/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-tiling/pr4.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 10:29:04,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 10:29:04,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 10:29:04,289 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 10:29:04,290 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 10:29:04,302 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 10:29:04,303 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 10:29:04,308 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 10:29:04,311 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 10:29:04,315 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 10:29:04,316 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 10:29:04,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 10:29:04,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 10:29:04,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 10:29:04,325 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 10:29:04,327 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 10:29:04,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 10:29:04,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 10:29:04,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 10:29:04,338 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 10:29:04,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 10:29:04,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 10:29:04,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 10:29:04,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 10:29:04,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 10:29:04,350 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 10:29:04,351 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 10:29:04,354 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 10:29:04,354 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 10:29:04,356 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 10:29:04,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 10:29:04,357 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 10:29:04,358 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 10:29:04,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 10:29:04,360 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 10:29:04,360 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 10:29:04,361 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 10:29:04,361 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 10:29:04,361 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 10:29:04,362 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 10:29:04,363 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 10:29:04,364 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 10:29:04,411 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 10:29:04,412 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 10:29:04,414 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 10:29:04,415 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 10:29:04,415 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 10:29:04,415 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 10:29:04,415 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 10:29:04,416 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 10:29:04,416 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 10:29:04,416 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 10:29:04,417 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 10:29:04,417 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 10:29:04,417 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 10:29:04,418 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 10:29:04,418 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 10:29:04,418 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 10:29:04,418 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 10:29:04,419 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 10:29:04,419 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 10:29:04,419 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 10:29:04,419 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 10:29:04,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 10:29:04,420 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 10:29:04,420 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 10:29:04,420 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 10:29:04,420 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 10:29:04,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 10:29:04,421 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 10:29:04,421 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 10:29:04,421 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 10:29:04,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 10:29:04,739 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 10:29:04,743 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 10:29:04,745 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 10:29:04,745 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 10:29:04,746 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/pr4.c [2020-10-12 10:29:04,824 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be9950ec6/ddf85e1a438f4fa6af1907556d8496df/FLAG0d5e07fb8 [2020-10-12 10:29:05,309 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 10:29:05,309 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/pr4.c [2020-10-12 10:29:05,317 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be9950ec6/ddf85e1a438f4fa6af1907556d8496df/FLAG0d5e07fb8 [2020-10-12 10:29:05,665 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be9950ec6/ddf85e1a438f4fa6af1907556d8496df [2020-10-12 10:29:05,676 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 10:29:05,678 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 10:29:05,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 10:29:05,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 10:29:05,684 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 10:29:05,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:29:05" (1/1) ... [2020-10-12 10:29:05,689 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a33c50b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:29:05, skipping insertion in model container [2020-10-12 10:29:05,689 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:29:05" (1/1) ... [2020-10-12 10:29:05,698 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 10:29:05,720 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 10:29:05,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:29:05,906 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 10:29:05,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:29:05,956 INFO L208 MainTranslator]: Completed translation [2020-10-12 10:29:05,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:29:05 WrapperNode [2020-10-12 10:29:05,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 10:29:05,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 10:29:05,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 10:29:05,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 10:29:06,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:29:05" (1/1) ... [2020-10-12 10:29:06,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:29:05" (1/1) ... [2020-10-12 10:29:06,057 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:29:05" (1/1) ... [2020-10-12 10:29:06,058 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:29:05" (1/1) ... [2020-10-12 10:29:06,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:29:05" (1/1) ... [2020-10-12 10:29:06,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:29:05" (1/1) ... [2020-10-12 10:29:06,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:29:05" (1/1) ... [2020-10-12 10:29:06,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 10:29:06,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 10:29:06,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 10:29:06,079 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 10:29:06,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:29:05" (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 10:29:06,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 10:29:06,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 10:29:06,152 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 10:29:06,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 10:29:06,152 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 10:29:06,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 10:29:06,153 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 10:29:06,153 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 10:29:06,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 10:29:06,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 10:29:06,153 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 10:29:06,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 10:29:06,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 10:29:06,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 10:29:06,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 10:29:06,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 10:29:06,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 10:29:06,478 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 10:29:06,478 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-12 10:29:06,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:29:06 BoogieIcfgContainer [2020-10-12 10:29:06,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 10:29:06,484 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 10:29:06,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 10:29:06,488 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 10:29:06,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 10:29:05" (1/3) ... [2020-10-12 10:29:06,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e5af02e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:29:06, skipping insertion in model container [2020-10-12 10:29:06,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:29:05" (2/3) ... [2020-10-12 10:29:06,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e5af02e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:29:06, skipping insertion in model container [2020-10-12 10:29:06,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:29:06" (3/3) ... [2020-10-12 10:29:06,492 INFO L109 eAbstractionObserver]: Analyzing ICFG pr4.c [2020-10-12 10:29:06,505 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 10:29:06,519 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 10:29:06,545 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 10:29:06,566 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 10:29:06,566 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 10:29:06,566 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 10:29:06,567 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 10:29:06,567 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 10:29:06,567 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 10:29:06,567 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 10:29:06,567 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 10:29:06,585 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-10-12 10:29:06,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-12 10:29:06,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:06,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:06,593 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:06,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:06,599 INFO L82 PathProgramCache]: Analyzing trace with hash -386211914, now seen corresponding path program 1 times [2020-10-12 10:29:06,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:06,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211181429] [2020-10-12 10:29:06,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:06,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:06,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:06,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:07,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:07,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 10:29:07,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:29:07,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 492 [2020-10-12 10:29:07,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:07,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:29:07,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-12 10:29:07,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:07,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 10:29:07,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:07,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:07,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:07,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:07,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:07,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:29:07,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:07,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:07,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:07,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:07,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:07,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:07,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:07,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:07,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:07,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:07,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:07,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:29:07,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 10:29:07,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:07,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:07,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 10:29:07,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:07,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:07,383 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 10:29:07,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211181429] [2020-10-12 10:29:07,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:29:07,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 10:29:07,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649179317] [2020-10-12 10:29:07,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 10:29:07,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:07,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 10:29:07,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 10:29:07,412 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 6 states. [2020-10-12 10:29:07,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:07,648 INFO L93 Difference]: Finished difference Result 71 states and 95 transitions. [2020-10-12 10:29:07,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 10:29:07,650 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-12 10:29:07,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:07,660 INFO L225 Difference]: With dead ends: 71 [2020-10-12 10:29:07,661 INFO L226 Difference]: Without dead ends: 38 [2020-10-12 10:29:07,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 10:29:07,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-12 10:29:07,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-12 10:29:07,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-12 10:29:07,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2020-10-12 10:29:07,713 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 22 [2020-10-12 10:29:07,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:07,714 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2020-10-12 10:29:07,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 10:29:07,714 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2020-10-12 10:29:07,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-12 10:29:07,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:07,716 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:07,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 10:29:07,717 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:07,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:07,718 INFO L82 PathProgramCache]: Analyzing trace with hash 871908403, now seen corresponding path program 1 times [2020-10-12 10:29:07,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:07,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811267459] [2020-10-12 10:29:07,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:07,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:07,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:07,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:08,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:08,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:08,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 10:29:08,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 10:29:08,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 857 [2020-10-12 10:29:08,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:08,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 10:29:08,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 10:29:08,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 10:29:08,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:08,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:08,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:08,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:08,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:08,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:08,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:08,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:29:08,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:08,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:08,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:08,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:08,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:08,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:08,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:08,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:08,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:08,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:08,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:08,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 10:29:08,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:08,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:29:08,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:08,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:29:08,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:08,791 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 10:29:08,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1811267459] [2020-10-12 10:29:08,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:29:08,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 10:29:08,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346377926] [2020-10-12 10:29:08,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 10:29:08,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:08,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 10:29:08,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 10:29:08,796 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand 9 states. [2020-10-12 10:29:09,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:09,289 INFO L93 Difference]: Finished difference Result 67 states and 82 transitions. [2020-10-12 10:29:09,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 10:29:09,290 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-10-12 10:29:09,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:09,295 INFO L225 Difference]: With dead ends: 67 [2020-10-12 10:29:09,295 INFO L226 Difference]: Without dead ends: 49 [2020-10-12 10:29:09,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-12 10:29:09,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-12 10:29:09,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 38. [2020-10-12 10:29:09,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-12 10:29:09,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-10-12 10:29:09,312 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 22 [2020-10-12 10:29:09,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:09,313 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-10-12 10:29:09,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 10:29:09,313 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-10-12 10:29:09,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-12 10:29:09,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:09,315 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:09,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 10:29:09,315 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:09,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:09,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1794516160, now seen corresponding path program 1 times [2020-10-12 10:29:09,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:09,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66667882] [2020-10-12 10:29:09,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:09,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:09,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:09,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:09,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 10:29:09,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:09,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-12 10:29:09,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:09,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:29:09,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:29:09,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 10:29:09,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:09,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:09,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:09,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:09,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:09,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:09,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:09,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:09,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:09,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:09,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:09,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:09,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:09,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:09,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:09,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:09,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:09,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:09,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:29:09,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:09,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:09,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:09,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:09,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:09,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:29:09,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66667882] [2020-10-12 10:29:09,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:09,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 10:29:09,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788042513] [2020-10-12 10:29:09,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 10:29:09,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:09,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 10:29:09,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-12 10:29:09,684 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 8 states. [2020-10-12 10:29:10,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:10,090 INFO L93 Difference]: Finished difference Result 89 states and 117 transitions. [2020-10-12 10:29:10,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 10:29:10,090 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-10-12 10:29:10,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:10,092 INFO L225 Difference]: With dead ends: 89 [2020-10-12 10:29:10,092 INFO L226 Difference]: Without dead ends: 73 [2020-10-12 10:29:10,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-12 10:29:10,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-12 10:29:10,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 47. [2020-10-12 10:29:10,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-12 10:29:10,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 58 transitions. [2020-10-12 10:29:10,105 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 58 transitions. Word has length 28 [2020-10-12 10:29:10,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:10,105 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 58 transitions. [2020-10-12 10:29:10,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 10:29:10,106 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 58 transitions. [2020-10-12 10:29:10,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-12 10:29:10,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:10,107 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:10,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 10:29:10,107 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:10,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:10,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1207710146, now seen corresponding path program 1 times [2020-10-12 10:29:10,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:10,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139250510] [2020-10-12 10:29:10,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:10,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:10,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:10,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:10,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:10,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:10,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 10:29:10,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:29:10,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-12 10:29:10,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:10,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 10:29:10,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:29:10,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 10:29:10,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:10,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:10,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:10,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:10,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:10,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:10,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:29:10,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:10,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:10,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:10,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:10,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:10,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:10,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:10,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:10,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:10,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:10,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:10,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:10,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:10,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:10,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:10,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:10,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:29:10,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139250510] [2020-10-12 10:29:10,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:10,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 10:29:10,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174527435] [2020-10-12 10:29:10,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 10:29:10,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:10,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 10:29:10,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-12 10:29:10,445 INFO L87 Difference]: Start difference. First operand 47 states and 58 transitions. Second operand 10 states. [2020-10-12 10:29:10,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:10,904 INFO L93 Difference]: Finished difference Result 89 states and 121 transitions. [2020-10-12 10:29:10,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 10:29:10,904 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2020-10-12 10:29:10,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:10,907 INFO L225 Difference]: With dead ends: 89 [2020-10-12 10:29:10,907 INFO L226 Difference]: Without dead ends: 87 [2020-10-12 10:29:10,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-10-12 10:29:10,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-12 10:29:10,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 57. [2020-10-12 10:29:10,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-12 10:29:10,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 75 transitions. [2020-10-12 10:29:10,920 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 75 transitions. Word has length 28 [2020-10-12 10:29:10,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:10,920 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 75 transitions. [2020-10-12 10:29:10,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 10:29:10,921 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 75 transitions. [2020-10-12 10:29:10,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-12 10:29:10,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:10,922 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:10,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 10:29:10,922 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:10,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:10,923 INFO L82 PathProgramCache]: Analyzing trace with hash 601928847, now seen corresponding path program 1 times [2020-10-12 10:29:10,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:10,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027647699] [2020-10-12 10:29:10,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:10,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:10,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:10,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:10,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:10,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:11,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:11,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:11,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 10:29:11,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 10:29:11,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 490 [2020-10-12 10:29:11,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:11,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 10:29:11,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:29:11,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 10:29:11,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:11,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:11,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:11,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:11,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:11,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:11,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:11,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:11,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:11,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:11,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:11,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:11,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:11,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:11,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:11,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:11,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:11,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:11,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 10:29:11,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:11,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:11,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:11,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:11,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:11,501 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-12 10:29:11,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027647699] [2020-10-12 10:29:11,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:11,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 10:29:11,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115026523] [2020-10-12 10:29:11,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 10:29:11,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:11,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 10:29:11,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 10:29:11,505 INFO L87 Difference]: Start difference. First operand 57 states and 75 transitions. Second operand 5 states. [2020-10-12 10:29:11,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:11,658 INFO L93 Difference]: Finished difference Result 95 states and 128 transitions. [2020-10-12 10:29:11,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 10:29:11,659 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-12 10:29:11,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:11,660 INFO L225 Difference]: With dead ends: 95 [2020-10-12 10:29:11,660 INFO L226 Difference]: Without dead ends: 63 [2020-10-12 10:29:11,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 10:29:11,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-12 10:29:11,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2020-10-12 10:29:11,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-12 10:29:11,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 73 transitions. [2020-10-12 10:29:11,672 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 73 transitions. Word has length 34 [2020-10-12 10:29:11,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:11,672 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 73 transitions. [2020-10-12 10:29:11,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 10:29:11,673 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 73 transitions. [2020-10-12 10:29:11,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-12 10:29:11,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:11,674 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:11,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 10:29:11,675 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:11,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:11,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1302993425, now seen corresponding path program 1 times [2020-10-12 10:29:11,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:11,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567616552] [2020-10-12 10:29:11,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:11,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:11,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:11,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:11,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:11,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:11,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:11,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:11,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:12,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:12,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 10:29:12,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 10:29:12,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 504 [2020-10-12 10:29:12,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:12,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 10:29:12,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:29:12,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 10:29:12,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:12,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:12,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:12,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:12,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:12,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:12,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:12,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:12,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:12,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:12,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:12,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:12,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:12,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:12,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:12,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:12,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:12,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:12,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:12,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 10:29:12,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:12,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:12,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:12,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:12,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:12,247 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:29:12,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567616552] [2020-10-12 10:29:12,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:12,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 10:29:12,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195094448] [2020-10-12 10:29:12,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 10:29:12,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:12,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 10:29:12,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 10:29:12,249 INFO L87 Difference]: Start difference. First operand 57 states and 73 transitions. Second operand 5 states. [2020-10-12 10:29:12,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:12,366 INFO L93 Difference]: Finished difference Result 117 states and 158 transitions. [2020-10-12 10:29:12,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 10:29:12,366 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-12 10:29:12,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:12,368 INFO L225 Difference]: With dead ends: 117 [2020-10-12 10:29:12,368 INFO L226 Difference]: Without dead ends: 85 [2020-10-12 10:29:12,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 10:29:12,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-12 10:29:12,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 71. [2020-10-12 10:29:12,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-12 10:29:12,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 95 transitions. [2020-10-12 10:29:12,380 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 95 transitions. Word has length 34 [2020-10-12 10:29:12,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:12,381 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 95 transitions. [2020-10-12 10:29:12,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 10:29:12,381 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 95 transitions. [2020-10-12 10:29:12,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-12 10:29:12,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:12,382 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:12,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 10:29:12,383 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:12,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:12,383 INFO L82 PathProgramCache]: Analyzing trace with hash 281925071, now seen corresponding path program 1 times [2020-10-12 10:29:12,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:12,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717411875] [2020-10-12 10:29:12,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:12,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:12,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:12,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:12,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:12,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:12,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:12,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:12,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 10:29:12,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 10:29:12,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 449 [2020-10-12 10:29:12,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:12,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 10:29:12,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:29:12,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 10:29:12,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:12,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:12,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:12,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:12,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:12,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:12,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:12,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:12,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:12,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:12,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:12,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:12,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:12,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:12,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:12,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:12,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:12,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:12,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 10:29:12,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:12,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:12,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:12,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:12,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:12,911 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-12 10:29:12,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717411875] [2020-10-12 10:29:12,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:12,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 10:29:12,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262471311] [2020-10-12 10:29:12,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 10:29:12,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:12,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 10:29:12,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 10:29:12,914 INFO L87 Difference]: Start difference. First operand 71 states and 95 transitions. Second operand 5 states. [2020-10-12 10:29:13,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:13,034 INFO L93 Difference]: Finished difference Result 97 states and 126 transitions. [2020-10-12 10:29:13,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 10:29:13,035 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-12 10:29:13,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:13,037 INFO L225 Difference]: With dead ends: 97 [2020-10-12 10:29:13,037 INFO L226 Difference]: Without dead ends: 69 [2020-10-12 10:29:13,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 10:29:13,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-12 10:29:13,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 63. [2020-10-12 10:29:13,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-12 10:29:13,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 81 transitions. [2020-10-12 10:29:13,048 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 81 transitions. Word has length 34 [2020-10-12 10:29:13,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:13,048 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 81 transitions. [2020-10-12 10:29:13,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 10:29:13,048 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 81 transitions. [2020-10-12 10:29:13,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-12 10:29:13,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:13,050 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:13,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 10:29:13,050 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:13,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:13,050 INFO L82 PathProgramCache]: Analyzing trace with hash -111101939, now seen corresponding path program 1 times [2020-10-12 10:29:13,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:13,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848811275] [2020-10-12 10:29:13,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:13,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:13,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:13,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:13,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:13,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:13,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 10:29:13,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:29:13,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-12 10:29:13,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:13,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 10:29:13,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:29:13,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 10:29:13,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:13,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:13,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:13,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:13,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:13,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:13,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:13,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:13,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:13,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:13,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:13,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:13,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:13,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:13,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:13,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:13,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:13,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:13,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:13,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 10:29:13,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:13,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:13,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:13,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:13,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:13,375 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:29:13,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848811275] [2020-10-12 10:29:13,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:13,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 10:29:13,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818105674] [2020-10-12 10:29:13,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 10:29:13,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:13,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 10:29:13,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 10:29:13,378 INFO L87 Difference]: Start difference. First operand 63 states and 81 transitions. Second operand 5 states. [2020-10-12 10:29:13,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:13,486 INFO L93 Difference]: Finished difference Result 107 states and 141 transitions. [2020-10-12 10:29:13,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 10:29:13,487 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-12 10:29:13,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:13,488 INFO L225 Difference]: With dead ends: 107 [2020-10-12 10:29:13,488 INFO L226 Difference]: Without dead ends: 84 [2020-10-12 10:29:13,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 10:29:13,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-12 10:29:13,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 63. [2020-10-12 10:29:13,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-12 10:29:13,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 81 transitions. [2020-10-12 10:29:13,498 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 81 transitions. Word has length 34 [2020-10-12 10:29:13,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:13,498 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 81 transitions. [2020-10-12 10:29:13,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 10:29:13,498 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 81 transitions. [2020-10-12 10:29:13,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-12 10:29:13,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:13,500 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:13,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 10:29:13,500 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:13,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:13,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1699449841, now seen corresponding path program 1 times [2020-10-12 10:29:13,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:13,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1878200021] [2020-10-12 10:29:13,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:13,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:13,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:13,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:13,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 10:29:13,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:13,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-12 10:29:13,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:13,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:13,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 10:29:13,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:29:13,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:13,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:13,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:13,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:13,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:13,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:13,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:13,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:13,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:13,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:13,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:13,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:13,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:13,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:13,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:13,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:13,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:13,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:13,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:13,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:13,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:13,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:13,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:13,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:13,599 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:29:13,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1878200021] [2020-10-12 10:29:13,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:29:13,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 10:29:13,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095123077] [2020-10-12 10:29:13,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 10:29:13,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:13,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 10:29:13,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 10:29:13,602 INFO L87 Difference]: Start difference. First operand 63 states and 81 transitions. Second operand 4 states. [2020-10-12 10:29:13,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:13,691 INFO L93 Difference]: Finished difference Result 92 states and 117 transitions. [2020-10-12 10:29:13,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 10:29:13,692 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-12 10:29:13,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:13,693 INFO L225 Difference]: With dead ends: 92 [2020-10-12 10:29:13,693 INFO L226 Difference]: Without dead ends: 69 [2020-10-12 10:29:13,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 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 10:29:13,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-12 10:29:13,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 57. [2020-10-12 10:29:13,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-12 10:29:13,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 69 transitions. [2020-10-12 10:29:13,704 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 69 transitions. Word has length 34 [2020-10-12 10:29:13,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:13,704 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 69 transitions. [2020-10-12 10:29:13,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 10:29:13,705 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 69 transitions. [2020-10-12 10:29:13,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-12 10:29:13,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:13,706 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:13,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 10:29:13,707 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:13,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:13,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1493379727, now seen corresponding path program 2 times [2020-10-12 10:29:13,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:13,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009218972] [2020-10-12 10:29:13,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:13,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:13,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:13,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:13,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 10:29:13,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:13,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-12 10:29:13,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:13,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:13,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 10:29:13,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:29:13,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:13,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:13,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:13,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:13,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:13,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:13,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:13,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:13,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:13,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:13,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:13,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:13,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:13,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:13,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:13,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:13,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:13,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:13,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:13,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:13,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:13,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:13,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:13,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:13,837 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:29:13,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009218972] [2020-10-12 10:29:13,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:29:13,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 10:29:13,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019294973] [2020-10-12 10:29:13,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 10:29:13,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:13,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 10:29:13,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 10:29:13,839 INFO L87 Difference]: Start difference. First operand 57 states and 69 transitions. Second operand 4 states. [2020-10-12 10:29:13,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:13,941 INFO L93 Difference]: Finished difference Result 79 states and 95 transitions. [2020-10-12 10:29:13,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 10:29:13,941 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-12 10:29:13,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:13,942 INFO L225 Difference]: With dead ends: 79 [2020-10-12 10:29:13,942 INFO L226 Difference]: Without dead ends: 56 [2020-10-12 10:29:13,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 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 10:29:13,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-12 10:29:13,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2020-10-12 10:29:13,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-12 10:29:13,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2020-10-12 10:29:13,951 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 34 [2020-10-12 10:29:13,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:13,951 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2020-10-12 10:29:13,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 10:29:13,951 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2020-10-12 10:29:13,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-12 10:29:13,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:13,952 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:13,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 10:29:13,953 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:13,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:13,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1648903933, now seen corresponding path program 1 times [2020-10-12 10:29:13,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:13,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495516496] [2020-10-12 10:29:13,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:13,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:13,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:14,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:14,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-12 10:29:14,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:14,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-12 10:29:14,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:14,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:29:14,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:29:14,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 10:29:14,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:14,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:14,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:14,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:14,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:14,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:14,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:14,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:14,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:14,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:14,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:14,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:14,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:14,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:14,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:14,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:14,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:14,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:14,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:14,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:14,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:14,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:14,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:14,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:14,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-12 10:29:14,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:14,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:14,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:14,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:14,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:14,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:29:14,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:14,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:14,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:14,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:14,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:14,269 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:29:14,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495516496] [2020-10-12 10:29:14,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:14,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 10:29:14,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804816556] [2020-10-12 10:29:14,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 10:29:14,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:14,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 10:29:14,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-12 10:29:14,272 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand 9 states. [2020-10-12 10:29:14,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:14,719 INFO L93 Difference]: Finished difference Result 135 states and 176 transitions. [2020-10-12 10:29:14,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 10:29:14,720 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-10-12 10:29:14,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:14,721 INFO L225 Difference]: With dead ends: 135 [2020-10-12 10:29:14,721 INFO L226 Difference]: Without dead ends: 119 [2020-10-12 10:29:14,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-10-12 10:29:14,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-12 10:29:14,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 71. [2020-10-12 10:29:14,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-12 10:29:14,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 88 transitions. [2020-10-12 10:29:14,733 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 88 transitions. Word has length 37 [2020-10-12 10:29:14,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:14,733 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 88 transitions. [2020-10-12 10:29:14,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 10:29:14,734 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 88 transitions. [2020-10-12 10:29:14,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-12 10:29:14,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:14,736 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:14,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 10:29:14,736 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:14,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:14,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1226202107, now seen corresponding path program 1 times [2020-10-12 10:29:14,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:14,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727153158] [2020-10-12 10:29:14,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:14,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:14,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:14,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:14,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:14,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:15,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:15,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-12 10:29:15,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 10:29:15,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-10-12 10:29:15,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:15,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 10:29:15,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:29:15,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 10:29:15,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:15,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:15,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:15,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:15,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:15,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:15,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:15,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:15,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:15,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:15,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:15,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:15,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:15,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:15,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:15,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:15,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:15,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:15,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:15,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:15,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:15,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:15,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:15,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:15,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:15,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-12 10:29:15,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:15,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:15,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:15,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:15,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:15,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:29:15,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:15,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:15,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:15,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:15,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:15,271 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:29:15,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727153158] [2020-10-12 10:29:15,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:15,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 10:29:15,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016698322] [2020-10-12 10:29:15,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 10:29:15,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:15,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 10:29:15,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-12 10:29:15,274 INFO L87 Difference]: Start difference. First operand 71 states and 88 transitions. Second operand 11 states. [2020-10-12 10:29:15,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:15,679 INFO L93 Difference]: Finished difference Result 135 states and 173 transitions. [2020-10-12 10:29:15,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 10:29:15,681 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-10-12 10:29:15,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:15,682 INFO L225 Difference]: With dead ends: 135 [2020-10-12 10:29:15,682 INFO L226 Difference]: Without dead ends: 133 [2020-10-12 10:29:15,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-10-12 10:29:15,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-12 10:29:15,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 101. [2020-10-12 10:29:15,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-12 10:29:15,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 129 transitions. [2020-10-12 10:29:15,703 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 129 transitions. Word has length 37 [2020-10-12 10:29:15,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:15,704 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 129 transitions. [2020-10-12 10:29:15,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 10:29:15,704 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 129 transitions. [2020-10-12 10:29:15,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-12 10:29:15,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:15,706 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:15,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 10:29:15,706 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:15,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:15,707 INFO L82 PathProgramCache]: Analyzing trace with hash -439945256, now seen corresponding path program 1 times [2020-10-12 10:29:15,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:15,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395832893] [2020-10-12 10:29:15,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:15,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:15,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:15,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:15,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:15,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:15,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:15,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:15,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:16,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:16,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-12 10:29:16,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 10:29:16,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 813 [2020-10-12 10:29:16,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:16,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 10:29:16,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:29:16,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 10:29:16,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:16,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:16,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:16,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:16,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:16,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:16,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:16,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:16,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:16,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:16,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:16,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:16,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:16,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:16,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:16,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:16,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:16,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:16,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:29:16,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:16,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:16,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:16,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:16,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:16,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:29:16,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:16,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:16,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:16,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:16,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:16,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:16,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:16,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:16,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:29:16,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:16,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:16,600 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 10:29:16,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395832893] [2020-10-12 10:29:16,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:16,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 10:29:16,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170738866] [2020-10-12 10:29:16,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 10:29:16,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:16,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 10:29:16,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 10:29:16,603 INFO L87 Difference]: Start difference. First operand 101 states and 129 transitions. Second operand 5 states. [2020-10-12 10:29:16,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:16,735 INFO L93 Difference]: Finished difference Result 185 states and 241 transitions. [2020-10-12 10:29:16,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 10:29:16,736 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-10-12 10:29:16,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:16,737 INFO L225 Difference]: With dead ends: 185 [2020-10-12 10:29:16,737 INFO L226 Difference]: Without dead ends: 141 [2020-10-12 10:29:16,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 10:29:16,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-12 10:29:16,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 115. [2020-10-12 10:29:16,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-12 10:29:16,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 150 transitions. [2020-10-12 10:29:16,753 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 150 transitions. Word has length 43 [2020-10-12 10:29:16,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:16,753 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 150 transitions. [2020-10-12 10:29:16,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 10:29:16,754 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 150 transitions. [2020-10-12 10:29:16,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-12 10:29:16,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:16,755 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:16,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 10:29:16,755 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:16,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:16,755 INFO L82 PathProgramCache]: Analyzing trace with hash -299396646, now seen corresponding path program 1 times [2020-10-12 10:29:16,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:16,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785776362] [2020-10-12 10:29:16,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:16,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:16,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:16,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:16,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:16,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:16,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:16,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:16,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:17,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:17,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-12 10:29:17,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 10:29:17,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 664 [2020-10-12 10:29:17,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:17,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 10:29:17,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:29:17,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 10:29:17,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:17,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:17,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:17,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:17,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:17,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:17,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:17,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:17,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:17,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:17,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:17,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:17,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:17,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:17,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:17,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:17,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:17,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:17,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:17,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:29:17,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:17,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:17,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:17,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:17,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:17,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:29:17,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:17,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:17,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:17,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:17,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:17,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:17,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:17,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:17,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:29:17,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:17,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:17,495 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 10:29:17,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785776362] [2020-10-12 10:29:17,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:17,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 10:29:17,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783721679] [2020-10-12 10:29:17,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 10:29:17,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:17,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 10:29:17,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 10:29:17,497 INFO L87 Difference]: Start difference. First operand 115 states and 150 transitions. Second operand 5 states. [2020-10-12 10:29:17,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:17,616 INFO L93 Difference]: Finished difference Result 155 states and 196 transitions. [2020-10-12 10:29:17,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 10:29:17,617 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-10-12 10:29:17,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:17,618 INFO L225 Difference]: With dead ends: 155 [2020-10-12 10:29:17,618 INFO L226 Difference]: Without dead ends: 115 [2020-10-12 10:29:17,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 10:29:17,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-12 10:29:17,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 107. [2020-10-12 10:29:17,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-12 10:29:17,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 136 transitions. [2020-10-12 10:29:17,632 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 136 transitions. Word has length 43 [2020-10-12 10:29:17,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:17,632 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 136 transitions. [2020-10-12 10:29:17,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 10:29:17,632 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 136 transitions. [2020-10-12 10:29:17,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-12 10:29:17,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:17,633 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:17,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 10:29:17,634 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:17,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:17,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1988340388, now seen corresponding path program 1 times [2020-10-12 10:29:17,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:17,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181296105] [2020-10-12 10:29:17,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:17,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:17,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:17,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:17,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:17,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:17,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:17,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:17,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-12 10:29:17,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 10:29:17,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 332 [2020-10-12 10:29:17,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:17,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 10:29:17,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:29:17,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 10:29:17,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:18,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:18,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:18,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:18,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:18,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:18,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:18,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:18,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:18,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:18,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:18,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:18,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:18,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:18,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:18,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:18,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:18,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:18,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:18,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:29:18,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:18,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:18,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:18,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:18,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:18,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:29:18,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:18,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:18,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:18,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:18,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:18,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:18,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:18,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:18,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:29:18,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:18,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:18,040 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 10:29:18,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181296105] [2020-10-12 10:29:18,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:18,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 10:29:18,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718603149] [2020-10-12 10:29:18,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 10:29:18,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:18,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 10:29:18,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 10:29:18,042 INFO L87 Difference]: Start difference. First operand 107 states and 136 transitions. Second operand 5 states. [2020-10-12 10:29:18,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:18,168 INFO L93 Difference]: Finished difference Result 146 states and 182 transitions. [2020-10-12 10:29:18,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 10:29:18,169 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-10-12 10:29:18,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:18,170 INFO L225 Difference]: With dead ends: 146 [2020-10-12 10:29:18,170 INFO L226 Difference]: Without dead ends: 102 [2020-10-12 10:29:18,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 10:29:18,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-12 10:29:18,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 84. [2020-10-12 10:29:18,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-12 10:29:18,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 102 transitions. [2020-10-12 10:29:18,191 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 102 transitions. Word has length 43 [2020-10-12 10:29:18,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:18,191 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 102 transitions. [2020-10-12 10:29:18,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 10:29:18,191 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 102 transitions. [2020-10-12 10:29:18,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-12 10:29:18,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:18,192 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:18,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 10:29:18,193 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:18,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:18,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1260399700, now seen corresponding path program 1 times [2020-10-12 10:29:18,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:18,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469753425] [2020-10-12 10:29:18,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:18,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:18,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:18,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-12 10:29:18,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:18,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 10:29:18,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:18,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:18,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 10:29:18,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:29:18,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:18,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:18,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:18,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:18,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:18,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:18,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:18,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:18,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:18,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:18,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:18,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:18,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:18,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:18,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:18,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:18,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:18,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:18,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:18,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:18,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:18,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:18,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:18,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:18,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:18,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:29:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:18,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:18,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:18,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:18,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:18,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:18,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:18,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:18,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:29:18,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:18,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:18,313 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 10:29:18,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469753425] [2020-10-12 10:29:18,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:29:18,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 10:29:18,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139126348] [2020-10-12 10:29:18,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 10:29:18,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:18,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 10:29:18,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 10:29:18,318 INFO L87 Difference]: Start difference. First operand 84 states and 102 transitions. Second operand 4 states. [2020-10-12 10:29:18,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:18,409 INFO L93 Difference]: Finished difference Result 116 states and 141 transitions. [2020-10-12 10:29:18,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 10:29:18,410 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-10-12 10:29:18,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:18,412 INFO L225 Difference]: With dead ends: 116 [2020-10-12 10:29:18,412 INFO L226 Difference]: Without dead ends: 91 [2020-10-12 10:29:18,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 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 10:29:18,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-12 10:29:18,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 84. [2020-10-12 10:29:18,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-12 10:29:18,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 100 transitions. [2020-10-12 10:29:18,426 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 100 transitions. Word has length 43 [2020-10-12 10:29:18,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:18,426 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 100 transitions. [2020-10-12 10:29:18,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 10:29:18,427 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 100 transitions. [2020-10-12 10:29:18,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-12 10:29:18,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:18,427 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:18,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 10:29:18,428 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:18,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:18,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1534041388, now seen corresponding path program 2 times [2020-10-12 10:29:18,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:18,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1256339766] [2020-10-12 10:29:18,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:18,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:18,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:18,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:18,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-12 10:29:18,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:18,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-12 10:29:18,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:18,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:18,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-12 10:29:18,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:29:18,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:18,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:18,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:18,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:18,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:18,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:18,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:18,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:18,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:18,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:18,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:18,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:18,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:18,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:18,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:18,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:18,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:18,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:29:18,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:18,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:18,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:18,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:18,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:18,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:29:18,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:18,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:18,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:18,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:18,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:18,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:18,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:18,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:18,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:29:18,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:18,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:18,539 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 10:29:18,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1256339766] [2020-10-12 10:29:18,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:29:18,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 10:29:18,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882306884] [2020-10-12 10:29:18,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 10:29:18,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:18,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 10:29:18,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 10:29:18,543 INFO L87 Difference]: Start difference. First operand 84 states and 100 transitions. Second operand 4 states. [2020-10-12 10:29:18,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:18,643 INFO L93 Difference]: Finished difference Result 106 states and 126 transitions. [2020-10-12 10:29:18,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 10:29:18,644 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-10-12 10:29:18,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:18,645 INFO L225 Difference]: With dead ends: 106 [2020-10-12 10:29:18,645 INFO L226 Difference]: Without dead ends: 81 [2020-10-12 10:29:18,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 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 10:29:18,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-12 10:29:18,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75. [2020-10-12 10:29:18,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-12 10:29:18,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 88 transitions. [2020-10-12 10:29:18,658 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 88 transitions. Word has length 43 [2020-10-12 10:29:18,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:18,659 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 88 transitions. [2020-10-12 10:29:18,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 10:29:18,659 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 88 transitions. [2020-10-12 10:29:18,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-12 10:29:18,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:18,660 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:18,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 10:29:18,660 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:18,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:18,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1488273440, now seen corresponding path program 2 times [2020-10-12 10:29:18,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:18,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [971306418] [2020-10-12 10:29:18,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:18,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:18,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:18,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:18,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 10:29:18,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:18,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-12 10:29:18,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:18,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:29:18,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:29:18,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 10:29:18,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:18,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:18,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:18,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:18,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:18,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:18,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:18,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:29:18,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:18,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:18,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:18,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:18,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:18,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:18,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:18,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:18,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:18,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:18,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:29:18,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:18,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:18,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:18,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:18,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:18,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-12 10:29:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:18,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:18,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:18,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:18,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:18,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:29:18,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:18,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:18,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:18,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:18,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:18,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-12 10:29:18,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:18,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:18,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:18,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:18,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:18,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:29:18,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:18,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:18,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:18,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:18,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:18,987 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 10:29:18,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [971306418] [2020-10-12 10:29:18,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:18,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 10:29:18,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026930336] [2020-10-12 10:29:18,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 10:29:18,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:18,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 10:29:18,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-12 10:29:18,995 INFO L87 Difference]: Start difference. First operand 75 states and 88 transitions. Second operand 10 states. [2020-10-12 10:29:19,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:19,431 INFO L93 Difference]: Finished difference Result 146 states and 179 transitions. [2020-10-12 10:29:19,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 10:29:19,432 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2020-10-12 10:29:19,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:19,433 INFO L225 Difference]: With dead ends: 146 [2020-10-12 10:29:19,433 INFO L226 Difference]: Without dead ends: 130 [2020-10-12 10:29:19,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-12 10:29:19,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-12 10:29:19,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 87. [2020-10-12 10:29:19,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-12 10:29:19,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 104 transitions. [2020-10-12 10:29:19,452 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 104 transitions. Word has length 46 [2020-10-12 10:29:19,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:19,453 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 104 transitions. [2020-10-12 10:29:19,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 10:29:19,453 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 104 transitions. [2020-10-12 10:29:19,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-12 10:29:19,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:19,454 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:19,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 10:29:19,454 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:19,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:19,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1420490462, now seen corresponding path program 1 times [2020-10-12 10:29:19,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:19,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647068927] [2020-10-12 10:29:19,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:19,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:19,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:19,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:19,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:19,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 10:29:19,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:29:19,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-12 10:29:19,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:19,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 10:29:19,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:29:19,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 10:29:19,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:19,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:19,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:19,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:19,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:19,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:19,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:29:19,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:19,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:19,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:19,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:19,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:19,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:19,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:19,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:19,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:19,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:19,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:19,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:19,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:19,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:19,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:19,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:19,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:19,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-12 10:29:19,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:19,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:19,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:19,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:19,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:19,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:29:19,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:19,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:19,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:19,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:19,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:19,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-12 10:29:19,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:19,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:19,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:19,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:19,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:19,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:29:19,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:19,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:19,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:19,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:19,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:19,953 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 10:29:19,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647068927] [2020-10-12 10:29:19,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:19,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 10:29:19,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778301660] [2020-10-12 10:29:19,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 10:29:19,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:19,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 10:29:19,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-12 10:29:19,957 INFO L87 Difference]: Start difference. First operand 87 states and 104 transitions. Second operand 12 states. [2020-10-12 10:29:21,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:21,113 INFO L93 Difference]: Finished difference Result 194 states and 237 transitions. [2020-10-12 10:29:21,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 10:29:21,114 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2020-10-12 10:29:21,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:21,116 INFO L225 Difference]: With dead ends: 194 [2020-10-12 10:29:21,116 INFO L226 Difference]: Without dead ends: 192 [2020-10-12 10:29:21,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=627, Unknown=0, NotChecked=0, Total=756 [2020-10-12 10:29:21,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-12 10:29:21,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 119. [2020-10-12 10:29:21,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-12 10:29:21,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 144 transitions. [2020-10-12 10:29:21,141 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 144 transitions. Word has length 46 [2020-10-12 10:29:21,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:21,142 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 144 transitions. [2020-10-12 10:29:21,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 10:29:21,142 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 144 transitions. [2020-10-12 10:29:21,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-12 10:29:21,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:21,143 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:21,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 10:29:21,144 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:21,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:21,144 INFO L82 PathProgramCache]: Analyzing trace with hash 223171247, now seen corresponding path program 1 times [2020-10-12 10:29:21,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:21,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831734324] [2020-10-12 10:29:21,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:21,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:21,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:21,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:21,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:21,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:21,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 10:29:21,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:29:21,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-12 10:29:21,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:21,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 10:29:21,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:29:21,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 10:29:21,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:21,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:21,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:21,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:21,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:21,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:21,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:21,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:21,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:21,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:21,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:21,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:21,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:21,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:21,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:21,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:21,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:21,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:21,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:21,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:29:21,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:21,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:21,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:21,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:21,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:21,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:29:21,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:21,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:21,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:21,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:21,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:21,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:21,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:21,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:21,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:29:21,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:21,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:21,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:29:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:21,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:21,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:21,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:21,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:21,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:21,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:21,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:21,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:29:21,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:21,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:21,413 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-12 10:29:21,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831734324] [2020-10-12 10:29:21,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:21,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 10:29:21,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605931921] [2020-10-12 10:29:21,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 10:29:21,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:21,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 10:29:21,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 10:29:21,415 INFO L87 Difference]: Start difference. First operand 119 states and 144 transitions. Second operand 5 states. [2020-10-12 10:29:21,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:21,557 INFO L93 Difference]: Finished difference Result 188 states and 228 transitions. [2020-10-12 10:29:21,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 10:29:21,557 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-10-12 10:29:21,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:21,560 INFO L225 Difference]: With dead ends: 188 [2020-10-12 10:29:21,560 INFO L226 Difference]: Without dead ends: 134 [2020-10-12 10:29:21,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 10:29:21,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-12 10:29:21,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 119. [2020-10-12 10:29:21,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-12 10:29:21,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 142 transitions. [2020-10-12 10:29:21,598 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 142 transitions. Word has length 52 [2020-10-12 10:29:21,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:21,599 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 142 transitions. [2020-10-12 10:29:21,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 10:29:21,599 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 142 transitions. [2020-10-12 10:29:21,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-12 10:29:21,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:21,601 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:21,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 10:29:21,601 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:21,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:21,602 INFO L82 PathProgramCache]: Analyzing trace with hash -286301843, now seen corresponding path program 1 times [2020-10-12 10:29:21,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:21,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546751962] [2020-10-12 10:29:21,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:21,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:21,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:21,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:21,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:21,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:21,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 10:29:21,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:29:21,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-12 10:29:21,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:21,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 10:29:21,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:29:21,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 10:29:21,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:21,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:21,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:21,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:21,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:21,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:21,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:21,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:21,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:21,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:21,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:21,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:21,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:21,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:21,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:21,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:21,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:21,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:21,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:29:21,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:21,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:21,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:21,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:21,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:21,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:29:21,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:21,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:21,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:21,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:21,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:21,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:21,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:21,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:21,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:29:21,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:21,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:21,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:29:21,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:21,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:21,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:21,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:21,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:21,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:21,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:21,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:21,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:29:21,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:21,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:21,887 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 10:29:21,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546751962] [2020-10-12 10:29:21,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:21,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 10:29:21,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725332619] [2020-10-12 10:29:21,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 10:29:21,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:21,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 10:29:21,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 10:29:21,889 INFO L87 Difference]: Start difference. First operand 119 states and 142 transitions. Second operand 5 states. [2020-10-12 10:29:22,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:22,015 INFO L93 Difference]: Finished difference Result 174 states and 209 transitions. [2020-10-12 10:29:22,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 10:29:22,015 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-10-12 10:29:22,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:22,017 INFO L225 Difference]: With dead ends: 174 [2020-10-12 10:29:22,017 INFO L226 Difference]: Without dead ends: 144 [2020-10-12 10:29:22,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 10:29:22,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-12 10:29:22,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 125. [2020-10-12 10:29:22,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-12 10:29:22,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 150 transitions. [2020-10-12 10:29:22,037 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 150 transitions. Word has length 52 [2020-10-12 10:29:22,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:22,038 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 150 transitions. [2020-10-12 10:29:22,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 10:29:22,038 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 150 transitions. [2020-10-12 10:29:22,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-12 10:29:22,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:22,039 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:22,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 10:29:22,040 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:22,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:22,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1764682155, now seen corresponding path program 1 times [2020-10-12 10:29:22,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:22,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1711270391] [2020-10-12 10:29:22,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:22,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:22,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:22,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:22,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 10:29:22,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:22,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-12 10:29:22,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:22,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:22,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-12 10:29:22,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:29:22,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:22,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:22,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:22,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:22,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:22,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:22,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:22,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:22,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:22,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:22,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:22,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:22,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:22,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:22,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:22,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:22,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:22,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:22,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:22,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:22,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:22,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:22,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:22,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:22,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:29:22,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:22,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:22,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:22,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:22,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:22,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:22,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:22,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:22,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:29:22,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:22,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:22,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:29:22,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:22,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:22,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:22,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:22,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:22,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:22,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:22,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:22,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:29:22,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:22,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:22,157 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 10:29:22,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1711270391] [2020-10-12 10:29:22,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:29:22,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 10:29:22,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779559074] [2020-10-12 10:29:22,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 10:29:22,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:22,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 10:29:22,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 10:29:22,160 INFO L87 Difference]: Start difference. First operand 125 states and 150 transitions. Second operand 4 states. [2020-10-12 10:29:22,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:22,283 INFO L93 Difference]: Finished difference Result 161 states and 193 transitions. [2020-10-12 10:29:22,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 10:29:22,283 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-10-12 10:29:22,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:22,285 INFO L225 Difference]: With dead ends: 161 [2020-10-12 10:29:22,285 INFO L226 Difference]: Without dead ends: 131 [2020-10-12 10:29:22,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 10:29:22,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-12 10:29:22,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 119. [2020-10-12 10:29:22,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-12 10:29:22,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 140 transitions. [2020-10-12 10:29:22,308 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 140 transitions. Word has length 52 [2020-10-12 10:29:22,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:22,309 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 140 transitions. [2020-10-12 10:29:22,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 10:29:22,309 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 140 transitions. [2020-10-12 10:29:22,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-12 10:29:22,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:22,311 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:22,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 10:29:22,311 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:22,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:22,312 INFO L82 PathProgramCache]: Analyzing trace with hash -465526741, now seen corresponding path program 2 times [2020-10-12 10:29:22,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:22,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803878608] [2020-10-12 10:29:22,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:22,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:22,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:22,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:22,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 10:29:22,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:22,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-12 10:29:22,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:22,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:22,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-12 10:29:22,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:29:22,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:22,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:22,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:22,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:22,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:22,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:22,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:22,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:22,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:22,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:22,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:22,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:22,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:22,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:22,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:22,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:22,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:22,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:22,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:22,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:22,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:22,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:22,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:22,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:22,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:29:22,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:22,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:22,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:22,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:22,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:22,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:22,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:22,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:22,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:29:22,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:22,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:22,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:29:22,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:22,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:22,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:22,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:22,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:22,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:22,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:22,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:22,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:29:22,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:22,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:22,421 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 10:29:22,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803878608] [2020-10-12 10:29:22,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:29:22,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 10:29:22,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004989082] [2020-10-12 10:29:22,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 10:29:22,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:22,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 10:29:22,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 10:29:22,423 INFO L87 Difference]: Start difference. First operand 119 states and 140 transitions. Second operand 4 states. [2020-10-12 10:29:22,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:22,526 INFO L93 Difference]: Finished difference Result 150 states and 176 transitions. [2020-10-12 10:29:22,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 10:29:22,527 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-10-12 10:29:22,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:22,528 INFO L225 Difference]: With dead ends: 150 [2020-10-12 10:29:22,528 INFO L226 Difference]: Without dead ends: 120 [2020-10-12 10:29:22,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 10:29:22,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-12 10:29:22,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 112. [2020-10-12 10:29:22,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-12 10:29:22,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 131 transitions. [2020-10-12 10:29:22,545 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 131 transitions. Word has length 52 [2020-10-12 10:29:22,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:22,545 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 131 transitions. [2020-10-12 10:29:22,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 10:29:22,546 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 131 transitions. [2020-10-12 10:29:22,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-12 10:29:22,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:22,546 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:22,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 10:29:22,547 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:22,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:22,547 INFO L82 PathProgramCache]: Analyzing trace with hash 290548131, now seen corresponding path program 3 times [2020-10-12 10:29:22,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:22,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620357203] [2020-10-12 10:29:22,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:22,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:22,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:22,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:22,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 10:29:22,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:22,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-12 10:29:22,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:22,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:29:22,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:29:22,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 10:29:22,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:22,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:22,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:22,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:22,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:22,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:22,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:22,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:22,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:22,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:22,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:22,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:22,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:22,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:22,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:22,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:22,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:22,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:22,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:22,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:22,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:22,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:22,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:22,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-12 10:29:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:22,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:22,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:22,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:22,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:22,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:29:22,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:22,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:22,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:22,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:22,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:22,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-12 10:29:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:22,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:22,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:22,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:22,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:22,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:29:22,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:22,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:22,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:22,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:22,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:22,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 10:29:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:22,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:22,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:22,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:22,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:22,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:29:22,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:22,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:22,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:22,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:22,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:22,909 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 22 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-12 10:29:22,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620357203] [2020-10-12 10:29:22,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:22,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 10:29:22,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710695365] [2020-10-12 10:29:22,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 10:29:22,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:22,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 10:29:22,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 10:29:22,912 INFO L87 Difference]: Start difference. First operand 112 states and 131 transitions. Second operand 10 states. [2020-10-12 10:29:23,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:23,634 INFO L93 Difference]: Finished difference Result 199 states and 236 transitions. [2020-10-12 10:29:23,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 10:29:23,635 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55 [2020-10-12 10:29:23,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:23,637 INFO L225 Difference]: With dead ends: 199 [2020-10-12 10:29:23,637 INFO L226 Difference]: Without dead ends: 183 [2020-10-12 10:29:23,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552 [2020-10-12 10:29:23,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-12 10:29:23,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 124. [2020-10-12 10:29:23,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-12 10:29:23,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 146 transitions. [2020-10-12 10:29:23,665 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 146 transitions. Word has length 55 [2020-10-12 10:29:23,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:23,666 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 146 transitions. [2020-10-12 10:29:23,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 10:29:23,666 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 146 transitions. [2020-10-12 10:29:23,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-12 10:29:23,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:23,668 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:23,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 10:29:23,668 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:23,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:23,669 INFO L82 PathProgramCache]: Analyzing trace with hash 950079653, now seen corresponding path program 1 times [2020-10-12 10:29:23,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:23,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284238603] [2020-10-12 10:29:23,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:23,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:23,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:23,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:23,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 10:29:23,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:23,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-12 10:29:23,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:23,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 10:29:23,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:29:23,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 10:29:23,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:24,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:24,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:24,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:24,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:24,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:24,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:24,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:24,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:24,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:24,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:24,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:24,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:24,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:24,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:24,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:24,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:24,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:24,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:29:24,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:24,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:24,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:24,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:24,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:24,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-12 10:29:24,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:24,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:24,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:24,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:24,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:24,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:24,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:24,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:24,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:24,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:24,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:24,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-12 10:29:24,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:24,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:24,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:24,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:24,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:24,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:24,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:24,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:24,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:24,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:24,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:24,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 10:29:24,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:24,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:24,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:24,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:24,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:24,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:24,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:24,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:24,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:24,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:24,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:24,049 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-12 10:29:24,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [284238603] [2020-10-12 10:29:24,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:24,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 10:29:24,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798946590] [2020-10-12 10:29:24,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 10:29:24,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:24,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 10:29:24,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-12 10:29:24,051 INFO L87 Difference]: Start difference. First operand 124 states and 146 transitions. Second operand 12 states. [2020-10-12 10:29:25,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:25,066 INFO L93 Difference]: Finished difference Result 222 states and 262 transitions. [2020-10-12 10:29:25,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 10:29:25,067 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 55 [2020-10-12 10:29:25,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:25,069 INFO L225 Difference]: With dead ends: 222 [2020-10-12 10:29:25,069 INFO L226 Difference]: Without dead ends: 220 [2020-10-12 10:29:25,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=792, Unknown=0, NotChecked=0, Total=930 [2020-10-12 10:29:25,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-12 10:29:25,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 154. [2020-10-12 10:29:25,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-12 10:29:25,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 183 transitions. [2020-10-12 10:29:25,097 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 183 transitions. Word has length 55 [2020-10-12 10:29:25,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:25,098 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 183 transitions. [2020-10-12 10:29:25,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 10:29:25,098 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 183 transitions. [2020-10-12 10:29:25,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-12 10:29:25,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:25,100 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:25,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 10:29:25,100 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:25,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:25,101 INFO L82 PathProgramCache]: Analyzing trace with hash 190723512, now seen corresponding path program 1 times [2020-10-12 10:29:25,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:25,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534041759] [2020-10-12 10:29:25,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:25,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:25,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:25,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:25,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 10:29:25,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:25,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-12 10:29:25,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:25,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:25,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-12 10:29:25,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:29:25,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:25,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:25,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:25,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:25,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:25,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:25,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:25,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:25,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:25,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:25,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:25,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:25,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:25,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:25,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:25,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:25,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:25,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:25,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:25,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:25,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:25,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:25,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:25,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:25,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:25,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:29:25,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:25,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:25,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:25,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:25,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:25,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:25,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:25,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:25,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:29:25,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:25,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:25,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:29:25,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:25,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:25,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:25,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:25,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:25,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:25,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:25,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:25,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:29:25,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:25,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:25,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 10:29:25,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:25,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:25,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:25,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:25,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:25,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:25,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:25,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:25,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:29:25,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:25,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:25,233 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-12 10:29:25,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534041759] [2020-10-12 10:29:25,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:29:25,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 10:29:25,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649348428] [2020-10-12 10:29:25,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 10:29:25,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:25,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 10:29:25,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 10:29:25,236 INFO L87 Difference]: Start difference. First operand 154 states and 183 transitions. Second operand 4 states. [2020-10-12 10:29:25,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:25,361 INFO L93 Difference]: Finished difference Result 195 states and 232 transitions. [2020-10-12 10:29:25,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 10:29:25,362 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-10-12 10:29:25,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:25,363 INFO L225 Difference]: With dead ends: 195 [2020-10-12 10:29:25,363 INFO L226 Difference]: Without dead ends: 160 [2020-10-12 10:29:25,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 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 10:29:25,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-12 10:29:25,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 154. [2020-10-12 10:29:25,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-12 10:29:25,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 181 transitions. [2020-10-12 10:29:25,400 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 181 transitions. Word has length 61 [2020-10-12 10:29:25,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:25,401 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 181 transitions. [2020-10-12 10:29:25,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 10:29:25,401 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 181 transitions. [2020-10-12 10:29:25,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-12 10:29:25,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:25,402 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:25,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 10:29:25,403 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:25,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:25,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1366201288, now seen corresponding path program 2 times [2020-10-12 10:29:25,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:25,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078038466] [2020-10-12 10:29:25,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:25,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:25,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:25,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:25,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 10:29:25,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:25,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-12 10:29:25,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:25,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:25,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-12 10:29:25,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:29:25,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:25,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:25,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:25,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:25,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:25,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:25,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:25,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:25,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:25,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:25,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:25,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:25,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:25,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:25,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:25,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:25,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:25,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:25,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:25,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:25,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:25,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:25,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:25,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:25,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:29:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:25,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:25,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:25,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:25,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:25,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:25,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:25,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:25,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:29:25,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:25,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:25,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:29:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:25,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:25,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:25,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:25,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:25,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:25,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:25,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:25,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:29:25,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:25,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:25,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 10:29:25,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:25,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:25,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:25,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:25,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:25,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:25,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:25,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:25,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:29:25,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:25,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:25,535 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-12 10:29:25,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078038466] [2020-10-12 10:29:25,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:29:25,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 10:29:25,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518482698] [2020-10-12 10:29:25,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 10:29:25,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:25,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 10:29:25,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 10:29:25,538 INFO L87 Difference]: Start difference. First operand 154 states and 181 transitions. Second operand 4 states. [2020-10-12 10:29:25,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:25,665 INFO L93 Difference]: Finished difference Result 193 states and 226 transitions. [2020-10-12 10:29:25,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 10:29:25,666 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-10-12 10:29:25,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:25,667 INFO L225 Difference]: With dead ends: 193 [2020-10-12 10:29:25,667 INFO L226 Difference]: Without dead ends: 158 [2020-10-12 10:29:25,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 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 10:29:25,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-12 10:29:25,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 147. [2020-10-12 10:29:25,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-12 10:29:25,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 172 transitions. [2020-10-12 10:29:25,698 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 172 transitions. Word has length 61 [2020-10-12 10:29:25,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:25,698 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 172 transitions. [2020-10-12 10:29:25,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 10:29:25,698 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 172 transitions. [2020-10-12 10:29:25,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 10:29:25,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:25,699 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:25,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 10:29:25,700 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:25,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:25,700 INFO L82 PathProgramCache]: Analyzing trace with hash 216548224, now seen corresponding path program 4 times [2020-10-12 10:29:25,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:25,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916403216] [2020-10-12 10:29:25,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:25,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:25,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:26,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:26,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 10:29:26,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:29:26,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 550 [2020-10-12 10:29:26,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:26,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 10:29:26,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 10:29:26,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 10:29:26,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:26,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:26,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:26,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:26,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:26,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:26,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:26,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:26,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:26,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:26,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:26,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:26,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:26,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:26,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:26,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:26,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:26,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:26,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 10:29:26,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:26,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:29:26,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:26,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:29:26,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:26,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-12 10:29:26,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:26,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:26,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:26,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:26,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:26,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:29:26,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:26,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:26,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:26,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:26,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:26,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-12 10:29:26,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:26,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:26,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:26,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:26,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:26,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:29:26,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:26,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:26,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:26,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:26,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:26,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 10:29:26,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:26,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:26,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:26,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:26,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:26,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:29:26,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:26,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:26,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:26,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:26,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:26,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 10:29:26,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:26,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:26,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:26,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:26,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:26,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:29:26,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:26,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:26,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:26,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:26,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:26,870 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-12 10:29:26,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [916403216] [2020-10-12 10:29:26,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:26,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 10:29:26,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506478452] [2020-10-12 10:29:26,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 10:29:26,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:26,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 10:29:26,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-10-12 10:29:26,872 INFO L87 Difference]: Start difference. First operand 147 states and 172 transitions. Second operand 14 states. [2020-10-12 10:29:27,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:27,640 INFO L93 Difference]: Finished difference Result 292 states and 338 transitions. [2020-10-12 10:29:27,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 10:29:27,641 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 64 [2020-10-12 10:29:27,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:27,642 INFO L225 Difference]: With dead ends: 292 [2020-10-12 10:29:27,642 INFO L226 Difference]: Without dead ends: 187 [2020-10-12 10:29:27,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2020-10-12 10:29:27,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-12 10:29:27,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 162. [2020-10-12 10:29:27,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-12 10:29:27,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 187 transitions. [2020-10-12 10:29:27,673 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 187 transitions. Word has length 64 [2020-10-12 10:29:27,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:27,673 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 187 transitions. [2020-10-12 10:29:27,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 10:29:27,673 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 187 transitions. [2020-10-12 10:29:27,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 10:29:27,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:27,674 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:27,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 10:29:27,675 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:27,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:27,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1114102835, now seen corresponding path program 5 times [2020-10-12 10:29:27,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:27,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287828419] [2020-10-12 10:29:27,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:27,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:28,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:28,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 10:29:28,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:28,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 382 [2020-10-12 10:29:28,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:28,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 10:29:28,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:29:28,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 10:29:28,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:28,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:28,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:28,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:28,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:28,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:28,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:28,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:28,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:28,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:28,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:28,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:28,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:28,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:28,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:28,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:28,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:28,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:28,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:28,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:28,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:28,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:28,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:28,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:28,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:28,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:29:28,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:28,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:28,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:28,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:28,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:28,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:28,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:28,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:28,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:28,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:28,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:28,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:29:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:28,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:28,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:28,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:28,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:28,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:29:28,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:28,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:28,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:28,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:28,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:28,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 10:29:28,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:28,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:28,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:28,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:28,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:28,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:29:28,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:28,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:28,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:28,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:28,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:28,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-12 10:29:28,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:28,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:28,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:28,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:28,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:28,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:28,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:28,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:28,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:28,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:28,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:28,276 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 12 proven. 46 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-12 10:29:28,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287828419] [2020-10-12 10:29:28,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:28,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 10:29:28,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974434713] [2020-10-12 10:29:28,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 10:29:28,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:28,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 10:29:28,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-12 10:29:28,278 INFO L87 Difference]: Start difference. First operand 162 states and 187 transitions. Second operand 13 states. [2020-10-12 10:29:29,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:29,779 INFO L93 Difference]: Finished difference Result 293 states and 340 transitions. [2020-10-12 10:29:29,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-12 10:29:29,780 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 70 [2020-10-12 10:29:29,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:29,785 INFO L225 Difference]: With dead ends: 293 [2020-10-12 10:29:29,785 INFO L226 Difference]: Without dead ends: 277 [2020-10-12 10:29:29,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=318, Invalid=1574, Unknown=0, NotChecked=0, Total=1892 [2020-10-12 10:29:29,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-10-12 10:29:29,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 184. [2020-10-12 10:29:29,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-12 10:29:29,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 217 transitions. [2020-10-12 10:29:29,833 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 217 transitions. Word has length 70 [2020-10-12 10:29:29,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:29,833 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 217 transitions. [2020-10-12 10:29:29,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 10:29:29,833 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 217 transitions. [2020-10-12 10:29:29,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 10:29:29,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:29,838 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:29,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 10:29:29,839 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:29,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:29,839 INFO L82 PathProgramCache]: Analyzing trace with hash -480378415, now seen corresponding path program 1 times [2020-10-12 10:29:29,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:29,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507813770] [2020-10-12 10:29:29,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:29,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:29,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:29,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:30,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:31,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:32,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:34,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:34,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 10:29:34,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 10:29:34,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 10:29:34,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:34,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 10:29:34,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:29:34,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 10:29:34,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:35,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:35,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:35,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:35,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:35,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:35,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:35,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:29:35,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:35,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:35,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:35,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:35,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:35,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:35,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:35,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:35,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:35,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:35,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:35,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:29:35,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:35,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:35,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:35,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:35,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:35,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:29:35,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:35,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:35,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:35,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:35,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:35,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:29:35,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:35,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:35,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:35,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:35,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:35,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:29:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:35,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:35,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:35,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:35,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:35,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:29:35,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:35,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:35,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:35,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:35,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:35,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 10:29:35,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:35,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:35,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:35,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:35,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:35,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:29:35,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:35,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:29:35,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:29:35,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:35,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:35,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-12 10:29:35,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:35,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:35,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:35,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:35,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:35,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:35,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:35,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:35,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:29:35,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:35,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:35,322 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 40 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-12 10:29:35,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507813770] [2020-10-12 10:29:35,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:35,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 10:29:35,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150763247] [2020-10-12 10:29:35,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 10:29:35,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:35,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 10:29:35,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-12 10:29:35,332 INFO L87 Difference]: Start difference. First operand 184 states and 217 transitions. Second operand 15 states. [2020-10-12 10:29:36,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:36,625 INFO L93 Difference]: Finished difference Result 253 states and 300 transitions. [2020-10-12 10:29:36,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 10:29:36,626 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 70 [2020-10-12 10:29:36,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:36,627 INFO L225 Difference]: With dead ends: 253 [2020-10-12 10:29:36,628 INFO L226 Difference]: Without dead ends: 227 [2020-10-12 10:29:36,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=171, Invalid=641, Unknown=0, NotChecked=0, Total=812 [2020-10-12 10:29:36,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-12 10:29:36,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 183. [2020-10-12 10:29:36,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-12 10:29:36,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 214 transitions. [2020-10-12 10:29:36,664 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 214 transitions. Word has length 70 [2020-10-12 10:29:36,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:36,664 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 214 transitions. [2020-10-12 10:29:36,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 10:29:36,665 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 214 transitions. [2020-10-12 10:29:36,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 10:29:36,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:36,668 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:36,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 10:29:36,668 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:36,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:36,669 INFO L82 PathProgramCache]: Analyzing trace with hash 2009150547, now seen corresponding path program 2 times [2020-10-12 10:29:36,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:36,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096336805] [2020-10-12 10:29:36,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:36,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:36,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:36,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:36,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:36,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:37,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:37,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:37,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:37,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:37,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:38,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:38,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:39,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:41,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:41,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 10:29:41,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 10:29:41,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 10:29:41,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:41,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 10:29:41,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:29:41,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 10:29:41,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:41,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:41,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:41,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:41,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:41,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:41,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:41,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:41,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:41,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:41,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:41,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:41,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:41,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:41,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:41,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:41,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:41,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:41,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:41,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:41,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:41,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:41,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:41,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:41,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:29:41,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:41,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:41,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:41,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:41,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:41,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:29:41,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:41,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:29:41,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:41,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:29:41,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:41,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:29:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:41,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:41,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:41,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:41,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:41,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:41,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:41,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:41,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:41,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:41,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:41,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 10:29:41,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:41,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:41,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:41,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:41,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:41,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:29:41,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:41,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:29:41,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:29:41,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:41,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:41,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-12 10:29:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:41,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:41,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:41,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:41,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:41,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:41,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:41,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:41,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:29:41,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:41,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:41,919 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 40 proven. 20 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-12 10:29:41,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096336805] [2020-10-12 10:29:41,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:41,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 10:29:41,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827835757] [2020-10-12 10:29:41,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 10:29:41,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:41,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 10:29:41,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-12 10:29:41,921 INFO L87 Difference]: Start difference. First operand 183 states and 214 transitions. Second operand 13 states. [2020-10-12 10:29:42,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:42,562 INFO L93 Difference]: Finished difference Result 240 states and 280 transitions. [2020-10-12 10:29:42,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 10:29:42,563 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 70 [2020-10-12 10:29:42,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:42,564 INFO L225 Difference]: With dead ends: 240 [2020-10-12 10:29:42,565 INFO L226 Difference]: Without dead ends: 187 [2020-10-12 10:29:42,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650 [2020-10-12 10:29:42,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-12 10:29:42,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 181. [2020-10-12 10:29:42,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-12 10:29:42,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 208 transitions. [2020-10-12 10:29:42,598 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 208 transitions. Word has length 70 [2020-10-12 10:29:42,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:42,599 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 208 transitions. [2020-10-12 10:29:42,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 10:29:42,599 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 208 transitions. [2020-10-12 10:29:42,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 10:29:42,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:42,600 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:42,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 10:29:42,601 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:42,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:42,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1862170027, now seen corresponding path program 3 times [2020-10-12 10:29:42,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:42,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606692828] [2020-10-12 10:29:42,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:42,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:42,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:42,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:42,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:42,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:42,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:44,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:44,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:44,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:44,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:45,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:47,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:47,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:47,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 10:29:47,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 10:29:47,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 10:29:47,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:47,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 10:29:47,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:29:47,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 10:29:47,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:47,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:47,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:47,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:47,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:47,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:47,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:47,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:47,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:47,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:47,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:47,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:47,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:47,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:47,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:47,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:47,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:47,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:47,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:47,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:47,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:47,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:47,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:47,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:47,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:47,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:29:47,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:47,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:47,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:47,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:47,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:47,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:29:47,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:47,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:29:47,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:47,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:29:47,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:47,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:29:47,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:47,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:47,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:47,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:47,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:47,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:47,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:47,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:47,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:47,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:47,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:47,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 10:29:47,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:47,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:47,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:47,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:47,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:47,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:47,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:47,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:47,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:47,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:47,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:47,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-12 10:29:47,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:47,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:47,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:47,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:47,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:47,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:29:47,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:47,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:29:47,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:29:47,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:47,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:47,962 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 32 proven. 37 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-12 10:29:47,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606692828] [2020-10-12 10:29:47,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:47,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 10:29:47,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238327275] [2020-10-12 10:29:47,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 10:29:47,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:47,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 10:29:47,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2020-10-12 10:29:47,965 INFO L87 Difference]: Start difference. First operand 181 states and 208 transitions. Second operand 17 states. [2020-10-12 10:29:48,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:48,744 INFO L93 Difference]: Finished difference Result 210 states and 242 transitions. [2020-10-12 10:29:48,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 10:29:48,744 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 70 [2020-10-12 10:29:48,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:48,746 INFO L225 Difference]: With dead ends: 210 [2020-10-12 10:29:48,747 INFO L226 Difference]: Without dead ends: 194 [2020-10-12 10:29:48,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=646, Unknown=0, NotChecked=0, Total=756 [2020-10-12 10:29:48,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-12 10:29:48,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 181. [2020-10-12 10:29:48,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-12 10:29:48,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 207 transitions. [2020-10-12 10:29:48,780 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 207 transitions. Word has length 70 [2020-10-12 10:29:48,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:48,780 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 207 transitions. [2020-10-12 10:29:48,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 10:29:48,780 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 207 transitions. [2020-10-12 10:29:48,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 10:29:48,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:48,782 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:48,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 10:29:48,782 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:48,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:48,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1421680019, now seen corresponding path program 4 times [2020-10-12 10:29:48,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:48,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553260316] [2020-10-12 10:29:48,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:48,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:48,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:49,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:49,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 10:29:49,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:49,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-10-12 10:29:49,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:49,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 10:29:49,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:29:49,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 10:29:49,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:49,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:49,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:49,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:49,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:49,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:49,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:49,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:49,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:49,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:49,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:49,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:49,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:49,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:49,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:49,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:49,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:49,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:49,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:49,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:49,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:49,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:49,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:49,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:49,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:49,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:29:49,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:49,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:49,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:49,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:49,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:49,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:49,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:49,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:49,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:49,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:49,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:49,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:29:49,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:49,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:49,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:49,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:49,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:49,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:49,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:49,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:49,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:49,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:49,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:49,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 10:29:49,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:49,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:49,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:49,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:49,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:49,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:49,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:49,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:49,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:49,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:49,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:49,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-12 10:29:49,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:49,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:49,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:49,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:49,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:49,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:29:49,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:49,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:49,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:49,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:49,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:49,357 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 8 proven. 50 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-12 10:29:49,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553260316] [2020-10-12 10:29:49,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:49,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 10:29:49,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162939322] [2020-10-12 10:29:49,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 10:29:49,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:49,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 10:29:49,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-12 10:29:49,360 INFO L87 Difference]: Start difference. First operand 181 states and 207 transitions. Second operand 15 states. [2020-10-12 10:29:51,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:51,281 INFO L93 Difference]: Finished difference Result 278 states and 317 transitions. [2020-10-12 10:29:51,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-12 10:29:51,281 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 70 [2020-10-12 10:29:51,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:51,283 INFO L225 Difference]: With dead ends: 278 [2020-10-12 10:29:51,283 INFO L226 Difference]: Without dead ends: 276 [2020-10-12 10:29:51,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=262, Invalid=1544, Unknown=0, NotChecked=0, Total=1806 [2020-10-12 10:29:51,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-10-12 10:29:51,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 190. [2020-10-12 10:29:51,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-10-12 10:29:51,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 217 transitions. [2020-10-12 10:29:51,316 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 217 transitions. Word has length 70 [2020-10-12 10:29:51,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:51,317 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 217 transitions. [2020-10-12 10:29:51,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 10:29:51,317 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 217 transitions. [2020-10-12 10:29:51,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 10:29:51,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:51,318 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:51,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-12 10:29:51,319 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:51,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:51,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1067407510, now seen corresponding path program 6 times [2020-10-12 10:29:51,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:51,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672744629] [2020-10-12 10:29:51,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:51,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:51,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:51,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:51,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-12 10:29:51,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:51,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-12 10:29:51,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:51,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 10:29:51,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:29:51,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 10:29:51,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:51,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:51,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:51,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:51,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:51,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:51,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:51,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:51,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:51,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:51,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:51,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:51,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:51,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:51,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:51,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:51,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:51,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:51,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:51,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:51,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:51,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:51,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:51,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:51,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:51,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:29:51,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:51,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:51,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:51,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:51,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:51,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:51,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:51,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:51,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:51,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:51,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:51,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:29:51,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:51,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:51,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:51,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:51,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:51,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:29:51,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:51,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:51,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:51,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:51,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:51,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 10:29:51,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:51,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:51,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:51,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:51,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:51,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:51,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:51,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:51,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:51,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:51,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:29:51,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-12 10:29:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:51,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:51,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:51,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:51,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:51,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:51,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:51,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:51,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:51,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:51,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:51,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 10:29:51,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:51,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:51,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:51,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:51,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:51,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:51,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:51,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:51,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:51,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:51,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:51,789 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 15 proven. 68 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-12 10:29:51,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672744629] [2020-10-12 10:29:51,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:51,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 10:29:51,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442537928] [2020-10-12 10:29:51,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 10:29:51,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:51,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 10:29:51,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-12 10:29:51,792 INFO L87 Difference]: Start difference. First operand 190 states and 217 transitions. Second operand 14 states. [2020-10-12 10:29:53,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:29:53,569 INFO L93 Difference]: Finished difference Result 325 states and 373 transitions. [2020-10-12 10:29:53,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-12 10:29:53,570 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 79 [2020-10-12 10:29:53,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:29:53,571 INFO L225 Difference]: With dead ends: 325 [2020-10-12 10:29:53,572 INFO L226 Difference]: Without dead ends: 309 [2020-10-12 10:29:53,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=375, Invalid=1977, Unknown=0, NotChecked=0, Total=2352 [2020-10-12 10:29:53,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-12 10:29:53,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 211. [2020-10-12 10:29:53,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-12 10:29:53,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 244 transitions. [2020-10-12 10:29:53,624 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 244 transitions. Word has length 79 [2020-10-12 10:29:53,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:29:53,624 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 244 transitions. [2020-10-12 10:29:53,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 10:29:53,625 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 244 transitions. [2020-10-12 10:29:53,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 10:29:53,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:29:53,631 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:29:53,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-12 10:29:53,632 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:29:53,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:29:53,635 INFO L82 PathProgramCache]: Analyzing trace with hash 51845140, now seen corresponding path program 1 times [2020-10-12 10:29:53,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:29:53,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673238560] [2020-10-12 10:29:53,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:29:53,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:53,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:53,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:53,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:53,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:53,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:54,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:54,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:56,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:58,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:58,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-12 10:29:58,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 10:29:58,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 10:29:58,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:58,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 10:29:58,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:29:58,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 10:29:58,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:58,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:29:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:58,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:58,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:58,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:29:58,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:58,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:58,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:58,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:58,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:58,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:58,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:58,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:29:58,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:58,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:58,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:58,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:58,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:58,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:58,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:58,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:58,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:58,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:58,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:58,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:29:58,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:58,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:58,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:58,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:58,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:58,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:58,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:58,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:58,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:58,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:58,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:58,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:29:58,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:58,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:58,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:58,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:58,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:58,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:58,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:58,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:58,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:58,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:58,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:58,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 10:29:58,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:58,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:58,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:58,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:58,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:58,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:29:58,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:58,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:58,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:58,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:58,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:58,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-12 10:29:58,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:58,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:58,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:58,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:58,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:58,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:29:58,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:58,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:29:58,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:29:58,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:29:58,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:58,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 10:29:58,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:29:58,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:29:58,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:29:58,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:29:58,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:29:58,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:29:58,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:29:58,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:29:58,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:29:58,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:29:58,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:29:58,993 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 36 proven. 46 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-10-12 10:29:58,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673238560] [2020-10-12 10:29:58,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:29:58,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 10:29:58,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920810951] [2020-10-12 10:29:58,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 10:29:58,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:29:58,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 10:29:58,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-10-12 10:29:58,995 INFO L87 Difference]: Start difference. First operand 211 states and 244 transitions. Second operand 16 states. [2020-10-12 10:30:00,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:30:00,083 INFO L93 Difference]: Finished difference Result 259 states and 297 transitions. [2020-10-12 10:30:00,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 10:30:00,083 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2020-10-12 10:30:00,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:30:00,085 INFO L225 Difference]: With dead ends: 259 [2020-10-12 10:30:00,085 INFO L226 Difference]: Without dead ends: 238 [2020-10-12 10:30:00,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=96, Invalid=606, Unknown=0, NotChecked=0, Total=702 [2020-10-12 10:30:00,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-12 10:30:00,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 211. [2020-10-12 10:30:00,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-12 10:30:00,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 242 transitions. [2020-10-12 10:30:00,118 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 242 transitions. Word has length 79 [2020-10-12 10:30:00,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:30:00,119 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 242 transitions. [2020-10-12 10:30:00,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 10:30:00,119 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 242 transitions. [2020-10-12 10:30:00,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 10:30:00,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:30:00,120 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:30:00,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-12 10:30:00,121 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:30:00,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:30:00,121 INFO L82 PathProgramCache]: Analyzing trace with hash -959272110, now seen corresponding path program 2 times [2020-10-12 10:30:00,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:30:00,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1298724754] [2020-10-12 10:30:00,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:30:00,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:00,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:00,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:00,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:00,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:00,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:00,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:00,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:01,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:01,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:04,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:04,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:04,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:04,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:04,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:04,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:04,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:05,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:05,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:05,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-12 10:30:05,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 10:30:05,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 10:30:05,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:05,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 10:30:05,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:30:05,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 10:30:05,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:05,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:30:05,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:05,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:05,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:05,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:30:05,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:05,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:05,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:05,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:05,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:05,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:05,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:05,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:30:05,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:05,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:05,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:05,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:05,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:05,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:05,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:05,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:05,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:05,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:05,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:05,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:30:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:05,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:05,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:05,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:05,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:05,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:05,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:05,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:05,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:05,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:05,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:05,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:30:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:05,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:05,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:05,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:05,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:05,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:30:05,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:05,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:30:05,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:05,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:30:05,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:05,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 10:30:05,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:05,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:05,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:05,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:05,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:05,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:05,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:05,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:05,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:05,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:05,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:05,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-12 10:30:05,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:05,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:05,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:05,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:05,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:05,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:05,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:05,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:05,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:05,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:05,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:05,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 10:30:05,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:05,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:05,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:05,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:05,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:05,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:30:05,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:05,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:05,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:30:05,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:05,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:05,536 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 39 proven. 55 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-12 10:30:05,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1298724754] [2020-10-12 10:30:05,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:30:05,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 10:30:05,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813662606] [2020-10-12 10:30:05,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 10:30:05,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:30:05,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 10:30:05,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2020-10-12 10:30:05,538 INFO L87 Difference]: Start difference. First operand 211 states and 242 transitions. Second operand 18 states. [2020-10-12 10:30:06,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:30:06,702 INFO L93 Difference]: Finished difference Result 257 states and 294 transitions. [2020-10-12 10:30:06,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 10:30:06,702 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 79 [2020-10-12 10:30:06,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:30:06,703 INFO L225 Difference]: With dead ends: 257 [2020-10-12 10:30:06,704 INFO L226 Difference]: Without dead ends: 221 [2020-10-12 10:30:06,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 16 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=142, Invalid=1048, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 10:30:06,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-12 10:30:06,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 210. [2020-10-12 10:30:06,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-10-12 10:30:06,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 239 transitions. [2020-10-12 10:30:06,740 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 239 transitions. Word has length 79 [2020-10-12 10:30:06,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:30:06,741 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 239 transitions. [2020-10-12 10:30:06,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 10:30:06,741 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 239 transitions. [2020-10-12 10:30:06,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 10:30:06,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:30:06,743 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:30:06,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-12 10:30:06,743 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:30:06,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:30:06,743 INFO L82 PathProgramCache]: Analyzing trace with hash -535625388, now seen corresponding path program 1 times [2020-10-12 10:30:06,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:30:06,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465382045] [2020-10-12 10:30:06,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:30:06,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:06,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:07,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:07,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-12 10:30:07,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:07,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-12 10:30:07,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:07,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 10:30:07,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:30:07,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 10:30:07,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:07,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:30:07,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:07,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:07,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:07,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:30:07,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:07,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:07,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:07,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:07,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:07,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:07,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:07,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:30:07,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:07,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:07,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:07,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:07,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:07,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:07,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:07,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:07,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:07,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:07,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:07,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:30:07,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:07,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:07,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:07,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:07,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:07,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:07,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:07,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:07,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:07,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:07,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:07,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:30:07,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:07,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:07,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:07,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:07,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:07,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:07,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:07,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:07,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:07,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:07,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:07,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 10:30:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:07,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:07,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:07,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:07,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:07,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:07,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:07,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:07,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:07,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:07,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:07,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-12 10:30:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:07,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:07,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:07,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:07,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:07,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:07,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:07,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:07,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:07,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:07,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:07,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 10:30:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:07,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:07,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:07,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:07,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:07,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:07,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:07,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:07,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:07,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:07,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:07,284 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 10 proven. 73 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-12 10:30:07,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465382045] [2020-10-12 10:30:07,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:30:07,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 10:30:07,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419981118] [2020-10-12 10:30:07,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 10:30:07,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:30:07,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 10:30:07,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-12 10:30:07,287 INFO L87 Difference]: Start difference. First operand 210 states and 239 transitions. Second operand 16 states. [2020-10-12 10:30:09,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:30:09,397 INFO L93 Difference]: Finished difference Result 322 states and 366 transitions. [2020-10-12 10:30:09,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-12 10:30:09,398 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2020-10-12 10:30:09,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:30:09,399 INFO L225 Difference]: With dead ends: 322 [2020-10-12 10:30:09,400 INFO L226 Difference]: Without dead ends: 320 [2020-10-12 10:30:09,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=364, Invalid=2392, Unknown=0, NotChecked=0, Total=2756 [2020-10-12 10:30:09,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-10-12 10:30:09,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 219. [2020-10-12 10:30:09,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-12 10:30:09,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 249 transitions. [2020-10-12 10:30:09,435 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 249 transitions. Word has length 79 [2020-10-12 10:30:09,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:30:09,435 INFO L479 AbstractCegarLoop]: Abstraction has 219 states and 249 transitions. [2020-10-12 10:30:09,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 10:30:09,435 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 249 transitions. [2020-10-12 10:30:09,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-12 10:30:09,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:30:09,437 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:30:09,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-12 10:30:09,437 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:30:09,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:30:09,437 INFO L82 PathProgramCache]: Analyzing trace with hash -836995603, now seen corresponding path program 7 times [2020-10-12 10:30:09,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:30:09,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841894388] [2020-10-12 10:30:09,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:30:09,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:09,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:09,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:09,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 10:30:09,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:09,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-12 10:30:09,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:09,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 10:30:09,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:30:09,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-12 10:30:09,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:09,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:30:09,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:09,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:09,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:09,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:30:09,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:09,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:09,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:09,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:09,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:09,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:09,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:09,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:30:09,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:09,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:09,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:09,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:09,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:09,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:09,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:09,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:09,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:09,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:09,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:09,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:30:09,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:09,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:09,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:09,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:09,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:09,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:09,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:09,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:09,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:09,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:09,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:09,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:30:09,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:09,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:09,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:09,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:09,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:09,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:09,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:09,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:09,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:09,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:09,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:09,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 10:30:09,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:09,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:09,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:09,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:09,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:09,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:09,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:09,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:09,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:09,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:09,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:09,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-12 10:30:09,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:09,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:09,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:09,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:09,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:09,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:09,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:09,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:09,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:09,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:09,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:09,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 10:30:09,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:09,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:09,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:09,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:09,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:09,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:09,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:09,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:09,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:09,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:09,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:09,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-12 10:30:09,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:09,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:09,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:09,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:09,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:09,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:09,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:09,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:09,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:09,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:09,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:09,897 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 18 proven. 95 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-12 10:30:09,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841894388] [2020-10-12 10:30:09,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:30:09,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 10:30:09,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413006848] [2020-10-12 10:30:09,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 10:30:09,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:30:09,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 10:30:09,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-12 10:30:09,899 INFO L87 Difference]: Start difference. First operand 219 states and 249 transitions. Second operand 15 states. [2020-10-12 10:30:11,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:30:11,747 INFO L93 Difference]: Finished difference Result 354 states and 405 transitions. [2020-10-12 10:30:11,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-12 10:30:11,748 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 88 [2020-10-12 10:30:11,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:30:11,751 INFO L225 Difference]: With dead ends: 354 [2020-10-12 10:30:11,751 INFO L226 Difference]: Without dead ends: 338 [2020-10-12 10:30:11,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=364, Invalid=2186, Unknown=0, NotChecked=0, Total=2550 [2020-10-12 10:30:11,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-10-12 10:30:11,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 230. [2020-10-12 10:30:11,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-12 10:30:11,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 264 transitions. [2020-10-12 10:30:11,785 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 264 transitions. Word has length 88 [2020-10-12 10:30:11,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:30:11,785 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 264 transitions. [2020-10-12 10:30:11,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 10:30:11,785 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 264 transitions. [2020-10-12 10:30:11,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-12 10:30:11,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:30:11,787 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:30:11,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-12 10:30:11,787 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:30:11,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:30:11,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1636461203, now seen corresponding path program 1 times [2020-10-12 10:30:11,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:30:11,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [580921400] [2020-10-12 10:30:11,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:30:11,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:11,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:11,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:11,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:11,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:12,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:16,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:16,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 10:30:16,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 10:30:16,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 10:30:16,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:16,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 10:30:16,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:30:16,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 10:30:16,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:17,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:30:17,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:17,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:17,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:17,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:30:17,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:17,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:17,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:17,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:17,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:17,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:17,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:17,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:30:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:17,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:17,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:17,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:17,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:17,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:17,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:17,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:17,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:17,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:17,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:17,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:30:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:17,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:17,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:17,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:17,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:17,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:17,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:17,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:17,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:17,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:17,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:17,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:30:17,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:17,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:17,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:17,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:17,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:17,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:17,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:17,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:17,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:17,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:17,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:17,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 10:30:17,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:17,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:17,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:17,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:17,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:17,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:17,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:17,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:17,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:17,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:17,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:17,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-12 10:30:17,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:17,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:17,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:17,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:17,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:17,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:17,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:17,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:30:17,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:30:17,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:17,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:17,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 10:30:17,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:17,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:17,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:17,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:17,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:17,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:17,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:17,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:17,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:30:17,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:17,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:17,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-12 10:30:17,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:17,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:17,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:17,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:17,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:17,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:30:17,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:17,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:17,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:30:17,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:17,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:17,146 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 75 proven. 38 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-12 10:30:17,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [580921400] [2020-10-12 10:30:17,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:30:17,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 10:30:17,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781960486] [2020-10-12 10:30:17,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 10:30:17,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:30:17,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 10:30:17,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-10-12 10:30:17,148 INFO L87 Difference]: Start difference. First operand 230 states and 264 transitions. Second operand 16 states. [2020-10-12 10:30:18,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:30:18,169 INFO L93 Difference]: Finished difference Result 322 states and 372 transitions. [2020-10-12 10:30:18,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 10:30:18,170 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 88 [2020-10-12 10:30:18,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:30:18,173 INFO L225 Difference]: With dead ends: 322 [2020-10-12 10:30:18,173 INFO L226 Difference]: Without dead ends: 296 [2020-10-12 10:30:18,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=143, Invalid=613, Unknown=0, NotChecked=0, Total=756 [2020-10-12 10:30:18,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-10-12 10:30:18,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 230. [2020-10-12 10:30:18,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-12 10:30:18,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 263 transitions. [2020-10-12 10:30:18,220 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 263 transitions. Word has length 88 [2020-10-12 10:30:18,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:30:18,220 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 263 transitions. [2020-10-12 10:30:18,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 10:30:18,221 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 263 transitions. [2020-10-12 10:30:18,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-12 10:30:18,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:30:18,222 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:30:18,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-12 10:30:18,223 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:30:18,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:30:18,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1361701589, now seen corresponding path program 2 times [2020-10-12 10:30:18,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:30:18,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1073452389] [2020-10-12 10:30:18,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:30:18,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:18,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:18,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:18,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:18,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:18,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:18,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:19,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:23,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:23,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 10:30:23,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 10:30:23,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 10:30:23,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:23,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 10:30:23,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:30:23,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 10:30:23,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:23,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:30:23,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:23,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:23,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:23,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:30:23,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:23,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:23,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:23,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:23,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:23,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:23,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:23,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:30:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:23,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:23,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:23,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:23,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:23,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:23,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:23,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:23,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:23,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:23,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:23,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:30:23,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:23,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:23,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:23,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:23,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:23,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:23,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:23,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:23,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:23,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:23,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:23,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:30:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:23,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:23,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:23,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:23,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:23,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:23,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:23,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:23,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:23,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:23,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:23,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 10:30:23,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:23,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:23,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:23,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:23,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:23,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:23,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:23,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:30:23,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:23,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:30:23,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:23,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-12 10:30:23,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:23,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:23,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:23,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:23,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:23,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:23,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:23,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:30:23,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:30:23,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:23,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:23,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 10:30:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:23,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:23,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:23,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:23,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:23,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:23,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:23,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:23,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:30:23,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:23,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:23,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-12 10:30:23,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:23,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:23,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:23,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:23,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:23,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:30:23,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:23,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:23,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:30:23,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:23,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:23,488 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 79 proven. 41 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-10-12 10:30:23,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1073452389] [2020-10-12 10:30:23,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:30:23,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 10:30:23,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218231795] [2020-10-12 10:30:23,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 10:30:23,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:30:23,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 10:30:23,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-10-12 10:30:23,490 INFO L87 Difference]: Start difference. First operand 230 states and 263 transitions. Second operand 16 states. [2020-10-12 10:30:24,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:30:24,639 INFO L93 Difference]: Finished difference Result 310 states and 353 transitions. [2020-10-12 10:30:24,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-12 10:30:24,639 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 88 [2020-10-12 10:30:24,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:30:24,641 INFO L225 Difference]: With dead ends: 310 [2020-10-12 10:30:24,641 INFO L226 Difference]: Without dead ends: 277 [2020-10-12 10:30:24,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=213, Invalid=1193, Unknown=0, NotChecked=0, Total=1406 [2020-10-12 10:30:24,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-10-12 10:30:24,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 229. [2020-10-12 10:30:24,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-12 10:30:24,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 260 transitions. [2020-10-12 10:30:24,683 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 260 transitions. Word has length 88 [2020-10-12 10:30:24,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:30:24,684 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 260 transitions. [2020-10-12 10:30:24,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 10:30:24,684 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 260 transitions. [2020-10-12 10:30:24,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-12 10:30:24,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:30:24,685 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:30:24,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-12 10:30:24,686 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:30:24,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:30:24,686 INFO L82 PathProgramCache]: Analyzing trace with hash -938054867, now seen corresponding path program 3 times [2020-10-12 10:30:24,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:30:24,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241143198] [2020-10-12 10:30:24,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:30:24,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:24,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:24,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:24,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 10:30:24,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:24,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-12 10:30:24,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:24,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 10:30:24,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:30:24,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 10:30:24,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:25,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:30:25,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:25,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:25,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:25,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:30:25,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:25,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:25,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:25,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:25,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:25,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:25,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:25,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:30:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:25,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:25,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:25,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:25,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:25,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:25,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:25,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:25,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:25,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:25,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:25,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:30:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:25,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:25,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:25,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:25,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:25,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:25,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:25,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:25,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:25,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:25,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:25,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:30:25,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:25,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:25,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:25,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:25,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:25,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:25,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:25,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:25,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:25,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:25,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:25,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 10:30:25,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:25,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:25,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:25,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:25,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:25,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:25,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:25,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:25,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:25,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:25,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:25,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-12 10:30:25,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:25,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:25,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:25,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:25,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:25,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:25,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:25,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:25,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:25,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:25,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:25,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 10:30:25,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:25,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:25,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:25,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:25,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:25,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:25,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:25,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:25,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:25,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:25,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:25,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-12 10:30:25,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:25,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:25,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:25,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:25,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:25,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:25,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:25,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:25,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:25,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:25,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:25,234 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 12 proven. 101 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-12 10:30:25,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241143198] [2020-10-12 10:30:25,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:30:25,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 10:30:25,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403518363] [2020-10-12 10:30:25,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 10:30:25,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:30:25,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 10:30:25,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-12 10:30:25,236 INFO L87 Difference]: Start difference. First operand 229 states and 260 transitions. Second operand 17 states. [2020-10-12 10:30:27,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:30:27,721 INFO L93 Difference]: Finished difference Result 351 states and 399 transitions. [2020-10-12 10:30:27,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-12 10:30:27,722 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 88 [2020-10-12 10:30:27,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:30:27,724 INFO L225 Difference]: With dead ends: 351 [2020-10-12 10:30:27,724 INFO L226 Difference]: Without dead ends: 349 [2020-10-12 10:30:27,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=424, Invalid=2768, Unknown=0, NotChecked=0, Total=3192 [2020-10-12 10:30:27,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-10-12 10:30:27,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 248. [2020-10-12 10:30:27,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-10-12 10:30:27,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 282 transitions. [2020-10-12 10:30:27,768 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 282 transitions. Word has length 88 [2020-10-12 10:30:27,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:30:27,769 INFO L479 AbstractCegarLoop]: Abstraction has 248 states and 282 transitions. [2020-10-12 10:30:27,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 10:30:27,769 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 282 transitions. [2020-10-12 10:30:27,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-12 10:30:27,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:30:27,770 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:30:27,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-12 10:30:27,771 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:30:27,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:30:27,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1828361610, now seen corresponding path program 8 times [2020-10-12 10:30:27,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:30:27,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126224327] [2020-10-12 10:30:27,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:30:27,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:27,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:28,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:28,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 10:30:28,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:28,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-10-12 10:30:28,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:28,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 10:30:28,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:30:28,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-12 10:30:28,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:28,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:30:28,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:28,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:28,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:28,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:30:28,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:28,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:28,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:28,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:28,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:28,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:28,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:30:28,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:30:28,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:28,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:28,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:28,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:28,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:28,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:28,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:28,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:28,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:28,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:28,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:30:28,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:30:28,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:28,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:28,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:28,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:28,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:28,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:28,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:28,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:28,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:28,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:28,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:28,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:30:28,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:28,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:28,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:28,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:28,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:28,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:28,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:28,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:28,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:28,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:28,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:28,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 10:30:28,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:28,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:28,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:28,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:28,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:28,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:30:28,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:28,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:28,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:28,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:28,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:30:28,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-12 10:30:28,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:28,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:28,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:28,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:28,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:28,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:30:28,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:28,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:28,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:28,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:28,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:30:28,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 10:30:28,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:28,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:28,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:28,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:28,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:28,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:30:28,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:28,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:28,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:28,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:28,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:30:28,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-12 10:30:28,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:28,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:28,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:28,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:28,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:28,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:30:28,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:28,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:28,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:28,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:28,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:30:28,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-12 10:30:28,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:28,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:28,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:28,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:28,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:28,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:30:28,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:28,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:28,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:28,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:28,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:30:28,437 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 21 proven. 127 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-12 10:30:28,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126224327] [2020-10-12 10:30:28,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:30:28,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 10:30:28,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684273144] [2020-10-12 10:30:28,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 10:30:28,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:30:28,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 10:30:28,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-12 10:30:28,440 INFO L87 Difference]: Start difference. First operand 248 states and 282 transitions. Second operand 15 states. [2020-10-12 10:30:30,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:30:30,985 INFO L93 Difference]: Finished difference Result 381 states and 434 transitions. [2020-10-12 10:30:30,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-12 10:30:30,986 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 97 [2020-10-12 10:30:30,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:30:30,989 INFO L225 Difference]: With dead ends: 381 [2020-10-12 10:30:30,989 INFO L226 Difference]: Without dead ends: 365 [2020-10-12 10:30:30,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 761 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=361, Invalid=2609, Unknown=0, NotChecked=0, Total=2970 [2020-10-12 10:30:30,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-10-12 10:30:31,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 253. [2020-10-12 10:30:31,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-10-12 10:30:31,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 288 transitions. [2020-10-12 10:30:31,044 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 288 transitions. Word has length 97 [2020-10-12 10:30:31,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:30:31,044 INFO L479 AbstractCegarLoop]: Abstraction has 253 states and 288 transitions. [2020-10-12 10:30:31,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 10:30:31,045 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 288 transitions. [2020-10-12 10:30:31,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-12 10:30:31,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:30:31,046 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:30:31,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-12 10:30:31,047 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:30:31,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:30:31,047 INFO L82 PathProgramCache]: Analyzing trace with hash 795802874, now seen corresponding path program 2 times [2020-10-12 10:30:31,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:30:31,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [372395894] [2020-10-12 10:30:31,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:30:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:31,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:31,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:31,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:33,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:33,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:35,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:35,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 10:30:35,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 10:30:35,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4035 [2020-10-12 10:30:35,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:35,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 10:30:35,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:30:35,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-12 10:30:35,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:35,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:30:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:35,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:35,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:35,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:30:35,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:35,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:35,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:35,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:35,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:35,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:35,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:35,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:30:35,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:35,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:35,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:35,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:35,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:35,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:35,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:35,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:35,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:35,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:35,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:35,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:30:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:35,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:35,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:35,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:35,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:35,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:35,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:35,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:35,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:35,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:35,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:35,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:30:35,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:35,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:35,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:35,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:35,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:35,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:35,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:35,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:35,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:35,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:35,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:35,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 10:30:35,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:35,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:35,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:35,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:35,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:35,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:35,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:35,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:35,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:35,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:35,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:35,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-12 10:30:35,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:35,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:35,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:35,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:35,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:35,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:35,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:35,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:30:35,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:35,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:30:35,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:35,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 10:30:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:35,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:35,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:35,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:35,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:35,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:35,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:35,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:35,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:35,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:35,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:35,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-12 10:30:35,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:35,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:35,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:35,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:35,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:35,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:35,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:35,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:35,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:35,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:35,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:35,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-12 10:30:35,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:35,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:35,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:35,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:35,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:35,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:35,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:35,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:35,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:35,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:35,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:35,573 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 30 proven. 136 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-12 10:30:35,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [372395894] [2020-10-12 10:30:35,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:30:35,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 10:30:35,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222350286] [2020-10-12 10:30:35,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 10:30:35,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:30:35,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 10:30:35,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2020-10-12 10:30:35,575 INFO L87 Difference]: Start difference. First operand 253 states and 288 transitions. Second operand 20 states. [2020-10-12 10:30:37,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:30:37,701 INFO L93 Difference]: Finished difference Result 351 states and 402 transitions. [2020-10-12 10:30:37,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-12 10:30:37,702 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 97 [2020-10-12 10:30:37,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:30:37,704 INFO L225 Difference]: With dead ends: 351 [2020-10-12 10:30:37,705 INFO L226 Difference]: Without dead ends: 335 [2020-10-12 10:30:37,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=183, Invalid=1709, Unknown=0, NotChecked=0, Total=1892 [2020-10-12 10:30:37,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-10-12 10:30:37,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 253. [2020-10-12 10:30:37,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-10-12 10:30:37,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 288 transitions. [2020-10-12 10:30:37,761 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 288 transitions. Word has length 97 [2020-10-12 10:30:37,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:30:37,763 INFO L479 AbstractCegarLoop]: Abstraction has 253 states and 288 transitions. [2020-10-12 10:30:37,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 10:30:37,764 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 288 transitions. [2020-10-12 10:30:37,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-12 10:30:37,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:30:37,765 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:30:37,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-12 10:30:37,766 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:30:37,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:30:37,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1219449596, now seen corresponding path program 3 times [2020-10-12 10:30:37,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:30:37,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1018376369] [2020-10-12 10:30:37,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:30:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:37,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:38,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:38,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 10:30:38,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:38,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-12 10:30:38,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:38,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 10:30:38,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:30:38,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-12 10:30:38,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:38,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:30:38,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:38,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:38,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:38,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:30:38,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:38,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:38,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:38,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:38,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:38,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:38,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:38,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:30:38,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:38,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:38,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:38,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:38,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:38,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:38,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:38,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:38,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:38,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:38,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:38,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:30:38,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:38,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:38,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:38,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:38,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:38,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:38,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:38,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:38,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:38,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:38,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:38,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:30:38,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:38,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:38,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:38,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:38,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:38,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:38,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:38,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:38,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:38,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:38,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:38,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 10:30:38,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:38,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:38,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:38,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:38,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:38,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:38,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:38,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:38,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:38,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:38,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:38,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-12 10:30:38,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:38,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:38,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:38,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:38,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:38,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:38,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:38,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:38,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:38,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:38,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:38,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 10:30:38,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:38,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:38,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:38,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:38,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:38,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:38,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:38,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:38,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:38,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:38,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:38,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-12 10:30:38,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:38,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:38,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:38,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:38,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:38,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:38,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:38,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:38,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:38,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:38,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:38,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-12 10:30:38,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:38,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:38,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:38,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:38,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:38,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:38,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:38,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:38,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:38,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:38,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:38,338 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 14 proven. 134 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-12 10:30:38,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1018376369] [2020-10-12 10:30:38,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:30:38,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 10:30:38,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200789120] [2020-10-12 10:30:38,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 10:30:38,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:30:38,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 10:30:38,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-12 10:30:38,340 INFO L87 Difference]: Start difference. First operand 253 states and 288 transitions. Second operand 17 states. [2020-10-12 10:30:41,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:30:41,432 INFO L93 Difference]: Finished difference Result 400 states and 457 transitions. [2020-10-12 10:30:41,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-12 10:30:41,433 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 97 [2020-10-12 10:30:41,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:30:41,436 INFO L225 Difference]: With dead ends: 400 [2020-10-12 10:30:41,436 INFO L226 Difference]: Without dead ends: 398 [2020-10-12 10:30:41,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 996 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=424, Invalid=3482, Unknown=0, NotChecked=0, Total=3906 [2020-10-12 10:30:41,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2020-10-12 10:30:41,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 277. [2020-10-12 10:30:41,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-12 10:30:41,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 316 transitions. [2020-10-12 10:30:41,495 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 316 transitions. Word has length 97 [2020-10-12 10:30:41,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:30:41,496 INFO L479 AbstractCegarLoop]: Abstraction has 277 states and 316 transitions. [2020-10-12 10:30:41,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 10:30:41,496 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 316 transitions. [2020-10-12 10:30:41,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-12 10:30:41,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:30:41,498 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:30:41,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-12 10:30:41,498 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:30:41,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:30:41,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1908637683, now seen corresponding path program 9 times [2020-10-12 10:30:41,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:30:41,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604113612] [2020-10-12 10:30:41,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:30:41,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:41,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:41,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:42,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:42,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 10:30:42,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:30:42,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 582 [2020-10-12 10:30:42,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:42,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 10:30:42,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 10:30:42,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 10:30:42,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:42,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:30:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:42,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:42,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:42,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:30:42,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:42,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:42,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:42,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:42,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:42,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:42,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:42,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:30:42,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:42,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:42,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:42,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:42,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:42,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:30:42,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:42,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:30:42,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:42,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:30:42,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:42,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 10:30:42,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:42,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:42,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:42,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:42,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:42,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:42,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:42,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:42,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:42,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:42,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:42,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 10:30:42,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:42,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:42,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:42,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:42,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:42,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:42,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:42,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:42,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:42,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:42,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:42,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 10:30:42,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:42,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:42,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:42,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:42,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:42,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:42,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:42,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:42,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:42,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:42,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:42,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-12 10:30:42,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:42,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:42,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:42,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:42,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:42,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:42,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:42,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:42,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:42,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:42,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:42,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 10:30:42,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:42,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:42,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:42,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:42,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:42,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:42,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:42,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:42,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:42,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:42,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:42,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-12 10:30:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:42,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:42,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:42,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:42,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:42,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:42,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:42,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:42,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:42,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:42,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:42,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-12 10:30:42,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:42,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:42,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:42,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:42,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:42,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:42,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:42,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:42,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:42,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:42,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:42,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-12 10:30:42,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:42,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:42,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:42,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:42,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:42,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:42,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:42,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:42,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:42,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:42,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:42,900 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 180 proven. 8 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-12 10:30:42,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604113612] [2020-10-12 10:30:42,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:30:42,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 10:30:42,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815190571] [2020-10-12 10:30:42,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 10:30:42,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:30:42,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 10:30:42,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2020-10-12 10:30:42,903 INFO L87 Difference]: Start difference. First operand 277 states and 316 transitions. Second operand 19 states. [2020-10-12 10:30:44,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:30:44,048 INFO L93 Difference]: Finished difference Result 552 states and 626 transitions. [2020-10-12 10:30:44,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 10:30:44,049 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 106 [2020-10-12 10:30:44,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:30:44,051 INFO L225 Difference]: With dead ends: 552 [2020-10-12 10:30:44,051 INFO L226 Difference]: Without dead ends: 332 [2020-10-12 10:30:44,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=224, Invalid=832, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 10:30:44,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-10-12 10:30:44,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 307. [2020-10-12 10:30:44,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2020-10-12 10:30:44,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 346 transitions. [2020-10-12 10:30:44,109 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 346 transitions. Word has length 106 [2020-10-12 10:30:44,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:30:44,110 INFO L479 AbstractCegarLoop]: Abstraction has 307 states and 346 transitions. [2020-10-12 10:30:44,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 10:30:44,110 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 346 transitions. [2020-10-12 10:30:44,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-12 10:30:44,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:30:44,111 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:30:44,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-12 10:30:44,112 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:30:44,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:30:44,112 INFO L82 PathProgramCache]: Analyzing trace with hash 700624922, now seen corresponding path program 10 times [2020-10-12 10:30:44,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:30:44,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38802812] [2020-10-12 10:30:44,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:30:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:44,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:44,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:44,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-12 10:30:44,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:44,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 366 [2020-10-12 10:30:44,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:44,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 10:30:44,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:30:44,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 10:30:44,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:44,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:30:44,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:44,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:44,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:44,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:30:44,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:44,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:44,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:44,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:44,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:44,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:44,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:44,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:30:44,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:44,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:44,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:44,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:44,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:44,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:44,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:44,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:44,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:44,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:44,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:44,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 10:30:44,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:44,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:44,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:44,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:44,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:44,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:44,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:44,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:44,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:44,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:44,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:44,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 10:30:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:44,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:44,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:44,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:44,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:44,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:44,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:44,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:44,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:44,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:44,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:44,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 10:30:44,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:44,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:44,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:44,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:44,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:44,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:44,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:44,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:44,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:44,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:44,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:44,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 10:30:44,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:44,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:44,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:44,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:44,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:44,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:44,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:44,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:44,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:44,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:44,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:44,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-12 10:30:44,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:44,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:44,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:44,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:44,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:44,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:44,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:44,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:44,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:44,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:44,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:44,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-12 10:30:44,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:44,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:44,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:44,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:44,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:44,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:44,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:44,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:44,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:44,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:44,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:44,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-12 10:30:44,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:44,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:44,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:44,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:44,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:44,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:44,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:44,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:44,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:44,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:44,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:44,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-12 10:30:44,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:44,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:44,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:44,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:44,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:44,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:44,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:44,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:44,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:44,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:44,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:44,843 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 24 proven. 177 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-12 10:30:44,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38802812] [2020-10-12 10:30:44,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:30:44,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 10:30:44,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860160298] [2020-10-12 10:30:44,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 10:30:44,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:30:44,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 10:30:44,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-12 10:30:44,845 INFO L87 Difference]: Start difference. First operand 307 states and 346 transitions. Second operand 18 states. [2020-10-12 10:30:48,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:30:48,582 INFO L93 Difference]: Finished difference Result 472 states and 537 transitions. [2020-10-12 10:30:48,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-10-12 10:30:48,583 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 112 [2020-10-12 10:30:48,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:30:48,585 INFO L225 Difference]: With dead ends: 472 [2020-10-12 10:30:48,586 INFO L226 Difference]: Without dead ends: 456 [2020-10-12 10:30:48,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1996 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=793, Invalid=5527, Unknown=0, NotChecked=0, Total=6320 [2020-10-12 10:30:48,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2020-10-12 10:30:48,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 328. [2020-10-12 10:30:48,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-10-12 10:30:48,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 374 transitions. [2020-10-12 10:30:48,654 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 374 transitions. Word has length 112 [2020-10-12 10:30:48,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:30:48,654 INFO L479 AbstractCegarLoop]: Abstraction has 328 states and 374 transitions. [2020-10-12 10:30:48,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 10:30:48,655 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 374 transitions. [2020-10-12 10:30:48,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-12 10:30:48,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:30:48,656 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 5, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:30:48,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-12 10:30:48,657 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:30:48,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:30:48,657 INFO L82 PathProgramCache]: Analyzing trace with hash -668441436, now seen corresponding path program 5 times [2020-10-12 10:30:48,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:30:48,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546222341] [2020-10-12 10:30:48,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:30:48,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:48,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:48,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:48,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:48,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:48,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:48,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:49,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:49,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:51,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:51,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:53,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:53,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-12 10:30:53,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 10:30:53,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 10:30:53,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:53,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 10:30:53,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:30:53,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-12 10:30:53,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:54,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:30:54,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:54,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:54,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:54,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:30:54,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:54,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:54,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:54,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:54,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:54,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:54,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:54,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:30:54,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:54,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:54,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:54,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:54,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:54,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:54,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:54,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:54,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:54,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:54,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:54,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 10:30:54,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:54,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:54,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:54,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:54,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:54,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:54,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:54,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:54,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:54,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:54,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:54,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 10:30:54,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:54,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:54,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:54,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:54,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:54,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:54,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:54,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:54,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:54,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:54,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:54,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 10:30:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:54,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:54,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:54,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:54,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:54,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:54,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:54,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:54,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:54,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:54,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:54,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 10:30:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:54,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:54,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:54,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:54,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:54,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:54,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:54,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:54,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:54,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:54,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:54,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-12 10:30:54,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:54,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:54,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:54,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:54,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:54,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:54,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:54,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:54,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:54,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:54,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:54,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-12 10:30:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:54,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:54,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:54,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:54,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:54,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:30:54,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:54,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:30:54,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:30:54,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:30:54,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:54,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-12 10:30:54,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:54,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:54,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:54,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:54,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:54,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:54,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:54,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:54,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:30:54,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:54,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:54,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-12 10:30:54,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:54,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:54,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:30:54,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:30:54,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:30:54,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:30:54,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:30:54,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:30:54,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:30:54,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:30:54,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:30:54,338 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 86 proven. 106 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-10-12 10:30:54,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546222341] [2020-10-12 10:30:54,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:30:54,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 10:30:54,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028300371] [2020-10-12 10:30:54,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 10:30:54,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:30:54,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 10:30:54,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2020-10-12 10:30:54,341 INFO L87 Difference]: Start difference. First operand 328 states and 374 transitions. Second operand 19 states. [2020-10-12 10:30:55,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:30:55,664 INFO L93 Difference]: Finished difference Result 359 states and 410 transitions. [2020-10-12 10:30:55,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 10:30:55,665 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 112 [2020-10-12 10:30:55,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:30:55,667 INFO L225 Difference]: With dead ends: 359 [2020-10-12 10:30:55,667 INFO L226 Difference]: Without dead ends: 333 [2020-10-12 10:30:55,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 23 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=102, Invalid=710, Unknown=0, NotChecked=0, Total=812 [2020-10-12 10:30:55,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-10-12 10:30:55,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 327. [2020-10-12 10:30:55,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2020-10-12 10:30:55,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 371 transitions. [2020-10-12 10:30:55,733 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 371 transitions. Word has length 112 [2020-10-12 10:30:55,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:30:55,734 INFO L479 AbstractCegarLoop]: Abstraction has 327 states and 371 transitions. [2020-10-12 10:30:55,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 10:30:55,734 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 371 transitions. [2020-10-12 10:30:55,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-12 10:30:55,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:30:55,736 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 6, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:30:55,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-12 10:30:55,737 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:30:55,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:30:55,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1821087526, now seen corresponding path program 6 times [2020-10-12 10:30:55,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:30:55,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472352869] [2020-10-12 10:30:55,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:30:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:30:55,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:55,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:56,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:56,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:56,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:56,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:57,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:30:57,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:00,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:00,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-12 10:31:00,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 10:31:00,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 10:31:00,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:00,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 10:31:00,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:31:00,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-12 10:31:00,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:01,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:31:01,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:01,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:01,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:01,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:31:01,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:01,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:01,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:01,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:01,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:01,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:01,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:01,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:31:01,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:01,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:01,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:01,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:01,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:01,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:01,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:01,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:01,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:01,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:01,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:01,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 10:31:01,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:01,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:01,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:01,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:01,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:01,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:01,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:01,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:01,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:01,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:01,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:01,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 10:31:01,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:01,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:01,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:01,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:01,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:01,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:31:01,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:01,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:01,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:01,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:01,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:01,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 10:31:01,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:01,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:01,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:01,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:01,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:01,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:31:01,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:01,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:01,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:01,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:01,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:01,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 10:31:01,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:01,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:01,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:01,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:01,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:01,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:01,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:01,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:01,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:01,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:01,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:01,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-12 10:31:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:01,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:01,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:01,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:01,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:01,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:31:01,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:01,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:01,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:01,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:01,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:01,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-12 10:31:01,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:01,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:01,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:01,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:01,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:01,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:31:01,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:01,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:01,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:01,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:01,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:01,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-12 10:31:01,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:01,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:01,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:01,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:01,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:01,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:31:01,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:01,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:01,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:01,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:01,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:01,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-12 10:31:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:01,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:01,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:01,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:01,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:01,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:01,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:01,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:01,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:31:01,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:01,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:01,514 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 60 proven. 138 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-12 10:31:01,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472352869] [2020-10-12 10:31:01,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:31:01,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 10:31:01,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203323042] [2020-10-12 10:31:01,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 10:31:01,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:31:01,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 10:31:01,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-10-12 10:31:01,517 INFO L87 Difference]: Start difference. First operand 327 states and 371 transitions. Second operand 19 states. [2020-10-12 10:31:03,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:31:03,416 INFO L93 Difference]: Finished difference Result 351 states and 399 transitions. [2020-10-12 10:31:03,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 10:31:03,417 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 112 [2020-10-12 10:31:03,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:31:03,419 INFO L225 Difference]: With dead ends: 351 [2020-10-12 10:31:03,419 INFO L226 Difference]: Without dead ends: 335 [2020-10-12 10:31:03,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 7 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=109, Invalid=821, Unknown=0, NotChecked=0, Total=930 [2020-10-12 10:31:03,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-10-12 10:31:03,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 327. [2020-10-12 10:31:03,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2020-10-12 10:31:03,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 370 transitions. [2020-10-12 10:31:03,466 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 370 transitions. Word has length 112 [2020-10-12 10:31:03,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:31:03,466 INFO L479 AbstractCegarLoop]: Abstraction has 327 states and 370 transitions. [2020-10-12 10:31:03,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 10:31:03,466 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 370 transitions. [2020-10-12 10:31:03,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-12 10:31:03,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:31:03,468 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 7, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:31:03,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-12 10:31:03,468 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:31:03,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:31:03,469 INFO L82 PathProgramCache]: Analyzing trace with hash 809970276, now seen corresponding path program 7 times [2020-10-12 10:31:03,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:31:03,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1962186335] [2020-10-12 10:31:03,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:31:03,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:03,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:04,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:04,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-12 10:31:04,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:04,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 633 [2020-10-12 10:31:04,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:04,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 10:31:04,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:31:04,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-12 10:31:04,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:04,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:31:04,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:04,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:04,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:04,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:31:04,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:04,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:04,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:04,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:04,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:04,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:04,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:04,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:31:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:04,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:04,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:04,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:04,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:04,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:04,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:04,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:04,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:04,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:04,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:04,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 10:31:04,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:04,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:04,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:04,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:04,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:04,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:04,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:04,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:04,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:04,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:04,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:04,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 10:31:04,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:04,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:04,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:04,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:04,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:04,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:04,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:04,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:04,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:04,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:04,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:04,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 10:31:04,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:04,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:04,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:04,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:04,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:04,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:04,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:04,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:04,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:04,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:04,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:04,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 10:31:04,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:04,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:04,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:04,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:04,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:04,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:04,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:04,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:04,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:04,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:04,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:04,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-12 10:31:04,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:04,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:04,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:04,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:04,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:04,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:04,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:04,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:04,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:04,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:04,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:04,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-12 10:31:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:04,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:04,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:04,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:04,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:04,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:04,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:04,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:04,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:04,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:04,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:04,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-12 10:31:04,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:04,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:04,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:04,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:04,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:04,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:04,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:04,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:04,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:04,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:04,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:04,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-12 10:31:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:04,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:04,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:04,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:04,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:04,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:04,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:04,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:04,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:04,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:04,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:04,540 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 16 proven. 185 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-12 10:31:04,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1962186335] [2020-10-12 10:31:04,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:31:04,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 10:31:04,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109417437] [2020-10-12 10:31:04,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 10:31:04,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:31:04,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 10:31:04,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2020-10-12 10:31:04,542 INFO L87 Difference]: Start difference. First operand 327 states and 370 transitions. Second operand 20 states. [2020-10-12 10:31:09,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:31:09,068 INFO L93 Difference]: Finished difference Result 467 states and 529 transitions. [2020-10-12 10:31:09,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2020-10-12 10:31:09,069 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 112 [2020-10-12 10:31:09,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:31:09,072 INFO L225 Difference]: With dead ends: 467 [2020-10-12 10:31:09,072 INFO L226 Difference]: Without dead ends: 465 [2020-10-12 10:31:09,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1802 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=725, Invalid=5595, Unknown=0, NotChecked=0, Total=6320 [2020-10-12 10:31:09,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2020-10-12 10:31:09,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 336. [2020-10-12 10:31:09,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2020-10-12 10:31:09,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 380 transitions. [2020-10-12 10:31:09,142 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 380 transitions. Word has length 112 [2020-10-12 10:31:09,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:31:09,143 INFO L479 AbstractCegarLoop]: Abstraction has 336 states and 380 transitions. [2020-10-12 10:31:09,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 10:31:09,143 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 380 transitions. [2020-10-12 10:31:09,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-12 10:31:09,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:31:09,145 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:31:09,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-12 10:31:09,145 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:31:09,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:31:09,146 INFO L82 PathProgramCache]: Analyzing trace with hash -2035723543, now seen corresponding path program 11 times [2020-10-12 10:31:09,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:31:09,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224365707] [2020-10-12 10:31:09,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:31:09,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:09,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:09,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:09,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-12 10:31:09,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:09,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 513 [2020-10-12 10:31:09,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:09,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 10:31:09,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:31:09,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-12 10:31:09,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:10,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:31:10,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:10,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:10,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:10,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:31:10,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:10,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:10,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:10,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:10,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:10,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:10,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:10,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:31:10,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:10,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:10,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:10,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:10,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:10,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:10,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:10,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:10,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:10,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:10,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:10,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 10:31:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:10,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:10,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:10,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:10,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:10,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:31:10,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:10,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:10,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:10,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:10,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:10,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 10:31:10,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:10,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:10,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:10,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:10,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:10,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:10,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:10,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:10,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:10,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:10,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:10,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 10:31:10,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:10,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:10,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:10,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:10,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:10,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:31:10,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:10,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:10,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:10,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:10,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:10,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 10:31:10,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:10,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:10,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:10,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:10,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:10,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:31:10,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:10,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:10,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:10,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:10,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:10,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-12 10:31:10,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:10,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:10,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:10,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:10,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:10,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:10,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:10,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:10,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:10,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:10,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:10,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-12 10:31:10,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:10,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:10,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:10,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:10,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:10,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:10,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:10,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:10,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:10,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:10,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:10,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-12 10:31:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:10,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:10,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:10,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:10,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:10,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:31:10,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:10,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:10,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:10,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:10,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:10,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-12 10:31:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:10,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:10,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:10,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:10,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:10,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 10:31:10,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:10,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:10,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:10,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:10,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:10,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 10:31:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:10,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:10,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:10,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:10,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:10,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:31:10,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:10,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:10,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:10,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:10,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:10,280 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 27 proven. 219 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-12 10:31:10,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224365707] [2020-10-12 10:31:10,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:31:10,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 10:31:10,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723968677] [2020-10-12 10:31:10,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 10:31:10,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:31:10,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 10:31:10,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2020-10-12 10:31:10,283 INFO L87 Difference]: Start difference. First operand 336 states and 380 transitions. Second operand 19 states. [2020-10-12 10:31:15,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:31:15,020 INFO L93 Difference]: Finished difference Result 501 states and 570 transitions. [2020-10-12 10:31:15,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-10-12 10:31:15,022 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 121 [2020-10-12 10:31:15,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:31:15,025 INFO L225 Difference]: With dead ends: 501 [2020-10-12 10:31:15,025 INFO L226 Difference]: Without dead ends: 485 [2020-10-12 10:31:15,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2094 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=781, Invalid=6025, Unknown=0, NotChecked=0, Total=6806 [2020-10-12 10:31:15,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-10-12 10:31:15,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 357. [2020-10-12 10:31:15,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-10-12 10:31:15,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 407 transitions. [2020-10-12 10:31:15,083 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 407 transitions. Word has length 121 [2020-10-12 10:31:15,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:31:15,083 INFO L479 AbstractCegarLoop]: Abstraction has 357 states and 407 transitions. [2020-10-12 10:31:15,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 10:31:15,083 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 407 transitions. [2020-10-12 10:31:15,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-12 10:31:15,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:31:15,085 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 8, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:31:15,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-12 10:31:15,085 INFO L427 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:31:15,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:31:15,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1128281959, now seen corresponding path program 3 times [2020-10-12 10:31:15,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:31:15,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132322437] [2020-10-12 10:31:15,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:31:15,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:15,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:15,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:15,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:15,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:15,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:15,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:15,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:16,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:16,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:20,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:20,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-12 10:31:20,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 10:31:20,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 10:31:20,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:20,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 10:31:20,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:31:20,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 10:31:20,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:20,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:31:20,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:20,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:20,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:20,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:31:20,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:20,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:20,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:20,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:20,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:20,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:20,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:20,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:31:20,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:20,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:20,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:20,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:20,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:20,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:20,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:20,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:20,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:20,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:20,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:20,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 10:31:20,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:20,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:20,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:20,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:20,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:20,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:20,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:20,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:20,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:20,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:20,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:20,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 10:31:20,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:20,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:20,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:20,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:20,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:20,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:20,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:20,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:20,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:20,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:20,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:20,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 10:31:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:20,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:20,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:20,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:20,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:20,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:20,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:20,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:20,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:20,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:20,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:20,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 10:31:20,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:20,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:20,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:20,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:20,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:20,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:20,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:20,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:20,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:20,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:20,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:20,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-12 10:31:20,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:20,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:20,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:20,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:20,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:20,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:20,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:20,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:20,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:20,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:20,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:20,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-12 10:31:20,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:20,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:20,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:20,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:20,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:20,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:20,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:20,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:20,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:31:20,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:20,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:20,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-12 10:31:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:20,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:20,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:20,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:20,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:20,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:20,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:20,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:20,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:31:20,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:20,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:20,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-12 10:31:20,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:20,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:20,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:20,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:20,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:20,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:31:20,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:20,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:20,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:31:20,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:20,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:20,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 10:31:20,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:20,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:20,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:20,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:20,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:20,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:31:20,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:20,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:20,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:31:20,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:20,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:20,722 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 131 proven. 79 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-12 10:31:20,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132322437] [2020-10-12 10:31:20,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:31:20,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 10:31:20,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141726447] [2020-10-12 10:31:20,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 10:31:20,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:31:20,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 10:31:20,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2020-10-12 10:31:20,724 INFO L87 Difference]: Start difference. First operand 357 states and 407 transitions. Second operand 18 states. [2020-10-12 10:31:21,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:31:21,960 INFO L93 Difference]: Finished difference Result 406 states and 461 transitions. [2020-10-12 10:31:21,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 10:31:21,961 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 121 [2020-10-12 10:31:21,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:31:21,963 INFO L225 Difference]: With dead ends: 406 [2020-10-12 10:31:21,963 INFO L226 Difference]: Without dead ends: 362 [2020-10-12 10:31:21,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 7 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=94, Invalid=556, Unknown=0, NotChecked=0, Total=650 [2020-10-12 10:31:21,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-10-12 10:31:22,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 356. [2020-10-12 10:31:22,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-10-12 10:31:22,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 404 transitions. [2020-10-12 10:31:22,036 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 404 transitions. Word has length 121 [2020-10-12 10:31:22,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:31:22,037 INFO L479 AbstractCegarLoop]: Abstraction has 356 states and 404 transitions. [2020-10-12 10:31:22,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 10:31:22,037 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 404 transitions. [2020-10-12 10:31:22,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-12 10:31:22,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:31:22,039 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:31:22,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-12 10:31:22,039 INFO L427 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:31:22,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:31:22,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1551928681, now seen corresponding path program 4 times [2020-10-12 10:31:22,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:31:22,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906847992] [2020-10-12 10:31:22,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:31:22,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:22,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:22,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:22,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:22,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:22,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:22,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:22,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:22,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:27,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:27,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-12 10:31:27,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 10:31:27,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 10:31:27,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:27,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 10:31:27,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:31:27,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 10:31:27,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:27,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:31:27,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:27,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:27,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:27,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:31:27,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:27,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:27,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:27,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:27,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:27,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:27,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:27,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:31:27,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:27,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:27,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:27,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:27,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:27,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:27,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:27,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:27,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:27,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:27,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:27,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 10:31:27,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:27,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:27,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:27,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:27,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:27,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:27,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:27,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:27,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:27,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:27,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:27,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 10:31:27,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:27,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:27,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:27,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:27,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:27,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:31:27,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:27,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:27,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:27,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:27,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:27,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 10:31:27,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:27,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:27,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:27,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:27,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:27,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:27,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:27,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:27,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:27,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:27,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:27,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 10:31:27,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:27,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:27,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:27,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:27,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:27,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:31:27,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:27,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:27,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:27,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:27,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:27,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-12 10:31:27,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:27,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:27,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:27,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:27,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:27,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:31:27,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:27,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:27,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:27,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:27,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:27,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-12 10:31:27,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:27,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:27,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:27,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:27,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:27,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:31:27,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:27,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:27,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:27,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:27,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:27,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-12 10:31:27,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:27,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:27,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:27,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:27,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:27,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:31:27,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:27,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:27,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:27,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:27,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:27,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-12 10:31:27,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:27,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:27,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:27,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:27,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:27,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:31:27,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:27,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:27,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:27,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:27,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:31:27,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 10:31:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:27,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:27,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:27,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:27,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:27,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:27,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:27,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:27,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:31:27,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:27,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:28,090 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 68 proven. 177 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-10-12 10:31:28,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906847992] [2020-10-12 10:31:28,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:31:28,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 10:31:28,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21927215] [2020-10-12 10:31:28,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 10:31:28,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:31:28,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 10:31:28,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2020-10-12 10:31:28,091 INFO L87 Difference]: Start difference. First operand 356 states and 404 transitions. Second operand 21 states. [2020-10-12 10:31:30,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:31:30,460 INFO L93 Difference]: Finished difference Result 403 states and 456 transitions. [2020-10-12 10:31:30,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 10:31:30,462 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 121 [2020-10-12 10:31:30,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:31:30,464 INFO L225 Difference]: With dead ends: 403 [2020-10-12 10:31:30,464 INFO L226 Difference]: Without dead ends: 382 [2020-10-12 10:31:30,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 23 SyntacticMatches, 9 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=129, Invalid=1203, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 10:31:30,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-10-12 10:31:30,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 356. [2020-10-12 10:31:30,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-10-12 10:31:30,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 402 transitions. [2020-10-12 10:31:30,540 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 402 transitions. Word has length 121 [2020-10-12 10:31:30,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:31:30,541 INFO L479 AbstractCegarLoop]: Abstraction has 356 states and 402 transitions. [2020-10-12 10:31:30,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 10:31:30,541 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 402 transitions. [2020-10-12 10:31:30,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-12 10:31:30,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:31:30,543 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:31:30,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-12 10:31:30,543 INFO L427 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:31:30,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:31:30,544 INFO L82 PathProgramCache]: Analyzing trace with hash 540811431, now seen corresponding path program 2 times [2020-10-12 10:31:30,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:31:30,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061305471] [2020-10-12 10:31:30,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:31:30,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:30,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:31,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:31,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-12 10:31:31,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:31,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 687 [2020-10-12 10:31:31,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:31,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 10:31:31,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:31:31,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-12 10:31:31,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:31,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:31:31,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:31,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:31,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:31,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:31:31,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:31,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:31,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:31,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:31,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:31,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:31,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:31,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:31:31,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:31,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:31,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:31,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:31,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:31,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:31,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:31,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:31,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:31,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:31,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:31,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 10:31:31,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:31,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:31,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:31,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:31,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:31,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:31,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:31,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:31,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:31,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:31,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:31,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 10:31:31,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:31,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:31,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:31,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:31,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:31,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:31,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:31,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:31,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:31,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:31,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:31,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 10:31:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:31,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:31,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:31,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:31,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:31,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:31,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:31,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:31,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:31,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:31,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:31,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 10:31:31,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:31,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:31,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:31,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:31,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:31,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:31,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:31,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:31,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:31,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:31,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:31,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-12 10:31:31,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:31,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:31,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:31,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:31,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:31,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:31,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:31,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:31,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:31,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:31,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:31,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-12 10:31:31,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:31,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:31,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:31,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:31,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:31,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:31,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:31,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:31,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:31,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:31,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:31,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-12 10:31:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:31,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:31,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:31,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:31,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:31,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:31,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:31,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:31,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:31,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:31,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:31,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-12 10:31:31,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:31,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:31,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:31,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:31,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:31,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:31,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:31,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:31,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:31,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:31,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:31,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 10:31:31,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:31,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:31,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:31,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:31,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:31,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:31,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:31,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:31,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:31,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:31,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:31,766 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 18 proven. 228 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-12 10:31:31,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061305471] [2020-10-12 10:31:31,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:31:31,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 10:31:31,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234541838] [2020-10-12 10:31:31,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 10:31:31,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:31:31,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 10:31:31,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2020-10-12 10:31:31,769 INFO L87 Difference]: Start difference. First operand 356 states and 402 transitions. Second operand 21 states. [2020-10-12 10:31:36,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:31:36,771 INFO L93 Difference]: Finished difference Result 496 states and 561 transitions. [2020-10-12 10:31:36,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-10-12 10:31:36,773 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 121 [2020-10-12 10:31:36,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:31:36,775 INFO L225 Difference]: With dead ends: 496 [2020-10-12 10:31:36,775 INFO L226 Difference]: Without dead ends: 494 [2020-10-12 10:31:36,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1645 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=647, Invalid=5359, Unknown=0, NotChecked=0, Total=6006 [2020-10-12 10:31:36,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2020-10-12 10:31:36,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 365. [2020-10-12 10:31:36,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-10-12 10:31:36,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 412 transitions. [2020-10-12 10:31:36,850 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 412 transitions. Word has length 121 [2020-10-12 10:31:36,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:31:36,850 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 412 transitions. [2020-10-12 10:31:36,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 10:31:36,850 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 412 transitions. [2020-10-12 10:31:36,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-12 10:31:36,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:31:36,852 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:31:36,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-12 10:31:36,853 INFO L427 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:31:36,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:31:36,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1299933434, now seen corresponding path program 12 times [2020-10-12 10:31:36,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:31:36,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984599997] [2020-10-12 10:31:36,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:31:36,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:36,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:37,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:37,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-12 10:31:37,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:37,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 464 [2020-10-12 10:31:37,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:37,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 10:31:37,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:31:37,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-12 10:31:37,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:37,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:31:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:37,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:37,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:37,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:31:37,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:37,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:37,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:37,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:37,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:37,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:37,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:37,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:31:37,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:37,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:37,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:37,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:37,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:37,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:31:37,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:37,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:37,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:37,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:37,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:37,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 10:31:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:37,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:37,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:37,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:37,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:37,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:37,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:37,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:37,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:37,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:37,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:37,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 10:31:37,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:37,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:37,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:37,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:37,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:37,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:37,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:37,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:37,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:37,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:37,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:37,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 10:31:37,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:37,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:37,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:37,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:37,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:37,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:37,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:37,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:37,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:37,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:37,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:37,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 10:31:37,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:37,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:37,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:37,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:37,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:37,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:37,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:37,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:37,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:37,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:37,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:37,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-12 10:31:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:37,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:37,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:37,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:37,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:37,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:37,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:37,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:37,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:37,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:37,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:37,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-12 10:31:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:37,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:37,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:37,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:37,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:37,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:37,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:37,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:37,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:37,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:37,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:37,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-12 10:31:37,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:37,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:37,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:37,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:37,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:37,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:37,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:37,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:37,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:37,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:37,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:37,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-12 10:31:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:37,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:37,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:37,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:37,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:37,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:37,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:37,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:37,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:37,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:37,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:37,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 10:31:37,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:37,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:37,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:37,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:37,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:37,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:37,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:37,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:37,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:37,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:37,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:37,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-12 10:31:37,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:37,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:37,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:37,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:37,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:37,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:37,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:37,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:37,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:37,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:37,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:37,773 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 30 proven. 266 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-12 10:31:37,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984599997] [2020-10-12 10:31:37,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:31:37,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 10:31:37,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412651222] [2020-10-12 10:31:37,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 10:31:37,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:31:37,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 10:31:37,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2020-10-12 10:31:37,775 INFO L87 Difference]: Start difference. First operand 365 states and 412 transitions. Second operand 20 states. [2020-10-12 10:31:42,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:31:42,885 INFO L93 Difference]: Finished difference Result 530 states and 602 transitions. [2020-10-12 10:31:42,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-10-12 10:31:42,886 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 130 [2020-10-12 10:31:42,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:31:42,889 INFO L225 Difference]: With dead ends: 530 [2020-10-12 10:31:42,889 INFO L226 Difference]: Without dead ends: 514 [2020-10-12 10:31:42,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2220 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=754, Invalid=6556, Unknown=0, NotChecked=0, Total=7310 [2020-10-12 10:31:42,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-10-12 10:31:42,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 376. [2020-10-12 10:31:42,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-10-12 10:31:42,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 427 transitions. [2020-10-12 10:31:42,979 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 427 transitions. Word has length 130 [2020-10-12 10:31:42,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:31:42,980 INFO L479 AbstractCegarLoop]: Abstraction has 376 states and 427 transitions. [2020-10-12 10:31:42,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 10:31:42,980 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 427 transitions. [2020-10-12 10:31:42,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-12 10:31:42,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:31:42,983 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 8, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:31:42,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-12 10:31:42,983 INFO L427 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:31:42,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:31:42,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1990314502, now seen corresponding path program 4 times [2020-10-12 10:31:42,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:31:42,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209728853] [2020-10-12 10:31:42,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:31:43,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:43,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:43,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:43,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:43,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:43,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:44,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:44,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:44,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:44,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:44,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:46,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:46,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:46,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:46,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:47,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:48,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:48,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-12 10:31:48,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 10:31:48,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 10:31:48,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:48,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 10:31:48,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:31:48,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-12 10:31:48,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:48,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:31:48,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:48,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:48,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:48,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:31:48,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:48,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:48,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:48,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:48,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:48,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:48,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:48,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:31:48,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:48,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:48,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:48,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:48,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:48,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:48,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:48,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:48,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:48,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:48,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:48,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 10:31:48,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:48,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:48,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:48,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:48,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:48,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:48,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:48,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:48,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:48,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:48,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:48,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 10:31:48,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:48,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:48,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:48,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:48,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:48,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:48,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:48,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:48,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:48,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:48,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:48,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 10:31:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:48,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:48,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:48,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:48,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:48,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:48,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:48,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:48,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:48,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:48,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:48,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 10:31:48,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:48,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:48,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:48,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:48,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:48,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:48,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:48,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:48,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:48,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:48,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:48,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-12 10:31:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:48,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:48,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:48,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:48,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:48,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:48,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:48,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:48,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:48,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:48,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:48,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-12 10:31:48,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:48,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:48,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:48,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:48,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:48,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:48,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:48,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:48,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:48,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:48,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:48,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-12 10:31:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:48,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:48,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:48,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:48,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:48,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:48,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:48,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:48,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:48,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:48,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:48,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-12 10:31:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:48,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:48,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:48,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:48,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:48,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:48,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:48,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:31:48,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:31:48,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:48,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:48,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 10:31:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:48,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:48,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:48,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:48,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:48,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:31:48,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:48,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:48,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:31:48,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:48,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:48,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-12 10:31:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:48,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:48,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:48,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:48,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:48,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:31:48,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:48,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:48,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:31:48,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:48,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:48,823 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 155 proven. 151 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2020-10-12 10:31:48,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209728853] [2020-10-12 10:31:48,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:31:48,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 10:31:48,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553233587] [2020-10-12 10:31:48,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 10:31:48,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:31:48,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 10:31:48,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=414, Unknown=0, NotChecked=0, Total=462 [2020-10-12 10:31:48,824 INFO L87 Difference]: Start difference. First operand 376 states and 427 transitions. Second operand 22 states. [2020-10-12 10:31:51,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:31:51,158 INFO L93 Difference]: Finished difference Result 417 states and 475 transitions. [2020-10-12 10:31:51,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 10:31:51,160 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 130 [2020-10-12 10:31:51,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:31:51,161 INFO L225 Difference]: With dead ends: 417 [2020-10-12 10:31:51,162 INFO L226 Difference]: Without dead ends: 391 [2020-10-12 10:31:51,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=142, Invalid=1118, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 10:31:51,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2020-10-12 10:31:51,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 376. [2020-10-12 10:31:51,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-10-12 10:31:51,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 426 transitions. [2020-10-12 10:31:51,233 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 426 transitions. Word has length 130 [2020-10-12 10:31:51,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:31:51,234 INFO L479 AbstractCegarLoop]: Abstraction has 376 states and 426 transitions. [2020-10-12 10:31:51,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 10:31:51,234 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 426 transitions. [2020-10-12 10:31:51,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-12 10:31:51,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:31:51,236 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 7, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:31:51,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-12 10:31:51,236 INFO L427 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:31:51,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:31:51,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1715554888, now seen corresponding path program 5 times [2020-10-12 10:31:51,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:31:51,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225637592] [2020-10-12 10:31:51,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:31:51,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:51,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:51,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:51,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:51,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:51,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:52,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:53,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:53,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:53,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:54,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:56,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:56,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-12 10:31:56,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 10:31:56,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 10:31:56,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:56,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 10:31:56,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:31:56,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-12 10:31:56,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:56,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:31:56,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:56,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:56,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:56,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:31:56,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:56,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:56,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:56,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:56,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:56,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:56,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:56,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:31:56,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:56,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:56,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:56,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:56,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:56,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:56,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:56,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:56,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:56,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:56,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:56,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 10:31:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:56,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:56,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:56,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:56,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:56,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:56,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:56,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:56,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:56,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:56,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:56,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 10:31:56,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:56,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:56,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:56,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:56,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:56,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:56,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:56,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:56,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:56,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:56,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:56,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 10:31:56,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:56,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:56,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:56,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:56,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:56,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:56,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:56,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:56,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:56,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:56,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:56,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 10:31:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:56,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:56,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:56,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:56,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:56,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:56,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:56,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:56,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:56,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:56,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:56,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-12 10:31:56,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:56,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:56,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:56,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:56,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:56,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:56,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:56,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:56,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:56,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:56,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:56,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-12 10:31:56,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:56,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:56,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:56,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:56,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:56,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:56,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:56,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:56,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:56,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:56,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:56,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-12 10:31:56,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:56,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:56,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:56,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:56,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:56,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:56,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:56,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:31:56,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:31:56,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:56,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:56,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-12 10:31:56,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:56,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:56,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:56,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:56,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:56,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:31:56,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:56,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:56,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:31:56,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:56,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:56,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 10:31:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:56,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:56,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:56,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:56,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:56,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:31:56,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:56,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:56,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:31:56,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:56,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:56,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-12 10:31:56,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:56,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:56,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:56,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:56,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:56,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 10:31:56,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:56,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:56,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 10:31:56,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:56,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:56,928 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 170 proven. 121 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2020-10-12 10:31:56,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225637592] [2020-10-12 10:31:56,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:31:56,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 10:31:56,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570761436] [2020-10-12 10:31:56,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 10:31:56,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:31:56,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 10:31:56,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2020-10-12 10:31:56,929 INFO L87 Difference]: Start difference. First operand 376 states and 426 transitions. Second operand 21 states. [2020-10-12 10:31:58,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:31:58,570 INFO L93 Difference]: Finished difference Result 425 states and 481 transitions. [2020-10-12 10:31:58,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 10:31:58,571 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 130 [2020-10-12 10:31:58,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:31:58,573 INFO L225 Difference]: With dead ends: 425 [2020-10-12 10:31:58,574 INFO L226 Difference]: Without dead ends: 390 [2020-10-12 10:31:58,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=118, Invalid=938, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 10:31:58,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2020-10-12 10:31:58,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 375. [2020-10-12 10:31:58,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-10-12 10:31:58,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 423 transitions. [2020-10-12 10:31:58,634 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 423 transitions. Word has length 130 [2020-10-12 10:31:58,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:31:58,634 INFO L479 AbstractCegarLoop]: Abstraction has 375 states and 423 transitions. [2020-10-12 10:31:58,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 10:31:58,635 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 423 transitions. [2020-10-12 10:31:58,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-12 10:31:58,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:31:58,636 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 6, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:31:58,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-12 10:31:58,637 INFO L427 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:31:58,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:31:58,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1291908166, now seen corresponding path program 6 times [2020-10-12 10:31:58,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:31:58,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924055009] [2020-10-12 10:31:58,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:31:58,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:58,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:59,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:59,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-12 10:31:59,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:59,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 487 [2020-10-12 10:31:59,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:59,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 10:31:59,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:31:59,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-12 10:31:59,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:59,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:31:59,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:59,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:59,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:59,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:31:59,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:59,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:59,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:59,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:59,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:59,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:59,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:59,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:31:59,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:59,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:59,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:59,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:59,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:59,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:59,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:59,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:31:59,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:59,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:31:59,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:59,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 10:31:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:59,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:59,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:59,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:59,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:59,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:59,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:59,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:59,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:59,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:59,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:59,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 10:31:59,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:59,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:59,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:59,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:59,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:59,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:59,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:59,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:59,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:59,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:59,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:59,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 10:31:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:59,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:59,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:59,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:59,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:59,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:59,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:59,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:59,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:59,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:59,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:59,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 10:31:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:59,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:59,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:59,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:59,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:59,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:59,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:59,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:59,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:59,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:59,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:59,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-12 10:31:59,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:59,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:59,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:59,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:59,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:59,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:59,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:59,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:59,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:59,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:59,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:59,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-12 10:31:59,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:59,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:59,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:59,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:59,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:59,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:59,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:59,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:59,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:59,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:59,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:59,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-12 10:31:59,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:59,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:59,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:59,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:59,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:59,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:59,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:59,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:59,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:59,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:59,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:59,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-12 10:31:59,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:59,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:59,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:59,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:59,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:59,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:59,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:59,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:59,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:59,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:59,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:59,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 10:31:59,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:59,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:59,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:59,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:59,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:59,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:31:59,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:59,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:59,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:59,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:59,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:59,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-12 10:31:59,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:31:59,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:31:59,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:31:59,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:31:59,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:31:59,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:31:59,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:31:59,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:31:59,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:31:59,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:31:59,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:31:59,677 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 20 proven. 276 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-12 10:31:59,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924055009] [2020-10-12 10:31:59,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:31:59,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 10:31:59,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089764290] [2020-10-12 10:31:59,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 10:31:59,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:31:59,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 10:31:59,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=418, Unknown=0, NotChecked=0, Total=462 [2020-10-12 10:31:59,679 INFO L87 Difference]: Start difference. First operand 375 states and 423 transitions. Second operand 22 states. [2020-10-12 10:32:06,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:32:06,089 INFO L93 Difference]: Finished difference Result 525 states and 594 transitions. [2020-10-12 10:32:06,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2020-10-12 10:32:06,090 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 130 [2020-10-12 10:32:06,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:32:06,094 INFO L225 Difference]: With dead ends: 525 [2020-10-12 10:32:06,094 INFO L226 Difference]: Without dead ends: 523 [2020-10-12 10:32:06,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2160 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=750, Invalid=6906, Unknown=0, NotChecked=0, Total=7656 [2020-10-12 10:32:06,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2020-10-12 10:32:06,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 394. [2020-10-12 10:32:06,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-10-12 10:32:06,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 445 transitions. [2020-10-12 10:32:06,183 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 445 transitions. Word has length 130 [2020-10-12 10:32:06,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:32:06,183 INFO L479 AbstractCegarLoop]: Abstraction has 394 states and 445 transitions. [2020-10-12 10:32:06,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 10:32:06,184 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 445 transitions. [2020-10-12 10:32:06,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-12 10:32:06,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:06,185 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:32:06,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-12 10:32:06,189 INFO L427 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:06,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:06,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1685940727, now seen corresponding path program 13 times [2020-10-12 10:32:06,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:06,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [21445924] [2020-10-12 10:32:06,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:06,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:06,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:06,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:06,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-12 10:32:06,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:06,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 543 [2020-10-12 10:32:06,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:06,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 10:32:06,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:32:06,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-12 10:32:06,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:07,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:07,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:07,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:07,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:32:07,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:07,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:07,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:07,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:07,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:07,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:07,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:07,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:32:07,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:07,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:07,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:07,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:07,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:07,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:32:07,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:07,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:07,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:07,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:07,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:07,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 10:32:07,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:07,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:07,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:07,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:07,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:07,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:07,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:07,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:07,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:07,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:07,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:07,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 10:32:07,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:07,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:07,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:07,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:07,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:07,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:07,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:07,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:07,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:07,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:07,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:07,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 10:32:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:07,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:07,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:07,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:07,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:07,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:07,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:07,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:07,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:07,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:07,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:07,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 10:32:07,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:07,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:07,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:07,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:07,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:07,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:07,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:07,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:07,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:07,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:07,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:07,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-12 10:32:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:07,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:07,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:07,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:07,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:07,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:07,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:07,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:07,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:07,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:07,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:07,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-12 10:32:07,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:07,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:07,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:07,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:07,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:07,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:07,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:07,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:07,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:07,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:07,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:07,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-12 10:32:07,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:07,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:07,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:07,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:07,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:07,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:07,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:07,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:07,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:07,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:07,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:07,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-12 10:32:07,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:07,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:07,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:07,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:07,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:07,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:07,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:07,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:07,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:07,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:07,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:07,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 10:32:07,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:07,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:07,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:07,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:07,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:07,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:07,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:07,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:07,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:07,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:07,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:07,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-12 10:32:07,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:07,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:07,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:07,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:07,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:07,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:07,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:07,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:07,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:07,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:07,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:07,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-12 10:32:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:07,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:07,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:07,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:07,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:07,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:07,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:07,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:07,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:07,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:07,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:07,251 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 33 proven. 318 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-12 10:32:07,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [21445924] [2020-10-12 10:32:07,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:32:07,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 10:32:07,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396097822] [2020-10-12 10:32:07,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 10:32:07,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:07,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 10:32:07,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-12 10:32:07,253 INFO L87 Difference]: Start difference. First operand 394 states and 445 transitions. Second operand 20 states. [2020-10-12 10:32:13,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:32:13,244 INFO L93 Difference]: Finished difference Result 577 states and 655 transitions. [2020-10-12 10:32:13,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2020-10-12 10:32:13,246 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 139 [2020-10-12 10:32:13,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:32:13,249 INFO L225 Difference]: With dead ends: 577 [2020-10-12 10:32:13,249 INFO L226 Difference]: Without dead ends: 561 [2020-10-12 10:32:13,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2246 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=726, Invalid=6930, Unknown=0, NotChecked=0, Total=7656 [2020-10-12 10:32:13,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2020-10-12 10:32:13,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 399. [2020-10-12 10:32:13,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2020-10-12 10:32:13,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 451 transitions. [2020-10-12 10:32:13,312 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 451 transitions. Word has length 139 [2020-10-12 10:32:13,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:32:13,313 INFO L479 AbstractCegarLoop]: Abstraction has 399 states and 451 transitions. [2020-10-12 10:32:13,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 10:32:13,313 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 451 transitions. [2020-10-12 10:32:13,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-12 10:32:13,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:13,314 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:32:13,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-12 10:32:13,314 INFO L427 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:13,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:13,315 INFO L82 PathProgramCache]: Analyzing trace with hash -307545969, now seen corresponding path program 4 times [2020-10-12 10:32:13,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:13,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825139078] [2020-10-12 10:32:13,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:13,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:13,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:13,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:14,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:14,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:18,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-12 10:32:18,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 10:32:18,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 10:32:18,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:18,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 10:32:18,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:32:18,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-12 10:32:18,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:18,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:18,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:18,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:32:18,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:18,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:18,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:18,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:18,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:18,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:18,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:18,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:32:18,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:18,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:18,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:18,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:18,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:18,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:18,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:18,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:18,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:18,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:18,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 10:32:18,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:18,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:18,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:18,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:18,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:18,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:18,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:18,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:18,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:18,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:18,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 10:32:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:18,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:18,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:18,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:18,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:18,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:18,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:18,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:18,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:18,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:18,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 10:32:18,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:18,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:18,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:18,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:18,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:18,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:18,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:18,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:18,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:18,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:18,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 10:32:18,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:18,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:18,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:18,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:18,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:18,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:18,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:18,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:18,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:18,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:18,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-12 10:32:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:18,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:18,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:18,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:18,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:18,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:18,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:18,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:18,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:18,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:18,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-12 10:32:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:18,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:18,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:18,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:18,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:18,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:18,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:18,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:18,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:18,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:18,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-12 10:32:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:18,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:18,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:18,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:18,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:18,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:18,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:18,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:18,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:18,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:18,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-12 10:32:18,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:18,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:18,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:18,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:18,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:18,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:18,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:18,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:18,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:18,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:18,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 10:32:18,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:18,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:18,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:18,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:18,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:18,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:18,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:18,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:18,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:18,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:18,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-12 10:32:18,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:18,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:18,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:18,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:18,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:18,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:18,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:18,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:18,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:18,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:18,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-12 10:32:18,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:18,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:18,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:18,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:18,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:18,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:18,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:18,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:18,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:18,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:18,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:18,938 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 22 proven. 329 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-12 10:32:18,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825139078] [2020-10-12 10:32:18,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:32:18,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 10:32:18,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643613355] [2020-10-12 10:32:18,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 10:32:18,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:18,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 10:32:18,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=420, Unknown=0, NotChecked=0, Total=462 [2020-10-12 10:32:18,939 INFO L87 Difference]: Start difference. First operand 399 states and 451 transitions. Second operand 22 states. [2020-10-12 10:32:27,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:32:27,065 INFO L93 Difference]: Finished difference Result 576 states and 655 transitions. [2020-10-12 10:32:27,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2020-10-12 10:32:27,066 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 139 [2020-10-12 10:32:27,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:32:27,069 INFO L225 Difference]: With dead ends: 576 [2020-10-12 10:32:27,069 INFO L226 Difference]: Without dead ends: 574 [2020-10-12 10:32:27,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2416 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=751, Invalid=7805, Unknown=0, NotChecked=0, Total=8556 [2020-10-12 10:32:27,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2020-10-12 10:32:27,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 444. [2020-10-12 10:32:27,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 444 states. [2020-10-12 10:32:27,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 505 transitions. [2020-10-12 10:32:27,150 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 505 transitions. Word has length 139 [2020-10-12 10:32:27,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:32:27,151 INFO L479 AbstractCegarLoop]: Abstraction has 444 states and 505 transitions. [2020-10-12 10:32:27,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 10:32:27,151 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 505 transitions. [2020-10-12 10:32:27,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-12 10:32:27,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:27,153 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:32:27,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-12 10:32:27,153 INFO L427 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:27,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:27,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1586211290, now seen corresponding path program 14 times [2020-10-12 10:32:27,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:27,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [629093622] [2020-10-12 10:32:27,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:27,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:27,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:28,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:28,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-12 10:32:28,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:32:28,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1397 [2020-10-12 10:32:28,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:28,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 10:32:28,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 10:32:28,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-12 10:32:28,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:30,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:30,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:30,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:30,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:32:30,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:30,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:30,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:30,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:30,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:30,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:30,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:30,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:32:30,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:30,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:30,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:30,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:30,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:30,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:32:30,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:30,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:32:30,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:30,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:32:30,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:30,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 10:32:30,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:30,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:30,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:30,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:30,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:30,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:32:30,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:30,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:30,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:30,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:30,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:30,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-12 10:32:30,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:30,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:30,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:30,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:30,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:30,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:30,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:30,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:30,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:30,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:30,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:30,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 10:32:30,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:30,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:30,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:30,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:30,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:30,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:30,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:30,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:30,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:30,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:30,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:30,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 10:32:30,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:30,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:30,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:30,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:30,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:30,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:30,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:30,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:30,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:30,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:30,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:30,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-12 10:32:30,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:30,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:30,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:30,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:30,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:30,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:30,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:30,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:30,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:30,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:30,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:30,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-12 10:32:30,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:30,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:30,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:30,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:30,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:30,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:32:30,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:30,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:30,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:30,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:30,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:30,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-12 10:32:30,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:30,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:30,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:30,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:30,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:30,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:30,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:30,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:30,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:30,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:30,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:30,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-12 10:32:30,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:30,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:30,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:30,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:30,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:30,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:30,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:30,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:30,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:30,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:30,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:30,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 10:32:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:30,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:30,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:30,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:30,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:30,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:32:30,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:30,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:30,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:30,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:30,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:30,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-12 10:32:30,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:30,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:30,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:30,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:30,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:30,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:30,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:30,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:30,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:30,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:30,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:30,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-12 10:32:30,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:30,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:30,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:30,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:30,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:30,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:30,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:30,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:30,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:30,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:30,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:30,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-12 10:32:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:30,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:30,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:30,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:30,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:30,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:30,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:30,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:30,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:30,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:30,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:30,545 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 390 proven. 21 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-12 10:32:30,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [629093622] [2020-10-12 10:32:30,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:32:30,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-12 10:32:30,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501588552] [2020-10-12 10:32:30,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-12 10:32:30,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:30,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-12 10:32:30,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2020-10-12 10:32:30,547 INFO L87 Difference]: Start difference. First operand 444 states and 505 transitions. Second operand 24 states. [2020-10-12 10:32:32,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:32:32,913 INFO L93 Difference]: Finished difference Result 856 states and 974 transitions. [2020-10-12 10:32:32,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 10:32:32,914 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 148 [2020-10-12 10:32:32,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:32:32,918 INFO L225 Difference]: With dead ends: 856 [2020-10-12 10:32:32,918 INFO L226 Difference]: Without dead ends: 499 [2020-10-12 10:32:32,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=372, Invalid=1350, Unknown=0, NotChecked=0, Total=1722 [2020-10-12 10:32:32,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2020-10-12 10:32:32,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 474. [2020-10-12 10:32:32,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 474 states. [2020-10-12 10:32:32,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 535 transitions. [2020-10-12 10:32:32,993 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 535 transitions. Word has length 148 [2020-10-12 10:32:32,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:32:32,993 INFO L479 AbstractCegarLoop]: Abstraction has 474 states and 535 transitions. [2020-10-12 10:32:32,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-12 10:32:32,994 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 535 transitions. [2020-10-12 10:32:32,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-12 10:32:32,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:32,996 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:32:32,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-12 10:32:32,996 INFO L427 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:32,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:32,997 INFO L82 PathProgramCache]: Analyzing trace with hash 464026023, now seen corresponding path program 15 times [2020-10-12 10:32:32,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:32,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246019531] [2020-10-12 10:32:32,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:33,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:33,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:34,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:34,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-12 10:32:34,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:34,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 984 [2020-10-12 10:32:34,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:34,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 10:32:34,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 10:32:34,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-12 10:32:34,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:34,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:34,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:34,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:34,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:34,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:32:34,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:34,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:34,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:34,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:34,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:34,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:34,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:34,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 10:32:34,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:34,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:34,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:34,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:34,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:34,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:32:34,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:34,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:34,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:34,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:34,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:34,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 10:32:34,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:34,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:34,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:34,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:34,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:34,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:32:34,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:34,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:34,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:34,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:34,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:34,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 10:32:34,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:34,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:34,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:34,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:34,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:34,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:32:34,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:34,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:34,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:34,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:34,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:34,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-12 10:32:34,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:34,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:34,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:34,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:34,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:34,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:32:34,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:34,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:34,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:34,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:34,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:34,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-12 10:32:34,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:34,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:34,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:34,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:34,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:34,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:32:34,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:34,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:34,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:34,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:34,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:34,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 10:32:34,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:34,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:34,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:34,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:34,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:34,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:32:34,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:34,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:34,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:34,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:34,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:34,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 10:32:34,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:34,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:34,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:34,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:34,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:34,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:32:34,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:34,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:34,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:34,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:34,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:34,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-12 10:32:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:34,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:34,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:34,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:34,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:34,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:32:34,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:34,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:34,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:34,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:34,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:34,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-12 10:32:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:34,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:34,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:34,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:34,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:34,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:32:34,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:34,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:34,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:34,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:34,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:34,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-12 10:32:34,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:34,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:34,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:34,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:34,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:34,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:32:34,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:34,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:34,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:34,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:34,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:34,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-12 10:32:34,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:34,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:34,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:34,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:34,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:34,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:32:34,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:34,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:34,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:34,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:34,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:34,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-12 10:32:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:34,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:34,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:34,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:34,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:34,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:34,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:34,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:34,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:34,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:34,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:34,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-12 10:32:34,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:34,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:34,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:34,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:34,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:34,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:32:34,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:34,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:34,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:34,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:34,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:34,814 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 36 proven. 394 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-12 10:32:34,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246019531] [2020-10-12 10:32:34,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:32:34,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 10:32:34,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246477718] [2020-10-12 10:32:34,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 10:32:34,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:34,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 10:32:34,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=460, Unknown=0, NotChecked=0, Total=506 [2020-10-12 10:32:34,816 INFO L87 Difference]: Start difference. First operand 474 states and 535 transitions. Second operand 23 states.