/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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-cav19/array_min_and_copy_shift_sum_add.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 23:10:41,181 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 23:10:41,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 23:10:41,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 23:10:41,207 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 23:10:41,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 23:10:41,210 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 23:10:41,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 23:10:41,214 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 23:10:41,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 23:10:41,219 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 23:10:41,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 23:10:41,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 23:10:41,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 23:10:41,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 23:10:41,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 23:10:41,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 23:10:41,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 23:10:41,227 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 23:10:41,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 23:10:41,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 23:10:41,231 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 23:10:41,232 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 23:10:41,233 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 23:10:41,236 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 23:10:41,236 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 23:10:41,236 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 23:10:41,237 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 23:10:41,238 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 23:10:41,238 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 23:10:41,239 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 23:10:41,239 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 23:10:41,240 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 23:10:41,241 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 23:10:41,242 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 23:10:41,242 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 23:10:41,243 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 23:10:41,243 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 23:10:41,243 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 23:10:41,244 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 23:10:41,245 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 23:10:41,245 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 23:10:41,268 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 23:10:41,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 23:10:41,270 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 23:10:41,270 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 23:10:41,270 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 23:10:41,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 23:10:41,271 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 23:10:41,271 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 23:10:41,271 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 23:10:41,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 23:10:41,271 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 23:10:41,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 23:10:41,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 23:10:41,272 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 23:10:41,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 23:10:41,272 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 23:10:41,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 23:10:41,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 23:10:41,273 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 23:10:41,273 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 23:10:41,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 23:10:41,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 23:10:41,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 23:10:41,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 23:10:41,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 23:10:41,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 23:10:41,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 23:10:41,275 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 23:10:41,275 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 23:10:41,275 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-13 23:10:41,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 23:10:41,623 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 23:10:41,626 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 23:10:41,628 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 23:10:41,628 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 23:10:41,629 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-cav19/array_min_and_copy_shift_sum_add.c [2020-10-13 23:10:41,708 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e85b95fa6/492257657893457998b8aca84602240f/FLAG56eacc964 [2020-10-13 23:10:42,232 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 23:10:42,232 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-cav19/array_min_and_copy_shift_sum_add.c [2020-10-13 23:10:42,239 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e85b95fa6/492257657893457998b8aca84602240f/FLAG56eacc964 [2020-10-13 23:10:42,602 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e85b95fa6/492257657893457998b8aca84602240f [2020-10-13 23:10:42,611 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 23:10:42,612 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 23:10:42,613 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 23:10:42,613 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 23:10:42,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 23:10:42,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:10:42" (1/1) ... [2020-10-13 23:10:42,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67fe5b14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:42, skipping insertion in model container [2020-10-13 23:10:42,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:10:42" (1/1) ... [2020-10-13 23:10:42,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 23:10:42,651 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 23:10:42,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:10:42,831 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 23:10:42,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:10:42,969 INFO L208 MainTranslator]: Completed translation [2020-10-13 23:10:42,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:42 WrapperNode [2020-10-13 23:10:42,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 23:10:42,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 23:10:42,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 23:10:42,971 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 23:10:42,983 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:42" (1/1) ... [2020-10-13 23:10:42,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:42" (1/1) ... [2020-10-13 23:10:42,990 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:42" (1/1) ... [2020-10-13 23:10:42,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:42" (1/1) ... [2020-10-13 23:10:42,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:42" (1/1) ... [2020-10-13 23:10:43,003 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:42" (1/1) ... [2020-10-13 23:10:43,005 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:42" (1/1) ... [2020-10-13 23:10:43,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 23:10:43,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 23:10:43,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 23:10:43,008 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 23:10:43,008 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:42" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 23:10:43,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 23:10:43,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 23:10:43,067 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 23:10:43,067 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 23:10:43,067 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 23:10:43,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 23:10:43,067 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 23:10:43,068 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 23:10:43,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 23:10:43,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 23:10:43,068 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 23:10:43,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 23:10:43,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 23:10:43,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 23:10:43,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 23:10:43,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 23:10:43,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 23:10:43,399 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 23:10:43,399 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-13 23:10:43,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:10:43 BoogieIcfgContainer [2020-10-13 23:10:43,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 23:10:43,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 23:10:43,406 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 23:10:43,409 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 23:10:43,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:10:42" (1/3) ... [2020-10-13 23:10:43,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38347a41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:10:43, skipping insertion in model container [2020-10-13 23:10:43,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:42" (2/3) ... [2020-10-13 23:10:43,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38347a41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:10:43, skipping insertion in model container [2020-10-13 23:10:43,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:10:43" (3/3) ... [2020-10-13 23:10:43,413 INFO L109 eAbstractionObserver]: Analyzing ICFG array_min_and_copy_shift_sum_add.c [2020-10-13 23:10:43,423 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 23:10:43,430 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 23:10:43,444 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 23:10:43,469 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 23:10:43,469 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 23:10:43,469 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 23:10:43,469 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 23:10:43,469 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 23:10:43,469 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 23:10:43,470 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 23:10:43,470 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 23:10:43,488 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-10-13 23:10:43,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-13 23:10:43,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:10:43,495 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] [2020-10-13 23:10:43,496 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:10:43,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:10:43,501 INFO L82 PathProgramCache]: Analyzing trace with hash -374325002, now seen corresponding path program 1 times [2020-10-13 23:10:43,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:10:43,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747797821] [2020-10-13 23:10:43,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:10:43,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:43,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:43,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:43,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:44,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:44,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 23:10:44,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:10:44,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 500 [2020-10-13 23:10:44,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:44,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:44,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:10:44,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 23:10:44,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:10:44,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 23:10:44,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:10:44,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:44,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:44,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:44,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:10:44,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:10:44,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:10:44,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:44,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:44,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:10:44,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:10:44,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:10:44,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:10:44,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 23:10:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:44,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:44,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:44,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:44,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:10:44,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:10:44,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:10:44,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:44,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:44,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:10:44,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:10:44,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:10:44,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 23:10:44,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 23:10:44,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:44,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:44,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:44,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:10:44,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:10:44,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 23:10:44,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:44,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:44,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:10:44,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 23:10:44,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:10:44,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 23:10:44,253 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 23:10:44,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747797821] [2020-10-13 23:10:44,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:10:44,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 23:10:44,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498998470] [2020-10-13 23:10:44,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 23:10:44,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:10:44,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 23:10:44,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:10:44,277 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2020-10-13 23:10:44,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:10:44,392 INFO L93 Difference]: Finished difference Result 69 states and 94 transitions. [2020-10-13 23:10:44,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 23:10:44,394 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-13 23:10:44,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:10:44,403 INFO L225 Difference]: With dead ends: 69 [2020-10-13 23:10:44,404 INFO L226 Difference]: Without dead ends: 31 [2020-10-13 23:10:44,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:10:44,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-13 23:10:44,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-13 23:10:44,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-13 23:10:44,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2020-10-13 23:10:44,453 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 27 [2020-10-13 23:10:44,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:10:44,453 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2020-10-13 23:10:44,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 23:10:44,454 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2020-10-13 23:10:44,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-13 23:10:44,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:10:44,456 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] [2020-10-13 23:10:44,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 23:10:44,457 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:10:44,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:10:44,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1644892538, now seen corresponding path program 1 times [2020-10-13 23:10:44,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:10:44,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468889684] [2020-10-13 23:10:44,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:10:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:44,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:44,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:44,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 23:10:44,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:10:44,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-13 23:10:44,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:44,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:44,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:10:44,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:10:44,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 23:10:44,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:10:44,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:10:44,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:44,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:44,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:44,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:10:44,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:10:44,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:10:44,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:44,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:44,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:10:44,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:10:44,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:10:44,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:10:44,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 23:10:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:44,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:44,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:44,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:10:44,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:10:44,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:10:44,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:44,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:44,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:10:44,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:10:44,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:10:44,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:10:44,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 23:10:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:44,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:44,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:44,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:10:44,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:10:44,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 23:10:44,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:44,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:44,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:10:44,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:10:44,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:10:44,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:10:44,700 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 23:10:44,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468889684] [2020-10-13 23:10:44,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:10:44,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 23:10:44,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009981579] [2020-10-13 23:10:44,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 23:10:44,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:10:44,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 23:10:44,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:10:44,710 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand 6 states. [2020-10-13 23:10:44,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:10:44,880 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2020-10-13 23:10:44,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 23:10:44,881 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-10-13 23:10:44,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:10:44,882 INFO L225 Difference]: With dead ends: 37 [2020-10-13 23:10:44,882 INFO L226 Difference]: Without dead ends: 32 [2020-10-13 23:10:44,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:10:44,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-13 23:10:44,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-13 23:10:44,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-13 23:10:44,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-10-13 23:10:44,893 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 27 [2020-10-13 23:10:44,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:10:44,895 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-10-13 23:10:44,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 23:10:44,895 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-10-13 23:10:44,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-13 23:10:44,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:10:44,897 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] [2020-10-13 23:10:44,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 23:10:44,897 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:10:44,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:10:44,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1157530424, now seen corresponding path program 1 times [2020-10-13 23:10:44,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:10:44,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939716180] [2020-10-13 23:10:44,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:10:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:44,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:44,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:45,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:45,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 23:10:45,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:10:45,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-13 23:10:45,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:45,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:45,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:10:45,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:10:45,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:10:45,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:10:45,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:10:45,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:45,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:45,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:45,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:10:45,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:10:45,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:10:45,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:45,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:45,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:10:45,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:10:45,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:10:45,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 23:10:45,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 23:10:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:45,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:45,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:45,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:10:45,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:10:45,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 23:10:45,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:45,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:45,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:10:45,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:10:45,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:10:45,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 23:10:45,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 23:10:45,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:45,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:45,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:45,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:10:45,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:10:45,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:10:45,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:45,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:45,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:10:45,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:10:45,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:10:45,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:10:45,306 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 23:10:45,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939716180] [2020-10-13 23:10:45,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:10:45,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 23:10:45,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679182825] [2020-10-13 23:10:45,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 23:10:45,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:10:45,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 23:10:45,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:10:45,310 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 6 states. [2020-10-13 23:10:45,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:10:45,496 INFO L93 Difference]: Finished difference Result 56 states and 69 transitions. [2020-10-13 23:10:45,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 23:10:45,496 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-10-13 23:10:45,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:10:45,498 INFO L225 Difference]: With dead ends: 56 [2020-10-13 23:10:45,498 INFO L226 Difference]: Without dead ends: 41 [2020-10-13 23:10:45,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:10:45,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-13 23:10:45,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2020-10-13 23:10:45,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-13 23:10:45,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2020-10-13 23:10:45,509 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 29 [2020-10-13 23:10:45,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:10:45,509 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2020-10-13 23:10:45,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 23:10:45,509 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2020-10-13 23:10:45,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-13 23:10:45,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:10:45,511 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:10:45,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 23:10:45,512 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:10:45,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:10:45,513 INFO L82 PathProgramCache]: Analyzing trace with hash -155742140, now seen corresponding path program 1 times [2020-10-13 23:10:45,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:10:45,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321355408] [2020-10-13 23:10:45,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:10:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:45,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:45,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:46,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:46,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:46,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:46,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:47,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:47,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:48,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:48,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:48,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:48,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-13 23:10:48,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 23:10:48,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2900 [2020-10-13 23:10:48,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:48,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:48,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 23:10:48,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:10:48,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 23:10:48,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 23:10:48,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:10:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:48,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:48,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:48,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:10:48,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:10:48,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 23:10:48,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:48,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:48,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:10:48,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:10:48,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:10:48,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:10:48,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 23:10:48,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:48,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:48,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:48,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:10:48,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:10:48,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:10:48,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:48,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:48,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:10:48,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:10:48,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:10:48,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:10:48,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 23:10:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:48,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:48,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:48,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:10:48,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:10:48,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 23:10:48,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:48,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:48,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:10:48,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:10:48,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:10:48,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:10:48,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 23:10:48,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:48,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:48,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:48,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:10:48,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:10:48,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 23:10:48,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:48,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:48,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:10:48,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:10:48,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:10:48,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:10:48,999 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 23:10:48,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321355408] [2020-10-13 23:10:48,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:10:49,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:10:49,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44569202] [2020-10-13 23:10:49,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:10:49,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:10:49,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:10:49,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:10:49,002 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 14 states. [2020-10-13 23:10:49,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:10:49,752 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2020-10-13 23:10:49,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 23:10:49,752 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 41 [2020-10-13 23:10:49,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:10:49,754 INFO L225 Difference]: With dead ends: 59 [2020-10-13 23:10:49,754 INFO L226 Difference]: Without dead ends: 54 [2020-10-13 23:10:49,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2020-10-13 23:10:49,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-13 23:10:49,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 47. [2020-10-13 23:10:49,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-13 23:10:49,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 58 transitions. [2020-10-13 23:10:49,767 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 58 transitions. Word has length 41 [2020-10-13 23:10:49,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:10:49,767 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 58 transitions. [2020-10-13 23:10:49,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:10:49,768 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 58 transitions. [2020-10-13 23:10:49,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-13 23:10:49,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:10:49,770 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:10:49,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 23:10:49,770 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:10:49,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:10:49,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1435605818, now seen corresponding path program 1 times [2020-10-13 23:10:49,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:10:49,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207661024] [2020-10-13 23:10:49,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:10:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:49,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:49,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:50,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:50,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:50,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:51,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:51,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:51,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:52,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:52,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:52,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:52,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-13 23:10:52,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 23:10:52,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2416 [2020-10-13 23:10:52,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:52,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:52,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 23:10:52,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:10:52,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 23:10:52,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:10:52,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:10:52,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:52,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:52,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:52,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:10:52,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:10:52,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:10:52,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:52,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:52,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:10:52,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:10:52,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:10:52,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:10:52,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 23:10:52,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:52,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:52,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:52,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:10:52,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:10:52,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:10:52,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:52,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:52,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:10:52,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:10:52,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:10:52,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:10:52,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 23:10:52,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:52,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:52,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:52,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:10:52,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:10:52,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 23:10:52,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:52,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:52,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:10:52,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:10:52,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:10:52,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:10:52,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 23:10:52,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:52,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:52,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:52,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:10:52,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:10:52,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:10:52,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:52,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:52,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:10:52,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:10:52,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:10:52,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:10:52,578 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 23:10:52,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207661024] [2020-10-13 23:10:52,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:10:52,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 23:10:52,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722909152] [2020-10-13 23:10:52,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 23:10:52,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:10:52,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 23:10:52,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:10:52,581 INFO L87 Difference]: Start difference. First operand 47 states and 58 transitions. Second operand 16 states. [2020-10-13 23:10:53,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:10:53,573 INFO L93 Difference]: Finished difference Result 59 states and 71 transitions. [2020-10-13 23:10:53,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 23:10:53,574 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 41 [2020-10-13 23:10:53,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:10:53,576 INFO L225 Difference]: With dead ends: 59 [2020-10-13 23:10:53,578 INFO L226 Difference]: Without dead ends: 54 [2020-10-13 23:10:53,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2020-10-13 23:10:53,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-13 23:10:53,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2020-10-13 23:10:53,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-13 23:10:53,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2020-10-13 23:10:53,597 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 41 [2020-10-13 23:10:53,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:10:53,599 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2020-10-13 23:10:53,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 23:10:53,599 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2020-10-13 23:10:53,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-13 23:10:53,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:10:53,605 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:10:53,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 23:10:53,607 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:10:53,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:10:53,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1619425154, now seen corresponding path program 2 times [2020-10-13 23:10:53,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:10:53,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294628627] [2020-10-13 23:10:53,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:10:53,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:53,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:53,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:53,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:54,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:54,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:55,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:55,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:55,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 23:10:55,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 23:10:55,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1805 [2020-10-13 23:10:55,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:55,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:55,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 23:10:55,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:10:55,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 23:10:55,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:10:55,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:10:55,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:55,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:55,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:55,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:10:55,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:10:55,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:10:55,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:55,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:55,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:10:55,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:10:55,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:10:55,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:10:55,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 23:10:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:55,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:55,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:55,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:10:55,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:10:55,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:10:55,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:55,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:55,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:10:55,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:10:55,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:10:55,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:10:55,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 23:10:55,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:55,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:55,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:55,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:10:55,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:10:55,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:10:55,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:55,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:55,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:10:55,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:10:55,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:10:55,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:10:55,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 23:10:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:55,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:55,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:10:55,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:10:55,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:10:55,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:10:55,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:10:55,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:10:55,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:10:55,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:10:55,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:10:55,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:10:55,535 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-13 23:10:55,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294628627] [2020-10-13 23:10:55,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:10:55,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 23:10:55,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872835359] [2020-10-13 23:10:55,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 23:10:55,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:10:55,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 23:10:55,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:10:55,541 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 8 states. [2020-10-13 23:10:55,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:10:55,790 INFO L93 Difference]: Finished difference Result 71 states and 88 transitions. [2020-10-13 23:10:55,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 23:10:55,790 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-10-13 23:10:55,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:10:55,792 INFO L225 Difference]: With dead ends: 71 [2020-10-13 23:10:55,792 INFO L226 Difference]: Without dead ends: 52 [2020-10-13 23:10:55,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:10:55,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-13 23:10:55,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 42. [2020-10-13 23:10:55,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-13 23:10:55,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2020-10-13 23:10:55,810 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 43 [2020-10-13 23:10:55,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:10:55,810 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2020-10-13 23:10:55,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 23:10:55,811 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2020-10-13 23:10:55,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 23:10:55,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:10:55,815 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-13 23:10:55,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 23:10:55,815 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:10:55,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:10:55,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1293146800, now seen corresponding path program 3 times [2020-10-13 23:10:55,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:10:55,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223078206] [2020-10-13 23:10:55,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:10:55,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:10:55,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:55,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:56,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:56,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:56,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:57,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:57,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:58,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:59,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:10:59,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:00,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:00,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:00,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:00,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 23:11:00,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 23:11:00,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 23:11:00,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:00,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:00,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 23:11:00,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:11:00,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 23:11:00,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:11:00,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:11:00,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:00,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:00,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:00,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:11:00,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:00,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:11:00,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:00,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:00,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:00,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:00,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:00,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:11:00,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 23:11:00,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:00,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:00,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:00,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:00,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:00,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:00,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:00,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:00,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:00,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:00,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:00,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:11:00,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 23:11:00,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:00,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:00,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:00,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:00,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:00,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:00,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:00,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:00,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:00,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:00,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:00,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:11:00,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 23:11:00,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:00,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:00,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:00,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:00,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:00,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:11:00,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:00,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:00,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:11:00,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:00,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:11:00,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:11:00,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 23:11:00,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:00,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:00,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:00,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:00,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:00,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:11:00,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:00,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:00,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:11:00,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:00,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:11:00,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:11:00,968 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-13 23:11:00,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223078206] [2020-10-13 23:11:00,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:11:00,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 23:11:00,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003687202] [2020-10-13 23:11:00,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 23:11:00,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:11:00,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 23:11:00,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:11:00,974 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand 8 states. [2020-10-13 23:11:01,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:11:01,208 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2020-10-13 23:11:01,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 23:11:01,209 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-10-13 23:11:01,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:11:01,210 INFO L225 Difference]: With dead ends: 49 [2020-10-13 23:11:01,210 INFO L226 Difference]: Without dead ends: 44 [2020-10-13 23:11:01,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:11:01,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-13 23:11:01,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-10-13 23:11:01,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-13 23:11:01,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-10-13 23:11:01,219 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 53 [2020-10-13 23:11:01,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:11:01,220 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-10-13 23:11:01,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 23:11:01,220 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-10-13 23:11:01,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 23:11:01,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:11:01,221 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-13 23:11:01,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 23:11:01,221 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:11:01,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:11:01,222 INFO L82 PathProgramCache]: Analyzing trace with hash -504759922, now seen corresponding path program 4 times [2020-10-13 23:11:01,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:11:01,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34214565] [2020-10-13 23:11:01,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:11:01,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:01,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:01,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:01,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:02,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:03,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:03,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:04,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:04,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:05,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:05,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:06,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:06,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 23:11:06,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 23:11:06,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:11:06,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:06,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:06,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 23:11:06,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:11:06,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 23:11:06,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:11:07,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:11:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:07,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:07,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:07,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:11:07,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:07,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:11:07,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:07,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:07,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:07,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:07,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:07,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:11:07,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 23:11:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:07,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:07,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:07,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:07,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:07,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:11:07,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:07,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:07,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:07,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:07,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:07,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:11:07,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 23:11:07,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:07,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:07,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:07,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:07,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:07,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:11:07,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:07,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:07,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:11:07,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:07,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:11:07,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:11:07,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 23:11:07,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:07,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:07,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:07,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:07,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:07,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 23:11:07,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:07,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:07,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:11:07,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:07,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:11:07,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:07,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 23:11:07,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:07,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:07,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:07,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:07,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:07,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 23:11:07,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:07,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:07,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:11:07,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:07,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:11:07,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:11:07,692 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-13 23:11:07,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34214565] [2020-10-13 23:11:07,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:11:07,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 23:11:07,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396679733] [2020-10-13 23:11:07,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 23:11:07,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:11:07,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 23:11:07,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2020-10-13 23:11:07,696 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 21 states. [2020-10-13 23:11:08,384 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2020-10-13 23:11:08,787 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-10-13 23:11:09,119 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2020-10-13 23:11:09,287 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2020-10-13 23:11:09,504 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2020-10-13 23:11:09,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:11:09,826 INFO L93 Difference]: Finished difference Result 75 states and 92 transitions. [2020-10-13 23:11:09,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-13 23:11:09,827 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 55 [2020-10-13 23:11:09,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:11:09,829 INFO L225 Difference]: With dead ends: 75 [2020-10-13 23:11:09,829 INFO L226 Difference]: Without dead ends: 70 [2020-10-13 23:11:09,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=209, Invalid=1051, Unknown=0, NotChecked=0, Total=1260 [2020-10-13 23:11:09,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-13 23:11:09,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 61. [2020-10-13 23:11:09,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-13 23:11:09,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 75 transitions. [2020-10-13 23:11:09,857 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 75 transitions. Word has length 55 [2020-10-13 23:11:09,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:11:09,858 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 75 transitions. [2020-10-13 23:11:09,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 23:11:09,858 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 75 transitions. [2020-10-13 23:11:09,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 23:11:09,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:11:09,861 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-13 23:11:09,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 23:11:09,862 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:11:09,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:11:09,862 INFO L82 PathProgramCache]: Analyzing trace with hash 2101263632, now seen corresponding path program 1 times [2020-10-13 23:11:09,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:11:09,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193821848] [2020-10-13 23:11:09,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:11:09,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:09,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:10,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:10,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:11,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:11,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:11,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:12,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:12,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:13,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:13,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:13,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:13,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:14,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:14,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:14,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:14,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:14,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:14,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 23:11:14,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 23:11:14,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:11:14,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:14,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:14,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 23:11:14,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:11:14,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 23:11:14,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:11:15,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:11:15,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:15,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:15,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:15,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:11:15,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:15,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:11:15,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:15,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:15,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:15,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:15,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:15,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:11:15,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 23:11:15,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:15,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:15,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:15,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:15,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:15,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:15,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:15,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:15,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:15,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:15,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:15,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:11:15,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 23:11:15,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:15,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:15,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:15,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:15,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:15,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:11:15,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:15,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:15,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:11:15,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:15,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:11:15,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:11:15,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 23:11:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:15,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:15,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:15,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:15,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:15,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:11:15,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:15,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:15,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:11:15,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:15,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:11:15,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:11:15,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 23:11:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:15,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:15,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:15,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:15,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:15,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:11:15,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:15,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:15,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:11:15,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:15,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:11:15,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:11:15,907 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-13 23:11:15,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193821848] [2020-10-13 23:11:15,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:11:15,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 23:11:15,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807401194] [2020-10-13 23:11:15,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 23:11:15,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:11:15,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 23:11:15,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2020-10-13 23:11:15,913 INFO L87 Difference]: Start difference. First operand 61 states and 75 transitions. Second operand 21 states. [2020-10-13 23:11:17,030 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2020-10-13 23:11:17,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:11:17,907 INFO L93 Difference]: Finished difference Result 92 states and 113 transitions. [2020-10-13 23:11:17,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-13 23:11:17,908 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 55 [2020-10-13 23:11:17,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:11:17,909 INFO L225 Difference]: With dead ends: 92 [2020-10-13 23:11:17,910 INFO L226 Difference]: Without dead ends: 87 [2020-10-13 23:11:17,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=268, Invalid=1292, Unknown=0, NotChecked=0, Total=1560 [2020-10-13 23:11:17,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-13 23:11:17,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 69. [2020-10-13 23:11:17,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-13 23:11:17,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 85 transitions. [2020-10-13 23:11:17,936 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 85 transitions. Word has length 55 [2020-10-13 23:11:17,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:11:17,938 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 85 transitions. [2020-10-13 23:11:17,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 23:11:17,938 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 85 transitions. [2020-10-13 23:11:17,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 23:11:17,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:11:17,939 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-13 23:11:17,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 23:11:17,939 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:11:17,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:11:17,939 INFO L82 PathProgramCache]: Analyzing trace with hash 881443472, now seen corresponding path program 2 times [2020-10-13 23:11:17,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:11:17,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859934630] [2020-10-13 23:11:17,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:11:17,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:17,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:18,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:18,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:18,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:19,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:19,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:19,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:20,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:20,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:20,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:20,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:21,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:21,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:22,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:22,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:22,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:22,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:22,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:22,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:22,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 23:11:22,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 23:11:22,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4932 [2020-10-13 23:11:22,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:22,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:22,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 23:11:22,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:11:22,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 23:11:22,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:23,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:11:23,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:23,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:23,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:23,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:11:23,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:23,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:23,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:23,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:23,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:23,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:23,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:23,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:23,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 23:11:23,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:23,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:23,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:23,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:23,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:23,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:23,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:23,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:23,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:23,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:23,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:23,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:23,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 23:11:23,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:23,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:23,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:23,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:23,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:23,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:11:23,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:23,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:23,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:11:23,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:23,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:11:23,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:11:23,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 23:11:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:23,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:23,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:23,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:23,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:23,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:11:23,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:23,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:23,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:11:23,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:23,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:11:23,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:23,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 23:11:23,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:23,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:23,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:23,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:23,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:23,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:11:23,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:23,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:23,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:11:23,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:23,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:11:23,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:23,861 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-13 23:11:23,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859934630] [2020-10-13 23:11:23,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:11:23,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 23:11:23,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249268120] [2020-10-13 23:11:23,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 23:11:23,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:11:23,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 23:11:23,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2020-10-13 23:11:23,864 INFO L87 Difference]: Start difference. First operand 69 states and 85 transitions. Second operand 23 states. [2020-10-13 23:11:25,400 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2020-10-13 23:11:26,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:11:26,043 INFO L93 Difference]: Finished difference Result 105 states and 129 transitions. [2020-10-13 23:11:26,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-13 23:11:26,044 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 55 [2020-10-13 23:11:26,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:11:26,046 INFO L225 Difference]: With dead ends: 105 [2020-10-13 23:11:26,046 INFO L226 Difference]: Without dead ends: 100 [2020-10-13 23:11:26,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=310, Invalid=2240, Unknown=0, NotChecked=0, Total=2550 [2020-10-13 23:11:26,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-13 23:11:26,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 77. [2020-10-13 23:11:26,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-13 23:11:26,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 99 transitions. [2020-10-13 23:11:26,069 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 99 transitions. Word has length 55 [2020-10-13 23:11:26,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:11:26,069 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 99 transitions. [2020-10-13 23:11:26,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 23:11:26,070 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 99 transitions. [2020-10-13 23:11:26,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 23:11:26,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:11:26,070 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-13 23:11:26,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 23:11:26,071 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:11:26,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:11:26,071 INFO L82 PathProgramCache]: Analyzing trace with hash -807500270, now seen corresponding path program 2 times [2020-10-13 23:11:26,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:11:26,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [71519652] [2020-10-13 23:11:26,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:11:26,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:26,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:26,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:26,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:26,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:27,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:27,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:27,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:27,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:27,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:28,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:28,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:28,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:28,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:29,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:29,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:29,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:29,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:29,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:29,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:29,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 23:11:29,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 23:11:29,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3787 [2020-10-13 23:11:29,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:29,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:29,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 23:11:29,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:11:29,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 23:11:29,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:30,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:11:30,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:30,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:30,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:30,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:11:30,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:30,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:30,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:30,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:30,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:30,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:30,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:30,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:30,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 23:11:30,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:30,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:30,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:30,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:30,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:30,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:30,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:30,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:30,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:30,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:30,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:30,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:30,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 23:11:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:30,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:30,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:30,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:30,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:30,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:30,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:30,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:30,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:11:30,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:30,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:11:30,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:30,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 23:11:30,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:30,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:30,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:30,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:30,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:30,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:11:30,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:30,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:30,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:11:30,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:30,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:11:30,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:30,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 23:11:30,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:30,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:30,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:30,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:30,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:30,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:11:30,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:30,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:30,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:11:30,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:30,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:11:30,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:30,768 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-13 23:11:30,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [71519652] [2020-10-13 23:11:30,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:11:30,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 23:11:30,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43969631] [2020-10-13 23:11:30,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 23:11:30,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:11:30,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 23:11:30,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2020-10-13 23:11:30,770 INFO L87 Difference]: Start difference. First operand 77 states and 99 transitions. Second operand 22 states. [2020-10-13 23:11:31,921 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2020-10-13 23:11:32,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:11:32,683 INFO L93 Difference]: Finished difference Result 105 states and 132 transitions. [2020-10-13 23:11:32,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-13 23:11:32,684 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 55 [2020-10-13 23:11:32,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:11:32,685 INFO L225 Difference]: With dead ends: 105 [2020-10-13 23:11:32,686 INFO L226 Difference]: Without dead ends: 100 [2020-10-13 23:11:32,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=327, Invalid=1743, Unknown=0, NotChecked=0, Total=2070 [2020-10-13 23:11:32,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-13 23:11:32,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 63. [2020-10-13 23:11:32,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-13 23:11:32,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 80 transitions. [2020-10-13 23:11:32,700 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 80 transitions. Word has length 55 [2020-10-13 23:11:32,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:11:32,700 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 80 transitions. [2020-10-13 23:11:32,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 23:11:32,700 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 80 transitions. [2020-10-13 23:11:32,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 23:11:32,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:11:32,701 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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] [2020-10-13 23:11:32,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 23:11:32,701 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:11:32,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:11:32,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1220785740, now seen corresponding path program 5 times [2020-10-13 23:11:32,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:11:32,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412112489] [2020-10-13 23:11:32,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:11:32,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:32,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:32,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:32,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:33,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:33,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:33,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:33,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:34,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:34,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:35,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:35,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:35,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:35,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:35,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 23:11:35,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 23:11:35,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3182 [2020-10-13 23:11:35,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:35,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:35,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:11:35,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:11:35,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 23:11:35,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:35,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:11:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:35,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:35,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:35,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:11:35,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:35,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:35,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:35,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:35,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:35,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:35,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:35,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:35,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 23:11:35,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:35,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:35,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:35,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:35,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:35,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:35,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:35,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:35,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:35,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:35,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:35,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:35,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 23:11:35,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:35,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:35,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:35,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:35,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:35,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:11:35,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:35,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:35,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:35,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:35,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:35,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:35,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 23:11:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:35,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:35,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:35,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:35,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:35,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:35,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:35,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:35,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:11:35,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:35,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:11:35,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:35,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 23:11:35,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:35,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:35,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:35,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:35,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:35,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:35,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:35,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:35,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:11:35,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:35,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:11:35,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:35,975 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-13 23:11:35,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412112489] [2020-10-13 23:11:35,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:11:35,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:11:35,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32746612] [2020-10-13 23:11:35,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:11:35,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:11:35,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:11:35,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:11:35,978 INFO L87 Difference]: Start difference. First operand 63 states and 80 transitions. Second operand 10 states. [2020-10-13 23:11:36,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:11:36,242 INFO L93 Difference]: Finished difference Result 117 states and 144 transitions. [2020-10-13 23:11:36,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 23:11:36,242 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-10-13 23:11:36,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:11:36,244 INFO L225 Difference]: With dead ends: 117 [2020-10-13 23:11:36,244 INFO L226 Difference]: Without dead ends: 90 [2020-10-13 23:11:36,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:11:36,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-13 23:11:36,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 75. [2020-10-13 23:11:36,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-13 23:11:36,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 93 transitions. [2020-10-13 23:11:36,259 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 93 transitions. Word has length 57 [2020-10-13 23:11:36,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:11:36,259 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 93 transitions. [2020-10-13 23:11:36,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:11:36,259 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 93 transitions. [2020-10-13 23:11:36,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 23:11:36,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:11:36,260 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:11:36,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 23:11:36,261 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:11:36,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:11:36,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1724329444, now seen corresponding path program 6 times [2020-10-13 23:11:36,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:11:36,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754936163] [2020-10-13 23:11:36,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:11:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:36,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:36,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:36,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:36,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:36,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:36,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:36,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:36,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:36,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:37,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:37,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:37,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:37,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:37,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:37,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:37,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:38,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:38,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:38,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:38,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:39,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:39,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:39,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:39,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:40,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:40,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:41,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:41,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 23:11:41,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 26 [2020-10-13 23:11:41,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:11:41,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:41,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:41,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:11:41,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:11:41,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 23:11:41,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:41,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:11:41,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:41,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:41,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:41,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:11:41,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:41,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:41,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:41,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:41,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:41,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:41,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:41,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:41,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 23:11:41,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:41,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:41,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:41,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:41,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:41,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:11:41,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:41,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:41,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:41,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:41,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:41,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:41,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 23:11:41,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:41,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:41,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:41,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:41,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:41,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:11:41,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:41,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:41,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:41,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:41,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:41,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:41,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 23:11:41,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:41,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:41,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:41,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:41,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:41,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:41,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:41,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:41,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:11:41,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:41,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:11:41,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:41,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 23:11:41,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:41,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:41,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:41,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:41,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:41,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:41,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:41,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:41,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:11:41,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:41,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:11:41,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:41,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 23:11:41,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:41,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:41,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:41,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:41,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:41,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:41,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:41,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:41,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:11:41,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:41,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:11:41,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:41,357 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-13 23:11:41,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754936163] [2020-10-13 23:11:41,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:11:41,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:11:41,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610103405] [2020-10-13 23:11:41,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:11:41,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:11:41,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:11:41,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:11:41,360 INFO L87 Difference]: Start difference. First operand 75 states and 93 transitions. Second operand 10 states. [2020-10-13 23:11:41,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:11:41,677 INFO L93 Difference]: Finished difference Result 85 states and 103 transitions. [2020-10-13 23:11:41,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:11:41,677 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 65 [2020-10-13 23:11:41,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:11:41,678 INFO L225 Difference]: With dead ends: 85 [2020-10-13 23:11:41,679 INFO L226 Difference]: Without dead ends: 74 [2020-10-13 23:11:41,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:11:41,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-13 23:11:41,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 54. [2020-10-13 23:11:41,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-13 23:11:41,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2020-10-13 23:11:41,696 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 65 [2020-10-13 23:11:41,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:11:41,697 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2020-10-13 23:11:41,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:11:41,697 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2020-10-13 23:11:41,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 23:11:41,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:11:41,704 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:11:41,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 23:11:41,704 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:11:41,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:11:41,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1556877992, now seen corresponding path program 7 times [2020-10-13 23:11:41,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:11:41,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437193665] [2020-10-13 23:11:41,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:11:41,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:41,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:42,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:42,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:42,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:43,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:44,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:44,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:45,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:45,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:45,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:46,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:46,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:46,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:46,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 23:11:46,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 23:11:46,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 23:11:46,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:46,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:46,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-13 23:11:46,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:11:46,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 23:11:46,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:48,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:11:48,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:48,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:48,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:48,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:11:48,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:48,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:48,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:48,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:48,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:48,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:48,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:48,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:48,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 23:11:48,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:48,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:48,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:48,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:48,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:48,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:48,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:48,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:48,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:11:48,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:48,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:11:48,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:48,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 23:11:48,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:48,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:48,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:48,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:48,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:48,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:11:48,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:48,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:48,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:11:48,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:48,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:11:48,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:48,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 23:11:48,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:48,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:48,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:48,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:48,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:48,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:11:48,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:48,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:48,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:11:48,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:48,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:11:48,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:48,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 23:11:48,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:48,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:48,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:48,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:48,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:48,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:11:48,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:48,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:48,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:11:48,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:48,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:11:48,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:48,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 23:11:48,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:48,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:48,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:48,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:11:48,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:11:48,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:11:48,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:48,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:48,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:11:48,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:11:48,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:11:48,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:11:48,713 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 23:11:48,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437193665] [2020-10-13 23:11:48,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:11:48,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-13 23:11:48,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526110892] [2020-10-13 23:11:48,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-13 23:11:48,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:11:48,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-13 23:11:48,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=788, Unknown=0, NotChecked=0, Total=870 [2020-10-13 23:11:48,716 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand 30 states. [2020-10-13 23:11:51,346 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 84 [2020-10-13 23:11:52,319 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2020-10-13 23:11:52,501 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2020-10-13 23:11:52,704 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 64 [2020-10-13 23:11:52,914 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2020-10-13 23:11:53,269 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 86 [2020-10-13 23:11:54,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:11:54,387 INFO L93 Difference]: Finished difference Result 114 states and 140 transitions. [2020-10-13 23:11:54,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-13 23:11:54,388 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 69 [2020-10-13 23:11:54,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:11:54,389 INFO L225 Difference]: With dead ends: 114 [2020-10-13 23:11:54,389 INFO L226 Difference]: Without dead ends: 109 [2020-10-13 23:11:54,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 835 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=432, Invalid=3858, Unknown=0, NotChecked=0, Total=4290 [2020-10-13 23:11:54,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-13 23:11:54,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 89. [2020-10-13 23:11:54,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-13 23:11:54,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 114 transitions. [2020-10-13 23:11:54,414 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 114 transitions. Word has length 69 [2020-10-13 23:11:54,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:11:54,416 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 114 transitions. [2020-10-13 23:11:54,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-13 23:11:54,417 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 114 transitions. [2020-10-13 23:11:54,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 23:11:54,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:11:54,418 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2020-10-13 23:11:54,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 23:11:54,418 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:11:54,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:11:54,419 INFO L82 PathProgramCache]: Analyzing trace with hash 932650970, now seen corresponding path program 3 times [2020-10-13 23:11:54,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:11:54,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330605128] [2020-10-13 23:11:54,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:11:54,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:11:54,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:54,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:55,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:55,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:55,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:56,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:56,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:57,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:57,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:58,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:58,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:58,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:11:59,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:11:59,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 23:11:59,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 23:11:59,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 23:11:59,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:11:59,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:11:59,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-13 23:11:59,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:11:59,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 23:11:59,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:12:00,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:12:00,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:00,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:00,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:00,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:12:00,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:00,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:12:00,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:00,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:00,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:00,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:00,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:00,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:00,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 23:12:00,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:00,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:00,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:00,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:00,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:00,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:12:00,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:00,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:00,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:00,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:00,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:00,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:00,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 23:12:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:00,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:00,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:00,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:00,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:00,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:12:00,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:00,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:00,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:12:00,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:00,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:12:00,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:00,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 23:12:00,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:00,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:00,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:00,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:00,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:00,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:12:00,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:00,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:00,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:12:00,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:00,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:12:00,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:00,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 23:12:00,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:00,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:00,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:00,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:00,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:00,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:12:00,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:00,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:00,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:12:00,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:00,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:12:00,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:00,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 23:12:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:00,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:00,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:00,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:00,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:00,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:12:00,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:00,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:00,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:12:00,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:00,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:12:00,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:00,918 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 23:12:00,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330605128] [2020-10-13 23:12:00,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:12:00,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-13 23:12:00,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892040226] [2020-10-13 23:12:00,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-13 23:12:00,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:12:00,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-13 23:12:00,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=729, Unknown=0, NotChecked=0, Total=812 [2020-10-13 23:12:00,920 INFO L87 Difference]: Start difference. First operand 89 states and 114 transitions. Second operand 29 states. [2020-10-13 23:12:04,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:12:04,958 INFO L93 Difference]: Finished difference Result 141 states and 181 transitions. [2020-10-13 23:12:04,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-13 23:12:04,959 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 69 [2020-10-13 23:12:04,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:12:04,961 INFO L225 Difference]: With dead ends: 141 [2020-10-13 23:12:04,961 INFO L226 Difference]: Without dead ends: 136 [2020-10-13 23:12:04,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 897 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=470, Invalid=3820, Unknown=0, NotChecked=0, Total=4290 [2020-10-13 23:12:04,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-13 23:12:04,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 107. [2020-10-13 23:12:04,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-13 23:12:04,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 140 transitions. [2020-10-13 23:12:04,993 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 140 transitions. Word has length 69 [2020-10-13 23:12:04,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:12:04,993 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 140 transitions. [2020-10-13 23:12:04,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-13 23:12:04,993 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 140 transitions. [2020-10-13 23:12:04,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 23:12:04,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:12:04,994 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2020-10-13 23:12:04,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 23:12:04,995 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:12:04,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:12:04,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1629264550, now seen corresponding path program 4 times [2020-10-13 23:12:04,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:12:04,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245658106] [2020-10-13 23:12:04,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:12:05,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:05,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:05,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:05,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:06,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:06,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:07,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:07,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:08,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:08,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:08,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:09,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:09,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:09,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:10,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:10,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 23:12:10,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 23:12:10,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 23:12:10,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:10,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:10,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-13 23:12:10,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:12:10,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 23:12:10,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:11,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:12:11,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:11,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:11,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:11,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:12:11,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:11,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:12:11,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:11,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:11,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:11,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:11,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:11,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:12:11,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 23:12:11,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:11,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:11,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:11,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:11,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:11,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:12:11,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:11,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:11,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:11,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:11,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:11,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:12:11,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 23:12:11,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:11,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:11,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:11,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:11,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:11,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:12:11,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:11,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:11,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:12:11,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:11,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:12:11,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:12:11,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 23:12:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:11,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:11,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:11,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:11,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:11,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:12:11,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:11,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:11,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:12:11,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:11,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:12:11,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:11,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 23:12:11,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:11,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:11,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:11,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:11,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:11,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:12:11,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:11,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:11,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:12:11,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:11,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:12:11,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:12:11,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 23:12:11,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:11,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:11,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:11,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:11,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:11,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 23:12:11,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:11,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:11,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:12:11,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:11,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:12:11,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:12:12,040 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 23:12:12,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245658106] [2020-10-13 23:12:12,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:12:12,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-13 23:12:12,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843712501] [2020-10-13 23:12:12,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-13 23:12:12,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:12:12,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-13 23:12:12,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=721, Unknown=0, NotChecked=0, Total=812 [2020-10-13 23:12:12,049 INFO L87 Difference]: Start difference. First operand 107 states and 140 transitions. Second operand 29 states. [2020-10-13 23:12:14,105 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2020-10-13 23:12:15,196 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2020-10-13 23:12:15,934 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-10-13 23:12:17,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:12:17,451 INFO L93 Difference]: Finished difference Result 148 states and 184 transitions. [2020-10-13 23:12:17,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-13 23:12:17,452 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 69 [2020-10-13 23:12:17,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:12:17,453 INFO L225 Difference]: With dead ends: 148 [2020-10-13 23:12:17,453 INFO L226 Difference]: Without dead ends: 143 [2020-10-13 23:12:17,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1053 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=598, Invalid=4372, Unknown=0, NotChecked=0, Total=4970 [2020-10-13 23:12:17,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-13 23:12:17,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 107. [2020-10-13 23:12:17,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-13 23:12:17,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 140 transitions. [2020-10-13 23:12:17,477 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 140 transitions. Word has length 69 [2020-10-13 23:12:17,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:12:17,478 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 140 transitions. [2020-10-13 23:12:17,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-13 23:12:17,478 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 140 transitions. [2020-10-13 23:12:17,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 23:12:17,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:12:17,479 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2020-10-13 23:12:17,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 23:12:17,479 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:12:17,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:12:17,480 INFO L82 PathProgramCache]: Analyzing trace with hash 860264412, now seen corresponding path program 5 times [2020-10-13 23:12:17,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:12:17,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633030902] [2020-10-13 23:12:17,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:12:17,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:17,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:17,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:17,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:18,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:18,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:19,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:20,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:20,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:21,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:21,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:21,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:21,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:22,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:22,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 23:12:22,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 23:12:22,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 23:12:22,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:22,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:22,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-13 23:12:22,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:12:22,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 23:12:22,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:24,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:12:24,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:24,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:24,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:24,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:12:24,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:24,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:12:24,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:24,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:24,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:24,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:24,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:24,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:12:24,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 23:12:24,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:24,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:24,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:24,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:24,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:24,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:12:24,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:24,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:24,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:24,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:24,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:24,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:12:24,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 23:12:24,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:24,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:24,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:24,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:24,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:24,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:12:24,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:24,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:24,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:12:24,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:24,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:12:24,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:12:24,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 23:12:24,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:24,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:24,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:24,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:24,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:24,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:12:24,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:24,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:24,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:12:24,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:24,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:12:24,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 23:12:24,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 23:12:24,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:24,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:24,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:24,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:24,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:24,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:12:24,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:24,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:24,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:12:24,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:24,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:12:24,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:12:24,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 23:12:24,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:24,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:24,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:24,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:24,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:24,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 23:12:24,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:24,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:24,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:12:24,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:24,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:12:24,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:12:24,270 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 23:12:24,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633030902] [2020-10-13 23:12:24,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:12:24,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-13 23:12:24,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799610434] [2020-10-13 23:12:24,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-13 23:12:24,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:12:24,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-13 23:12:24,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=729, Unknown=0, NotChecked=0, Total=812 [2020-10-13 23:12:24,278 INFO L87 Difference]: Start difference. First operand 107 states and 140 transitions. Second operand 29 states. [2020-10-13 23:12:27,487 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-13 23:12:28,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:12:28,601 INFO L93 Difference]: Finished difference Result 140 states and 178 transitions. [2020-10-13 23:12:28,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-13 23:12:28,602 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 69 [2020-10-13 23:12:28,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:12:28,603 INFO L225 Difference]: With dead ends: 140 [2020-10-13 23:12:28,604 INFO L226 Difference]: Without dead ends: 135 [2020-10-13 23:12:28,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=475, Invalid=3815, Unknown=0, NotChecked=0, Total=4290 [2020-10-13 23:12:28,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-13 23:12:28,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 107. [2020-10-13 23:12:28,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-13 23:12:28,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 140 transitions. [2020-10-13 23:12:28,625 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 140 transitions. Word has length 69 [2020-10-13 23:12:28,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:12:28,625 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 140 transitions. [2020-10-13 23:12:28,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-13 23:12:28,626 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 140 transitions. [2020-10-13 23:12:28,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 23:12:28,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:12:28,627 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2020-10-13 23:12:28,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 23:12:28,628 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:12:28,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:12:28,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1840696026, now seen corresponding path program 6 times [2020-10-13 23:12:28,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:12:28,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [461723727] [2020-10-13 23:12:28,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:12:28,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:28,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:28,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:29,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:29,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:29,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:30,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:30,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:30,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:31,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:31,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:31,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:32,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:32,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:32,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:32,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:33,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:33,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:33,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:33,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:33,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 23:12:33,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 23:12:33,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:12:33,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:33,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:33,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-13 23:12:33,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:12:33,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 23:12:33,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:34,838 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 44 [2020-10-13 23:12:35,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:12:35,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:35,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:35,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:35,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:12:35,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:35,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:12:35,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:35,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:35,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:35,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:35,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:35,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:35,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 23:12:35,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:35,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:35,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:35,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:35,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:35,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:12:35,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:35,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:35,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:35,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:35,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:35,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:35,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 23:12:35,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:35,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:35,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:35,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:35,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:35,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:12:35,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:35,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:35,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:12:35,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:35,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:12:35,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:35,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 23:12:35,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:35,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:35,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:35,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:35,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:35,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:12:35,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:35,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:35,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:12:35,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:35,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:12:35,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:35,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 23:12:35,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:35,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:35,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:35,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:35,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:35,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:12:35,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:35,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:35,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:12:35,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:35,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:12:35,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:35,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 23:12:35,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:35,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:35,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:35,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:35,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:35,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:12:35,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:35,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:35,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:12:35,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:35,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:12:35,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:35,768 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 23:12:35,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [461723727] [2020-10-13 23:12:35,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:12:35,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-13 23:12:35,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939726530] [2020-10-13 23:12:35,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-13 23:12:35,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:12:35,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-13 23:12:35,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=771, Unknown=0, NotChecked=0, Total=870 [2020-10-13 23:12:35,771 INFO L87 Difference]: Start difference. First operand 107 states and 140 transitions. Second operand 30 states. [2020-10-13 23:12:37,521 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2020-10-13 23:12:37,815 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 79 [2020-10-13 23:12:38,005 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2020-10-13 23:12:38,292 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-10-13 23:12:38,527 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2020-10-13 23:12:38,724 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2020-10-13 23:12:39,036 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 79 [2020-10-13 23:12:39,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:12:39,521 INFO L93 Difference]: Finished difference Result 171 states and 220 transitions. [2020-10-13 23:12:39,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-13 23:12:39,522 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 69 [2020-10-13 23:12:39,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:12:39,524 INFO L225 Difference]: With dead ends: 171 [2020-10-13 23:12:39,524 INFO L226 Difference]: Without dead ends: 166 [2020-10-13 23:12:39,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 726 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=418, Invalid=2888, Unknown=0, NotChecked=0, Total=3306 [2020-10-13 23:12:39,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-13 23:12:39,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 115. [2020-10-13 23:12:39,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-13 23:12:39,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 152 transitions. [2020-10-13 23:12:39,548 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 152 transitions. Word has length 69 [2020-10-13 23:12:39,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:12:39,549 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 152 transitions. [2020-10-13 23:12:39,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-13 23:12:39,549 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 152 transitions. [2020-10-13 23:12:39,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 23:12:39,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:12:39,550 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2020-10-13 23:12:39,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 23:12:39,551 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:12:39,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:12:39,551 INFO L82 PathProgramCache]: Analyzing trace with hash 35257692, now seen corresponding path program 7 times [2020-10-13 23:12:39,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:12:39,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994104622] [2020-10-13 23:12:39,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:12:39,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:39,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:39,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:40,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:40,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:40,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:41,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:41,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:41,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:42,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:42,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:42,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:42,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:43,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:43,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:43,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:43,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:44,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:44,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:44,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:44,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 23:12:44,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 23:12:44,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 23:12:44,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:44,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:44,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-13 23:12:44,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:12:44,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 23:12:44,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:45,493 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 43 [2020-10-13 23:12:45,717 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2020-10-13 23:12:45,982 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 48 [2020-10-13 23:12:46,293 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2020-10-13 23:12:46,591 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 58 [2020-10-13 23:12:46,946 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 58 [2020-10-13 23:12:47,417 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 78 [2020-10-13 23:12:47,736 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 64 [2020-10-13 23:12:47,922 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 51 [2020-10-13 23:12:48,100 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2020-10-13 23:12:48,418 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2020-10-13 23:12:48,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:12:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:48,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:48,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:48,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:12:48,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:48,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:12:48,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:48,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:48,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:48,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:48,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:48,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:48,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 23:12:48,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:48,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:48,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:48,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:48,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:48,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:12:48,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:48,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:48,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:12:48,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:48,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:12:48,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:12:48,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 23:12:48,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:48,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:48,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:48,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:48,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:48,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:12:48,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:48,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:48,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:12:48,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:48,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:12:48,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:12:48,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 23:12:48,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:48,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:48,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:48,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:48,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:48,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:12:48,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:48,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:48,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:12:48,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:48,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:12:48,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:12:48,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 23:12:48,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:48,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:48,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:48,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:48,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:48,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:12:48,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:48,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:48,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:12:48,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:48,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:12:48,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:12:48,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 23:12:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:48,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:48,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:12:48,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:12:48,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:12:48,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 23:12:48,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:12:48,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:12:48,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:12:48,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:12:48,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:12:48,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:12:48,938 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 23:12:48,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994104622] [2020-10-13 23:12:48,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:12:48,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-13 23:12:48,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409507657] [2020-10-13 23:12:48,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-13 23:12:48,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:12:48,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-13 23:12:48,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2020-10-13 23:12:48,943 INFO L87 Difference]: Start difference. First operand 115 states and 152 transitions. Second operand 31 states. [2020-10-13 23:12:50,437 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2020-10-13 23:12:50,724 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2020-10-13 23:12:51,086 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 75 [2020-10-13 23:12:51,381 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2020-10-13 23:12:51,677 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-13 23:12:51,919 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-10-13 23:12:52,294 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 86 [2020-10-13 23:12:52,850 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 102 [2020-10-13 23:12:53,632 WARN L193 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 98 [2020-10-13 23:12:54,078 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 98 [2020-10-13 23:12:54,564 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 108 [2020-10-13 23:12:55,034 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 102 [2020-10-13 23:12:56,186 WARN L193 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 175 DAG size of output: 136 [2020-10-13 23:12:56,628 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 97 [2020-10-13 23:12:57,276 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 102 [2020-10-13 23:12:57,740 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 91 [2020-10-13 23:12:58,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:12:58,408 INFO L93 Difference]: Finished difference Result 171 states and 219 transitions. [2020-10-13 23:12:58,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-13 23:12:58,409 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 69 [2020-10-13 23:12:58,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:12:58,411 INFO L225 Difference]: With dead ends: 171 [2020-10-13 23:12:58,411 INFO L226 Difference]: Without dead ends: 166 [2020-10-13 23:12:58,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1090 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=523, Invalid=3137, Unknown=0, NotChecked=0, Total=3660 [2020-10-13 23:12:58,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-13 23:12:58,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 117. [2020-10-13 23:12:58,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-13 23:12:58,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 155 transitions. [2020-10-13 23:12:58,441 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 155 transitions. Word has length 69 [2020-10-13 23:12:58,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:12:58,441 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 155 transitions. [2020-10-13 23:12:58,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-13 23:12:58,441 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 155 transitions. [2020-10-13 23:12:58,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 23:12:58,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:12:58,443 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2020-10-13 23:12:58,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 23:12:58,443 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:12:58,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:12:58,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1768309468, now seen corresponding path program 8 times [2020-10-13 23:12:58,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:12:58,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121057297] [2020-10-13 23:12:58,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:12:58,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:12:58,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:58,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:59,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:59,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:59,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:12:59,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:00,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:00,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:00,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:01,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:01,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:01,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:02,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:02,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:02,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:02,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:02,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:02,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:03,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:03,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:03,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:03,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 23:13:03,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-13 23:13:03,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 23:13:03,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:03,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:03,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-13 23:13:03,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:13:03,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 23:13:03,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:04,670 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 45 [2020-10-13 23:13:04,820 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 37 [2020-10-13 23:13:05,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:13:05,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:05,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:05,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:05,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:13:05,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:05,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:05,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:05,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:05,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:05,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:13:05,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:05,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:05,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 23:13:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:05,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:05,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:05,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:05,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:05,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:13:05,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:05,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:05,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:05,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:13:05,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:05,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:05,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 23:13:05,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:05,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:05,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:05,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:05,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:05,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:05,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:05,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:05,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:13:05,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:13:05,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:13:05,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:06,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 23:13:06,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:06,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:06,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:06,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:06,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:06,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:06,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:06,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:06,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:13:06,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:13:06,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:13:06,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:06,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 23:13:06,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:06,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:06,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:06,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:06,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:06,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:13:06,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:06,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:06,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:13:06,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:13:06,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:13:06,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:06,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 23:13:06,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:06,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:06,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:06,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:06,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:06,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:13:06,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:06,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:06,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:13:06,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:13:06,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:13:06,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:06,039 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 1 proven. 38 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 23:13:06,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121057297] [2020-10-13 23:13:06,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:13:06,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-13 23:13:06,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041661014] [2020-10-13 23:13:06,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-13 23:13:06,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:13:06,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-13 23:13:06,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=900, Unknown=0, NotChecked=0, Total=992 [2020-10-13 23:13:06,041 INFO L87 Difference]: Start difference. First operand 117 states and 155 transitions. Second operand 32 states. [2020-10-13 23:13:07,045 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-10-13 23:13:07,566 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-10-13 23:13:07,749 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2020-10-13 23:13:07,930 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-10-13 23:13:09,153 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 88 [2020-10-13 23:13:09,551 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-10-13 23:13:10,016 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 46 [2020-10-13 23:13:10,492 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2020-10-13 23:13:11,043 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2020-10-13 23:13:11,350 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 73 [2020-10-13 23:13:11,912 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 101 [2020-10-13 23:13:12,135 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 44 [2020-10-13 23:13:12,574 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 91 [2020-10-13 23:13:12,773 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-13 23:13:13,228 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-10-13 23:13:13,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:13:13,933 INFO L93 Difference]: Finished difference Result 169 states and 212 transitions. [2020-10-13 23:13:13,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-13 23:13:13,934 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 69 [2020-10-13 23:13:13,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:13:13,936 INFO L225 Difference]: With dead ends: 169 [2020-10-13 23:13:13,936 INFO L226 Difference]: Without dead ends: 164 [2020-10-13 23:13:13,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1051 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=531, Invalid=4299, Unknown=0, NotChecked=0, Total=4830 [2020-10-13 23:13:13,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-13 23:13:13,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 103. [2020-10-13 23:13:13,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-13 23:13:13,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 132 transitions. [2020-10-13 23:13:13,965 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 132 transitions. Word has length 69 [2020-10-13 23:13:13,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:13:13,965 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 132 transitions. [2020-10-13 23:13:13,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-13 23:13:13,966 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 132 transitions. [2020-10-13 23:13:13,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 23:13:13,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:13:13,967 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:13:13,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 23:13:13,967 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:13:13,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:13:13,967 INFO L82 PathProgramCache]: Analyzing trace with hash -37128866, now seen corresponding path program 3 times [2020-10-13 23:13:13,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:13:13,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872765132] [2020-10-13 23:13:13,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:13:13,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:13,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:14,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:14,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:14,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:15,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:15,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:15,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:16,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:16,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:16,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:16,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:17,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:17,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:17,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:17,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:17,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:18,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:18,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:18,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:18,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:18,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:18,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:18,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:18,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:18,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-13 23:13:18,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-10-13 23:13:18,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:13:18,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:18,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:18,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-13 23:13:18,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:13:18,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-13 23:13:18,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:19,914 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 46 [2020-10-13 23:13:20,064 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2020-10-13 23:13:20,386 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 39 [2020-10-13 23:13:21,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:13:21,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:21,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:21,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:21,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:13:21,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:21,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:21,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:21,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:21,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:21,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:13:21,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:21,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:21,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 23:13:21,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:21,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:21,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:21,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:21,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:21,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:13:21,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:21,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:21,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:21,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:13:21,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:21,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:21,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 23:13:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:21,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:21,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:21,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:21,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:21,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:13:21,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:21,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:21,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:13:21,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:13:21,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:13:21,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:21,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 23:13:21,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:21,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:21,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:21,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:21,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:21,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:13:21,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:21,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:21,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:13:21,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:13:21,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:13:21,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:13:21,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 23:13:21,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:21,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:21,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:21,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:21,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:21,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:13:21,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:21,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:21,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:13:21,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:13:21,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:13:21,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:21,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 23:13:21,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:21,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:21,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:21,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:21,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:21,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:13:21,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:21,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:21,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:13:21,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:13:21,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:13:21,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:21,470 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 23:13:21,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872765132] [2020-10-13 23:13:21,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:13:21,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-13 23:13:21,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548993589] [2020-10-13 23:13:21,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-13 23:13:21,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:13:21,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-13 23:13:21,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=773, Unknown=0, NotChecked=0, Total=870 [2020-10-13 23:13:21,472 INFO L87 Difference]: Start difference. First operand 103 states and 132 transitions. Second operand 30 states. [2020-10-13 23:13:23,424 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2020-10-13 23:13:23,898 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 103 [2020-10-13 23:13:24,285 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 86 [2020-10-13 23:13:24,947 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 73 [2020-10-13 23:13:25,352 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 78 [2020-10-13 23:13:25,632 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2020-10-13 23:13:26,205 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 102 [2020-10-13 23:13:26,759 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-10-13 23:13:28,312 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-10-13 23:13:28,833 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 93 [2020-10-13 23:13:29,112 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2020-10-13 23:13:29,785 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-13 23:13:29,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:13:29,860 INFO L93 Difference]: Finished difference Result 187 states and 245 transitions. [2020-10-13 23:13:29,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-13 23:13:29,862 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 69 [2020-10-13 23:13:29,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:13:29,865 INFO L225 Difference]: With dead ends: 187 [2020-10-13 23:13:29,865 INFO L226 Difference]: Without dead ends: 182 [2020-10-13 23:13:29,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1074 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=561, Invalid=4269, Unknown=0, NotChecked=0, Total=4830 [2020-10-13 23:13:29,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-13 23:13:29,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 77. [2020-10-13 23:13:29,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-13 23:13:29,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 98 transitions. [2020-10-13 23:13:29,885 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 98 transitions. Word has length 69 [2020-10-13 23:13:29,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:13:29,885 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 98 transitions. [2020-10-13 23:13:29,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-13 23:13:29,885 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 98 transitions. [2020-10-13 23:13:29,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-13 23:13:29,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:13:29,886 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:13:29,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 23:13:29,886 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:13:29,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:13:29,887 INFO L82 PathProgramCache]: Analyzing trace with hash -547364970, now seen corresponding path program 8 times [2020-10-13 23:13:29,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:13:29,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983644180] [2020-10-13 23:13:29,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:13:29,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:29,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:29,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:30,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:31,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:31,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:32,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:32,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:33,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:33,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:33,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:34,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:34,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:34,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:34,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:34,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 23:13:34,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 23:13:34,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-13 23:13:34,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:34,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:34,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:13:34,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:13:34,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 23:13:34,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:35,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:13:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:35,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:35,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:35,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:13:35,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:35,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:35,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:35,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:35,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:35,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:13:35,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:35,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:35,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 23:13:35,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:35,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:35,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:35,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:35,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:35,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:13:35,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:35,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:35,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:35,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:13:35,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:35,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:35,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 23:13:35,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:35,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:35,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:35,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:35,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:35,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:13:35,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:35,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:35,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:35,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:13:35,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:35,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:35,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 23:13:35,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:35,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:35,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:35,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:35,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:35,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:13:35,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:35,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:35,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:13:35,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:13:35,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:13:35,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:35,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 23:13:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:35,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:35,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:35,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:35,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:35,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:35,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:35,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:35,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:13:35,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:13:35,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:13:35,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:35,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 23:13:35,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:35,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:35,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:35,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:35,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:35,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:35,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:35,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:35,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:13:35,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:13:35,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:13:35,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:35,083 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 16 proven. 21 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-13 23:13:35,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983644180] [2020-10-13 23:13:35,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:13:35,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:13:35,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001311699] [2020-10-13 23:13:35,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:13:35,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:13:35,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:13:35,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:13:35,084 INFO L87 Difference]: Start difference. First operand 77 states and 98 transitions. Second operand 12 states. [2020-10-13 23:13:35,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:13:35,571 INFO L93 Difference]: Finished difference Result 141 states and 172 transitions. [2020-10-13 23:13:35,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:13:35,575 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 71 [2020-10-13 23:13:35,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:13:35,576 INFO L225 Difference]: With dead ends: 141 [2020-10-13 23:13:35,576 INFO L226 Difference]: Without dead ends: 108 [2020-10-13 23:13:35,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:13:35,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-13 23:13:35,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 91. [2020-10-13 23:13:35,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-13 23:13:35,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 113 transitions. [2020-10-13 23:13:35,598 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 113 transitions. Word has length 71 [2020-10-13 23:13:35,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:13:35,598 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 113 transitions. [2020-10-13 23:13:35,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:13:35,599 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 113 transitions. [2020-10-13 23:13:35,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-13 23:13:35,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:13:35,600 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 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] [2020-10-13 23:13:35,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 23:13:35,600 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:13:35,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:13:35,601 INFO L82 PathProgramCache]: Analyzing trace with hash 30346146, now seen corresponding path program 9 times [2020-10-13 23:13:35,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:13:35,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [823515213] [2020-10-13 23:13:35,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:13:35,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:35,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:36,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:36,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:37,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:37,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:38,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:39,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:39,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:40,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:40,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:40,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:40,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 23:13:40,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 23:13:40,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-13 23:13:40,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:40,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:40,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-13 23:13:40,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:13:40,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 23:13:40,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:41,858 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 46 [2020-10-13 23:13:42,185 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 49 [2020-10-13 23:13:42,353 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 42 [2020-10-13 23:13:42,536 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2020-10-13 23:13:44,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:13:44,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:44,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:44,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:44,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:13:44,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:44,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:44,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:44,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:44,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:44,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:13:44,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:44,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:44,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 23:13:44,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:44,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:44,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:44,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:44,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:44,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:44,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:44,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:44,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:13:44,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:13:44,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:13:44,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:13:44,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 23:13:44,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:44,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:44,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:44,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:44,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:44,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:44,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:44,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:44,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:13:44,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:13:44,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:13:44,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:44,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 23:13:44,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:44,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:44,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:44,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:44,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:44,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:44,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:44,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:44,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:13:44,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:13:44,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:13:44,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:44,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 23:13:44,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:44,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:44,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:44,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:44,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:44,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:13:44,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:44,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:44,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:13:44,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:13:44,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:13:44,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:44,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 23:13:44,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:44,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:44,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:44,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:44,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:44,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:13:44,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:44,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:44,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:13:44,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:13:44,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:13:44,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:44,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 23:13:44,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:44,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:44,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:44,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:13:44,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:13:44,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:13:44,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:44,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:44,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:13:44,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:13:44,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:13:44,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:44,272 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-13 23:13:44,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [823515213] [2020-10-13 23:13:44,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:13:44,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-13 23:13:44,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423851946] [2020-10-13 23:13:44,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-13 23:13:44,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:13:44,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-13 23:13:44,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1101, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 23:13:44,274 INFO L87 Difference]: Start difference. First operand 91 states and 113 transitions. Second operand 35 states. [2020-10-13 23:13:47,938 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2020-10-13 23:13:48,447 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2020-10-13 23:13:48,946 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 66 [2020-10-13 23:13:49,171 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2020-10-13 23:13:49,456 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2020-10-13 23:13:49,870 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2020-10-13 23:13:51,929 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 81 [2020-10-13 23:13:52,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:13:52,179 INFO L93 Difference]: Finished difference Result 179 states and 221 transitions. [2020-10-13 23:13:52,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-13 23:13:52,181 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 83 [2020-10-13 23:13:52,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:13:52,185 INFO L225 Difference]: With dead ends: 179 [2020-10-13 23:13:52,185 INFO L226 Difference]: Without dead ends: 174 [2020-10-13 23:13:52,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1034 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=463, Invalid=4649, Unknown=0, NotChecked=0, Total=5112 [2020-10-13 23:13:52,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-13 23:13:52,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 148. [2020-10-13 23:13:52,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-13 23:13:52,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 188 transitions. [2020-10-13 23:13:52,230 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 188 transitions. Word has length 83 [2020-10-13 23:13:52,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:13:52,230 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 188 transitions. [2020-10-13 23:13:52,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-13 23:13:52,230 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 188 transitions. [2020-10-13 23:13:52,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-13 23:13:52,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:13:52,232 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:13:52,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 23:13:52,232 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:13:52,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:13:52,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1953574180, now seen corresponding path program 9 times [2020-10-13 23:13:52,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:13:52,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807736744] [2020-10-13 23:13:52,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:13:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:13:52,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:52,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:53,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:53,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:54,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:55,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:55,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:55,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:56,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:56,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:13:57,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:13:57,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 23:13:57,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 23:13:57,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 23:13:57,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:13:57,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:13:57,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-13 23:13:57,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:13:57,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 23:13:57,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:13:58,640 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 45 [2020-10-13 23:13:58,818 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 48 [2020-10-13 23:13:59,030 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2020-10-13 23:13:59,225 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 40 [2020-10-13 23:13:59,427 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2020-10-13 23:13:59,636 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2020-10-13 23:14:00,282 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-10-13 23:14:00,466 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 29 [2020-10-13 23:14:00,652 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 34 [2020-10-13 23:14:00,844 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2020-10-13 23:14:01,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:14:01,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:01,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:01,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:01,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:14:01,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:01,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:14:01,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:01,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:01,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:01,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:01,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:01,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:01,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 23:14:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:01,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:01,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:01,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:01,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:01,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:14:01,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:01,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:01,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:01,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:01,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:01,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:01,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 23:14:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:01,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:01,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:01,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:01,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:01,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:14:01,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:01,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:01,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:14:01,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:01,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:14:01,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:01,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 23:14:01,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:01,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:01,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:01,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:01,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:01,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:14:01,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:01,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:01,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:14:01,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:01,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:14:01,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:01,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 23:14:01,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:01,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:01,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:01,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:01,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:01,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:14:01,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:01,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:01,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:14:01,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:01,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:14:01,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:01,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 23:14:01,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:01,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:01,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:01,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:01,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:01,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:14:01,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:01,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:01,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:14:01,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:01,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:14:01,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:01,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 23:14:01,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:01,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:01,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:01,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:01,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:01,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:14:01,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:01,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:01,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:14:01,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:01,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:14:01,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:01,634 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 6 proven. 66 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-13 23:14:01,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807736744] [2020-10-13 23:14:01,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:14:01,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-13 23:14:01,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664754576] [2020-10-13 23:14:01,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-13 23:14:01,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:14:01,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-13 23:14:01,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1105, Unknown=0, NotChecked=0, Total=1260 [2020-10-13 23:14:01,636 INFO L87 Difference]: Start difference. First operand 148 states and 188 transitions. Second operand 36 states. [2020-10-13 23:14:02,291 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2020-10-13 23:14:03,301 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-10-13 23:14:04,299 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 104 [2020-10-13 23:14:04,527 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 59 [2020-10-13 23:14:04,845 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 65 [2020-10-13 23:14:05,157 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-10-13 23:14:05,535 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 80 [2020-10-13 23:14:05,854 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 84 [2020-10-13 23:14:06,303 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 90 [2020-10-13 23:14:06,587 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 80 [2020-10-13 23:14:06,879 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 79 [2020-10-13 23:14:07,070 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2020-10-13 23:14:07,580 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 108 [2020-10-13 23:14:07,855 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-10-13 23:14:08,157 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 71 [2020-10-13 23:14:08,606 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 76 [2020-10-13 23:14:08,984 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 93 [2020-10-13 23:14:09,410 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2020-10-13 23:14:10,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:14:10,116 INFO L93 Difference]: Finished difference Result 211 states and 266 transitions. [2020-10-13 23:14:10,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-13 23:14:10,118 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 83 [2020-10-13 23:14:10,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:14:10,119 INFO L225 Difference]: With dead ends: 211 [2020-10-13 23:14:10,120 INFO L226 Difference]: Without dead ends: 196 [2020-10-13 23:14:10,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1168 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=592, Invalid=3698, Unknown=0, NotChecked=0, Total=4290 [2020-10-13 23:14:10,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-13 23:14:10,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 153. [2020-10-13 23:14:10,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-13 23:14:10,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 194 transitions. [2020-10-13 23:14:10,167 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 194 transitions. Word has length 83 [2020-10-13 23:14:10,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:14:10,168 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 194 transitions. [2020-10-13 23:14:10,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-13 23:14:10,168 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 194 transitions. [2020-10-13 23:14:10,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-13 23:14:10,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:14:10,169 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:14:10,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 23:14:10,170 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:14:10,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:14:10,170 INFO L82 PathProgramCache]: Analyzing trace with hash 689877668, now seen corresponding path program 10 times [2020-10-13 23:14:10,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:14:10,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653037800] [2020-10-13 23:14:10,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:14:10,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:10,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:10,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:11,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:11,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:12,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:13,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:13,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:13,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:14,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:14,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:15,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:15,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 23:14:15,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 23:14:15,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 23:14:15,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:15,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:15,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-13 23:14:15,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:14:15,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 23:14:15,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:16,148 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-10-13 23:14:16,326 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-10-13 23:14:16,538 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-10-13 23:14:16,828 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2020-10-13 23:14:17,004 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2020-10-13 23:14:17,191 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-10-13 23:14:17,392 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2020-10-13 23:14:17,600 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2020-10-13 23:14:19,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:14:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:19,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:19,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:19,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:14:19,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:19,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:14:19,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:19,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:19,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:19,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:19,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:19,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:19,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 23:14:19,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:19,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:19,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:19,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:19,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:19,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:14:19,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:19,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:19,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:19,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:19,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:19,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:19,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 23:14:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:19,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:19,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:19,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:19,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:19,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:14:19,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:19,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:19,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:14:19,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:19,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:14:19,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:19,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 23:14:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:19,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:19,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:19,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:19,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:19,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:14:19,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:19,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:19,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:14:19,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:19,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:14:19,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:19,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 23:14:19,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:19,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:19,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:19,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:19,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:19,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:14:19,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:19,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:19,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:14:19,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:19,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:14:19,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:19,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 23:14:19,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:19,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:19,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:19,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:19,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:19,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:14:19,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:19,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:19,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:14:19,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:19,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:14:19,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:19,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 23:14:19,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:19,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:19,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:19,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:14:19,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:19,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:14:19,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:19,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:19,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:14:19,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:19,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:14:19,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:14:19,414 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-13 23:14:19,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653037800] [2020-10-13 23:14:19,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:14:19,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-13 23:14:19,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048583465] [2020-10-13 23:14:19,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-13 23:14:19,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:14:19,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-13 23:14:19,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1142, Unknown=0, NotChecked=0, Total=1260 [2020-10-13 23:14:19,416 INFO L87 Difference]: Start difference. First operand 153 states and 194 transitions. Second operand 36 states. [2020-10-13 23:14:20,082 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-10-13 23:14:20,793 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 39 [2020-10-13 23:14:21,233 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2020-10-13 23:14:21,938 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2020-10-13 23:14:22,376 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2020-10-13 23:14:22,708 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2020-10-13 23:14:24,287 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66