/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-examples/standard_two_index_02.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 10:03:44,246 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 10:03:44,249 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 10:03:44,291 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 10:03:44,292 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 10:03:44,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 10:03:44,303 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 10:03:44,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 10:03:44,310 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 10:03:44,313 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 10:03:44,313 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 10:03:44,314 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 10:03:44,315 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 10:03:44,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 10:03:44,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 10:03:44,322 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 10:03:44,323 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 10:03:44,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 10:03:44,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 10:03:44,335 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 10:03:44,337 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 10:03:44,338 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 10:03:44,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 10:03:44,340 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 10:03:44,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 10:03:44,352 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 10:03:44,352 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 10:03:44,353 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 10:03:44,360 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 10:03:44,361 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 10:03:44,361 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 10:03:44,365 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 10:03:44,366 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 10:03:44,367 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 10:03:44,368 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 10:03:44,368 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 10:03:44,368 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 10:03:44,369 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 10:03:44,369 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 10:03:44,371 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 10:03:44,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 10:03:44,372 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 10:03:44,403 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 10:03:44,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 10:03:44,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 10:03:44,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 10:03:44,405 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 10:03:44,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 10:03:44,406 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 10:03:44,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 10:03:44,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 10:03:44,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 10:03:44,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 10:03:44,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 10:03:44,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 10:03:44,407 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 10:03:44,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 10:03:44,407 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 10:03:44,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 10:03:44,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 10:03:44,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 10:03:44,408 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 10:03:44,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 10:03:44,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 10:03:44,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 10:03:44,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 10:03:44,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 10:03:44,409 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 10:03:44,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 10:03:44,410 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 10:03:44,410 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 10:03:44,410 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 10:03:44,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 10:03:44,727 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 10:03:44,732 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 10:03:44,735 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 10:03:44,736 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 10:03:44,737 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_two_index_02.i [2020-10-12 10:03:44,811 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/832e9be11/ca6688c844b445cc88bc956f0e9a5582/FLAG5ea3f44f4 [2020-10-12 10:03:45,269 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 10:03:45,270 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_two_index_02.i [2020-10-12 10:03:45,276 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/832e9be11/ca6688c844b445cc88bc956f0e9a5582/FLAG5ea3f44f4 [2020-10-12 10:03:45,637 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/832e9be11/ca6688c844b445cc88bc956f0e9a5582 [2020-10-12 10:03:45,648 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 10:03:45,649 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 10:03:45,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 10:03:45,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 10:03:45,655 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 10:03:45,657 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:03:45" (1/1) ... [2020-10-12 10:03:45,659 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5783693b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:03:45, skipping insertion in model container [2020-10-12 10:03:45,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:03:45" (1/1) ... [2020-10-12 10:03:45,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 10:03:45,689 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 10:03:45,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:03:45,882 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 10:03:45,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:03:45,934 INFO L208 MainTranslator]: Completed translation [2020-10-12 10:03:45,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:03:45 WrapperNode [2020-10-12 10:03:45,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 10:03:45,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 10:03:45,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 10:03:45,936 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 10:03:46,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:03:45" (1/1) ... [2020-10-12 10:03:46,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:03:45" (1/1) ... [2020-10-12 10:03:46,057 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:03:45" (1/1) ... [2020-10-12 10:03:46,057 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:03:45" (1/1) ... [2020-10-12 10:03:46,079 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:03:45" (1/1) ... [2020-10-12 10:03:46,086 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:03:45" (1/1) ... [2020-10-12 10:03:46,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:03:45" (1/1) ... [2020-10-12 10:03:46,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 10:03:46,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 10:03:46,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 10:03:46,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 10:03:46,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:03:45" (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 10:03:46,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 10:03:46,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 10:03:46,171 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 10:03:46,171 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 10:03:46,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 10:03:46,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 10:03:46,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 10:03:46,172 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 10:03:46,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 10:03:46,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 10:03:46,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 10:03:46,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 10:03:46,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 10:03:46,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 10:03:46,439 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 10:03:46,440 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-12 10:03:46,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:03:46 BoogieIcfgContainer [2020-10-12 10:03:46,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 10:03:46,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 10:03:46,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 10:03:46,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 10:03:46,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 10:03:45" (1/3) ... [2020-10-12 10:03:46,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3598fdcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:03:46, skipping insertion in model container [2020-10-12 10:03:46,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:03:45" (2/3) ... [2020-10-12 10:03:46,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3598fdcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:03:46, skipping insertion in model container [2020-10-12 10:03:46,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:03:46" (3/3) ... [2020-10-12 10:03:46,464 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_two_index_02.i [2020-10-12 10:03:46,475 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 10:03:46,482 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 10:03:46,499 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 10:03:46,520 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 10:03:46,520 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 10:03:46,520 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 10:03:46,520 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 10:03:46,520 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 10:03:46,521 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 10:03:46,521 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 10:03:46,521 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 10:03:46,538 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-10-12 10:03:46,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-12 10:03:46,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:46,544 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:46,545 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:46,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:46,552 INFO L82 PathProgramCache]: Analyzing trace with hash -2029643862, now seen corresponding path program 1 times [2020-10-12 10:03:46,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:46,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717053601] [2020-10-12 10:03:46,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:46,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:46,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:46,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:46,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:46,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-12 10:03:46,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:03:46,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-12 10:03:46,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:46,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:03:46,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 10:03:46,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 10:03:46,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-12 10:03:47,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:03:47,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:47,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:47,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:47,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:03:47,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:47,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 10:03:47,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:47,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:47,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:47,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:47,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:47,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:03:47,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717053601] [2020-10-12 10:03:47,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:03:47,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 10:03:47,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139611185] [2020-10-12 10:03:47,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 10:03:47,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:03:47,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 10:03:47,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 10:03:47,072 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2020-10-12 10:03:47,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:03:47,201 INFO L93 Difference]: Finished difference Result 46 states and 65 transitions. [2020-10-12 10:03:47,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 10:03:47,204 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-12 10:03:47,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:03:47,214 INFO L225 Difference]: With dead ends: 46 [2020-10-12 10:03:47,214 INFO L226 Difference]: Without dead ends: 24 [2020-10-12 10:03:47,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 10:03:47,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-12 10:03:47,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2020-10-12 10:03:47,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-12 10:03:47,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-10-12 10:03:47,262 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 15 [2020-10-12 10:03:47,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:03:47,263 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-10-12 10:03:47,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 10:03:47,263 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-10-12 10:03:47,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-12 10:03:47,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:47,265 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:47,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 10:03:47,265 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:47,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:47,266 INFO L82 PathProgramCache]: Analyzing trace with hash -59429947, now seen corresponding path program 1 times [2020-10-12 10:03:47,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:47,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464561650] [2020-10-12 10:03:47,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:47,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:47,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:47,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:47,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:47,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:47,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 10:03:47,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:03:47,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 556 [2020-10-12 10:03:47,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:47,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:03:47,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:03:47,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 10:03:47,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:48,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:03:48,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:48,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:48,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:48,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:03:48,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:48,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:03:48,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:48,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:48,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:48,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:48,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:48,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 10:03:48,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464561650] [2020-10-12 10:03:48,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:03:48,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 10:03:48,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248247468] [2020-10-12 10:03:48,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 10:03:48,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:03:48,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 10:03:48,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-12 10:03:48,056 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 10 states. [2020-10-12 10:03:48,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:03:48,253 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2020-10-12 10:03:48,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 10:03:48,254 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-10-12 10:03:48,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:03:48,255 INFO L225 Difference]: With dead ends: 35 [2020-10-12 10:03:48,255 INFO L226 Difference]: Without dead ends: 33 [2020-10-12 10:03:48,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-10-12 10:03:48,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-12 10:03:48,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2020-10-12 10:03:48,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-12 10:03:48,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-10-12 10:03:48,266 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 17 [2020-10-12 10:03:48,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:03:48,266 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-10-12 10:03:48,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 10:03:48,267 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-10-12 10:03:48,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-12 10:03:48,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:48,268 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:48,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 10:03:48,268 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:48,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:48,269 INFO L82 PathProgramCache]: Analyzing trace with hash 334778154, now seen corresponding path program 2 times [2020-10-12 10:03:48,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:48,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633299000] [2020-10-12 10:03:48,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:48,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:48,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:48,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:48,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:48,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:48,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 10:03:48,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:03:48,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 402 [2020-10-12 10:03:48,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:48,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 10:03:48,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:03:48,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 10:03:48,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:48,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:03:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:48,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:48,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:48,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:03:48,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:48,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:03:48,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:48,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:48,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:48,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:48,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:48,900 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 10:03:48,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633299000] [2020-10-12 10:03:48,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:03:48,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 10:03:48,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643032767] [2020-10-12 10:03:48,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 10:03:48,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:03:48,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 10:03:48,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-12 10:03:48,903 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 11 states. [2020-10-12 10:03:49,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:03:49,246 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2020-10-12 10:03:49,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 10:03:49,246 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2020-10-12 10:03:49,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:03:49,248 INFO L225 Difference]: With dead ends: 47 [2020-10-12 10:03:49,248 INFO L226 Difference]: Without dead ends: 45 [2020-10-12 10:03:49,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2020-10-12 10:03:49,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-12 10:03:49,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 30. [2020-10-12 10:03:49,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-12 10:03:49,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-12 10:03:49,257 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 18 [2020-10-12 10:03:49,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:03:49,258 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-12 10:03:49,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 10:03:49,258 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-12 10:03:49,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-12 10:03:49,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:49,259 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:49,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 10:03:49,260 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:49,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:49,260 INFO L82 PathProgramCache]: Analyzing trace with hash -329672603, now seen corresponding path program 3 times [2020-10-12 10:03:49,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:49,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352726939] [2020-10-12 10:03:49,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:49,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:49,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:49,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:49,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:49,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:49,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 10:03:49,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:03:49,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 415 [2020-10-12 10:03:49,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:49,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 10:03:49,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:03:49,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 10:03:49,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:49,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:03:49,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:49,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:49,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:49,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:03:49,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:49,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:03:49,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:49,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:49,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:49,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:49,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:49,851 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 10:03:49,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352726939] [2020-10-12 10:03:49,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:03:49,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 10:03:49,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903352733] [2020-10-12 10:03:49,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 10:03:49,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:03:49,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 10:03:49,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-12 10:03:49,854 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 12 states. [2020-10-12 10:03:50,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:03:50,154 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2020-10-12 10:03:50,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 10:03:50,155 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-10-12 10:03:50,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:03:50,158 INFO L225 Difference]: With dead ends: 39 [2020-10-12 10:03:50,158 INFO L226 Difference]: Without dead ends: 37 [2020-10-12 10:03:50,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-10-12 10:03:50,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-12 10:03:50,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 27. [2020-10-12 10:03:50,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-12 10:03:50,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-10-12 10:03:50,166 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 19 [2020-10-12 10:03:50,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:03:50,167 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-10-12 10:03:50,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 10:03:50,167 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-10-12 10:03:50,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-12 10:03:50,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:50,168 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:50,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 10:03:50,169 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:50,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:50,170 INFO L82 PathProgramCache]: Analyzing trace with hash 956525676, now seen corresponding path program 1 times [2020-10-12 10:03:50,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:50,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283570541] [2020-10-12 10:03:50,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:50,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:50,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:50,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:50,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:50,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 10:03:50,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:03:50,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-12 10:03:50,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:50,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 10:03:50,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 10:03:50,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 10:03:50,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:50,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:03:50,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:50,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:50,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:50,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:03:50,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:50,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:50,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:50,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:50,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:50,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:50,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:50,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-12 10:03:50,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:50,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:50,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:50,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:50,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:50,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:03:50,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:50,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:50,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:03:50,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:50,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:50,451 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 10:03:50,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283570541] [2020-10-12 10:03:50,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:03:50,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 10:03:50,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260570352] [2020-10-12 10:03:50,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 10:03:50,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:03:50,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 10:03:50,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 10:03:50,454 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 5 states. [2020-10-12 10:03:50,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:03:50,548 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2020-10-12 10:03:50,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 10:03:50,549 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-12 10:03:50,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:03:50,551 INFO L225 Difference]: With dead ends: 52 [2020-10-12 10:03:50,551 INFO L226 Difference]: Without dead ends: 33 [2020-10-12 10:03:50,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 10:03:50,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-12 10:03:50,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2020-10-12 10:03:50,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-12 10:03:50,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-10-12 10:03:50,559 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 24 [2020-10-12 10:03:50,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:03:50,560 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-10-12 10:03:50,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 10:03:50,560 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-10-12 10:03:50,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-12 10:03:50,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:50,561 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:50,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 10:03:50,562 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:50,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:50,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1983526027, now seen corresponding path program 2 times [2020-10-12 10:03:50,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:50,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1075646802] [2020-10-12 10:03:50,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:50,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:50,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:50,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:50,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:51,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:51,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 10:03:51,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:03:51,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 540 [2020-10-12 10:03:51,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:51,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 10:03:51,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:03:51,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 10:03:51,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:51,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:03:51,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:51,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:51,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:51,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:03:51,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:51,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:03:51,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:51,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:51,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:51,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:51,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:51,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-12 10:03:51,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:51,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:51,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:51,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:51,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:51,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:03:51,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:51,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:03:51,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:51,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:03:51,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:51,312 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 10:03:51,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1075646802] [2020-10-12 10:03:51,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:03:51,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 10:03:51,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83434989] [2020-10-12 10:03:51,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 10:03:51,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:03:51,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 10:03:51,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-12 10:03:51,315 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 12 states. [2020-10-12 10:03:51,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:03:51,576 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2020-10-12 10:03:51,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 10:03:51,577 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2020-10-12 10:03:51,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:03:51,578 INFO L225 Difference]: With dead ends: 46 [2020-10-12 10:03:51,578 INFO L226 Difference]: Without dead ends: 44 [2020-10-12 10:03:51,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-10-12 10:03:51,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-12 10:03:51,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-10-12 10:03:51,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-12 10:03:51,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-10-12 10:03:51,588 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 26 [2020-10-12 10:03:51,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:03:51,588 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-10-12 10:03:51,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 10:03:51,589 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-10-12 10:03:51,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-12 10:03:51,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:51,591 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:51,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 10:03:51,591 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:51,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:51,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1287661272, now seen corresponding path program 3 times [2020-10-12 10:03:51,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:51,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576762834] [2020-10-12 10:03:51,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:51,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:51,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:51,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:51,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:52,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:52,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 10:03:52,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:03:52,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 751 [2020-10-12 10:03:52,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:52,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 10:03:52,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:03:52,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 10:03:52,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:52,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:03:52,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:52,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:52,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:52,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:03:52,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:52,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:03:52,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:52,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:52,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:52,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:52,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:52,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-12 10:03:52,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:52,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:52,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:52,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:52,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:52,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 10:03:52,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:52,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:03:52,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:52,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:03:52,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:52,617 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 10:03:52,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [576762834] [2020-10-12 10:03:52,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:03:52,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 10:03:52,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013042434] [2020-10-12 10:03:52,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 10:03:52,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:03:52,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 10:03:52,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-12 10:03:52,621 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 13 states. [2020-10-12 10:03:53,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:03:53,109 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2020-10-12 10:03:53,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 10:03:53,110 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-10-12 10:03:53,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:03:53,111 INFO L225 Difference]: With dead ends: 60 [2020-10-12 10:03:53,112 INFO L226 Difference]: Without dead ends: 58 [2020-10-12 10:03:53,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2020-10-12 10:03:53,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-12 10:03:53,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 41. [2020-10-12 10:03:53,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-12 10:03:53,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2020-10-12 10:03:53,123 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 27 [2020-10-12 10:03:53,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:03:53,124 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2020-10-12 10:03:53,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 10:03:53,124 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2020-10-12 10:03:53,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-12 10:03:53,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:53,125 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:53,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 10:03:53,125 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:53,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:53,126 INFO L82 PathProgramCache]: Analyzing trace with hash 384747563, now seen corresponding path program 4 times [2020-10-12 10:03:53,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:53,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178608184] [2020-10-12 10:03:53,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:53,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:53,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:53,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:53,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:54,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:54,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 10:03:54,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:03:54,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 928 [2020-10-12 10:03:54,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:54,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 10:03:54,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:03:54,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 10:03:54,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:54,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:03:54,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:54,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:54,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:54,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:03:54,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:54,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:03:54,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:54,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:54,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:54,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:54,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:54,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-12 10:03:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:54,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:54,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:54,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:54,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:54,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:03:54,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:54,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:03:54,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:54,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:03:54,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:54,420 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 10:03:54,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178608184] [2020-10-12 10:03:54,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:03:54,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 10:03:54,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647749969] [2020-10-12 10:03:54,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 10:03:54,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:03:54,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 10:03:54,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-12 10:03:54,424 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 14 states. [2020-10-12 10:03:54,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:03:54,882 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2020-10-12 10:03:54,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 10:03:54,885 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 28 [2020-10-12 10:03:54,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:03:54,887 INFO L225 Difference]: With dead ends: 59 [2020-10-12 10:03:54,887 INFO L226 Difference]: Without dead ends: 57 [2020-10-12 10:03:54,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2020-10-12 10:03:54,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-12 10:03:54,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 42. [2020-10-12 10:03:54,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-12 10:03:54,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2020-10-12 10:03:54,912 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 28 [2020-10-12 10:03:54,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:03:54,913 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-10-12 10:03:54,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 10:03:54,913 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2020-10-12 10:03:54,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-12 10:03:54,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:54,920 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:54,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 10:03:54,921 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:54,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:54,924 INFO L82 PathProgramCache]: Analyzing trace with hash 689813896, now seen corresponding path program 5 times [2020-10-12 10:03:54,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:54,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884479059] [2020-10-12 10:03:54,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:54,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:54,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:54,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:55,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:55,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:55,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 10:03:55,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:03:55,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 958 [2020-10-12 10:03:55,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:55,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 10:03:55,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:03:55,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 10:03:55,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:56,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:03:56,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:56,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:56,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:56,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:03:56,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:56,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:03:56,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:56,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:56,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:56,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:56,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:56,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 10:03:56,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:56,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:56,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:56,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:56,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:56,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 10:03:56,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:56,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:03:56,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:56,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:03:56,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:56,208 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 10:03:56,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884479059] [2020-10-12 10:03:56,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:03:56,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 10:03:56,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776881410] [2020-10-12 10:03:56,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 10:03:56,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:03:56,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 10:03:56,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-12 10:03:56,216 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 15 states. [2020-10-12 10:03:56,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:03:56,624 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2020-10-12 10:03:56,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 10:03:56,625 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 29 [2020-10-12 10:03:56,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:03:56,626 INFO L225 Difference]: With dead ends: 61 [2020-10-12 10:03:56,626 INFO L226 Difference]: Without dead ends: 59 [2020-10-12 10:03:56,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2020-10-12 10:03:56,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-12 10:03:56,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 43. [2020-10-12 10:03:56,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-12 10:03:56,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2020-10-12 10:03:56,639 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 29 [2020-10-12 10:03:56,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:03:56,640 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2020-10-12 10:03:56,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 10:03:56,640 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2020-10-12 10:03:56,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-12 10:03:56,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:56,642 INFO L422 BasicCegarLoop]: trace histogram [6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:56,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 10:03:56,643 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:56,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:56,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1556935627, now seen corresponding path program 6 times [2020-10-12 10:03:56,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:56,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002425798] [2020-10-12 10:03:56,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:56,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:56,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:56,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:57,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:57,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:57,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 10:03:57,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:03:57,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1212 [2020-10-12 10:03:57,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:57,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 10:03:57,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:03:57,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 10:03:57,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 10:03:58,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:03:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:58,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:58,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:58,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:03:58,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:58,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:03:58,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:58,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:58,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:58,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:58,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:58,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 10:03:58,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:58,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:58,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:58,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:58,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:58,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:03:58,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:58,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:03:58,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:58,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:03:58,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:58,230 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 10:03:58,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2002425798] [2020-10-12 10:03:58,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:03:58,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 10:03:58,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053382937] [2020-10-12 10:03:58,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 10:03:58,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:03:58,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 10:03:58,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-10-12 10:03:58,232 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 16 states. [2020-10-12 10:03:58,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:03:58,580 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2020-10-12 10:03:58,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 10:03:58,581 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 30 [2020-10-12 10:03:58,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:03:58,582 INFO L225 Difference]: With dead ends: 55 [2020-10-12 10:03:58,582 INFO L226 Difference]: Without dead ends: 53 [2020-10-12 10:03:58,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2020-10-12 10:03:58,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-12 10:03:58,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 36. [2020-10-12 10:03:58,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-12 10:03:58,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-10-12 10:03:58,599 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 30 [2020-10-12 10:03:58,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:03:58,599 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-10-12 10:03:58,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 10:03:58,599 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-10-12 10:03:58,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-12 10:03:58,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:58,603 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:58,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 10:03:58,603 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:58,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:58,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1993467674, now seen corresponding path program 7 times [2020-10-12 10:03:58,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:58,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838210506] [2020-10-12 10:03:58,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:58,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:58,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:58,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:58,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:58,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-12 10:03:58,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:03:58,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-12 10:03:58,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:58,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:03:58,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:03:58,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 10:03:58,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:58,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:03:58,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:58,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:58,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:58,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:03:58,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:58,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:03:58,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:58,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:58,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:58,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:58,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:58,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-12 10:03:58,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:58,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:58,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:58,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:58,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:58,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:58,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:58,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:58,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:03:58,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:58,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:58,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 10:03:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:58,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:58,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:58,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:58,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:58,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:58,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:58,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:58,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:03:58,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:58,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:58,952 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-12 10:03:58,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [838210506] [2020-10-12 10:03:58,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:03:58,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 10:03:58,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618117600] [2020-10-12 10:03:58,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 10:03:58,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:03:58,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 10:03:58,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 10:03:58,958 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 6 states. [2020-10-12 10:03:59,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:03:59,033 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2020-10-12 10:03:59,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 10:03:59,034 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-10-12 10:03:59,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:03:59,035 INFO L225 Difference]: With dead ends: 64 [2020-10-12 10:03:59,035 INFO L226 Difference]: Without dead ends: 37 [2020-10-12 10:03:59,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 10:03:59,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-12 10:03:59,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-12 10:03:59,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-12 10:03:59,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-10-12 10:03:59,051 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 33 [2020-10-12 10:03:59,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:03:59,051 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-10-12 10:03:59,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 10:03:59,052 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-10-12 10:03:59,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-12 10:03:59,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:59,053 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:59,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 10:03:59,054 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:59,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:59,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1864152054, now seen corresponding path program 8 times [2020-10-12 10:03:59,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:59,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578966970] [2020-10-12 10:03:59,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:59,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:59,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:59,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:59,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:59,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 10:03:59,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:03:59,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-10-12 10:03:59,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:59,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:03:59,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:03:59,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 10:03:59,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:59,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:03:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:59,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:59,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:59,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:03:59,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:59,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:59,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:59,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:59,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:03:59,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:59,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:59,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-12 10:03:59,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:59,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:59,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:59,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:59,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:59,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:59,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:59,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:59,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:03:59,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:59,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:03:59,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 10:03:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:59,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:59,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:03:59,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:03:59,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:03:59,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:03:59,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:03:59,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:03:59,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:03:59,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:03:59,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:03:59,473 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-12 10:03:59,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578966970] [2020-10-12 10:03:59,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:03:59,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 10:03:59,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843216547] [2020-10-12 10:03:59,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 10:03:59,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:03:59,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 10:03:59,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 10:03:59,476 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 7 states. [2020-10-12 10:03:59,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:03:59,566 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2020-10-12 10:03:59,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 10:03:59,568 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-10-12 10:03:59,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:03:59,569 INFO L225 Difference]: With dead ends: 66 [2020-10-12 10:03:59,569 INFO L226 Difference]: Without dead ends: 39 [2020-10-12 10:03:59,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 10:03:59,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-12 10:03:59,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2020-10-12 10:03:59,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-12 10:03:59,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2020-10-12 10:03:59,582 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 34 [2020-10-12 10:03:59,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:03:59,583 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2020-10-12 10:03:59,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 10:03:59,583 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2020-10-12 10:03:59,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-12 10:03:59,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:03:59,584 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:03:59,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 10:03:59,585 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:03:59,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:03:59,586 INFO L82 PathProgramCache]: Analyzing trace with hash 2144632166, now seen corresponding path program 9 times [2020-10-12 10:03:59,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:03:59,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112526383] [2020-10-12 10:03:59,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:03:59,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:03:59,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:03:59,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:00,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:00,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-12 10:04:00,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:04:00,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 452 [2020-10-12 10:04:00,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:00,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 10:04:00,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:04:00,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:00,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:00,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:04:00,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:00,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:00,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:00,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:04:00,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:00,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:04:00,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:00,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:00,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:00,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:00,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:00,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-12 10:04:00,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:00,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:00,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:00,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:00,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:00,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:04:00,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:00,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:00,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:00,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:00,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:00,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-12 10:04:00,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:00,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:00,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:00,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:00,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:00,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:00,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:00,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:00,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:00,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:00,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:00,117 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-12 10:04:00,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112526383] [2020-10-12 10:04:00,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:04:00,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 10:04:00,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499159129] [2020-10-12 10:04:00,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 10:04:00,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:04:00,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 10:04:00,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 10:04:00,119 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 8 states. [2020-10-12 10:04:00,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:04:00,200 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2020-10-12 10:04:00,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 10:04:00,201 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-10-12 10:04:00,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:04:00,201 INFO L225 Difference]: With dead ends: 67 [2020-10-12 10:04:00,202 INFO L226 Difference]: Without dead ends: 40 [2020-10-12 10:04:00,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 10:04:00,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-12 10:04:00,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-12 10:04:00,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-12 10:04:00,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-10-12 10:04:00,213 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 35 [2020-10-12 10:04:00,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:04:00,214 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-10-12 10:04:00,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 10:04:00,214 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-10-12 10:04:00,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 10:04:00,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:04:00,215 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:04:00,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 10:04:00,215 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:04:00,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:04:00,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1862891402, now seen corresponding path program 10 times [2020-10-12 10:04:00,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:04:00,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834580699] [2020-10-12 10:04:00,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:04:00,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:00,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:00,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:00,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:00,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 10:04:00,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:04:00,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 584 [2020-10-12 10:04:00,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:00,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 10:04:00,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:04:00,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:04:00,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:04:00,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:04:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:00,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:00,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:00,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:04:00,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:00,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:04:00,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:00,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:00,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:00,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:00,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:04:00,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 10:04:00,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:00,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:00,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:00,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:00,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:00,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:00,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:00,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:00,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:00,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:00,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:04:00,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-12 10:04:00,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:00,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:00,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:00,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:00,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:00,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:00,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:00,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:00,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:00,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:00,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:04:00,904 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-12 10:04:00,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834580699] [2020-10-12 10:04:00,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:04:00,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 10:04:00,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233691532] [2020-10-12 10:04:00,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 10:04:00,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:04:00,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 10:04:00,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 10:04:00,907 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 9 states. [2020-10-12 10:04:01,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:04:01,011 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2020-10-12 10:04:01,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 10:04:01,011 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2020-10-12 10:04:01,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:04:01,012 INFO L225 Difference]: With dead ends: 72 [2020-10-12 10:04:01,012 INFO L226 Difference]: Without dead ends: 45 [2020-10-12 10:04:01,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 10:04:01,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-12 10:04:01,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2020-10-12 10:04:01,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-12 10:04:01,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2020-10-12 10:04:01,026 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 36 [2020-10-12 10:04:01,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:04:01,026 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2020-10-12 10:04:01,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 10:04:01,026 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2020-10-12 10:04:01,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-12 10:04:01,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:04:01,028 INFO L422 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:04:01,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 10:04:01,029 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:04:01,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:04:01,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1305473193, now seen corresponding path program 11 times [2020-10-12 10:04:01,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:04:01,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743618545] [2020-10-12 10:04:01,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:04:01,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:01,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:01,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:01,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:02,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:02,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 10:04:02,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:04:02,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1713 [2020-10-12 10:04:02,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:02,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 10:04:02,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:04:02,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 10:04:02,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:02,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:04:02,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:02,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:02,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:02,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:04:02,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:02,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:04:02,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:02,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:02,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:02,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:02,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:02,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 10:04:02,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:02,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:02,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:02,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:02,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:02,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:04:02,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:02,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:02,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:02,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:02,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:02,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 10:04:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:02,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:02,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:02,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:02,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:02,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:04:02,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:02,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:02,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:02,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:02,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:02,987 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-12 10:04:02,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743618545] [2020-10-12 10:04:02,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:04:02,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 10:04:02,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114705803] [2020-10-12 10:04:02,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 10:04:02,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:04:02,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 10:04:02,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-12 10:04:02,989 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 14 states. [2020-10-12 10:04:03,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:04:03,448 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2020-10-12 10:04:03,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 10:04:03,449 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 38 [2020-10-12 10:04:03,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:04:03,450 INFO L225 Difference]: With dead ends: 61 [2020-10-12 10:04:03,451 INFO L226 Difference]: Without dead ends: 59 [2020-10-12 10:04:03,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2020-10-12 10:04:03,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-12 10:04:03,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2020-10-12 10:04:03,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-12 10:04:03,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2020-10-12 10:04:03,468 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 38 [2020-10-12 10:04:03,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:04:03,468 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2020-10-12 10:04:03,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 10:04:03,469 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2020-10-12 10:04:03,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-12 10:04:03,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:04:03,469 INFO L422 BasicCegarLoop]: trace histogram [6, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:04:03,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 10:04:03,470 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:04:03,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:04:03,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1375312454, now seen corresponding path program 12 times [2020-10-12 10:04:03,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:04:03,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538522278] [2020-10-12 10:04:03,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:04:03,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:03,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:03,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:04,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:05,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:05,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-12 10:04:05,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:04:05,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1590 [2020-10-12 10:04:05,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:05,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 10:04:05,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:04:05,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 10:04:05,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:05,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:04:05,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:05,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:05,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:05,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:04:05,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:05,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:05,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:05,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:05,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:05,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:05,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:05,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-12 10:04:05,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:05,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:05,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:05,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:05,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:05,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:04:05,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:05,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:05,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:05,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:05,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:05,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 10:04:05,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:05,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:05,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:05,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:05,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:05,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:04:05,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:05,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:05,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:05,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:05,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:05,299 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-12 10:04:05,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538522278] [2020-10-12 10:04:05,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:04:05,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 10:04:05,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182476860] [2020-10-12 10:04:05,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 10:04:05,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:04:05,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 10:04:05,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-12 10:04:05,304 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand 15 states. [2020-10-12 10:04:05,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:04:05,890 INFO L93 Difference]: Finished difference Result 79 states and 89 transitions. [2020-10-12 10:04:05,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 10:04:05,891 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 39 [2020-10-12 10:04:05,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:04:05,894 INFO L225 Difference]: With dead ends: 79 [2020-10-12 10:04:05,895 INFO L226 Difference]: Without dead ends: 77 [2020-10-12 10:04:05,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2020-10-12 10:04:05,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-12 10:04:05,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 56. [2020-10-12 10:04:05,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-12 10:04:05,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 62 transitions. [2020-10-12 10:04:05,914 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 62 transitions. Word has length 39 [2020-10-12 10:04:05,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:04:05,918 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 62 transitions. [2020-10-12 10:04:05,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 10:04:05,918 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 62 transitions. [2020-10-12 10:04:05,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-12 10:04:05,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:04:05,919 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:04:05,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 10:04:05,920 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:04:05,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:04:05,920 INFO L82 PathProgramCache]: Analyzing trace with hash -754637751, now seen corresponding path program 13 times [2020-10-12 10:04:05,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:04:05,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723625365] [2020-10-12 10:04:05,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:04:05,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:05,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:05,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:06,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:07,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:07,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 10:04:07,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:04:07,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2046 [2020-10-12 10:04:07,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:07,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 10:04:07,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:04:07,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 10:04:07,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:08,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:04:08,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:08,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:08,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:08,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:04:08,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:08,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:04:08,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:08,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:08,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:08,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:08,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:08,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 10:04:08,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:08,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:08,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:08,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:08,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:08,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:04:08,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:08,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:08,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:08,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:08,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:08,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 10:04:08,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:08,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:08,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:08,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:08,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:08,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:04:08,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:08,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:08,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:08,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:08,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:08,273 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-12 10:04:08,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723625365] [2020-10-12 10:04:08,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:04:08,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 10:04:08,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588488204] [2020-10-12 10:04:08,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 10:04:08,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:04:08,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 10:04:08,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-10-12 10:04:08,276 INFO L87 Difference]: Start difference. First operand 56 states and 62 transitions. Second operand 16 states. [2020-10-12 10:04:08,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:04:08,723 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2020-10-12 10:04:08,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 10:04:08,725 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 40 [2020-10-12 10:04:08,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:04:08,726 INFO L225 Difference]: With dead ends: 66 [2020-10-12 10:04:08,726 INFO L226 Difference]: Without dead ends: 64 [2020-10-12 10:04:08,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2020-10-12 10:04:08,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-12 10:04:08,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 48. [2020-10-12 10:04:08,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-12 10:04:08,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2020-10-12 10:04:08,740 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 40 [2020-10-12 10:04:08,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:04:08,742 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2020-10-12 10:04:08,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 10:04:08,742 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2020-10-12 10:04:08,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-12 10:04:08,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:04:08,743 INFO L422 BasicCegarLoop]: trace histogram [6, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:04:08,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 10:04:08,743 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:04:08,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:04:08,743 INFO L82 PathProgramCache]: Analyzing trace with hash 2035293960, now seen corresponding path program 14 times [2020-10-12 10:04:08,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:04:08,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1057384841] [2020-10-12 10:04:08,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:04:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:08,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:08,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:09,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:09,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 10:04:09,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:04:09,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 775 [2020-10-12 10:04:09,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:09,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:04:09,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:04:09,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 10:04:09,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:09,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:04:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:09,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:09,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:09,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:04:09,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:09,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:09,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:09,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:09,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:09,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:09,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:09,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 10:04:09,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:09,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:09,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:09,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:09,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:09,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:09,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:09,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:09,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:09,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:09,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:09,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 10:04:09,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:09,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:09,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:09,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:09,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:09,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:09,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:09,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:09,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:09,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:09,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:09,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-12 10:04:09,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:09,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:09,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:09,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:09,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:09,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:09,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:09,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:09,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:09,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:09,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:09,609 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-12 10:04:09,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1057384841] [2020-10-12 10:04:09,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:04:09,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 10:04:09,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381593272] [2020-10-12 10:04:09,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 10:04:09,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:04:09,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 10:04:09,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-12 10:04:09,616 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 10 states. [2020-10-12 10:04:09,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:04:09,716 INFO L93 Difference]: Finished difference Result 85 states and 89 transitions. [2020-10-12 10:04:09,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 10:04:09,717 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2020-10-12 10:04:09,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:04:09,718 INFO L225 Difference]: With dead ends: 85 [2020-10-12 10:04:09,718 INFO L226 Difference]: Without dead ends: 50 [2020-10-12 10:04:09,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-12 10:04:09,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-12 10:04:09,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-12 10:04:09,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-12 10:04:09,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2020-10-12 10:04:09,727 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 45 [2020-10-12 10:04:09,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:04:09,727 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2020-10-12 10:04:09,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 10:04:09,727 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2020-10-12 10:04:09,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-12 10:04:09,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:04:09,728 INFO L422 BasicCegarLoop]: trace histogram [7, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:04:09,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 10:04:09,728 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:04:09,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:04:09,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1044233260, now seen corresponding path program 15 times [2020-10-12 10:04:09,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:04:09,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285812959] [2020-10-12 10:04:09,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:04:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:09,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:09,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:10,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:10,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 10:04:10,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:04:10,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 859 [2020-10-12 10:04:10,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:10,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 10:04:10,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:04:10,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 10:04:10,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:10,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:04:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:10,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:10,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:10,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:04:10,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:10,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:10,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:10,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:10,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:10,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:10,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:10,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-12 10:04:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:10,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:10,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:10,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:10,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:10,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:10,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:10,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:10,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:10,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:10,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:10,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 10:04:10,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:10,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:10,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:10,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:10,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:10,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:10,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:10,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:10,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:10,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:10,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:10,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 10:04:10,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:10,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:10,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:10,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:10,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:10,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:10,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:10,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:10,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:10,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:10,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:10,686 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-12 10:04:10,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285812959] [2020-10-12 10:04:10,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:04:10,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 10:04:10,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518993837] [2020-10-12 10:04:10,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 10:04:10,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:04:10,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 10:04:10,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-12 10:04:10,691 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand 11 states. [2020-10-12 10:04:10,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:04:10,801 INFO L93 Difference]: Finished difference Result 90 states and 96 transitions. [2020-10-12 10:04:10,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 10:04:10,802 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 46 [2020-10-12 10:04:10,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:04:10,803 INFO L225 Difference]: With dead ends: 90 [2020-10-12 10:04:10,803 INFO L226 Difference]: Without dead ends: 55 [2020-10-12 10:04:10,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-12 10:04:10,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-12 10:04:10,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2020-10-12 10:04:10,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-12 10:04:10,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2020-10-12 10:04:10,815 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 46 [2020-10-12 10:04:10,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:04:10,815 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2020-10-12 10:04:10,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 10:04:10,815 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2020-10-12 10:04:10,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-12 10:04:10,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:04:10,816 INFO L422 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:04:10,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 10:04:10,816 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:04:10,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:04:10,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1719679413, now seen corresponding path program 16 times [2020-10-12 10:04:10,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:04:10,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606471209] [2020-10-12 10:04:10,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:04:10,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:10,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:10,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:11,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:13,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:13,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 10:04:13,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:04:13,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2233 [2020-10-12 10:04:13,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:13,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 10:04:13,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:04:13,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 10:04:13,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:13,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:04:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:13,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:13,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:13,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:04:13,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:13,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:13,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:13,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:13,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:13,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:13,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:13,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 10:04:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:13,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:13,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:13,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:13,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:13,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:04:13,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:13,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:13,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:13,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:13,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:13,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:04:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:13,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:13,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:13,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:13,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:13,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:04:13,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:13,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:13,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:13,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:13,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:13,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-12 10:04:13,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:13,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:13,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:13,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:13,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:13,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:04:13,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:13,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:13,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:13,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:13,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:13,326 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-12 10:04:13,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606471209] [2020-10-12 10:04:13,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:04:13,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 10:04:13,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66559556] [2020-10-12 10:04:13,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 10:04:13,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:04:13,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 10:04:13,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-12 10:04:13,328 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 16 states. [2020-10-12 10:04:13,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:04:13,929 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2020-10-12 10:04:13,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 10:04:13,930 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 48 [2020-10-12 10:04:13,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:04:13,931 INFO L225 Difference]: With dead ends: 74 [2020-10-12 10:04:13,931 INFO L226 Difference]: Without dead ends: 72 [2020-10-12 10:04:13,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2020-10-12 10:04:13,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-12 10:04:13,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2020-10-12 10:04:13,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-12 10:04:13,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2020-10-12 10:04:13,942 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 48 [2020-10-12 10:04:13,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:04:13,942 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2020-10-12 10:04:13,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 10:04:13,943 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2020-10-12 10:04:13,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-12 10:04:13,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:04:13,943 INFO L422 BasicCegarLoop]: trace histogram [8, 5, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:04:13,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 10:04:13,944 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:04:13,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:04:13,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1719933928, now seen corresponding path program 17 times [2020-10-12 10:04:13,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:04:13,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382408310] [2020-10-12 10:04:13,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:04:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:13,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:13,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:14,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:16,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:16,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 10:04:16,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:04:16,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2336 [2020-10-12 10:04:16,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:16,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 10:04:16,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:04:16,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 10:04:16,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:16,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:04:16,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:16,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:16,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:16,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:04:16,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:16,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:16,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:16,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:16,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:16,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:16,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:16,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-12 10:04:16,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:16,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:16,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:16,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:16,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:16,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:16,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:16,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:16,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:16,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:16,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:16,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 10:04:16,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:16,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:16,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:16,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:16,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:16,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:04:16,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:16,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:16,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:16,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:16,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:16,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 10:04:16,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:16,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:16,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:16,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:16,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:16,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:16,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:16,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:16,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:16,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:16,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:16,559 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-12 10:04:16,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382408310] [2020-10-12 10:04:16,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:04:16,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 10:04:16,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475343688] [2020-10-12 10:04:16,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 10:04:16,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:04:16,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 10:04:16,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-12 10:04:16,561 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand 17 states. [2020-10-12 10:04:17,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:04:17,182 INFO L93 Difference]: Finished difference Result 94 states and 106 transitions. [2020-10-12 10:04:17,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 10:04:17,183 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 49 [2020-10-12 10:04:17,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:04:17,184 INFO L225 Difference]: With dead ends: 94 [2020-10-12 10:04:17,184 INFO L226 Difference]: Without dead ends: 92 [2020-10-12 10:04:17,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2020-10-12 10:04:17,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-12 10:04:17,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 69. [2020-10-12 10:04:17,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-12 10:04:17,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 76 transitions. [2020-10-12 10:04:17,197 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 76 transitions. Word has length 49 [2020-10-12 10:04:17,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:04:17,198 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 76 transitions. [2020-10-12 10:04:17,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 10:04:17,198 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 76 transitions. [2020-10-12 10:04:17,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-12 10:04:17,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:04:17,199 INFO L422 BasicCegarLoop]: trace histogram [8, 6, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:04:17,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 10:04:17,199 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:04:17,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:04:17,200 INFO L82 PathProgramCache]: Analyzing trace with hash 973765099, now seen corresponding path program 18 times [2020-10-12 10:04:17,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:04:17,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173694994] [2020-10-12 10:04:17,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:04:17,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:17,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:17,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:18,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:19,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:19,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 10:04:19,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:04:19,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2472 [2020-10-12 10:04:19,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:19,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 10:04:19,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:04:19,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 10:04:19,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:19,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:04:19,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:19,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:20,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:20,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:04:20,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:20,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:20,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:20,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:20,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:20,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:20,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:20,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-12 10:04:20,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:20,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:20,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:20,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:20,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:20,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:04:20,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:20,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:20,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:20,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:20,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:20,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-12 10:04:20,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:20,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:20,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:20,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:20,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:20,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:04:20,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:20,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:20,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:20,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:20,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:20,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:04:20,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:20,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:20,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:20,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:20,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:20,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:20,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:20,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:20,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:20,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:20,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:20,027 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-12 10:04:20,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173694994] [2020-10-12 10:04:20,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:04:20,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 10:04:20,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846479162] [2020-10-12 10:04:20,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 10:04:20,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:04:20,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 10:04:20,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2020-10-12 10:04:20,029 INFO L87 Difference]: Start difference. First operand 69 states and 76 transitions. Second operand 18 states. [2020-10-12 10:04:20,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:04:20,586 INFO L93 Difference]: Finished difference Result 79 states and 86 transitions. [2020-10-12 10:04:20,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 10:04:20,589 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 50 [2020-10-12 10:04:20,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:04:20,589 INFO L225 Difference]: With dead ends: 79 [2020-10-12 10:04:20,589 INFO L226 Difference]: Without dead ends: 77 [2020-10-12 10:04:20,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2020-10-12 10:04:20,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-12 10:04:20,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 58. [2020-10-12 10:04:20,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-12 10:04:20,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2020-10-12 10:04:20,600 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 50 [2020-10-12 10:04:20,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:04:20,601 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2020-10-12 10:04:20,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 10:04:20,601 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2020-10-12 10:04:20,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-12 10:04:20,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:04:20,601 INFO L422 BasicCegarLoop]: trace histogram [8, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:04:20,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 10:04:20,602 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:04:20,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:04:20,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1852502234, now seen corresponding path program 19 times [2020-10-12 10:04:20,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:04:20,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383867031] [2020-10-12 10:04:20,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:04:20,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:20,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:20,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:21,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:21,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 10:04:21,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:04:21,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 826 [2020-10-12 10:04:21,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:21,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 10:04:21,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:04:21,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 10:04:21,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:21,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:04:21,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:21,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:21,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:21,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:04:21,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:21,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:21,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:21,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:21,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:21,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:21,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:04:21,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 10:04:21,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:21,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:21,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:21,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:21,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:21,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:21,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:21,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:21,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:21,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:21,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:04:21,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:04:21,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:21,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:21,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:21,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:21,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:21,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:21,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:21,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:21,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:21,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:21,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:04:21,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-12 10:04:21,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:21,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:21,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:21,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:21,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:21,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:21,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:21,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:21,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:21,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:21,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:04:21,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 10:04:21,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:21,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:21,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:21,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:21,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:21,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:21,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:21,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:21,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:21,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:21,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:04:21,567 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 8 proven. 36 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-12 10:04:21,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383867031] [2020-10-12 10:04:21,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:04:21,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 10:04:21,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855767219] [2020-10-12 10:04:21,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 10:04:21,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:04:21,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 10:04:21,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-12 10:04:21,569 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 12 states. [2020-10-12 10:04:21,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:04:21,738 INFO L93 Difference]: Finished difference Result 103 states and 107 transitions. [2020-10-12 10:04:21,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 10:04:21,739 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 55 [2020-10-12 10:04:21,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:04:21,740 INFO L225 Difference]: With dead ends: 103 [2020-10-12 10:04:21,740 INFO L226 Difference]: Without dead ends: 60 [2020-10-12 10:04:21,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-12 10:04:21,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-12 10:04:21,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-12 10:04:21,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-12 10:04:21,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2020-10-12 10:04:21,754 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 55 [2020-10-12 10:04:21,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:04:21,754 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2020-10-12 10:04:21,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 10:04:21,754 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2020-10-12 10:04:21,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 10:04:21,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:04:21,755 INFO L422 BasicCegarLoop]: trace histogram [9, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:04:21,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 10:04:21,755 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:04:21,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:04:21,756 INFO L82 PathProgramCache]: Analyzing trace with hash 67866442, now seen corresponding path program 20 times [2020-10-12 10:04:21,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:04:21,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078122530] [2020-10-12 10:04:21,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:04:21,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:21,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:21,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:23,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:23,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 10:04:23,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:04:23,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1401 [2020-10-12 10:04:23,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:23,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 10:04:23,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:04:23,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 10:04:23,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:23,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:04:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:23,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:23,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:23,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:04:23,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:23,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:23,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:23,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:23,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:23,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:23,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:04:23,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-12 10:04:23,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:23,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:23,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:23,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:23,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:23,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:04:23,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:23,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:23,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:23,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:23,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:04:23,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 10:04:23,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:23,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:23,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:23,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:23,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:23,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:04:23,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:23,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:23,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:23,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:23,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:04:23,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 10:04:23,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:23,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:23,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:23,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:23,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:23,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:04:23,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:23,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:23,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:23,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:23,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:23,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 10:04:23,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:23,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:23,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:23,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:23,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:23,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:23,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:23,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:23,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:23,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:23,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:04:23,325 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 8 proven. 45 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-12 10:04:23,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078122530] [2020-10-12 10:04:23,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:04:23,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 10:04:23,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42182162] [2020-10-12 10:04:23,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 10:04:23,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:04:23,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 10:04:23,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-12 10:04:23,329 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand 13 states. [2020-10-12 10:04:23,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:04:23,524 INFO L93 Difference]: Finished difference Result 108 states and 114 transitions. [2020-10-12 10:04:23,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 10:04:23,525 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 56 [2020-10-12 10:04:23,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:04:23,526 INFO L225 Difference]: With dead ends: 108 [2020-10-12 10:04:23,526 INFO L226 Difference]: Without dead ends: 65 [2020-10-12 10:04:23,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-12 10:04:23,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-12 10:04:23,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 61. [2020-10-12 10:04:23,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-12 10:04:23,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2020-10-12 10:04:23,544 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 56 [2020-10-12 10:04:23,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:04:23,545 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2020-10-12 10:04:23,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 10:04:23,545 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2020-10-12 10:04:23,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-12 10:04:23,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:04:23,546 INFO L422 BasicCegarLoop]: trace histogram [10, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:04:23,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 10:04:23,551 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:04:23,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:04:23,552 INFO L82 PathProgramCache]: Analyzing trace with hash -599774615, now seen corresponding path program 21 times [2020-10-12 10:04:23,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:04:23,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525360051] [2020-10-12 10:04:23,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:04:23,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:23,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:23,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:24,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:26,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:26,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 10:04:26,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:04:26,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2575 [2020-10-12 10:04:26,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:26,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 10:04:26,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:04:26,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 10:04:26,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:26,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:04:26,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:26,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:26,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:26,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:04:26,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:26,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:26,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:26,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:26,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:26,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:26,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:26,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 10:04:26,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:26,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:26,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:26,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:26,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:26,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:04:26,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:26,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:26,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:26,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:26,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:26,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-12 10:04:26,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:26,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:26,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:26,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:26,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:26,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:04:26,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:26,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:26,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:26,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:26,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:26,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 10:04:26,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:26,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:26,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:26,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:26,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:26,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:04:26,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:26,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:26,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:26,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:26,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:26,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 10:04:26,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:26,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:26,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:26,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:26,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:26,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:04:26,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:26,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:26,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:26,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:26,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:26,489 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 8 proven. 41 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-12 10:04:26,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525360051] [2020-10-12 10:04:26,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:04:26,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 10:04:26,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360208123] [2020-10-12 10:04:26,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 10:04:26,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:04:26,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 10:04:26,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2020-10-12 10:04:26,491 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand 18 states. [2020-10-12 10:04:27,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:04:27,110 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2020-10-12 10:04:27,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 10:04:27,110 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 58 [2020-10-12 10:04:27,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:04:27,113 INFO L225 Difference]: With dead ends: 87 [2020-10-12 10:04:27,113 INFO L226 Difference]: Without dead ends: 85 [2020-10-12 10:04:27,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2020-10-12 10:04:27,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-12 10:04:27,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2020-10-12 10:04:27,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-12 10:04:27,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 88 transitions. [2020-10-12 10:04:27,136 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 88 transitions. Word has length 58 [2020-10-12 10:04:27,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:04:27,136 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 88 transitions. [2020-10-12 10:04:27,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 10:04:27,136 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 88 transitions. [2020-10-12 10:04:27,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-12 10:04:27,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:04:27,137 INFO L422 BasicCegarLoop]: trace histogram [10, 6, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:04:27,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 10:04:27,137 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:04:27,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:04:27,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1539828742, now seen corresponding path program 22 times [2020-10-12 10:04:27,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:04:27,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2040440256] [2020-10-12 10:04:27,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:04:27,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:27,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:27,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:28,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:30,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:30,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 10:04:30,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:04:30,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2888 [2020-10-12 10:04:30,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:30,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 10:04:30,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:04:30,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-12 10:04:30,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:30,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:04:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:30,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:30,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:30,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:04:30,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:30,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:30,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:30,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:30,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:30,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:30,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:30,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 10:04:30,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:30,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:30,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:30,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:30,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:30,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:04:30,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:30,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:30,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:30,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:30,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:30,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-12 10:04:30,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:30,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:30,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:30,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:30,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:30,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:04:30,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:30,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:30,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:30,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:30,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:30,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-12 10:04:30,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:30,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:30,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:30,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:30,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:30,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:04:30,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:30,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:30,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:30,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:30,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:30,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 10:04:30,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:30,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:30,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:30,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:30,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:30,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:04:30,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:30,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:30,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:30,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:30,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:30,389 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 8 proven. 47 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-12 10:04:30,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2040440256] [2020-10-12 10:04:30,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:04:30,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 10:04:30,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731513004] [2020-10-12 10:04:30,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 10:04:30,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:04:30,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 10:04:30,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-10-12 10:04:30,391 INFO L87 Difference]: Start difference. First operand 81 states and 88 transitions. Second operand 19 states. [2020-10-12 10:04:31,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:04:31,334 INFO L93 Difference]: Finished difference Result 111 states and 125 transitions. [2020-10-12 10:04:31,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 10:04:31,334 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 59 [2020-10-12 10:04:31,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:04:31,336 INFO L225 Difference]: With dead ends: 111 [2020-10-12 10:04:31,336 INFO L226 Difference]: Without dead ends: 109 [2020-10-12 10:04:31,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=117, Invalid=939, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 10:04:31,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-12 10:04:31,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 82. [2020-10-12 10:04:31,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-12 10:04:31,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2020-10-12 10:04:31,352 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 59 [2020-10-12 10:04:31,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:04:31,352 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2020-10-12 10:04:31,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 10:04:31,352 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2020-10-12 10:04:31,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-12 10:04:31,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:04:31,353 INFO L422 BasicCegarLoop]: trace histogram [10, 7, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:04:31,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 10:04:31,354 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:04:31,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:04:31,354 INFO L82 PathProgramCache]: Analyzing trace with hash -851943927, now seen corresponding path program 23 times [2020-10-12 10:04:31,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:04:31,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528017434] [2020-10-12 10:04:31,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:04:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:31,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:31,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:32,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:34,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:34,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 10:04:34,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:04:34,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3215 [2020-10-12 10:04:34,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:34,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 10:04:34,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:04:34,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 10:04:34,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:34,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:04:34,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:34,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:34,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:34,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:04:34,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:34,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:34,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:34,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:34,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:34,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:34,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:34,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 10:04:34,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:34,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:34,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:34,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:34,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:34,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:04:34,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:34,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:34,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:34,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:34,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:34,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 10:04:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:34,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:34,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:34,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:34,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:34,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:04:34,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:34,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:34,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:34,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:34,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:34,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 10:04:34,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:34,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:34,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:34,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:34,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:34,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:04:34,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:34,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:34,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:34,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:34,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:34,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-12 10:04:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:34,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:34,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:34,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:34,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:34,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:04:34,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:34,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:34,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:34,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:34,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:34,988 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 8 proven. 54 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-12 10:04:34,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1528017434] [2020-10-12 10:04:34,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:04:34,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 10:04:34,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722194204] [2020-10-12 10:04:34,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 10:04:34,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:04:34,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 10:04:34,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2020-10-12 10:04:34,990 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand 20 states. [2020-10-12 10:04:35,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:04:35,812 INFO L93 Difference]: Finished difference Result 92 states and 100 transitions. [2020-10-12 10:04:35,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 10:04:35,812 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 60 [2020-10-12 10:04:35,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:04:35,813 INFO L225 Difference]: With dead ends: 92 [2020-10-12 10:04:35,813 INFO L226 Difference]: Without dead ends: 90 [2020-10-12 10:04:35,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=719, Unknown=0, NotChecked=0, Total=812 [2020-10-12 10:04:35,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-12 10:04:35,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 68. [2020-10-12 10:04:35,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-12 10:04:35,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2020-10-12 10:04:35,824 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 60 [2020-10-12 10:04:35,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:04:35,825 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions. [2020-10-12 10:04:35,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 10:04:35,825 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions. [2020-10-12 10:04:35,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-12 10:04:35,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:04:35,826 INFO L422 BasicCegarLoop]: trace histogram [10, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:04:35,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 10:04:35,826 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:04:35,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:04:35,826 INFO L82 PathProgramCache]: Analyzing trace with hash -658543288, now seen corresponding path program 24 times [2020-10-12 10:04:35,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:04:35,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689931594] [2020-10-12 10:04:35,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:04:35,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:35,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:35,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:37,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:37,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-12 10:04:37,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:04:37,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1424 [2020-10-12 10:04:37,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:37,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 10:04:37,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:04:37,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 10:04:37,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:37,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:04:37,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:37,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:37,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:37,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:04:37,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:37,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:04:37,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:37,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:37,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:37,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:37,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:37,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 10:04:37,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:37,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:37,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:37,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:37,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:37,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:04:37,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:37,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:37,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:37,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:37,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:37,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-12 10:04:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:37,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:37,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:37,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:37,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:37,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:04:37,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:37,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:37,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:37,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:37,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:37,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 10:04:37,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:37,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:37,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:37,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:37,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:37,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:04:37,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:37,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:37,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:37,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:37,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:37,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 10:04:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:37,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:37,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:37,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:37,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:37,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:04:37,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:37,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:37,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:37,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:37,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:37,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 10:04:37,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:37,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:37,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:37,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:37,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:37,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:04:37,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:37,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:37,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:37,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:37,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:37,388 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 10 proven. 55 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-10-12 10:04:37,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1689931594] [2020-10-12 10:04:37,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:04:37,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 10:04:37,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995218080] [2020-10-12 10:04:37,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 10:04:37,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:04:37,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 10:04:37,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-12 10:04:37,390 INFO L87 Difference]: Start difference. First operand 68 states and 70 transitions. Second operand 14 states. [2020-10-12 10:04:37,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:04:37,542 INFO L93 Difference]: Finished difference Result 121 states and 125 transitions. [2020-10-12 10:04:37,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 10:04:37,542 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 65 [2020-10-12 10:04:37,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:04:37,543 INFO L225 Difference]: With dead ends: 121 [2020-10-12 10:04:37,543 INFO L226 Difference]: Without dead ends: 70 [2020-10-12 10:04:37,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-12 10:04:37,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-12 10:04:37,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-12 10:04:37,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-12 10:04:37,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2020-10-12 10:04:37,553 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 65 [2020-10-12 10:04:37,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:04:37,554 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2020-10-12 10:04:37,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 10:04:37,554 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2020-10-12 10:04:37,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 10:04:37,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:04:37,554 INFO L422 BasicCegarLoop]: trace histogram [11, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:04:37,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 10:04:37,554 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:04:37,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:04:37,555 INFO L82 PathProgramCache]: Analyzing trace with hash 2034176108, now seen corresponding path program 25 times [2020-10-12 10:04:37,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:04:37,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529421254] [2020-10-12 10:04:37,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:04:37,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:37,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:37,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:39,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:39,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 10:04:39,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:04:39,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1920 [2020-10-12 10:04:39,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:39,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 10:04:39,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:04:39,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 10:04:39,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:39,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:04:39,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:39,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:39,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:39,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:04:39,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:39,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:39,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:39,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:39,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:39,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:39,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:39,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 10:04:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:39,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:39,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:39,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:39,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:39,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:04:39,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:39,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:39,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:39,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:39,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:39,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-12 10:04:39,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:39,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:39,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:39,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:39,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:39,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:04:39,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:39,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:39,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:39,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:39,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:39,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-12 10:04:39,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:39,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:39,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:39,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:39,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:39,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:04:39,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:39,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:39,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:39,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:39,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:39,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 10:04:39,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:39,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:39,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:39,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:39,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:39,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:39,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:39,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:39,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:39,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:39,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:39,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 10:04:39,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:39,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:39,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:39,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:39,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:39,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:04:39,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:39,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:39,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:04:39,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:39,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:39,618 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 10 proven. 66 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-10-12 10:04:39,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529421254] [2020-10-12 10:04:39,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:04:39,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 10:04:39,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826091193] [2020-10-12 10:04:39,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 10:04:39,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:04:39,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 10:04:39,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-12 10:04:39,620 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand 15 states. [2020-10-12 10:04:39,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:04:39,793 INFO L93 Difference]: Finished difference Result 126 states and 132 transitions. [2020-10-12 10:04:39,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 10:04:39,793 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 66 [2020-10-12 10:04:39,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:04:39,794 INFO L225 Difference]: With dead ends: 126 [2020-10-12 10:04:39,794 INFO L226 Difference]: Without dead ends: 75 [2020-10-12 10:04:39,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-12 10:04:39,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-12 10:04:39,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2020-10-12 10:04:39,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-12 10:04:39,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2020-10-12 10:04:39,811 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 66 [2020-10-12 10:04:39,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:04:39,811 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2020-10-12 10:04:39,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 10:04:39,811 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2020-10-12 10:04:39,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 10:04:39,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:04:39,814 INFO L422 BasicCegarLoop]: trace histogram [12, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:04:39,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 10:04:39,814 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:04:39,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:04:39,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1981989749, now seen corresponding path program 26 times [2020-10-12 10:04:39,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:04:39,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499903209] [2020-10-12 10:04:39,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:04:39,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:39,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:39,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:41,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:43,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:43,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 10:04:43,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:04:43,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4129 [2020-10-12 10:04:43,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:43,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 10:04:43,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:04:43,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 10:04:43,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:44,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:04:44,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:44,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:44,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:44,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:04:44,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:44,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:44,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:44,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:44,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:44,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:44,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:44,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 10:04:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:44,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:44,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:44,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:44,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:44,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:44,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:44,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:44,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:44,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:44,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:44,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 10:04:44,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:44,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:44,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:44,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:44,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:44,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:44,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:44,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:44,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:44,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:44,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:44,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 10:04:44,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:44,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:44,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:44,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:44,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:44,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:44,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:44,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:44,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:44,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:44,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:44,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-12 10:04:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:44,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:44,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:44,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:44,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:44,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:44,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:44,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:44,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:44,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:44,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:44,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-12 10:04:44,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:44,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:44,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:44,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:44,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:44,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:44,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:44,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:44,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:44,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:44,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:44,371 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 10 proven. 61 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-12 10:04:44,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499903209] [2020-10-12 10:04:44,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:04:44,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 10:04:44,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721941323] [2020-10-12 10:04:44,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 10:04:44,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:04:44,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 10:04:44,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2020-10-12 10:04:44,373 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand 20 states. [2020-10-12 10:04:45,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:04:45,086 INFO L93 Difference]: Finished difference Result 100 states and 109 transitions. [2020-10-12 10:04:45,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 10:04:45,087 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 68 [2020-10-12 10:04:45,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:04:45,089 INFO L225 Difference]: With dead ends: 100 [2020-10-12 10:04:45,089 INFO L226 Difference]: Without dead ends: 98 [2020-10-12 10:04:45,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=732, Unknown=0, NotChecked=0, Total=812 [2020-10-12 10:04:45,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-12 10:04:45,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2020-10-12 10:04:45,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-12 10:04:45,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 102 transitions. [2020-10-12 10:04:45,106 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 102 transitions. Word has length 68 [2020-10-12 10:04:45,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:04:45,106 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 102 transitions. [2020-10-12 10:04:45,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 10:04:45,107 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 102 transitions. [2020-10-12 10:04:45,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-12 10:04:45,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:04:45,108 INFO L422 BasicCegarLoop]: trace histogram [12, 7, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:04:45,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 10:04:45,108 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:04:45,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:04:45,108 INFO L82 PathProgramCache]: Analyzing trace with hash 232860200, now seen corresponding path program 27 times [2020-10-12 10:04:45,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:04:45,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576399776] [2020-10-12 10:04:45,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:04:45,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:45,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:45,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:46,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:49,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:49,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 10:04:49,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:04:49,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4868 [2020-10-12 10:04:49,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:49,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 10:04:49,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:04:49,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 10:04:49,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:50,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:04:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:50,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:50,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:50,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:04:50,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:50,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:50,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:50,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:50,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:50,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:50,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:50,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:04:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:50,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:50,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:50,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:50,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:50,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:04:50,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:50,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:50,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:50,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:50,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:50,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-12 10:04:50,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:50,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:50,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:50,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:50,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:50,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:50,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:50,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:50,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:50,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:50,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:50,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 10:04:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:50,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:50,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:50,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:50,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:50,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:04:50,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:50,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:50,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:50,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:50,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:50,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 10:04:50,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:50,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:50,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:50,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:50,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:50,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:04:50,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:50,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:50,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:50,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:50,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:50,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 10:04:50,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:50,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:50,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:50,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:50,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:50,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:04:50,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:50,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:50,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:50,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:50,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:50,446 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 10 proven. 68 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-12 10:04:50,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [576399776] [2020-10-12 10:04:50,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:04:50,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 10:04:50,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428796032] [2020-10-12 10:04:50,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 10:04:50,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:04:50,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 10:04:50,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2020-10-12 10:04:50,448 INFO L87 Difference]: Start difference. First operand 94 states and 102 transitions. Second operand 21 states. [2020-10-12 10:04:51,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:04:51,422 INFO L93 Difference]: Finished difference Result 126 states and 142 transitions. [2020-10-12 10:04:51,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 10:04:51,423 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 69 [2020-10-12 10:04:51,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:04:51,424 INFO L225 Difference]: With dead ends: 126 [2020-10-12 10:04:51,424 INFO L226 Difference]: Without dead ends: 124 [2020-10-12 10:04:51,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=94, Invalid=776, Unknown=0, NotChecked=0, Total=870 [2020-10-12 10:04:51,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-12 10:04:51,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 95. [2020-10-12 10:04:51,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-12 10:04:51,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 104 transitions. [2020-10-12 10:04:51,437 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 104 transitions. Word has length 69 [2020-10-12 10:04:51,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:04:51,438 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 104 transitions. [2020-10-12 10:04:51,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 10:04:51,438 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 104 transitions. [2020-10-12 10:04:51,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 10:04:51,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:04:51,439 INFO L422 BasicCegarLoop]: trace histogram [12, 8, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:04:51,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 10:04:51,439 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:04:51,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:04:51,439 INFO L82 PathProgramCache]: Analyzing trace with hash 173731883, now seen corresponding path program 28 times [2020-10-12 10:04:51,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:04:51,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216835045] [2020-10-12 10:04:51,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:04:51,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:51,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:51,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:53,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:56,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:56,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 10:04:56,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:04:56,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 10:04:56,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:56,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 10:04:56,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:04:56,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 10:04:56,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:56,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:04:56,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:56,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:56,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:56,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:04:56,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:56,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:56,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:56,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:04:56,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:56,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:04:56,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:56,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 10:04:56,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:56,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:56,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:56,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:56,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:56,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:04:56,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:56,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:56,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:56,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:56,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:56,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 10:04:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:56,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:56,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:56,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:56,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:56,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:56,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:56,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:56,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:56,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:56,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:56,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 10:04:56,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:56,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:56,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:56,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:56,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:56,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:56,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:56,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:56,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:56,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:56,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:56,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-12 10:04:56,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:56,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:56,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:56,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:56,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:56,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:56,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:56,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:56,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:56,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:56,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:56,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-12 10:04:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:56,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:56,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:04:56,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:04:56,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:04:56,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:04:56,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:04:56,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:04:56,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:04:56,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:04:56,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:04:56,950 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 10 proven. 76 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-12 10:04:56,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216835045] [2020-10-12 10:04:56,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:04:56,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 10:04:56,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894564738] [2020-10-12 10:04:56,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 10:04:56,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:04:56,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 10:04:56,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2020-10-12 10:04:56,952 INFO L87 Difference]: Start difference. First operand 95 states and 104 transitions. Second operand 22 states. [2020-10-12 10:04:57,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:04:57,957 INFO L93 Difference]: Finished difference Result 105 states and 114 transitions. [2020-10-12 10:04:57,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 10:04:57,959 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 70 [2020-10-12 10:04:57,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:04:57,960 INFO L225 Difference]: With dead ends: 105 [2020-10-12 10:04:57,960 INFO L226 Difference]: Without dead ends: 103 [2020-10-12 10:04:57,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=103, Invalid=889, Unknown=0, NotChecked=0, Total=992 [2020-10-12 10:04:57,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-12 10:04:57,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 78. [2020-10-12 10:04:57,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-12 10:04:57,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2020-10-12 10:04:57,979 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 70 [2020-10-12 10:04:57,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:04:57,980 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2020-10-12 10:04:57,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 10:04:57,980 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2020-10-12 10:04:57,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-12 10:04:57,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:04:57,981 INFO L422 BasicCegarLoop]: trace histogram [12, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:04:57,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 10:04:57,981 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:04:57,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:04:57,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1315827482, now seen corresponding path program 29 times [2020-10-12 10:04:57,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:04:57,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959720206] [2020-10-12 10:04:57,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:04:57,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:04:57,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:04:58,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:00,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:00,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-12 10:05:00,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:05:00,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2399 [2020-10-12 10:05:00,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:00,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 10:05:00,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:05:00,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 10:05:00,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:00,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:05:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:00,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:00,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:00,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:05:00,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:00,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:00,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:00,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:00,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:00,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:00,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:00,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 10:05:00,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:00,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:00,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:00,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:00,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:00,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:05:00,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:00,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:00,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:00,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:00,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:00,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 10:05:00,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:00,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:00,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:00,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:00,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:00,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:05:00,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:00,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:00,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:00,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:00,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:00,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 10:05:00,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:00,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:00,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:00,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:00,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:00,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:05:00,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:00,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:00,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:00,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:00,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:00,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-12 10:05:00,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:00,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:00,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:00,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:00,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:00,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:05:00,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:00,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:00,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:00,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:00,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:00,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-12 10:05:00,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:00,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:00,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:00,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:00,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:00,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:05:00,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:00,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:00,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:00,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:00,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:00,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-12 10:05:00,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:00,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:00,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:00,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:00,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:00,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:05:00,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:00,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:00,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:00,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:00,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:00,538 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 12 proven. 78 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2020-10-12 10:05:00,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959720206] [2020-10-12 10:05:00,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:05:00,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 10:05:00,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343250553] [2020-10-12 10:05:00,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 10:05:00,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:05:00,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 10:05:00,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-12 10:05:00,540 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand 16 states. [2020-10-12 10:05:00,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:05:00,730 INFO L93 Difference]: Finished difference Result 139 states and 143 transitions. [2020-10-12 10:05:00,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 10:05:00,730 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 75 [2020-10-12 10:05:00,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:05:00,731 INFO L225 Difference]: With dead ends: 139 [2020-10-12 10:05:00,732 INFO L226 Difference]: Without dead ends: 80 [2020-10-12 10:05:00,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-12 10:05:00,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-12 10:05:00,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-12 10:05:00,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-12 10:05:00,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 81 transitions. [2020-10-12 10:05:00,744 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 81 transitions. Word has length 75 [2020-10-12 10:05:00,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:05:00,744 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 81 transitions. [2020-10-12 10:05:00,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 10:05:00,744 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 81 transitions. [2020-10-12 10:05:00,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-12 10:05:00,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:05:00,745 INFO L422 BasicCegarLoop]: trace histogram [13, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:05:00,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-12 10:05:00,746 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:05:00,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:05:00,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1924458742, now seen corresponding path program 30 times [2020-10-12 10:05:00,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:05:00,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617689723] [2020-10-12 10:05:00,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:05:00,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:00,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:00,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:03,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:03,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 10:05:03,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:05:03,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2745 [2020-10-12 10:05:03,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:03,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 10:05:03,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:05:03,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 10:05:03,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:03,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:05:03,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:03,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:03,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:03,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:05:03,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:03,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:03,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:03,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:03,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:03,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:03,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:03,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:05:03,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:03,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:03,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:03,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:03,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:03,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:03,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:03,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:03,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:03,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:03,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:03,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-12 10:05:03,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:03,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:03,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:03,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:03,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:03,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:03,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:03,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:03,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:03,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:03,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:03,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 10:05:03,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:03,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:03,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:03,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:03,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:03,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:03,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:03,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:03,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:03,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:03,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:03,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 10:05:03,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:03,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:03,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:03,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:03,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:03,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:05:03,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:03,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:03,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:03,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:03,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:03,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 10:05:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:03,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:03,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:03,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:03,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:03,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:03,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:03,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:03,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:03,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:03,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:03,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-12 10:05:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:03,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:03,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:03,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:03,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:03,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:05:03,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:03,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:03,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:03,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:03,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:03,679 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 12 proven. 91 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2020-10-12 10:05:03,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617689723] [2020-10-12 10:05:03,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:05:03,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 10:05:03,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519034213] [2020-10-12 10:05:03,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 10:05:03,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:05:03,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 10:05:03,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-12 10:05:03,682 INFO L87 Difference]: Start difference. First operand 79 states and 81 transitions. Second operand 17 states. [2020-10-12 10:05:03,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:05:03,893 INFO L93 Difference]: Finished difference Result 144 states and 150 transitions. [2020-10-12 10:05:03,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 10:05:03,894 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 76 [2020-10-12 10:05:03,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:05:03,895 INFO L225 Difference]: With dead ends: 144 [2020-10-12 10:05:03,895 INFO L226 Difference]: Without dead ends: 85 [2020-10-12 10:05:03,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-12 10:05:03,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-12 10:05:03,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2020-10-12 10:05:03,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-12 10:05:03,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2020-10-12 10:05:03,908 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 76 [2020-10-12 10:05:03,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:05:03,908 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2020-10-12 10:05:03,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 10:05:03,908 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2020-10-12 10:05:03,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 10:05:03,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:05:03,909 INFO L422 BasicCegarLoop]: trace histogram [14, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:05:03,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-12 10:05:03,909 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:05:03,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:05:03,910 INFO L82 PathProgramCache]: Analyzing trace with hash -859188183, now seen corresponding path program 31 times [2020-10-12 10:05:03,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:05:03,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486731020] [2020-10-12 10:05:03,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:05:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:03,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:03,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:05,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:08,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:08,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 10:05:08,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:05:08,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 10:05:08,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:08,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 10:05:08,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:05:08,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 10:05:08,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:09,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:05:09,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:09,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:09,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:09,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:05:09,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:09,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:09,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:09,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:09,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:09,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:09,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:09,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-12 10:05:09,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:09,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:09,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:09,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:09,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:09,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:09,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:09,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:09,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:09,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:09,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:09,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:05:09,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:09,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:09,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:09,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:09,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:09,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:09,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:09,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:09,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:09,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:09,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:09,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 10:05:09,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:09,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:09,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:09,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:09,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:09,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:09,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:09,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:09,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:09,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:09,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:09,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 10:05:09,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:09,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:09,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:09,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:09,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:09,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:09,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:09,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:09,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:09,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:09,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:09,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-12 10:05:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:09,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:09,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:09,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:09,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:09,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:09,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:09,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:09,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:09,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:09,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:09,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-12 10:05:09,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:09,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:09,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:09,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:09,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:09,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:09,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:09,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:09,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:09,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:09,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:09,378 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 12 proven. 85 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2020-10-12 10:05:09,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486731020] [2020-10-12 10:05:09,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:05:09,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 10:05:09,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412366947] [2020-10-12 10:05:09,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 10:05:09,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:05:09,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 10:05:09,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=420, Unknown=0, NotChecked=0, Total=462 [2020-10-12 10:05:09,380 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand 22 states. [2020-10-12 10:05:10,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:05:10,246 INFO L93 Difference]: Finished difference Result 113 states and 123 transitions. [2020-10-12 10:05:10,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 10:05:10,247 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 78 [2020-10-12 10:05:10,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:05:10,248 INFO L225 Difference]: With dead ends: 113 [2020-10-12 10:05:10,248 INFO L226 Difference]: Without dead ends: 111 [2020-10-12 10:05:10,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2020-10-12 10:05:10,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-12 10:05:10,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 107. [2020-10-12 10:05:10,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-12 10:05:10,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 116 transitions. [2020-10-12 10:05:10,267 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 116 transitions. Word has length 78 [2020-10-12 10:05:10,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:05:10,267 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 116 transitions. [2020-10-12 10:05:10,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 10:05:10,268 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 116 transitions. [2020-10-12 10:05:10,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 10:05:10,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:05:10,269 INFO L422 BasicCegarLoop]: trace histogram [14, 8, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:05:10,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-12 10:05:10,269 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:05:10,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:05:10,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1416450618, now seen corresponding path program 32 times [2020-10-12 10:05:10,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:05:10,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663148044] [2020-10-12 10:05:10,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:05:10,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:10,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:10,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:12,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:15,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:15,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-12 10:05:15,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:05:15,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 10:05:15,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:15,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 10:05:15,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:05:15,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 10:05:15,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:15,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:05:15,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:15,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:15,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:15,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:05:15,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:15,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:15,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:15,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:15,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:15,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:15,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:15,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-12 10:05:15,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:15,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:15,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:15,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:15,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:15,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:15,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:15,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:15,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:15,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:15,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:15,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 10:05:15,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:15,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:15,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:15,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:15,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:15,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:15,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:15,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:15,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:15,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:15,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:15,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 10:05:15,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:15,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:15,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:15,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:15,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:15,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:15,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:15,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:15,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:15,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:15,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:15,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 10:05:15,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:15,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:15,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:15,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:15,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:15,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:15,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:15,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:15,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:15,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:15,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:15,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-12 10:05:15,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:15,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:15,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:15,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:15,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:15,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:05:15,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:15,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:15,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:15,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:15,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:15,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-12 10:05:15,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:15,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:15,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:15,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:15,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:15,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:05:15,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:15,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:15,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:15,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:15,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:15,774 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 12 proven. 93 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2020-10-12 10:05:15,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663148044] [2020-10-12 10:05:15,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:05:15,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 10:05:15,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374223329] [2020-10-12 10:05:15,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 10:05:15,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:05:15,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 10:05:15,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2020-10-12 10:05:15,776 INFO L87 Difference]: Start difference. First operand 107 states and 116 transitions. Second operand 23 states. [2020-10-12 10:05:17,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:05:17,221 INFO L93 Difference]: Finished difference Result 143 states and 161 transitions. [2020-10-12 10:05:17,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-12 10:05:17,222 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 79 [2020-10-12 10:05:17,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:05:17,224 INFO L225 Difference]: With dead ends: 143 [2020-10-12 10:05:17,224 INFO L226 Difference]: Without dead ends: 141 [2020-10-12 10:05:17,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=147, Invalid=1493, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 10:05:17,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-12 10:05:17,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 108. [2020-10-12 10:05:17,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-12 10:05:17,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 118 transitions. [2020-10-12 10:05:17,245 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 118 transitions. Word has length 79 [2020-10-12 10:05:17,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:05:17,245 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 118 transitions. [2020-10-12 10:05:17,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 10:05:17,245 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 118 transitions. [2020-10-12 10:05:17,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 10:05:17,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:05:17,247 INFO L422 BasicCegarLoop]: trace histogram [14, 9, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:05:17,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-12 10:05:17,247 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:05:17,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:05:17,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1511716919, now seen corresponding path program 33 times [2020-10-12 10:05:17,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:05:17,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444739467] [2020-10-12 10:05:17,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:05:17,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:17,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:17,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:19,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:22,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:22,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-12 10:05:22,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:05:22,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 10:05:22,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:22,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 10:05:22,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:05:22,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 10:05:22,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:22,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:05:22,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:22,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:22,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:22,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:05:22,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:22,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:05:22,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:22,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:22,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:22,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:22,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:22,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-12 10:05:22,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:22,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:22,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:22,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:22,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:22,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:05:22,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:22,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:22,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:22,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:22,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:22,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-12 10:05:22,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:22,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:22,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:22,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:22,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:22,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:22,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:22,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:22,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:22,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:22,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:22,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 10:05:22,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:22,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:22,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:22,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:22,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:22,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:22,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:22,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:22,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:22,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:22,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:22,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 10:05:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:22,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:22,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:22,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:22,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:22,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:22,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:22,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:22,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:22,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:22,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:22,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-12 10:05:22,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:22,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:22,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:22,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:22,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:22,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:22,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:22,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:22,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:22,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:22,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:22,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-12 10:05:22,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:22,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:22,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:22,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:22,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:22,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:22,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:22,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:22,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:22,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:22,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:22,778 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 12 proven. 102 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2020-10-12 10:05:22,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [444739467] [2020-10-12 10:05:22,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:05:22,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-12 10:05:22,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776482723] [2020-10-12 10:05:22,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-12 10:05:22,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:05:22,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-12 10:05:22,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=503, Unknown=0, NotChecked=0, Total=552 [2020-10-12 10:05:22,781 INFO L87 Difference]: Start difference. First operand 108 states and 118 transitions. Second operand 24 states. [2020-10-12 10:05:23,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:05:23,951 INFO L93 Difference]: Finished difference Result 118 states and 128 transitions. [2020-10-12 10:05:23,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 10:05:23,951 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 80 [2020-10-12 10:05:23,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:05:23,953 INFO L225 Difference]: With dead ends: 118 [2020-10-12 10:05:23,953 INFO L226 Difference]: Without dead ends: 116 [2020-10-12 10:05:23,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=113, Invalid=1077, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 10:05:23,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-12 10:05:23,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 88. [2020-10-12 10:05:23,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-12 10:05:23,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 90 transitions. [2020-10-12 10:05:23,966 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 90 transitions. Word has length 80 [2020-10-12 10:05:23,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:05:23,966 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 90 transitions. [2020-10-12 10:05:23,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-12 10:05:23,966 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 90 transitions. [2020-10-12 10:05:23,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-12 10:05:23,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:05:23,967 INFO L422 BasicCegarLoop]: trace histogram [14, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:05:23,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-12 10:05:23,967 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:05:23,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:05:23,967 INFO L82 PathProgramCache]: Analyzing trace with hash 2073512840, now seen corresponding path program 34 times [2020-10-12 10:05:23,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:05:23,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947435051] [2020-10-12 10:05:23,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:05:23,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:23,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:24,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:27,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:27,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 10:05:27,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:05:27,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3726 [2020-10-12 10:05:27,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:27,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 10:05:27,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:05:27,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 10:05:27,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:27,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:05:27,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:27,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:27,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:27,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:05:27,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:27,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:27,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:27,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:27,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:27,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:27,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:27,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-12 10:05:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:27,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:27,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:27,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:27,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:27,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:27,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:27,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:27,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:27,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:27,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:27,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:05:27,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:27,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:27,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:27,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:27,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:27,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:05:27,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:27,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:27,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:27,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:27,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:27,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 10:05:27,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:27,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:27,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:27,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:27,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:27,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:05:27,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:27,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:27,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:27,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:27,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:27,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 10:05:27,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:27,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:27,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:27,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:27,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:27,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:05:27,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:27,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:27,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:27,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:27,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:27,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-12 10:05:27,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:27,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:27,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:27,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:27,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:27,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:05:27,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:27,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:27,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:27,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:27,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:27,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-12 10:05:27,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:27,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:27,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:27,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:27,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:27,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:27,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:27,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:27,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:27,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:27,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:27,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-12 10:05:27,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:27,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:27,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:27,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:27,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:27,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:05:27,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:27,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:27,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:27,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:27,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:27,903 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 14 proven. 105 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-10-12 10:05:27,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1947435051] [2020-10-12 10:05:27,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:05:27,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 10:05:27,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571651977] [2020-10-12 10:05:27,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 10:05:27,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:05:27,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 10:05:27,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-12 10:05:27,905 INFO L87 Difference]: Start difference. First operand 88 states and 90 transitions. Second operand 18 states. [2020-10-12 10:05:28,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:05:28,143 INFO L93 Difference]: Finished difference Result 157 states and 161 transitions. [2020-10-12 10:05:28,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 10:05:28,144 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 85 [2020-10-12 10:05:28,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:05:28,145 INFO L225 Difference]: With dead ends: 157 [2020-10-12 10:05:28,145 INFO L226 Difference]: Without dead ends: 90 [2020-10-12 10:05:28,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-12 10:05:28,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-12 10:05:28,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-12 10:05:28,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-12 10:05:28,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2020-10-12 10:05:28,159 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 85 [2020-10-12 10:05:28,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:05:28,159 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 91 transitions. [2020-10-12 10:05:28,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 10:05:28,159 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 91 transitions. [2020-10-12 10:05:28,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-12 10:05:28,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:05:28,160 INFO L422 BasicCegarLoop]: trace histogram [15, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:05:28,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-12 10:05:28,161 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:05:28,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:05:28,161 INFO L82 PathProgramCache]: Analyzing trace with hash 275379372, now seen corresponding path program 35 times [2020-10-12 10:05:28,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:05:28,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [86748742] [2020-10-12 10:05:28,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:05:28,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:28,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:28,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:32,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:32,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 10:05:32,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:05:32,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4053 [2020-10-12 10:05:32,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:32,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 10:05:32,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:05:32,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 10:05:32,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:32,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:05:32,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:32,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:32,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:32,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:05:32,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:32,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:32,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:32,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:32,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:32,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:32,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:32,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-12 10:05:32,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:32,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:32,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:32,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:32,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:32,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:05:32,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:32,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:32,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:32,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:32,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:32,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 10:05:32,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:32,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:32,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:32,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:32,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:32,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:05:32,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:32,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:32,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:32,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:32,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:32,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 10:05:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:32,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:32,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:32,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:32,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:32,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:05:32,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:32,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:32,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:32,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:32,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:32,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 10:05:32,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:32,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:32,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:32,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:32,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:32,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:05:32,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:32,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:32,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:32,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:32,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:32,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-12 10:05:32,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:32,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:32,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:32,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:32,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:32,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:32,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:32,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:32,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:32,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:32,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:32,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-12 10:05:32,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:32,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:32,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:32,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:32,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:32,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:05:32,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:32,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:32,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:32,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:32,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:32,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-12 10:05:32,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:32,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:32,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:32,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:32,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:32,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:05:32,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:32,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:32,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:32,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:32,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:32,432 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 14 proven. 120 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-10-12 10:05:32,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [86748742] [2020-10-12 10:05:32,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:05:32,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 10:05:32,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718326967] [2020-10-12 10:05:32,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 10:05:32,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:05:32,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 10:05:32,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-12 10:05:32,434 INFO L87 Difference]: Start difference. First operand 89 states and 91 transitions. Second operand 19 states. [2020-10-12 10:05:32,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:05:32,689 INFO L93 Difference]: Finished difference Result 162 states and 168 transitions. [2020-10-12 10:05:32,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 10:05:32,692 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 86 [2020-10-12 10:05:32,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:05:32,692 INFO L225 Difference]: With dead ends: 162 [2020-10-12 10:05:32,693 INFO L226 Difference]: Without dead ends: 95 [2020-10-12 10:05:32,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-12 10:05:32,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-12 10:05:32,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 91. [2020-10-12 10:05:32,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-12 10:05:32,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 93 transitions. [2020-10-12 10:05:32,706 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 93 transitions. Word has length 86 [2020-10-12 10:05:32,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:05:32,706 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 93 transitions. [2020-10-12 10:05:32,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 10:05:32,706 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 93 transitions. [2020-10-12 10:05:32,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-12 10:05:32,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:05:32,708 INFO L422 BasicCegarLoop]: trace histogram [16, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:05:32,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-12 10:05:32,708 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:05:32,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:05:32,708 INFO L82 PathProgramCache]: Analyzing trace with hash 809517771, now seen corresponding path program 36 times [2020-10-12 10:05:32,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:05:32,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797403626] [2020-10-12 10:05:32,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:05:32,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:32,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:32,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:35,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:37,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:37,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 10:05:37,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:05:37,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 10:05:37,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:37,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 10:05:37,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:05:37,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-12 10:05:37,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:38,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:05:38,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:38,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:38,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:38,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:05:38,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:38,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:38,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:38,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:38,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:38,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:38,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:38,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 10:05:38,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:38,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:38,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:38,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:38,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:38,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:05:38,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:38,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:38,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:38,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:38,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:38,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 10:05:38,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:38,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:38,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:38,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:38,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:38,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:05:38,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:38,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:38,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:38,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:38,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:38,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-12 10:05:38,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:38,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:38,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:38,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:38,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:38,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:05:38,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:38,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:38,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:38,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:38,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:38,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-12 10:05:38,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:38,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:38,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:38,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:38,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:38,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:05:38,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:38,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:38,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:38,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:38,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:38,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 10:05:38,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:38,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:38,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:38,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:38,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:38,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:05:38,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:38,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:38,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:38,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:38,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:38,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 10:05:38,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:38,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:38,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:38,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:38,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:38,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:05:38,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:38,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:38,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:38,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:38,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:38,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-12 10:05:38,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:38,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:38,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:38,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:38,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:38,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:05:38,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:38,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:38,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:38,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:38,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:38,350 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 14 proven. 113 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-12 10:05:38,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797403626] [2020-10-12 10:05:38,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:05:38,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-12 10:05:38,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470895545] [2020-10-12 10:05:38,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-12 10:05:38,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:05:38,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-12 10:05:38,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=506, Unknown=0, NotChecked=0, Total=552 [2020-10-12 10:05:38,352 INFO L87 Difference]: Start difference. First operand 91 states and 93 transitions. Second operand 24 states. [2020-10-12 10:05:39,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:05:39,505 INFO L93 Difference]: Finished difference Result 126 states and 137 transitions. [2020-10-12 10:05:39,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 10:05:39,505 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 88 [2020-10-12 10:05:39,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:05:39,506 INFO L225 Difference]: With dead ends: 126 [2020-10-12 10:05:39,506 INFO L226 Difference]: Without dead ends: 124 [2020-10-12 10:05:39,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=99, Invalid=1161, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 10:05:39,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-12 10:05:39,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 120. [2020-10-12 10:05:39,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-12 10:05:39,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 130 transitions. [2020-10-12 10:05:39,526 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 130 transitions. Word has length 88 [2020-10-12 10:05:39,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:05:39,526 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 130 transitions. [2020-10-12 10:05:39,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-12 10:05:39,526 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 130 transitions. [2020-10-12 10:05:39,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-12 10:05:39,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:05:39,528 INFO L422 BasicCegarLoop]: trace histogram [16, 9, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:05:39,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-12 10:05:39,528 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:05:39,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:05:39,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1617348712, now seen corresponding path program 37 times [2020-10-12 10:05:39,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:05:39,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079513117] [2020-10-12 10:05:39,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:05:39,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:39,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:39,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:42,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:44,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:44,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 10:05:44,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:05:44,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 10:05:44,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:44,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 10:05:44,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:05:44,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-12 10:05:44,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:45,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:05:45,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:45,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:45,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:45,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:05:45,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:45,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:45,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:45,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:45,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:45,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:45,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:45,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 10:05:45,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:45,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:45,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:45,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:45,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:45,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:45,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:45,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:45,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:45,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:45,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:45,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 10:05:45,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:45,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:45,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:45,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:45,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:45,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:45,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:45,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:45,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:45,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:45,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:45,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-12 10:05:45,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:45,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:45,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:45,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:45,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:45,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:45,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:45,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:45,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:45,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:45,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:45,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-12 10:05:45,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:45,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:45,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:45,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:45,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:45,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:45,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:45,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:45,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:45,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:45,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:45,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-12 10:05:45,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:45,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:45,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:45,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:45,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:45,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:45,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:45,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:45,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:45,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:45,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:45,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-12 10:05:45,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:45,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:45,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:45,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:45,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:45,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:45,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:45,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:45,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:45,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:45,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:45,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 10:05:45,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:45,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:45,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:45,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:45,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:45,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:45,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:45,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:45,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:45,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:45,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:45,184 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 14 proven. 122 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-12 10:05:45,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079513117] [2020-10-12 10:05:45,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:05:45,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-12 10:05:45,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931299986] [2020-10-12 10:05:45,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-12 10:05:45,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:05:45,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-12 10:05:45,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=551, Unknown=0, NotChecked=0, Total=600 [2020-10-12 10:05:45,186 INFO L87 Difference]: Start difference. First operand 120 states and 130 transitions. Second operand 25 states. [2020-10-12 10:05:46,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:05:46,608 INFO L93 Difference]: Finished difference Result 158 states and 178 transitions. [2020-10-12 10:05:46,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 10:05:46,609 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 89 [2020-10-12 10:05:46,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:05:46,611 INFO L225 Difference]: With dead ends: 158 [2020-10-12 10:05:46,611 INFO L226 Difference]: Without dead ends: 156 [2020-10-12 10:05:46,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=119, Invalid=1213, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 10:05:46,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-12 10:05:46,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 121. [2020-10-12 10:05:46,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-12 10:05:46,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 132 transitions. [2020-10-12 10:05:46,632 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 132 transitions. Word has length 89 [2020-10-12 10:05:46,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:05:46,633 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 132 transitions. [2020-10-12 10:05:46,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-12 10:05:46,633 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 132 transitions. [2020-10-12 10:05:46,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-12 10:05:46,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:05:46,634 INFO L422 BasicCegarLoop]: trace histogram [16, 10, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:05:46,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-12 10:05:46,635 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:05:46,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:05:46,635 INFO L82 PathProgramCache]: Analyzing trace with hash 890304107, now seen corresponding path program 38 times [2020-10-12 10:05:46,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:05:46,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770742548] [2020-10-12 10:05:46,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:05:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:46,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:46,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:50,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:51,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:51,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 10:05:51,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:05:51,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 10:05:51,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:51,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 10:05:51,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:05:51,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-12 10:05:51,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:52,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:05:52,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:52,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:52,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:52,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:05:52,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:52,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:52,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:52,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:52,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:52,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:52,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:52,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-12 10:05:52,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:52,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:52,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:52,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:52,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:52,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:52,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:52,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:52,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:52,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:52,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:52,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 10:05:52,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:52,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:52,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:52,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:52,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:52,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:05:52,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:52,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:52,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:52,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:52,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:52,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 10:05:52,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:52,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:52,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:52,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:52,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:52,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:52,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:52,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:52,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:52,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:52,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:52,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 10:05:52,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:52,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:52,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:52,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:52,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:52,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:52,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:52,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:52,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:52,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:52,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:52,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-12 10:05:52,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:52,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:52,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:52,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:52,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:52,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:52,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:52,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:52,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:52,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:52,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:52,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-12 10:05:52,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:52,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:52,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:52,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:52,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:52,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:52,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:52,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:52,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:52,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:52,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:52,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-12 10:05:52,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:52,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:52,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:52,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:52,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:52,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:52,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:52,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:05:52,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:52,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:05:52,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:52,340 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 14 proven. 132 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-12 10:05:52,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770742548] [2020-10-12 10:05:52,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:05:52,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-12 10:05:52,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430019845] [2020-10-12 10:05:52,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-12 10:05:52,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:05:52,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-12 10:05:52,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=597, Unknown=0, NotChecked=0, Total=650 [2020-10-12 10:05:52,342 INFO L87 Difference]: Start difference. First operand 121 states and 132 transitions. Second operand 26 states. [2020-10-12 10:05:53,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:05:53,948 INFO L93 Difference]: Finished difference Result 131 states and 142 transitions. [2020-10-12 10:05:53,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 10:05:53,956 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 90 [2020-10-12 10:05:53,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:05:53,958 INFO L225 Difference]: With dead ends: 131 [2020-10-12 10:05:53,958 INFO L226 Difference]: Without dead ends: 129 [2020-10-12 10:05:53,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=118, Invalid=1214, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 10:05:53,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-12 10:05:53,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 98. [2020-10-12 10:05:53,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-12 10:05:53,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 100 transitions. [2020-10-12 10:05:53,975 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 100 transitions. Word has length 90 [2020-10-12 10:05:53,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:05:53,975 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 100 transitions. [2020-10-12 10:05:53,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-12 10:05:53,976 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 100 transitions. [2020-10-12 10:05:53,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-12 10:05:53,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:05:53,976 INFO L422 BasicCegarLoop]: trace histogram [16, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:05:53,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-12 10:05:53,977 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:05:53,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:05:53,977 INFO L82 PathProgramCache]: Analyzing trace with hash -450395482, now seen corresponding path program 39 times [2020-10-12 10:05:53,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:05:53,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1094953064] [2020-10-12 10:05:53,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:05:53,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:53,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:54,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:58,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:58,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 10:05:58,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:05:58,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 10:05:58,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:58,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 10:05:58,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:05:58,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 10:05:58,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:59,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:05:59,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:59,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:59,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:59,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:05:59,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:59,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:05:59,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:59,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:59,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:05:59,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:59,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:59,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 10:05:59,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:59,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:59,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:59,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:59,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:59,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:05:59,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:59,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:59,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:59,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:59,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:59,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 10:05:59,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:59,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:59,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:59,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:59,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:59,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:05:59,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:59,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:59,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:59,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:59,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:59,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-12 10:05:59,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:59,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:59,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:59,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:59,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:59,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:05:59,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:59,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:59,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:59,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:59,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:59,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-12 10:05:59,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:59,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:59,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:59,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:59,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:59,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:05:59,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:59,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:59,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:59,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:59,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:59,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 10:05:59,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:59,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:59,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:59,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:59,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:59,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:05:59,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:59,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:59,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:59,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:59,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:59,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 10:05:59,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:59,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:59,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:59,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:59,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:59,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:05:59,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:59,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:59,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:59,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:59,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:59,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-12 10:05:59,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:59,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:59,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:59,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:59,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:59,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:05:59,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:59,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:59,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:59,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:59,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:05:59,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-12 10:05:59,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:59,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:59,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:05:59,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:05:59,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:05:59,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:05:59,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:05:59,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:05:59,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:05:59,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:05:59,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 10:05:59,241 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 16 proven. 136 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2020-10-12 10:05:59,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1094953064] [2020-10-12 10:05:59,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:05:59,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 10:05:59,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034993097] [2020-10-12 10:05:59,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 10:05:59,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:05:59,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 10:05:59,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-12 10:05:59,243 INFO L87 Difference]: Start difference. First operand 98 states and 100 transitions. Second operand 20 states. [2020-10-12 10:05:59,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:05:59,522 INFO L93 Difference]: Finished difference Result 175 states and 179 transitions. [2020-10-12 10:05:59,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 10:05:59,523 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 95 [2020-10-12 10:05:59,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:05:59,525 INFO L225 Difference]: With dead ends: 175 [2020-10-12 10:05:59,525 INFO L226 Difference]: Without dead ends: 100 [2020-10-12 10:05:59,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-12 10:05:59,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-12 10:05:59,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-12 10:05:59,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-12 10:05:59,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 101 transitions. [2020-10-12 10:05:59,539 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 101 transitions. Word has length 95 [2020-10-12 10:05:59,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:05:59,540 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 101 transitions. [2020-10-12 10:05:59,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 10:05:59,540 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 101 transitions. [2020-10-12 10:05:59,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-12 10:05:59,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:05:59,541 INFO L422 BasicCegarLoop]: trace histogram [17, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:05:59,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-12 10:05:59,541 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:05:59,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:05:59,542 INFO L82 PathProgramCache]: Analyzing trace with hash 94637770, now seen corresponding path program 40 times [2020-10-12 10:05:59,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:05:59,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911496658] [2020-10-12 10:05:59,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:05:59,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:05:59,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:05:59,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:04,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:04,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 10:06:04,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:06:04,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 10:06:04,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:04,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 10:06:04,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:06:04,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 10:06:04,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:04,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:06:04,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:04,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:04,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:04,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:06:04,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:04,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:04,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:04,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:04,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:06:04,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:04,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:04,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 10:06:04,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:04,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:04,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:04,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:04,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:04,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:04,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:04,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:04,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:04,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:04,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:04,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 10:06:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:04,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:04,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:04,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:04,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:04,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:04,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:04,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:04,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:04,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:04,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:04,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-12 10:06:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:04,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:04,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:04,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:04,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:04,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:04,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:04,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:04,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:04,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:04,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:04,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-12 10:06:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:04,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:04,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:04,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:04,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:04,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:04,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:04,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:04,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:04,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:04,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:04,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-12 10:06:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:04,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:04,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:04,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:04,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:04,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:04,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:04,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:04,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:04,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:04,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:04,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-12 10:06:04,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:04,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:04,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:04,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:04,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:04,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:04,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:04,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:04,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:04,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:04,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:04,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 10:06:04,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:04,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:04,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:04,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:04,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:04,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:04,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:04,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:04,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:04,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:04,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:04,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-12 10:06:04,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:04,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:04,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:04,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:04,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:04,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:04,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:04,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:04,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:04,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:04,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:04,833 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 16 proven. 153 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2020-10-12 10:06:04,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911496658] [2020-10-12 10:06:04,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:06:04,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 10:06:04,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086486619] [2020-10-12 10:06:04,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 10:06:04,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:06:04,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 10:06:04,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-12 10:06:04,835 INFO L87 Difference]: Start difference. First operand 99 states and 101 transitions. Second operand 21 states. [2020-10-12 10:06:05,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:06:05,140 INFO L93 Difference]: Finished difference Result 180 states and 186 transitions. [2020-10-12 10:06:05,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 10:06:05,141 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 96 [2020-10-12 10:06:05,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:06:05,142 INFO L225 Difference]: With dead ends: 180 [2020-10-12 10:06:05,142 INFO L226 Difference]: Without dead ends: 105 [2020-10-12 10:06:05,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-12 10:06:05,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-12 10:06:05,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 101. [2020-10-12 10:06:05,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-12 10:06:05,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2020-10-12 10:06:05,156 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 96 [2020-10-12 10:06:05,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:06:05,157 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2020-10-12 10:06:05,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 10:06:05,157 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2020-10-12 10:06:05,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-12 10:06:05,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:06:05,158 INFO L422 BasicCegarLoop]: trace histogram [18, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:06:05,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-12 10:06:05,158 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:06:05,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:06:05,159 INFO L82 PathProgramCache]: Analyzing trace with hash -230101527, now seen corresponding path program 41 times [2020-10-12 10:06:05,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:06:05,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807394406] [2020-10-12 10:06:05,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:06:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:05,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:05,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:09,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:10,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:10,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 10:06:10,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:06:10,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 10:06:10,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:10,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 10:06:10,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:06:10,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 10:06:10,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:10,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:06:10,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:10,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:10,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:10,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:06:10,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:10,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:10,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:10,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:10,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:06:10,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:10,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:10,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 10:06:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:10,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:10,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:10,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:10,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:10,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:06:10,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:10,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:06:10,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:06:10,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:06:10,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:10,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 10:06:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:10,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:10,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:10,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:10,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:10,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:06:10,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:10,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:06:10,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:06:10,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:06:10,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:10,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-12 10:06:10,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:10,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:10,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:10,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:10,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:10,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:06:10,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:10,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:06:10,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:06:10,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:06:10,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:10,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-12 10:06:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:10,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:10,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:10,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:10,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:10,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:06:10,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:10,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:06:10,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:06:10,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:06:10,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:10,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 10:06:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:10,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:10,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:10,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:10,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:10,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 10:06:10,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:10,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:06:10,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:06:10,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:06:10,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 10:06:10,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-12 10:06:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:10,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:10,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:10,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:10,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:10,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:06:10,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:10,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:06:10,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:06:10,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:06:10,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:10,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-12 10:06:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:10,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:10,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:10,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:10,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:10,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:06:10,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:10,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:06:10,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:06:10,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:06:10,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:10,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 10:06:10,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:10,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:10,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:10,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:10,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:10,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:06:10,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:10,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:06:10,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:06:10,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:06:10,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:10,991 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 16 proven. 145 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2020-10-12 10:06:10,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807394406] [2020-10-12 10:06:10,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:06:10,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-12 10:06:10,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8334266] [2020-10-12 10:06:10,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-12 10:06:10,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:06:10,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-12 10:06:10,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=600, Unknown=0, NotChecked=0, Total=650 [2020-10-12 10:06:10,994 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand 26 states. [2020-10-12 10:06:12,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:06:12,337 INFO L93 Difference]: Finished difference Result 139 states and 151 transitions. [2020-10-12 10:06:12,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 10:06:12,338 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 98 [2020-10-12 10:06:12,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:06:12,339 INFO L225 Difference]: With dead ends: 139 [2020-10-12 10:06:12,339 INFO L226 Difference]: Without dead ends: 137 [2020-10-12 10:06:12,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=107, Invalid=1375, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 10:06:12,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-12 10:06:12,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 133. [2020-10-12 10:06:12,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-12 10:06:12,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 144 transitions. [2020-10-12 10:06:12,366 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 144 transitions. Word has length 98 [2020-10-12 10:06:12,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:06:12,367 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 144 transitions. [2020-10-12 10:06:12,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-12 10:06:12,367 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 144 transitions. [2020-10-12 10:06:12,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-12 10:06:12,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:06:12,368 INFO L422 BasicCegarLoop]: trace histogram [18, 10, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:06:12,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-12 10:06:12,369 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:06:12,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:06:12,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1498030202, now seen corresponding path program 42 times [2020-10-12 10:06:12,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:06:12,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819670468] [2020-10-12 10:06:12,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:06:12,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:12,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:12,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:17,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:17,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 10:06:17,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:06:17,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 10:06:17,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:17,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 10:06:17,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:06:17,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 10:06:17,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:17,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:06:17,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:17,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:17,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:17,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:06:17,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:17,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:17,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:17,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:17,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:06:17,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:17,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:17,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:06:17,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:17,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:17,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:17,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:17,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:17,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:17,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:17,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:17,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:17,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:17,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:17,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 10:06:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:17,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:17,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:17,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:17,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:17,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:17,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:17,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:17,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:17,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:17,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:17,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 10:06:17,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:17,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:17,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:17,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:17,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:17,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:17,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:17,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:17,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:17,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:17,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:17,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-12 10:06:17,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:17,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:17,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:17,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:17,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:17,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:17,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:17,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:17,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:17,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:17,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:17,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-12 10:06:17,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:17,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:17,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:17,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:17,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:17,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:17,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:17,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:17,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:17,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:17,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:17,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-12 10:06:17,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:17,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:17,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:17,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:17,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:17,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:17,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:17,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:17,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:17,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:17,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:17,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-12 10:06:17,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:17,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:17,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:17,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:17,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:17,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:17,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:17,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:17,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:17,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:17,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:17,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-12 10:06:17,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:17,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:17,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:17,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:17,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:17,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:17,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:17,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:17,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:17,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:17,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:17,672 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 16 proven. 171 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2020-10-12 10:06:17,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819670468] [2020-10-12 10:06:17,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:06:17,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 10:06:17,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331499326] [2020-10-12 10:06:17,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 10:06:17,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:06:17,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 10:06:17,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-12 10:06:17,674 INFO L87 Difference]: Start difference. First operand 133 states and 144 transitions. Second operand 22 states. [2020-10-12 10:06:18,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:06:18,011 INFO L93 Difference]: Finished difference Result 246 states and 269 transitions. [2020-10-12 10:06:18,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 10:06:18,012 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 99 [2020-10-12 10:06:18,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:06:18,013 INFO L225 Difference]: With dead ends: 246 [2020-10-12 10:06:18,013 INFO L226 Difference]: Without dead ends: 138 [2020-10-12 10:06:18,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-12 10:06:18,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-12 10:06:18,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 134. [2020-10-12 10:06:18,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-12 10:06:18,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 145 transitions. [2020-10-12 10:06:18,039 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 145 transitions. Word has length 99 [2020-10-12 10:06:18,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:06:18,039 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 145 transitions. [2020-10-12 10:06:18,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 10:06:18,039 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 145 transitions. [2020-10-12 10:06:18,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-12 10:06:18,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:06:18,040 INFO L422 BasicCegarLoop]: trace histogram [19, 10, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:06:18,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-12 10:06:18,041 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:06:18,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:06:18,041 INFO L82 PathProgramCache]: Analyzing trace with hash -536364630, now seen corresponding path program 43 times [2020-10-12 10:06:18,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:06:18,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570269764] [2020-10-12 10:06:18,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:06:18,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:18,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:18,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:23,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:23,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 10:06:23,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:06:23,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 10:06:23,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:23,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 10:06:23,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:06:23,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 10:06:23,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:23,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:06:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:23,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:23,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:23,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:06:23,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:23,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:23,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:23,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:23,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:06:23,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:23,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:23,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 10:06:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:23,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:23,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:23,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:23,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:23,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:23,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:23,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:23,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:23,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:23,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:23,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 10:06:23,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:23,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:23,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:23,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:23,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:23,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:23,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:23,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:23,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:23,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:23,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:23,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 10:06:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:23,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:23,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:23,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:23,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:23,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:23,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:23,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:23,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:23,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:23,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:23,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-12 10:06:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:23,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:23,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:23,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:23,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:23,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:23,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:23,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:23,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:23,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:23,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:23,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-12 10:06:23,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:23,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:23,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:23,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:23,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:23,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:23,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:23,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:23,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:23,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:23,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:23,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-12 10:06:23,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:23,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:23,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:23,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:23,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:23,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:23,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:23,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:23,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:23,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:23,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:23,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-12 10:06:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:23,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:23,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:23,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:23,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:23,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:23,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:23,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:23,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:23,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:23,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:23,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-12 10:06:23,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:23,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:23,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:23,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:23,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:23,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:06:23,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:23,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:23,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:23,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:23,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:23,382 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 16 proven. 190 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2020-10-12 10:06:23,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570269764] [2020-10-12 10:06:23,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:06:23,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 10:06:23,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574119090] [2020-10-12 10:06:23,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 10:06:23,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:06:23,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 10:06:23,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-12 10:06:23,384 INFO L87 Difference]: Start difference. First operand 134 states and 145 transitions. Second operand 23 states. [2020-10-12 10:06:23,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:06:23,662 INFO L93 Difference]: Finished difference Result 219 states and 235 transitions. [2020-10-12 10:06:23,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 10:06:23,664 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 100 [2020-10-12 10:06:23,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:06:23,665 INFO L225 Difference]: With dead ends: 219 [2020-10-12 10:06:23,665 INFO L226 Difference]: Without dead ends: 111 [2020-10-12 10:06:23,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-12 10:06:23,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-12 10:06:23,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 104. [2020-10-12 10:06:23,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-12 10:06:23,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 106 transitions. [2020-10-12 10:06:23,690 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 106 transitions. Word has length 100 [2020-10-12 10:06:23,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:06:23,690 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 106 transitions. [2020-10-12 10:06:23,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 10:06:23,690 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 106 transitions. [2020-10-12 10:06:23,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-12 10:06:23,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:06:23,692 INFO L422 BasicCegarLoop]: trace histogram [20, 10, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:06:23,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-12 10:06:23,692 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:06:23,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:06:23,693 INFO L82 PathProgramCache]: Analyzing trace with hash -789502970, now seen corresponding path program 44 times [2020-10-12 10:06:23,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:06:23,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595332344] [2020-10-12 10:06:23,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:06:23,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:23,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:23,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:28,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:28,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-12 10:06:28,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:06:28,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 10:06:28,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:28,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 10:06:28,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:06:28,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 10:06:28,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:29,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:06:29,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:29,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:29,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:29,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:06:29,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:29,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:29,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:29,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:29,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:06:29,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:29,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:29,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-12 10:06:29,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:29,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:29,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:29,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:29,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:29,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:29,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:29,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:29,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:29,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:29,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:29,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 10:06:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:29,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:29,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:29,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:29,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:29,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:29,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:29,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:29,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:29,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:29,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:29,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 10:06:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:29,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:29,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:29,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:29,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:29,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:29,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:29,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:29,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:29,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:29,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:29,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-12 10:06:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:29,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:29,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:29,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:29,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:29,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:29,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:29,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:29,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:29,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:29,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:29,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-12 10:06:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:29,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:29,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:29,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:29,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:29,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:29,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:29,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:29,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:29,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:29,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:29,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-12 10:06:29,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:29,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:29,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:29,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:29,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:29,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:29,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:29,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:29,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:29,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:29,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:29,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 10:06:29,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:29,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:29,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:29,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:29,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:29,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:29,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:29,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:29,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:29,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:29,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:29,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-12 10:06:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:29,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:29,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:29,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:29,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:29,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:29,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:29,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:29,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:29,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:29,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:29,093 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 16 proven. 210 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2020-10-12 10:06:29,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595332344] [2020-10-12 10:06:29,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:06:29,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-12 10:06:29,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356065053] [2020-10-12 10:06:29,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-12 10:06:29,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:06:29,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-12 10:06:29,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-12 10:06:29,096 INFO L87 Difference]: Start difference. First operand 104 states and 106 transitions. Second operand 24 states. [2020-10-12 10:06:29,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:06:29,413 INFO L93 Difference]: Finished difference Result 189 states and 195 transitions. [2020-10-12 10:06:29,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 10:06:29,414 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 101 [2020-10-12 10:06:29,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:06:29,415 INFO L225 Difference]: With dead ends: 189 [2020-10-12 10:06:29,415 INFO L226 Difference]: Without dead ends: 112 [2020-10-12 10:06:29,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-12 10:06:29,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-12 10:06:29,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 105. [2020-10-12 10:06:29,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-12 10:06:29,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2020-10-12 10:06:29,451 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 101 [2020-10-12 10:06:29,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:06:29,452 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 107 transitions. [2020-10-12 10:06:29,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-12 10:06:29,452 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 107 transitions. [2020-10-12 10:06:29,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 10:06:29,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:06:29,454 INFO L422 BasicCegarLoop]: trace histogram [21, 10, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:06:29,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-12 10:06:29,454 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:06:29,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:06:29,455 INFO L82 PathProgramCache]: Analyzing trace with hash -46856918, now seen corresponding path program 45 times [2020-10-12 10:06:29,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:06:29,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682099680] [2020-10-12 10:06:29,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:06:29,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:29,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:29,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:34,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:34,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 10:06:34,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:06:34,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 10:06:34,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:34,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 10:06:34,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:06:34,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 10:06:34,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:34,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:06:34,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:34,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:34,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:34,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:06:34,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:34,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:34,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:34,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:34,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:06:34,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:34,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:34,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 10:06:34,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:34,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:34,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:34,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:34,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:34,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:34,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:34,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:34,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:34,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:34,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:34,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-12 10:06:34,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:34,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:34,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:34,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:34,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:34,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:34,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:34,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:34,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:34,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:34,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:34,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-12 10:06:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:34,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:34,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:34,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:34,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:34,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:34,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:34,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:34,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:34,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:34,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:34,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 10:06:34,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:34,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:34,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:34,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:34,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:34,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:34,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:34,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:34,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:34,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:34,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:34,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 10:06:34,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:34,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:34,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:34,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:34,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:34,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:34,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:34,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:34,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:34,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:34,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:34,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-12 10:06:34,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:34,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:34,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:34,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:34,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:34,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:34,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:34,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:34,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:34,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:34,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:34,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-12 10:06:34,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:34,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:34,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:34,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:34,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:34,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:34,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:34,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:34,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:34,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:34,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:34,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-12 10:06:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:34,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:34,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:34,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:34,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:34,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:34,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:34,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:34,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:34,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:34,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:34,872 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 16 proven. 231 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2020-10-12 10:06:34,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682099680] [2020-10-12 10:06:34,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:06:34,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-12 10:06:34,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636299346] [2020-10-12 10:06:34,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-12 10:06:34,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:06:34,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-12 10:06:34,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-12 10:06:34,874 INFO L87 Difference]: Start difference. First operand 105 states and 107 transitions. Second operand 25 states. [2020-10-12 10:06:35,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:06:35,183 INFO L93 Difference]: Finished difference Result 194 states and 202 transitions. [2020-10-12 10:06:35,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 10:06:35,184 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 102 [2020-10-12 10:06:35,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:06:35,185 INFO L225 Difference]: With dead ends: 194 [2020-10-12 10:06:35,185 INFO L226 Difference]: Without dead ends: 117 [2020-10-12 10:06:35,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-12 10:06:35,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-12 10:06:35,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 107. [2020-10-12 10:06:35,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-12 10:06:35,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 109 transitions. [2020-10-12 10:06:35,201 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 109 transitions. Word has length 102 [2020-10-12 10:06:35,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:06:35,201 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 109 transitions. [2020-10-12 10:06:35,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-12 10:06:35,202 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 109 transitions. [2020-10-12 10:06:35,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-12 10:06:35,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:06:35,202 INFO L422 BasicCegarLoop]: trace histogram [22, 11, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:06:35,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-12 10:06:35,203 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:06:35,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:06:35,203 INFO L82 PathProgramCache]: Analyzing trace with hash 605870217, now seen corresponding path program 46 times [2020-10-12 10:06:35,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:06:35,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [609010217] [2020-10-12 10:06:35,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:06:35,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:35,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:35,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:40,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:40,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 10:06:40,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:06:40,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 10:06:40,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:40,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 10:06:40,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:06:40,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 10:06:40,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:40,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:06:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:40,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:40,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:40,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:06:40,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:40,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:40,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:40,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:40,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:06:40,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:40,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:06:40,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 10:06:40,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:40,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:40,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:40,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:40,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:40,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:40,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:40,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:40,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:40,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:40,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:06:40,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 10:06:40,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:40,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:40,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:40,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:40,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:40,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:40,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:40,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:40,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:40,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:40,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:06:40,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 10:06:40,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:40,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:40,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:40,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:40,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:40,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:40,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:40,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:40,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:40,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:40,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:06:40,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-12 10:06:40,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:40,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:40,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:40,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:40,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:40,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:40,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:40,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:40,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:40,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:40,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:06:40,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-12 10:06:40,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:40,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:40,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:40,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:40,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:40,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:40,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:40,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:40,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:40,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:40,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:06:40,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-12 10:06:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:40,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:40,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:40,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:40,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:40,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 10:06:40,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:40,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:40,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:40,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:40,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:06:40,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-12 10:06:40,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:40,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:40,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:40,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:40,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:40,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:40,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:40,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:40,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:40,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:40,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:06:40,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-12 10:06:40,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:40,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:40,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:40,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:40,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:40,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:40,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:40,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:40,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:40,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:40,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:06:40,782 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 16 proven. 253 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2020-10-12 10:06:40,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [609010217] [2020-10-12 10:06:40,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:06:40,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-12 10:06:40,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618167783] [2020-10-12 10:06:40,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-12 10:06:40,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:06:40,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-12 10:06:40,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-12 10:06:40,786 INFO L87 Difference]: Start difference. First operand 107 states and 109 transitions. Second operand 26 states. [2020-10-12 10:06:41,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:06:41,163 INFO L93 Difference]: Finished difference Result 196 states and 203 transitions. [2020-10-12 10:06:41,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 10:06:41,164 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 104 [2020-10-12 10:06:41,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:06:41,164 INFO L225 Difference]: With dead ends: 196 [2020-10-12 10:06:41,165 INFO L226 Difference]: Without dead ends: 118 [2020-10-12 10:06:41,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-12 10:06:41,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-12 10:06:41,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 108. [2020-10-12 10:06:41,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-12 10:06:41,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 110 transitions. [2020-10-12 10:06:41,185 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 110 transitions. Word has length 104 [2020-10-12 10:06:41,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:06:41,186 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 110 transitions. [2020-10-12 10:06:41,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-12 10:06:41,186 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 110 transitions. [2020-10-12 10:06:41,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-12 10:06:41,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:06:41,187 INFO L422 BasicCegarLoop]: trace histogram [23, 11, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:06:41,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-12 10:06:41,188 INFO L427 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:06:41,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:06:41,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1397863653, now seen corresponding path program 47 times [2020-10-12 10:06:41,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:06:41,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680594775] [2020-10-12 10:06:41,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:06:41,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:41,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:41,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:46,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:46,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-12 10:06:46,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:06:46,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 10:06:46,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:46,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 10:06:46,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:06:46,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 10:06:46,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:46,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:06:46,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:46,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:46,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:46,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:06:46,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:46,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:46,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:46,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:46,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:06:46,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:46,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:46,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 10:06:46,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:46,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:46,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:46,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:46,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:46,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:46,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:46,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:46,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:46,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:46,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:46,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-12 10:06:46,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:46,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:46,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:46,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:46,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:46,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:46,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:46,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:46,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:46,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:46,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:46,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-12 10:06:46,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:46,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:46,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:46,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:46,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:46,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:46,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:46,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:46,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:46,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:46,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:46,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 10:06:46,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:46,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:46,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:46,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:46,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:46,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:46,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:46,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:46,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:46,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:46,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:46,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-12 10:06:46,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:46,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:46,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:46,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:46,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:46,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:46,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:46,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:46,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:46,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:46,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:46,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-12 10:06:46,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:46,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:46,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:46,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:46,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:46,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:46,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:46,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:46,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:46,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:46,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:46,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 10:06:46,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:46,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:46,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:46,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:46,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:46,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:46,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:46,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:46,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:46,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:46,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:46,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-12 10:06:46,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:46,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:46,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:46,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:46,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:46,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:46,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:46,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:46,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:46,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:46,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:46,649 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 16 proven. 276 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2020-10-12 10:06:46,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680594775] [2020-10-12 10:06:46,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:06:46,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-12 10:06:46,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617393715] [2020-10-12 10:06:46,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-12 10:06:46,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:06:46,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-12 10:06:46,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-12 10:06:46,650 INFO L87 Difference]: Start difference. First operand 108 states and 110 transitions. Second operand 27 states. [2020-10-12 10:06:47,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:06:47,077 INFO L93 Difference]: Finished difference Result 201 states and 210 transitions. [2020-10-12 10:06:47,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 10:06:47,078 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 105 [2020-10-12 10:06:47,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:06:47,079 INFO L225 Difference]: With dead ends: 201 [2020-10-12 10:06:47,079 INFO L226 Difference]: Without dead ends: 123 [2020-10-12 10:06:47,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-12 10:06:47,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-12 10:06:47,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 110. [2020-10-12 10:06:47,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-12 10:06:47,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 112 transitions. [2020-10-12 10:06:47,098 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 112 transitions. Word has length 105 [2020-10-12 10:06:47,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:06:47,098 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 112 transitions. [2020-10-12 10:06:47,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-12 10:06:47,098 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 112 transitions. [2020-10-12 10:06:47,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-12 10:06:47,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:06:47,099 INFO L422 BasicCegarLoop]: trace histogram [24, 12, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:06:47,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-12 10:06:47,100 INFO L427 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:06:47,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:06:47,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1674236570, now seen corresponding path program 48 times [2020-10-12 10:06:47,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:06:47,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033571910] [2020-10-12 10:06:47,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:06:47,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:47,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:47,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:52,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:52,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-12 10:06:52,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:06:52,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 10:06:52,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:52,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 10:06:52,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:06:52,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 10:06:52,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:52,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:06:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:52,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:52,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:52,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:06:52,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:52,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:52,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:52,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:52,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:06:52,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:52,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:52,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 10:06:52,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:52,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:52,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:52,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:52,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:52,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:52,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:52,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:52,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:52,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:52,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:52,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 10:06:52,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:52,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:52,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:52,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:52,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:52,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:52,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:52,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:52,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:52,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:52,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:52,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-12 10:06:52,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:52,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:52,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:52,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:52,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:52,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:52,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:52,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:52,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:52,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:52,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:52,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-12 10:06:52,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:52,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:52,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:52,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:52,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:52,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:52,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:52,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:52,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:52,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:52,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:52,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-12 10:06:52,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:52,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:52,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:52,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:52,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:52,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:52,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:52,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:52,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:52,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:52,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:52,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-12 10:06:52,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:52,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:52,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:52,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:52,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:52,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:52,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:52,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:52,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:52,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:52,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:52,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-12 10:06:52,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:52,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:52,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:52,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:52,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:52,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:52,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:52,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:52,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:52,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:52,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:52,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-12 10:06:52,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:52,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:52,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:52,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:52,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:52,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:52,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:52,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:52,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:52,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:52,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:52,603 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 16 proven. 300 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2020-10-12 10:06:52,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2033571910] [2020-10-12 10:06:52,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:06:52,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-12 10:06:52,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171731581] [2020-10-12 10:06:52,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-12 10:06:52,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:06:52,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-12 10:06:52,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-12 10:06:52,605 INFO L87 Difference]: Start difference. First operand 110 states and 112 transitions. Second operand 28 states. [2020-10-12 10:06:53,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:06:53,039 INFO L93 Difference]: Finished difference Result 203 states and 211 transitions. [2020-10-12 10:06:53,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-12 10:06:53,040 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 107 [2020-10-12 10:06:53,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:06:53,041 INFO L225 Difference]: With dead ends: 203 [2020-10-12 10:06:53,041 INFO L226 Difference]: Without dead ends: 124 [2020-10-12 10:06:53,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-12 10:06:53,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-12 10:06:53,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 111. [2020-10-12 10:06:53,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-12 10:06:53,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 113 transitions. [2020-10-12 10:06:53,056 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 113 transitions. Word has length 107 [2020-10-12 10:06:53,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:06:53,056 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 113 transitions. [2020-10-12 10:06:53,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-12 10:06:53,056 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 113 transitions. [2020-10-12 10:06:53,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-12 10:06:53,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:06:53,057 INFO L422 BasicCegarLoop]: trace histogram [25, 12, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:06:53,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-12 10:06:53,057 INFO L427 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:06:53,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:06:53,057 INFO L82 PathProgramCache]: Analyzing trace with hash 346858378, now seen corresponding path program 49 times [2020-10-12 10:06:53,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:06:53,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994994653] [2020-10-12 10:06:53,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:06:53,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:53,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:53,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:58,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:58,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 10:06:58,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:06:58,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 10:06:58,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:58,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 10:06:58,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:06:58,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 10:06:58,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:58,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:06:58,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:58,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:58,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:58,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:06:58,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:58,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:58,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:58,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:58,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:06:58,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:58,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:58,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 10:06:58,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:58,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:58,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:58,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:58,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:58,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:58,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:58,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:58,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:58,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:58,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:58,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 10:06:58,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:58,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:58,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:58,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:58,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:58,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:58,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:58,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:58,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:58,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:58,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:58,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-12 10:06:58,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:58,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:58,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:58,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:58,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:58,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:58,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:58,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:58,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:58,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:58,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:58,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-12 10:06:58,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:58,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:58,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:58,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:58,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:58,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:58,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:58,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:58,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:58,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:58,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:58,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-12 10:06:58,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:58,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:58,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:58,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:58,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:58,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:58,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:58,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:58,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:58,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:58,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:58,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 10:06:58,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:58,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:58,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:58,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:58,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:58,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:58,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:58,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:58,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:58,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:58,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:58,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-12 10:06:58,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:58,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:58,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:58,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:58,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:58,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:06:58,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:58,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:58,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:58,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:58,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:58,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-12 10:06:58,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:58,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:58,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:06:58,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:06:58,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:06:58,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:06:58,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:06:58,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:06:58,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:06:58,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:06:58,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:06:58,603 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 16 proven. 325 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2020-10-12 10:06:58,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994994653] [2020-10-12 10:06:58,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:06:58,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-12 10:06:58,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099620669] [2020-10-12 10:06:58,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-12 10:06:58,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:06:58,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-12 10:06:58,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-12 10:06:58,605 INFO L87 Difference]: Start difference. First operand 111 states and 113 transitions. Second operand 29 states. [2020-10-12 10:06:58,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:06:58,995 INFO L93 Difference]: Finished difference Result 208 states and 218 transitions. [2020-10-12 10:06:58,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-12 10:06:58,996 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 108 [2020-10-12 10:06:58,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:06:58,997 INFO L225 Difference]: With dead ends: 208 [2020-10-12 10:06:58,997 INFO L226 Difference]: Without dead ends: 129 [2020-10-12 10:06:58,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-12 10:06:58,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-12 10:06:59,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 113. [2020-10-12 10:06:59,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-12 10:06:59,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 115 transitions. [2020-10-12 10:06:59,017 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 115 transitions. Word has length 108 [2020-10-12 10:06:59,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:06:59,018 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 115 transitions. [2020-10-12 10:06:59,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-12 10:06:59,018 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 115 transitions. [2020-10-12 10:06:59,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 10:06:59,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:06:59,019 INFO L422 BasicCegarLoop]: trace histogram [26, 13, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:06:59,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-12 10:06:59,020 INFO L427 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:06:59,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:06:59,020 INFO L82 PathProgramCache]: Analyzing trace with hash 154884905, now seen corresponding path program 50 times [2020-10-12 10:06:59,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:06:59,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26251609] [2020-10-12 10:06:59,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:06:59,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:06:59,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:06:59,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:04,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:04,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-12 10:07:04,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:07:04,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 10:07:04,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:04,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 10:07:04,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:07:04,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 10:07:04,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:04,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:07:04,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:04,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:04,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:04,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:07:04,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:04,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:07:04,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:04,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:04,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:07:04,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:04,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:04,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-12 10:07:04,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:04,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:04,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:04,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:04,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:04,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:04,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:04,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:04,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:04,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:04,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:04,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-12 10:07:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:04,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:04,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:04,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:04,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:04,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:04,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:04,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:04,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:04,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:04,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:04,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-12 10:07:04,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:04,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:04,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:04,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:04,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:04,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:04,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:04,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:04,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:04,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:04,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:04,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-12 10:07:04,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:04,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:04,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:04,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:04,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:04,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:04,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:04,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:04,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:04,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:04,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:04,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 10:07:04,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:04,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:04,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:04,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:04,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:04,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:04,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:04,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:04,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:04,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:04,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:04,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-12 10:07:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:04,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:04,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:04,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:04,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:04,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:04,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:04,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:04,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:04,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:04,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:04,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-12 10:07:04,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:04,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:04,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:04,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:04,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:04,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:04,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:04,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:04,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:04,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:04,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:04,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-12 10:07:04,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:04,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:04,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:04,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:04,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:04,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:04,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:04,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:04,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:04,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:04,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:04,568 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 16 proven. 351 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-12 10:07:04,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26251609] [2020-10-12 10:07:04,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:07:04,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-12 10:07:04,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476496529] [2020-10-12 10:07:04,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-12 10:07:04,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:07:04,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-12 10:07:04,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-12 10:07:04,569 INFO L87 Difference]: Start difference. First operand 113 states and 115 transitions. Second operand 30 states. [2020-10-12 10:07:04,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:07:04,957 INFO L93 Difference]: Finished difference Result 210 states and 219 transitions. [2020-10-12 10:07:04,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-12 10:07:04,958 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 110 [2020-10-12 10:07:04,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:07:04,960 INFO L225 Difference]: With dead ends: 210 [2020-10-12 10:07:04,960 INFO L226 Difference]: Without dead ends: 130 [2020-10-12 10:07:04,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-12 10:07:04,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-12 10:07:04,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 114. [2020-10-12 10:07:04,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-12 10:07:04,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 116 transitions. [2020-10-12 10:07:04,981 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 116 transitions. Word has length 110 [2020-10-12 10:07:04,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:07:04,982 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 116 transitions. [2020-10-12 10:07:04,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-12 10:07:04,982 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 116 transitions. [2020-10-12 10:07:04,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-12 10:07:04,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:07:04,983 INFO L422 BasicCegarLoop]: trace histogram [27, 13, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:07:04,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-12 10:07:04,983 INFO L427 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:07:04,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:07:04,984 INFO L82 PathProgramCache]: Analyzing trace with hash -552041851, now seen corresponding path program 51 times [2020-10-12 10:07:04,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:07:04,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [865741159] [2020-10-12 10:07:04,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:07:05,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:05,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:05,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:10,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:10,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-12 10:07:10,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:07:10,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 10:07:10,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:10,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 10:07:10,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:07:10,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 10:07:10,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:10,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:07:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:10,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:10,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:10,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:07:10,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:10,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:07:10,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:10,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:10,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:07:10,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:10,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:10,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 10:07:10,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:10,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:10,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:10,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:10,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:10,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:07:10,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:10,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:10,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:10,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:10,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:10,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 10:07:10,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:10,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:10,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:10,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:10,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:10,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:07:10,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:10,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:10,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:10,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:10,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:10,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-12 10:07:10,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:10,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:10,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:10,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:10,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:10,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:07:10,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:10,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:10,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:10,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:10,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:10,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-12 10:07:10,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:10,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:10,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:10,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:10,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:10,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:07:10,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:10,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:10,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:10,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:10,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:10,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-12 10:07:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:10,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:10,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:10,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:10,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:10,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:07:10,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:10,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:10,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:10,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:10,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:10,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-12 10:07:10,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:10,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:10,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:10,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:10,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:10,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:07:10,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:10,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:10,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:10,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:10,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:10,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-12 10:07:10,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:10,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:10,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:10,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:10,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:10,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:07:10,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:10,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:10,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:10,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:10,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:10,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-12 10:07:10,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:10,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:10,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:10,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:10,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:10,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:07:10,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:10,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:10,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:10,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:10,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:10,610 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 16 proven. 378 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-12 10:07:10,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [865741159] [2020-10-12 10:07:10,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:07:10,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-12 10:07:10,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649789260] [2020-10-12 10:07:10,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-12 10:07:10,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:07:10,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-12 10:07:10,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-12 10:07:10,612 INFO L87 Difference]: Start difference. First operand 114 states and 116 transitions. Second operand 31 states. [2020-10-12 10:07:11,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:07:11,151 INFO L93 Difference]: Finished difference Result 215 states and 226 transitions. [2020-10-12 10:07:11,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-12 10:07:11,152 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 111 [2020-10-12 10:07:11,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:07:11,153 INFO L225 Difference]: With dead ends: 215 [2020-10-12 10:07:11,153 INFO L226 Difference]: Without dead ends: 135 [2020-10-12 10:07:11,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-12 10:07:11,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-12 10:07:11,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 116. [2020-10-12 10:07:11,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-12 10:07:11,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 118 transitions. [2020-10-12 10:07:11,176 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 118 transitions. Word has length 111 [2020-10-12 10:07:11,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:07:11,177 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 118 transitions. [2020-10-12 10:07:11,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-12 10:07:11,177 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 118 transitions. [2020-10-12 10:07:11,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-12 10:07:11,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:07:11,178 INFO L422 BasicCegarLoop]: trace histogram [28, 14, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:07:11,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-12 10:07:11,178 INFO L427 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:07:11,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:07:11,178 INFO L82 PathProgramCache]: Analyzing trace with hash 654941894, now seen corresponding path program 52 times [2020-10-12 10:07:11,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:07:11,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703287554] [2020-10-12 10:07:11,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:07:11,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:11,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:11,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:16,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:16,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-12 10:07:16,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:07:16,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 10:07:16,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:16,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 10:07:16,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:07:16,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 10:07:16,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:16,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:07:16,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:16,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:16,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:16,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:07:16,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:16,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:07:16,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:16,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:16,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:07:16,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:16,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:16,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 10:07:16,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:16,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:16,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:16,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:16,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:16,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:16,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:16,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:16,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:16,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:16,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:16,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-12 10:07:16,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:16,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:16,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:16,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:16,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:16,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:16,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:16,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:16,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:16,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:16,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:16,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-12 10:07:16,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:16,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:16,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:16,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:16,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:16,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:16,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:16,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:16,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:16,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:16,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:16,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-12 10:07:16,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:16,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:16,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:16,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:16,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:16,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:16,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:16,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:16,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:16,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:16,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:16,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-12 10:07:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:16,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:16,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:16,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:16,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:16,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:16,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:16,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:16,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:16,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:16,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:16,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-12 10:07:16,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:16,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:16,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:16,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:16,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:16,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:16,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:16,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:16,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:16,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:16,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:16,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 10:07:16,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:16,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:16,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:16,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:16,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:16,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:16,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:16,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:16,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:16,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:16,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:16,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-12 10:07:16,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:16,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:16,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:16,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:16,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:16,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:16,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:16,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:16,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:16,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:16,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:16,808 INFO L134 CoverageAnalysis]: Checked inductivity of 739 backedges. 16 proven. 406 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2020-10-12 10:07:16,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703287554] [2020-10-12 10:07:16,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:07:16,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-12 10:07:16,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591020611] [2020-10-12 10:07:16,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-12 10:07:16,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:07:16,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-12 10:07:16,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-12 10:07:16,810 INFO L87 Difference]: Start difference. First operand 116 states and 118 transitions. Second operand 32 states. [2020-10-12 10:07:17,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:07:17,326 INFO L93 Difference]: Finished difference Result 217 states and 227 transitions. [2020-10-12 10:07:17,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-12 10:07:17,327 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 113 [2020-10-12 10:07:17,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:07:17,328 INFO L225 Difference]: With dead ends: 217 [2020-10-12 10:07:17,328 INFO L226 Difference]: Without dead ends: 136 [2020-10-12 10:07:17,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-12 10:07:17,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-12 10:07:17,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 117. [2020-10-12 10:07:17,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-12 10:07:17,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 119 transitions. [2020-10-12 10:07:17,347 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 119 transitions. Word has length 113 [2020-10-12 10:07:17,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:07:17,347 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 119 transitions. [2020-10-12 10:07:17,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-12 10:07:17,347 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 119 transitions. [2020-10-12 10:07:17,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 10:07:17,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:07:17,348 INFO L422 BasicCegarLoop]: trace histogram [29, 14, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:07:17,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-12 10:07:17,348 INFO L427 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:07:17,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:07:17,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1175393814, now seen corresponding path program 53 times [2020-10-12 10:07:17,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:07:17,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506199344] [2020-10-12 10:07:17,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:07:17,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:17,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:17,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:22,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:22,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-12 10:07:22,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:07:22,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 10:07:22,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:22,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 10:07:22,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:07:22,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 10:07:22,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:22,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:07:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:22,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:22,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:22,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:07:22,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:22,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:07:22,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:22,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:22,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:07:22,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:22,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:22,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 10:07:22,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:22,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:22,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:22,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:22,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:22,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:22,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:22,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:22,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:22,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:22,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:22,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-12 10:07:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:23,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:23,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:23,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:23,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:23,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:23,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:23,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:23,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:23,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:23,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:23,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-12 10:07:23,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:23,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:23,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:23,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:23,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:23,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:23,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:23,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:23,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:23,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:23,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:23,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-12 10:07:23,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:23,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:23,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:23,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:23,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:23,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:23,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:23,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:23,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:23,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:23,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:23,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-12 10:07:23,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:23,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:23,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:23,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:23,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:23,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:23,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:23,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:23,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:23,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:23,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:23,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-12 10:07:23,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:23,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:23,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:23,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:23,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:23,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:23,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:23,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:23,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:23,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:23,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:23,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-12 10:07:23,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:23,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:23,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:23,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:23,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:23,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:23,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:23,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:23,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:23,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:23,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:23,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-12 10:07:23,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:23,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:23,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:23,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:23,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:23,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:23,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:23,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:23,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:23,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:23,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:23,023 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 16 proven. 435 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2020-10-12 10:07:23,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506199344] [2020-10-12 10:07:23,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:07:23,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-12 10:07:23,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060480421] [2020-10-12 10:07:23,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-12 10:07:23,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:07:23,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-12 10:07:23,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 10:07:23,024 INFO L87 Difference]: Start difference. First operand 117 states and 119 transitions. Second operand 33 states. [2020-10-12 10:07:23,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:07:23,521 INFO L93 Difference]: Finished difference Result 222 states and 234 transitions. [2020-10-12 10:07:23,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-12 10:07:23,522 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 114 [2020-10-12 10:07:23,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:07:23,523 INFO L225 Difference]: With dead ends: 222 [2020-10-12 10:07:23,523 INFO L226 Difference]: Without dead ends: 141 [2020-10-12 10:07:23,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 10:07:23,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-12 10:07:23,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 119. [2020-10-12 10:07:23,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-12 10:07:23,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2020-10-12 10:07:23,539 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 114 [2020-10-12 10:07:23,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:07:23,539 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 121 transitions. [2020-10-12 10:07:23,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-12 10:07:23,539 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 121 transitions. [2020-10-12 10:07:23,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 10:07:23,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:07:23,540 INFO L422 BasicCegarLoop]: trace histogram [30, 15, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:07:23,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-12 10:07:23,540 INFO L427 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:07:23,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:07:23,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1246655945, now seen corresponding path program 54 times [2020-10-12 10:07:23,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:07:23,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286427790] [2020-10-12 10:07:23,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:07:23,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:23,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:23,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:28,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:28,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-12 10:07:28,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:07:28,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-12 10:07:28,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:28,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 10:07:28,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:07:28,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 10:07:28,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:29,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:07:29,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:29,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:29,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:29,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:07:29,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:29,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:07:29,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:29,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:29,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:07:29,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:29,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:29,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-12 10:07:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:29,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:29,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:29,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:29,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:29,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:29,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:29,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:29,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:29,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:29,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:29,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 10:07:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:29,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:29,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:29,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:29,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:29,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:29,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:29,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:29,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:29,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:29,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:29,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 10:07:29,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:29,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:29,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:29,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:29,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:29,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:29,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:29,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:29,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:29,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:29,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:29,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-12 10:07:29,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:29,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:29,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:29,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:29,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:29,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:29,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:29,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:29,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:29,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:29,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:29,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-12 10:07:29,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:29,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:29,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:29,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:29,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:29,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:29,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:29,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:29,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:29,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:29,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:29,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-12 10:07:29,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:29,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:29,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:29,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:29,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:29,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:29,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:29,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:29,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:29,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:29,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:29,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-12 10:07:29,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:29,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:29,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:29,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:29,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:29,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:07:29,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:29,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:29,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:29,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:29,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:29,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-12 10:07:29,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:29,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:29,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:29,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:29,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:29,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:07:29,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:29,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:29,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:29,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:29,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:29,276 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 16 proven. 465 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2020-10-12 10:07:29,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1286427790] [2020-10-12 10:07:29,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:07:29,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-12 10:07:29,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874369673] [2020-10-12 10:07:29,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-12 10:07:29,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:07:29,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-12 10:07:29,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 10:07:29,278 INFO L87 Difference]: Start difference. First operand 119 states and 121 transitions. Second operand 34 states. [2020-10-12 10:07:29,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:07:29,679 INFO L93 Difference]: Finished difference Result 224 states and 235 transitions. [2020-10-12 10:07:29,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-12 10:07:29,680 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 116 [2020-10-12 10:07:29,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:07:29,681 INFO L225 Difference]: With dead ends: 224 [2020-10-12 10:07:29,681 INFO L226 Difference]: Without dead ends: 142 [2020-10-12 10:07:29,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 10:07:29,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-12 10:07:29,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 120. [2020-10-12 10:07:29,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-12 10:07:29,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 122 transitions. [2020-10-12 10:07:29,700 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 122 transitions. Word has length 116 [2020-10-12 10:07:29,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:07:29,701 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 122 transitions. [2020-10-12 10:07:29,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-12 10:07:29,701 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 122 transitions. [2020-10-12 10:07:29,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-12 10:07:29,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:07:29,702 INFO L422 BasicCegarLoop]: trace histogram [31, 15, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:07:29,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-12 10:07:29,702 INFO L427 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:07:29,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:07:29,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1674598363, now seen corresponding path program 55 times [2020-10-12 10:07:29,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:07:29,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274350663] [2020-10-12 10:07:29,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:07:29,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:29,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:29,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:34,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:34,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-12 10:07:34,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:07:34,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 10:07:34,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:34,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 10:07:34,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:07:34,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 10:07:34,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:35,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:07:35,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:35,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:35,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:35,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:07:35,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:35,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:07:35,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:35,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:35,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:07:35,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:35,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:35,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-12 10:07:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:35,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:35,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:35,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:35,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:35,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:35,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:35,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:35,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:35,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:35,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:35,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-12 10:07:35,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:35,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:35,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:35,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:35,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:35,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:35,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:35,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:35,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:35,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:35,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:35,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-12 10:07:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:35,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:35,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:35,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:35,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:35,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:35,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:35,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:35,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:35,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:35,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:35,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 10:07:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:35,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:35,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:35,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:35,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:35,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:35,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:35,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:35,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:35,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:35,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:35,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-12 10:07:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:35,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:35,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:35,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:35,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:35,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:35,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:35,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:35,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:35,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:35,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:35,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-12 10:07:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:35,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:35,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:35,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:35,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:35,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:35,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:35,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:35,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:35,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:35,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:35,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-12 10:07:35,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:35,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:35,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:35,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:35,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:35,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:35,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:35,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:35,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:35,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:35,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:35,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-12 10:07:35,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:35,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:35,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:35,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:07:35,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:07:35,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:07:35,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:35,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:07:35,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:07:35,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:07:35,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:07:35,429 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 16 proven. 496 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2020-10-12 10:07:35,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274350663] [2020-10-12 10:07:35,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:07:35,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-12 10:07:35,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458290881] [2020-10-12 10:07:35,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-12 10:07:35,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:07:35,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-12 10:07:35,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 10:07:35,431 INFO L87 Difference]: Start difference. First operand 120 states and 122 transitions. Second operand 35 states. [2020-10-12 10:07:36,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:07:36,033 INFO L93 Difference]: Finished difference Result 229 states and 242 transitions. [2020-10-12 10:07:36,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-12 10:07:36,034 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 117 [2020-10-12 10:07:36,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:07:36,035 INFO L225 Difference]: With dead ends: 229 [2020-10-12 10:07:36,036 INFO L226 Difference]: Without dead ends: 147 [2020-10-12 10:07:36,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 10:07:36,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-12 10:07:36,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 122. [2020-10-12 10:07:36,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-12 10:07:36,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 124 transitions. [2020-10-12 10:07:36,057 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 124 transitions. Word has length 117 [2020-10-12 10:07:36,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:07:36,057 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 124 transitions. [2020-10-12 10:07:36,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-12 10:07:36,057 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 124 transitions. [2020-10-12 10:07:36,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-12 10:07:36,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:07:36,058 INFO L422 BasicCegarLoop]: trace histogram [32, 16, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:07:36,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-12 10:07:36,058 INFO L427 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:07:36,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:07:36,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1744537562, now seen corresponding path program 56 times [2020-10-12 10:07:36,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:07:36,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844474328] [2020-10-12 10:07:36,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:07:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:07:36,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:36,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:07:41,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:07:41,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-12 10:07:41,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:07:41,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 10:07:41,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:07:41,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 10:07:41,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 10:07:41,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 10:07:41,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0