-10-12 09:38:03,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:38:03,303 INFO L93 Difference]: Finished difference Result 164 states and 174 transitions. [2020-10-12 09:38:03,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-12 09:38:03,304 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 212 [2020-10-12 09:38:03,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:38:03,305 INFO L225 Difference]: With dead ends: 164 [2020-10-12 09:38:03,305 INFO L226 Difference]: Without dead ends: 88 [2020-10-12 09:38:03,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1584, Invalid=2576, Unknown=0, NotChecked=0, Total=4160 [2020-10-12 09:38:03,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-12 09:38:03,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-12 09:38:03,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-12 09:38:03,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-12 09:38:03,312 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 212 [2020-10-12 09:38:03,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:38:03,312 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-12 09:38:03,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-12 09:38:03,312 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-12 09:38:03,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-12 09:38:03,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:38:03,313 INFO L422 BasicCegarLoop]: trace histogram [93, 93, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:38:03,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 09:38:03,313 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:38:03,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:38:03,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1692925133, now seen corresponding path program 31 times [2020-10-12 09:38:03,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:38:03,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367975334] [2020-10-12 09:38:03,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:38:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:03,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:03,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:03,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:03,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:08,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:08,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-12 09:38:08,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:38:08,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 09:38:08,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:08,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 09:38:08,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:38:08,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 09:38:08,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:08,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:38:08,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:08,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:08,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:08,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:38:08,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:08,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:38:08,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:08,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:38:08,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:38:08,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:38:08,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:08,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:38:08,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:08,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:08,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:08,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 09:38:08,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:08,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-12 09:38:08,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:08,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 09:38:08,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:08,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 09:38:08,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:09,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-12 09:38:09,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:09,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:09,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:09,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:09,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 09:38:09,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:09,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-12 09:38:09,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:09,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 09:38:09,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:09,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 09:38:09,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:09,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-12 09:38:09,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:09,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:09,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:09,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:09,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 09:38:09,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:09,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-12 09:38:09,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:09,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 09:38:09,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:09,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 09:38:09,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:09,503 INFO L134 CoverageAnalysis]: Checked inductivity of 8850 backedges. 2883 proven. 5766 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2020-10-12 09:38:09,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367975334] [2020-10-12 09:38:09,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:38:09,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-12 09:38:09,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433485040] [2020-10-12 09:38:09,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-12 09:38:09,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:38:09,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-12 09:38:09,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 09:38:09,506 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 35 states. [2020-10-12 09:38:10,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:38:10,735 INFO L93 Difference]: Finished difference Result 168 states and 178 transitions. [2020-10-12 09:38:10,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-12 09:38:10,735 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 218 [2020-10-12 09:38:10,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:38:10,736 INFO L225 Difference]: With dead ends: 168 [2020-10-12 09:38:10,736 INFO L226 Difference]: Without dead ends: 90 [2020-10-12 09:38:10,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422 [2020-10-12 09:38:10,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-12 09:38:10,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-12 09:38:10,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-12 09:38:10,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-12 09:38:10,747 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 218 [2020-10-12 09:38:10,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:38:10,747 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-12 09:38:10,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-12 09:38:10,748 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-12 09:38:10,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-12 09:38:10,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:38:10,749 INFO L422 BasicCegarLoop]: trace histogram [96, 96, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:38:10,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 09:38:10,749 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:38:10,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:38:10,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1209444661, now seen corresponding path program 32 times [2020-10-12 09:38:10,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:38:10,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015980677] [2020-10-12 09:38:10,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:38:10,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:10,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:10,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:10,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:10,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:15,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:15,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-12 09:38:15,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:38:15,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 09:38:15,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:15,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 09:38:15,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:38:15,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 09:38:15,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:15,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:38:15,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:15,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:15,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:15,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:38:15,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:15,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:38:15,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:15,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:38:15,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:38:15,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:38:15,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:15,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:38:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:15,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:15,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:15,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 09:38:15,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:15,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-12 09:38:15,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:15,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 09:38:15,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:15,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 09:38:15,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:16,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 09:38:16,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:16,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:16,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:16,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:16,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 09:38:16,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:16,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-12 09:38:16,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:16,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 09:38:16,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:16,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 09:38:16,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:16,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-12 09:38:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:16,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:16,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:17,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:17,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 09:38:17,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:17,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-12 09:38:17,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:17,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 09:38:17,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:17,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 09:38:17,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:17,050 INFO L134 CoverageAnalysis]: Checked inductivity of 9423 backedges. 3072 proven. 6144 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2020-10-12 09:38:17,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015980677] [2020-10-12 09:38:17,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:38:17,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-12 09:38:17,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698368120] [2020-10-12 09:38:17,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-12 09:38:17,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:38:17,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-12 09:38:17,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 09:38:17,052 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 36 states. [2020-10-12 09:38:18,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:38:18,245 INFO L93 Difference]: Finished difference Result 172 states and 182 transitions. [2020-10-12 09:38:18,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-12 09:38:18,246 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 224 [2020-10-12 09:38:18,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:38:18,247 INFO L225 Difference]: With dead ends: 172 [2020-10-12 09:38:18,247 INFO L226 Difference]: Without dead ends: 92 [2020-10-12 09:38:18,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1785, Invalid=2907, Unknown=0, NotChecked=0, Total=4692 [2020-10-12 09:38:18,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-12 09:38:18,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-12 09:38:18,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-12 09:38:18,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-12 09:38:18,254 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 224 [2020-10-12 09:38:18,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:38:18,254 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-12 09:38:18,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-12 09:38:18,254 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-12 09:38:18,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-12 09:38:18,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:38:18,256 INFO L422 BasicCegarLoop]: trace histogram [99, 99, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:38:18,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-12 09:38:18,256 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:38:18,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:38:18,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1482259017, now seen corresponding path program 33 times [2020-10-12 09:38:18,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:38:18,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [410484966] [2020-10-12 09:38:18,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:38:18,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:18,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:18,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:18,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:18,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:23,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:23,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-12 09:38:23,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:38:23,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 09:38:23,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:23,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 09:38:23,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-12 09:38:23,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 09:38:23,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:23,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:38:23,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:23,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:23,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:23,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:38:23,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:23,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:38:23,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:23,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:38:23,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:38:23,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:38:23,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:23,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:38:23,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:23,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:23,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:23,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:23,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 09:38:23,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:23,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-12 09:38:23,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:23,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 09:38:23,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:23,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 09:38:23,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:24,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-12 09:38:24,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:24,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:24,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:24,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 09:38:24,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:24,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-12 09:38:24,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:24,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 09:38:24,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:24,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 09:38:24,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:24,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-12 09:38:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:24,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:24,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:24,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:24,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 09:38:24,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:24,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-12 09:38:24,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:24,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 09:38:24,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:24,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 09:38:24,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:24,738 INFO L134 CoverageAnalysis]: Checked inductivity of 10014 backedges. 3267 proven. 6534 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2020-10-12 09:38:24,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [410484966] [2020-10-12 09:38:24,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:38:24,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-12 09:38:24,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649099242] [2020-10-12 09:38:24,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-12 09:38:24,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:38:24,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-12 09:38:24,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 09:38:24,740 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 37 states. [2020-10-12 09:38:25,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:38:25,980 INFO L93 Difference]: Finished difference Result 176 states and 186 transitions. [2020-10-12 09:38:25,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-12 09:38:25,981 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 230 [2020-10-12 09:38:25,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:38:25,982 INFO L225 Difference]: With dead ends: 176 [2020-10-12 09:38:25,982 INFO L226 Difference]: Without dead ends: 94 [2020-10-12 09:38:25,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1890, Invalid=3080, Unknown=0, NotChecked=0, Total=4970 [2020-10-12 09:38:25,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-12 09:38:25,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-12 09:38:25,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-12 09:38:25,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2020-10-12 09:38:25,989 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 230 [2020-10-12 09:38:25,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:38:25,989 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2020-10-12 09:38:25,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-12 09:38:25,989 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2020-10-12 09:38:25,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-12 09:38:25,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:38:25,991 INFO L422 BasicCegarLoop]: trace histogram [102, 102, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:38:25,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-12 09:38:25,991 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:38:25,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:38:25,991 INFO L82 PathProgramCache]: Analyzing trace with hash 862111559, now seen corresponding path program 34 times [2020-10-12 09:38:25,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:38:25,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033334615] [2020-10-12 09:38:25,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:38:25,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:26,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:26,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:26,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:26,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:31,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:31,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-12 09:38:31,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:38:31,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 09:38:31,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:31,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-12 09:38:31,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:38:31,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 09:38:31,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:31,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:38:31,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:31,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:31,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:31,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:38:31,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:31,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:38:31,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:31,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:38:31,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:38:31,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:38:31,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:31,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:38:31,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:31,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:31,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:31,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 09:38:31,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:31,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-12 09:38:31,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:31,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-12 09:38:31,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:31,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 09:38:31,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:32,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-12 09:38:32,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:32,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:32,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:32,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:32,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 09:38:32,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:32,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-12 09:38:32,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:32,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-12 09:38:32,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:32,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 09:38:32,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:32,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-12 09:38:32,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:32,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:32,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:32,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:32,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 09:38:32,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:32,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-12 09:38:32,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:32,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-12 09:38:32,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:32,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 09:38:32,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:32,425 INFO L134 CoverageAnalysis]: Checked inductivity of 10623 backedges. 3468 proven. 6936 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2020-10-12 09:38:32,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2033334615] [2020-10-12 09:38:32,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:38:32,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-12 09:38:32,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543026886] [2020-10-12 09:38:32,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-12 09:38:32,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:38:32,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-12 09:38:32,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-12 09:38:32,427 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 38 states. [2020-10-12 09:38:33,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:38:33,850 INFO L93 Difference]: Finished difference Result 180 states and 190 transitions. [2020-10-12 09:38:33,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-12 09:38:33,851 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 236 [2020-10-12 09:38:33,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:38:33,852 INFO L225 Difference]: With dead ends: 180 [2020-10-12 09:38:33,852 INFO L226 Difference]: Without dead ends: 96 [2020-10-12 09:38:33,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1998, Invalid=3258, Unknown=0, NotChecked=0, Total=5256 [2020-10-12 09:38:33,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-12 09:38:33,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-12 09:38:33,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-12 09:38:33,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2020-10-12 09:38:33,859 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 236 [2020-10-12 09:38:33,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:38:33,860 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2020-10-12 09:38:33,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-12 09:38:33,860 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2020-10-12 09:38:33,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-12 09:38:33,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:38:33,862 INFO L422 BasicCegarLoop]: trace histogram [105, 105, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:38:33,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-12 09:38:33,862 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:38:33,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:38:33,862 INFO L82 PathProgramCache]: Analyzing trace with hash 2034736581, now seen corresponding path program 35 times [2020-10-12 09:38:33,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:38:33,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792531374] [2020-10-12 09:38:33,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:38:33,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:33,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:33,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:33,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:33,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:38,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:38,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-12 09:38:38,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:38:38,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 09:38:38,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:38,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-12 09:38:38,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:38:38,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 09:38:38,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:38,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:38:38,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:38,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:38,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:38,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:38:38,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:38,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:38:38,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:38,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:38:38,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:38:38,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:38:38,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:38,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:38:38,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:38,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:39,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:39,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 09:38:39,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:39,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-12 09:38:39,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:39,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-12 09:38:39,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:39,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 09:38:39,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:39,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-12 09:38:39,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:39,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:39,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:40,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:40,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 09:38:40,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:40,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-12 09:38:40,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:40,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-12 09:38:40,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:40,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 09:38:40,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:40,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-12 09:38:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:40,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:40,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:40,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:40,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 09:38:40,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:40,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-12 09:38:40,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:40,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-12 09:38:40,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:40,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 09:38:40,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:40,379 INFO L134 CoverageAnalysis]: Checked inductivity of 11250 backedges. 3675 proven. 7350 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2020-10-12 09:38:40,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792531374] [2020-10-12 09:38:40,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:38:40,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-12 09:38:40,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494013053] [2020-10-12 09:38:40,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-12 09:38:40,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:38:40,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-12 09:38:40,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 09:38:40,381 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 39 states. [2020-10-12 09:38:41,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:38:41,773 INFO L93 Difference]: Finished difference Result 184 states and 194 transitions. [2020-10-12 09:38:41,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-12 09:38:41,774 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 242 [2020-10-12 09:38:41,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:38:41,775 INFO L225 Difference]: With dead ends: 184 [2020-10-12 09:38:41,775 INFO L226 Difference]: Without dead ends: 98 [2020-10-12 09:38:41,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2109, Invalid=3441, Unknown=0, NotChecked=0, Total=5550 [2020-10-12 09:38:41,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-12 09:38:41,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-12 09:38:41,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-12 09:38:41,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-10-12 09:38:41,782 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 242 [2020-10-12 09:38:41,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:38:41,782 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-10-12 09:38:41,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-12 09:38:41,782 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-10-12 09:38:41,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-12 09:38:41,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:38:41,784 INFO L422 BasicCegarLoop]: trace histogram [108, 108, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:38:41,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-12 09:38:41,784 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:38:41,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:38:41,785 INFO L82 PathProgramCache]: Analyzing trace with hash 862084547, now seen corresponding path program 36 times [2020-10-12 09:38:41,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:38:41,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533536304] [2020-10-12 09:38:41,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:38:41,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:41,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:41,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:41,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:41,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:46,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:46,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-12 09:38:46,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:38:46,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 09:38:46,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:46,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-12 09:38:46,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:38:46,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 09:38:46,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:46,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:38:46,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:46,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:46,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:46,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:38:46,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:46,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:38:46,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:46,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:38:46,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:38:46,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:38:46,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:46,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:38:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:46,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:47,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:47,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 09:38:47,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:47,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-12 09:38:47,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:47,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-12 09:38:47,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:47,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 09:38:47,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:47,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-12 09:38:47,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:47,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:47,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:48,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:48,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 09:38:48,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:48,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-12 09:38:48,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:48,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-12 09:38:48,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:48,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 09:38:48,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:48,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-12 09:38:48,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:48,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:48,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:48,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:48,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 09:38:48,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:48,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-12 09:38:48,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:48,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-12 09:38:48,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:48,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 09:38:48,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:48,399 INFO L134 CoverageAnalysis]: Checked inductivity of 11895 backedges. 3888 proven. 7776 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-12 09:38:48,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533536304] [2020-10-12 09:38:48,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:38:48,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-12 09:38:48,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517360700] [2020-10-12 09:38:48,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-12 09:38:48,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:38:48,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-12 09:38:48,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-12 09:38:48,402 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 40 states. [2020-10-12 09:38:49,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:38:49,992 INFO L93 Difference]: Finished difference Result 188 states and 198 transitions. [2020-10-12 09:38:49,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-12 09:38:49,993 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 248 [2020-10-12 09:38:49,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:38:49,994 INFO L225 Difference]: With dead ends: 188 [2020-10-12 09:38:49,994 INFO L226 Difference]: Without dead ends: 100 [2020-10-12 09:38:49,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2223, Invalid=3629, Unknown=0, NotChecked=0, Total=5852 [2020-10-12 09:38:49,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-12 09:38:50,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-12 09:38:50,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-12 09:38:50,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2020-10-12 09:38:50,007 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 248 [2020-10-12 09:38:50,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:38:50,008 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2020-10-12 09:38:50,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-12 09:38:50,008 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2020-10-12 09:38:50,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-12 09:38:50,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:38:50,011 INFO L422 BasicCegarLoop]: trace histogram [111, 111, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:38:50,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-12 09:38:50,011 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:38:50,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:38:50,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1512400705, now seen corresponding path program 37 times [2020-10-12 09:38:50,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:38:50,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100378492] [2020-10-12 09:38:50,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:38:50,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:50,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:50,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:50,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:50,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:55,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:55,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-12 09:38:55,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:38:55,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 09:38:55,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:55,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-12 09:38:55,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-12 09:38:55,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 09:38:55,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:55,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:38:55,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:55,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:55,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:55,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:38:55,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:55,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:38:55,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:55,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:38:55,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:38:55,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:38:55,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:55,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:38:55,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:55,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:55,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:55,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:55,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 09:38:55,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:55,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-12 09:38:55,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:55,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-12 09:38:55,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:55,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 09:38:55,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:56,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-12 09:38:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:56,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:56,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:56,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 09:38:56,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:56,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-12 09:38:56,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:56,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-12 09:38:56,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:56,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 09:38:56,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:56,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-12 09:38:56,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:56,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:56,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:56,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:56,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 09:38:56,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:56,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-12 09:38:56,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:56,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-12 09:38:56,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:56,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 09:38:56,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:56,687 INFO L134 CoverageAnalysis]: Checked inductivity of 12558 backedges. 4107 proven. 8214 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2020-10-12 09:38:56,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100378492] [2020-10-12 09:38:56,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:38:56,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-12 09:38:56,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119266411] [2020-10-12 09:38:56,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-12 09:38:56,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:38:56,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-12 09:38:56,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 09:38:56,689 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand 41 states. [2020-10-12 09:38:58,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:38:58,255 INFO L93 Difference]: Finished difference Result 192 states and 202 transitions. [2020-10-12 09:38:58,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-12 09:38:58,255 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 254 [2020-10-12 09:38:58,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:38:58,257 INFO L225 Difference]: With dead ends: 192 [2020-10-12 09:38:58,257 INFO L226 Difference]: Without dead ends: 102 [2020-10-12 09:38:58,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2340, Invalid=3822, Unknown=0, NotChecked=0, Total=6162 [2020-10-12 09:38:58,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-12 09:38:58,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-12 09:38:58,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-12 09:38:58,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2020-10-12 09:38:58,263 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 254 [2020-10-12 09:38:58,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:38:58,264 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2020-10-12 09:38:58,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-12 09:38:58,264 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2020-10-12 09:38:58,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-12 09:38:58,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:38:58,265 INFO L422 BasicCegarLoop]: trace histogram [114, 114, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:38:58,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-12 09:38:58,266 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:38:58,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:38:58,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1796938303, now seen corresponding path program 38 times [2020-10-12 09:38:58,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:38:58,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139261403] [2020-10-12 09:38:58,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:38:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:58,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:58,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:58,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:58,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking...