/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 11:27:08,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 11:27:08,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 11:27:09,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 11:27:09,024 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 11:27:09,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 11:27:09,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 11:27:09,039 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 11:27:09,042 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 11:27:09,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 11:27:09,046 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 11:27:09,047 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 11:27:09,047 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 11:27:09,050 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 11:27:09,053 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 11:27:09,055 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 11:27:09,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 11:27:09,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 11:27:09,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 11:27:09,068 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 11:27:09,070 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 11:27:09,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 11:27:09,072 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 11:27:09,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 11:27:09,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 11:27:09,092 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 11:27:09,092 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 11:27:09,093 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 11:27:09,094 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 11:27:09,095 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 11:27:09,095 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 11:27:09,096 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 11:27:09,096 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 11:27:09,102 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 11:27:09,103 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 11:27:09,104 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 11:27:09,104 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 11:27:09,105 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 11:27:09,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 11:27:09,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 11:27:09,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 11:27:09,108 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 11:27:09,150 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 11:27:09,151 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 11:27:09,154 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 11:27:09,154 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 11:27:09,154 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 11:27:09,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 11:27:09,155 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 11:27:09,155 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 11:27:09,155 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 11:27:09,155 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 11:27:09,156 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 11:27:09,157 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 11:27:09,157 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 11:27:09,157 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 11:27:09,157 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 11:27:09,158 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 11:27:09,158 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 11:27:09,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 11:27:09,158 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 11:27:09,158 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 11:27:09,159 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 11:27:09,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:27:09,159 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 11:27:09,159 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 11:27:09,160 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 11:27:09,160 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 11:27:09,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 11:27:09,160 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 11:27:09,160 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 11:27:09,161 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 11:27:09,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 11:27:09,524 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 11:27:09,528 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 11:27:09,529 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 11:27:09,530 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 11:27:09,530 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label53.c [2020-10-12 11:27:09,592 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2dad4dc8d/b6ebc2f0fffd40fcbd743166ce656274/FLAG14bb78269 [2020-10-12 11:27:10,200 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 11:27:10,200 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label53.c [2020-10-12 11:27:10,223 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2dad4dc8d/b6ebc2f0fffd40fcbd743166ce656274/FLAG14bb78269 [2020-10-12 11:27:10,439 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2dad4dc8d/b6ebc2f0fffd40fcbd743166ce656274 [2020-10-12 11:27:10,448 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 11:27:10,450 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 11:27:10,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 11:27:10,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 11:27:10,456 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 11:27:10,457 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:27:10" (1/1) ... [2020-10-12 11:27:10,460 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@794240ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:27:10, skipping insertion in model container [2020-10-12 11:27:10,460 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:27:10" (1/1) ... [2020-10-12 11:27:10,469 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 11:27:10,541 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 11:27:11,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:27:11,473 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 11:27:11,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:27:11,823 INFO L208 MainTranslator]: Completed translation [2020-10-12 11:27:11,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:27:11 WrapperNode [2020-10-12 11:27:11,824 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 11:27:11,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 11:27:11,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 11:27:11,825 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 11:27:11,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:27:11" (1/1) ... [2020-10-12 11:27:11,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:27:11" (1/1) ... [2020-10-12 11:27:11,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:27:11" (1/1) ... [2020-10-12 11:27:11,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:27:11" (1/1) ... [2020-10-12 11:27:11,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:27:11" (1/1) ... [2020-10-12 11:27:11,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:27:11" (1/1) ... [2020-10-12 11:27:12,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:27:11" (1/1) ... [2020-10-12 11:27:12,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 11:27:12,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 11:27:12,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 11:27:12,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 11:27:12,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:27:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:27:12,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 11:27:12,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 11:27:12,120 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 11:27:12,121 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 11:27:12,121 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 11:27:12,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 11:27:12,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 11:27:12,121 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 11:27:12,122 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 11:27:12,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 11:27:12,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 11:27:14,113 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 11:27:14,114 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 11:27:14,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:27:14 BoogieIcfgContainer [2020-10-12 11:27:14,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 11:27:14,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 11:27:14,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 11:27:14,126 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 11:27:14,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:27:10" (1/3) ... [2020-10-12 11:27:14,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36ac93b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:27:14, skipping insertion in model container [2020-10-12 11:27:14,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:27:11" (2/3) ... [2020-10-12 11:27:14,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36ac93b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:27:14, skipping insertion in model container [2020-10-12 11:27:14,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:27:14" (3/3) ... [2020-10-12 11:27:14,131 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label53.c [2020-10-12 11:27:14,143 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 11:27:14,152 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 11:27:14,167 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 11:27:14,196 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 11:27:14,197 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 11:27:14,197 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 11:27:14,197 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 11:27:14,197 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 11:27:14,197 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 11:27:14,198 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 11:27:14,198 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 11:27:14,224 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-12 11:27:14,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-12 11:27:14,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:27:14,243 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:27:14,244 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:27:14,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:27:14,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1005692243, now seen corresponding path program 1 times [2020-10-12 11:27:14,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:27:14,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158794429] [2020-10-12 11:27:14,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:27:14,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:14,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:15,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:18,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:18,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-12 11:27:18,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:27:18,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3983 [2020-10-12 11:27:18,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:18,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 11:27:18,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:27:18,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-12 11:27:18,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 11:27:19,717 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-12 11:27:20,332 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 89 [2020-10-12 11:27:20,547 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 80 [2020-10-12 11:27:20,751 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 73 [2020-10-12 11:27:20,986 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 65 [2020-10-12 11:27:21,152 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 57 [2020-10-12 11:27:21,327 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 44 [2020-10-12 11:27:21,499 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:27:21,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:27:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:21,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:21,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:21,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:27:21,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:27:21,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 11:27:21,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:21,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:27:21,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:27:21,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:27:21,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:22,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:27:22,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [158794429] [2020-10-12 11:27:22,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 11:27:22,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 11:27:22,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106487331] [2020-10-12 11:27:22,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 11:27:22,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:27:22,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 11:27:22,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-12 11:27:22,546 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 13 states. [2020-10-12 11:27:23,079 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-12 11:27:24,056 WARN L193 SmtUtils]: Spent 882.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 190 [2020-10-12 11:27:24,979 WARN L193 SmtUtils]: Spent 864.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 190 [2020-10-12 11:27:26,085 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 252 DAG size of output: 210 [2020-10-12 11:27:27,184 WARN L193 SmtUtils]: Spent 978.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 207 [2020-10-12 11:27:28,579 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 246 DAG size of output: 204 [2020-10-12 11:27:30,086 WARN L193 SmtUtils]: Spent 978.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 201 [2020-10-12 11:27:33,705 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 244 DAG size of output: 199 [2020-10-12 11:27:35,371 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 244 DAG size of output: 194 [2020-10-12 11:27:37,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:27:37,774 INFO L93 Difference]: Finished difference Result 737 states and 1287 transitions. [2020-10-12 11:27:37,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 11:27:37,778 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 200 [2020-10-12 11:27:37,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:27:37,796 INFO L225 Difference]: With dead ends: 737 [2020-10-12 11:27:37,797 INFO L226 Difference]: Without dead ends: 364 [2020-10-12 11:27:37,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2020-10-12 11:27:37,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-12 11:27:37,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2020-10-12 11:27:37,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-12 11:27:37,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 525 transitions. [2020-10-12 11:27:37,886 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 525 transitions. Word has length 200 [2020-10-12 11:27:37,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:27:37,887 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 525 transitions. [2020-10-12 11:27:37,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 11:27:37,888 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 525 transitions. [2020-10-12 11:27:37,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-12 11:27:37,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:27:37,897 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:27:37,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 11:27:37,900 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:27:37,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:27:37,901 INFO L82 PathProgramCache]: Analyzing trace with hash 768947686, now seen corresponding path program 1 times [2020-10-12 11:27:37,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:27:37,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616355263] [2020-10-12 11:27:37,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:27:38,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:38,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:38,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:39,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:42,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:42,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-12 11:27:42,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:27:42,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4229 [2020-10-12 11:27:42,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:42,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 11:27:42,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:27:42,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-12 11:27:42,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:43,305 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-12 11:27:43,464 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-12 11:27:43,804 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 76 [2020-10-12 11:27:44,139 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 83 [2020-10-12 11:27:44,350 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 76 [2020-10-12 11:27:44,520 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 64 [2020-10-12 11:27:44,659 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2020-10-12 11:27:44,928 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:27:44,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:27:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:44,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:44,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:44,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:27:44,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:27:44,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 11:27:44,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:44,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:27:44,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:27:44,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:27:44,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:45,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:27:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:27:45,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:27:45,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:27:45,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:27:45,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:27:45,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-12 11:27:45,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:27:45,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:27:45,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:27:45,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:27:45,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:27:45,382 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2020-10-12 11:27:45,716 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 83 [2020-10-12 11:27:46,412 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:27:46,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616355263] [2020-10-12 11:27:46,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:27:46,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 11:27:46,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106373277] [2020-10-12 11:27:46,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 11:27:46,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:27:46,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 11:27:46,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-10-12 11:27:46,417 INFO L87 Difference]: Start difference. First operand 364 states and 525 transitions. Second operand 16 states. [2020-10-12 11:27:46,705 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2020-10-12 11:27:47,388 WARN L193 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 81 [2020-10-12 11:27:47,729 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 62 [2020-10-12 11:27:48,163 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 87 [2020-10-12 11:27:48,884 WARN L193 SmtUtils]: Spent 653.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 181 [2020-10-12 11:27:49,702 WARN L193 SmtUtils]: Spent 746.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 201 [2020-10-12 11:27:51,033 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 238 DAG size of output: 198 [2020-10-12 11:27:51,639 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 82 [2020-10-12 11:27:53,501 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 243 DAG size of output: 195 [2020-10-12 11:27:56,596 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 244 DAG size of output: 192 [2020-10-12 11:28:00,482 WARN L193 SmtUtils]: Spent 796.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 189 [2020-10-12 11:28:01,806 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 245 DAG size of output: 185 [2020-10-12 11:28:06,150 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 149 [2020-10-12 11:28:10,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:28:10,202 INFO L93 Difference]: Finished difference Result 1219 states and 1991 transitions. [2020-10-12 11:28:10,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 11:28:10,203 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 211 [2020-10-12 11:28:10,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:28:10,214 INFO L225 Difference]: With dead ends: 1219 [2020-10-12 11:28:10,215 INFO L226 Difference]: Without dead ends: 976 [2020-10-12 11:28:10,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=229, Invalid=641, Unknown=0, NotChecked=0, Total=870 [2020-10-12 11:28:10,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2020-10-12 11:28:10,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 958. [2020-10-12 11:28:10,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 958 states. [2020-10-12 11:28:10,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1326 transitions. [2020-10-12 11:28:10,310 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1326 transitions. Word has length 211 [2020-10-12 11:28:10,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:28:10,313 INFO L479 AbstractCegarLoop]: Abstraction has 958 states and 1326 transitions. [2020-10-12 11:28:10,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 11:28:10,313 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1326 transitions. [2020-10-12 11:28:10,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-12 11:28:10,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:28:10,318 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1] [2020-10-12 11:28:10,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 11:28:10,319 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:28:10,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:28:10,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1079193038, now seen corresponding path program 1 times [2020-10-12 11:28:10,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:28:10,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41209664] [2020-10-12 11:28:10,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:28:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:10,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:10,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:11,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:13,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:13,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-12 11:28:13,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:28:13,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2672 [2020-10-12 11:28:13,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:13,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:28:13,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:28:13,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 225 [2020-10-12 11:28:13,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:13,329 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:28:13,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:28:13,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:13,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:13,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:13,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:28:13,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:13,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 11:28:13,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:13,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:28:13,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:28:13,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:28:13,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 11:28:13,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:28:13,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:13,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:13,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:13,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:13,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:28:13,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:28:13,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-12 11:28:13,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:13,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:28:13,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:28:13,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:28:13,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:28:13,701 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 11:28:13,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41209664] [2020-10-12 11:28:13,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:28:13,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:28:13,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856317839] [2020-10-12 11:28:13,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 11:28:13,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:28:13,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 11:28:13,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:28:13,704 INFO L87 Difference]: Start difference. First operand 958 states and 1326 transitions. Second operand 6 states. [2020-10-12 11:28:13,886 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:28:16,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:28:16,437 INFO L93 Difference]: Finished difference Result 2508 states and 3663 transitions. [2020-10-12 11:28:16,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 11:28:16,438 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 221 [2020-10-12 11:28:16,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:28:16,451 INFO L225 Difference]: With dead ends: 2508 [2020-10-12 11:28:16,452 INFO L226 Difference]: Without dead ends: 1671 [2020-10-12 11:28:16,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:28:16,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1671 states. [2020-10-12 11:28:16,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1671 to 1660. [2020-10-12 11:28:16,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1660 states. [2020-10-12 11:28:16,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1660 states to 1660 states and 2381 transitions. [2020-10-12 11:28:16,535 INFO L78 Accepts]: Start accepts. Automaton has 1660 states and 2381 transitions. Word has length 221 [2020-10-12 11:28:16,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:28:16,536 INFO L479 AbstractCegarLoop]: Abstraction has 1660 states and 2381 transitions. [2020-10-12 11:28:16,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 11:28:16,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1660 states and 2381 transitions. [2020-10-12 11:28:16,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-12 11:28:16,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:28:16,544 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1] [2020-10-12 11:28:16,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 11:28:16,545 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:28:16,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:28:16,546 INFO L82 PathProgramCache]: Analyzing trace with hash 835662629, now seen corresponding path program 1 times [2020-10-12 11:28:16,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:28:16,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912843924] [2020-10-12 11:28:16,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:28:16,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:16,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:16,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:17,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:18,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:21,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:21,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:21,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-12 11:28:21,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:28:21,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-12 11:28:21,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:21,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:28:21,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:28:21,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 11:28:21,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:21,846 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:28:21,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:28:21,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:21,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:21,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:21,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:28:21,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:21,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 11:28:21,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:21,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:28:21,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:28:21,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:28:21,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:21,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:28:21,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:21,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:22,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:22,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:28:22,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:22,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-12 11:28:22,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:22,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:28:22,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:28:22,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:28:22,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:22,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:28:22,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:22,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:22,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:22,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 11:28:22,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:22,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 11:28:22,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:22,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:28:22,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:28:22,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 11:28:22,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:22,186 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 11:28:22,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912843924] [2020-10-12 11:28:22,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:28:22,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:28:22,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398274997] [2020-10-12 11:28:22,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:28:22,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:28:22,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:28:22,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:28:22,188 INFO L87 Difference]: Start difference. First operand 1660 states and 2381 transitions. Second operand 8 states. [2020-10-12 11:28:22,349 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:28:25,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:28:25,335 INFO L93 Difference]: Finished difference Result 4153 states and 6273 transitions. [2020-10-12 11:28:25,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 11:28:25,336 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 230 [2020-10-12 11:28:25,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:28:25,358 INFO L225 Difference]: With dead ends: 4153 [2020-10-12 11:28:25,358 INFO L226 Difference]: Without dead ends: 3202 [2020-10-12 11:28:25,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-12 11:28:25,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3202 states. [2020-10-12 11:28:25,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3202 to 3196. [2020-10-12 11:28:25,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3196 states. [2020-10-12 11:28:25,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3196 states to 3196 states and 4743 transitions. [2020-10-12 11:28:25,497 INFO L78 Accepts]: Start accepts. Automaton has 3196 states and 4743 transitions. Word has length 230 [2020-10-12 11:28:25,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:28:25,498 INFO L479 AbstractCegarLoop]: Abstraction has 3196 states and 4743 transitions. [2020-10-12 11:28:25,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:28:25,498 INFO L276 IsEmpty]: Start isEmpty. Operand 3196 states and 4743 transitions. [2020-10-12 11:28:25,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-12 11:28:25,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:28:25,507 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1] [2020-10-12 11:28:25,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 11:28:25,507 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:28:25,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:28:25,508 INFO L82 PathProgramCache]: Analyzing trace with hash -157202111, now seen corresponding path program 1 times [2020-10-12 11:28:25,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:28:25,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014630407] [2020-10-12 11:28:25,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:28:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:25,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:25,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:26,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:26,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:27,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:27,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-12 11:28:27,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:28:27,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2373 [2020-10-12 11:28:27,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:27,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 11:28:27,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 11:28:27,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-12 11:28:27,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:28,237 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:28:28,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:28:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:28,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:28,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:28,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:28:28,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:28,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:28:28,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:28,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:28:28,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:28:28,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:28:28,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:28,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:28:28,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:28,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:28,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:28,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:28:28,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:28,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 11:28:28,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:28,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:28:28,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:28:28,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 11:28:28,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:28,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:28:28,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:28,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:28,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:28,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:28,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:28:28,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:28:28,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-12 11:28:28,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:28,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:28:28,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:28:28,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:28:28,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:28,720 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 11:28:28,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014630407] [2020-10-12 11:28:28,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:28:28,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:28:28,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771102079] [2020-10-12 11:28:28,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:28:28,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:28:28,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:28:28,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:28:28,722 INFO L87 Difference]: Start difference. First operand 3196 states and 4743 transitions. Second operand 7 states. [2020-10-12 11:28:29,090 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-12 11:28:30,076 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-12 11:28:32,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:28:32,670 INFO L93 Difference]: Finished difference Result 6685 states and 10695 transitions. [2020-10-12 11:28:32,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 11:28:32,672 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 232 [2020-10-12 11:28:32,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:28:32,698 INFO L225 Difference]: With dead ends: 6685 [2020-10-12 11:28:32,698 INFO L226 Difference]: Without dead ends: 4387 [2020-10-12 11:28:32,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-10-12 11:28:32,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4387 states. [2020-10-12 11:28:32,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4387 to 4004. [2020-10-12 11:28:32,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4004 states. [2020-10-12 11:28:32,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4004 states to 4004 states and 5732 transitions. [2020-10-12 11:28:32,872 INFO L78 Accepts]: Start accepts. Automaton has 4004 states and 5732 transitions. Word has length 232 [2020-10-12 11:28:32,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:28:32,872 INFO L479 AbstractCegarLoop]: Abstraction has 4004 states and 5732 transitions. [2020-10-12 11:28:32,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:28:32,872 INFO L276 IsEmpty]: Start isEmpty. Operand 4004 states and 5732 transitions. [2020-10-12 11:28:32,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-12 11:28:32,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:28:32,888 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:28:32,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 11:28:32,889 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:28:32,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:28:32,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1833490962, now seen corresponding path program 1 times [2020-10-12 11:28:32,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:28:32,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732198413] [2020-10-12 11:28:32,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:28:32,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:32,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:33,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:33,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:34,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:37,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:37,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:37,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-12 11:28:37,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:28:37,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-12 11:28:37,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:37,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:28:37,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:28:37,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 11:28:37,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:38,147 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:28:38,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:28:38,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:38,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:38,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:38,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:28:38,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:38,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:28:38,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:38,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:28:38,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:28:38,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:28:38,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:38,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:28:38,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:38,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:38,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:38,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 11:28:38,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:38,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-12 11:28:38,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:38,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:28:38,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:28:38,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 11:28:38,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:38,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 11:28:38,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:38,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:38,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:38,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 11:28:38,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:38,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-12 11:28:38,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:38,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:28:38,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:28:38,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 11:28:38,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 11:28:38,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 11:28:38,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:38,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:38,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:38,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:28:38,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:38,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 11:28:38,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:38,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:28:38,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-12 11:28:38,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:28:38,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:28:38,678 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 52 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 11:28:38,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732198413] [2020-10-12 11:28:38,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:28:38,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:28:38,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462610277] [2020-10-12 11:28:38,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:28:38,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:28:38,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:28:38,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:28:38,682 INFO L87 Difference]: Start difference. First operand 4004 states and 5732 transitions. Second operand 8 states. [2020-10-12 11:28:38,866 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:28:39,476 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:28:42,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:28:42,116 INFO L93 Difference]: Finished difference Result 11079 states and 17083 transitions. [2020-10-12 11:28:42,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 11:28:42,117 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 256 [2020-10-12 11:28:42,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:28:42,158 INFO L225 Difference]: With dead ends: 11079 [2020-10-12 11:28:42,158 INFO L226 Difference]: Without dead ends: 7196 [2020-10-12 11:28:42,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2020-10-12 11:28:42,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7196 states. [2020-10-12 11:28:42,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7196 to 6896. [2020-10-12 11:28:42,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6896 states. [2020-10-12 11:28:42,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6896 states to 6896 states and 10113 transitions. [2020-10-12 11:28:42,458 INFO L78 Accepts]: Start accepts. Automaton has 6896 states and 10113 transitions. Word has length 256 [2020-10-12 11:28:42,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:28:42,459 INFO L479 AbstractCegarLoop]: Abstraction has 6896 states and 10113 transitions. [2020-10-12 11:28:42,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:28:42,459 INFO L276 IsEmpty]: Start isEmpty. Operand 6896 states and 10113 transitions. [2020-10-12 11:28:42,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-12 11:28:42,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:28:42,488 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:28:42,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 11:28:42,488 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:28:42,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:28:42,488 INFO L82 PathProgramCache]: Analyzing trace with hash 546045777, now seen corresponding path program 1 times [2020-10-12 11:28:42,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:28:42,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537933620] [2020-10-12 11:28:42,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:28:42,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:42,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:42,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:44,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:46,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:46,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-12 11:28:46,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:28:46,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4336 [2020-10-12 11:28:46,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:46,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:28:46,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:28:46,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 11:28:46,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:47,105 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:28:47,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:28:47,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:47,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:47,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:47,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:28:47,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:47,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 11:28:47,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:47,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:28:47,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:28:47,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:28:47,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:47,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:28:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:47,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:47,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:47,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 11:28:47,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:47,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-12 11:28:47,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:47,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:28:47,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:28:47,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 11:28:47,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:47,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 11:28:47,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:47,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:47,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:47,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 11:28:47,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:47,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 11:28:47,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:47,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:28:47,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 11:28:47,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:28:47,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:47,392 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 49 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 11:28:47,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537933620] [2020-10-12 11:28:47,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:28:47,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:28:47,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396959641] [2020-10-12 11:28:47,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:28:47,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:28:47,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:28:47,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:28:47,394 INFO L87 Difference]: Start difference. First operand 6896 states and 10113 transitions. Second operand 7 states. [2020-10-12 11:28:47,557 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-12 11:28:48,310 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 11:28:50,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:28:50,875 INFO L93 Difference]: Finished difference Result 17244 states and 26473 transitions. [2020-10-12 11:28:50,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 11:28:50,876 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 255 [2020-10-12 11:28:50,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:28:50,942 INFO L225 Difference]: With dead ends: 17244 [2020-10-12 11:28:50,942 INFO L226 Difference]: Without dead ends: 10469 [2020-10-12 11:28:50,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:28:50,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10469 states. [2020-10-12 11:28:51,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10469 to 9968. [2020-10-12 11:28:51,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9968 states. [2020-10-12 11:28:51,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9968 states to 9968 states and 14551 transitions. [2020-10-12 11:28:51,461 INFO L78 Accepts]: Start accepts. Automaton has 9968 states and 14551 transitions. Word has length 255 [2020-10-12 11:28:51,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:28:51,461 INFO L479 AbstractCegarLoop]: Abstraction has 9968 states and 14551 transitions. [2020-10-12 11:28:51,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:28:51,462 INFO L276 IsEmpty]: Start isEmpty. Operand 9968 states and 14551 transitions. [2020-10-12 11:28:51,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-10-12 11:28:51,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:28:51,483 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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] [2020-10-12 11:28:51,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 11:28:51,484 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:28:51,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:28:51,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1531993505, now seen corresponding path program 1 times [2020-10-12 11:28:51,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:28:51,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471554324] [2020-10-12 11:28:51,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:28:51,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:51,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:51,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:53,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:53,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:56,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:56,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-12 11:28:56,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:28:56,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-12 11:28:56,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:56,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:28:56,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 11:28:56,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 11:28:56,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:56,770 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:28:56,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:28:56,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:56,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:56,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:56,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:28:56,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:56,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:28:56,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:56,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:28:56,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:28:56,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:28:56,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:56,932 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-12 11:28:56,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:28:56,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:56,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:56,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:56,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:28:56,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:56,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 11:28:56,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:56,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:28:56,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:28:56,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 11:28:56,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:56,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:28:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:56,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:57,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:57,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 11:28:57,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:57,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-12 11:28:57,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:57,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:28:57,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:28:57,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 11:28:57,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:57,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 11:28:57,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:28:57,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:28:57,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:28:57,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:28:57,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:28:57,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 11:28:57,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:28:57,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:28:57,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:28:57,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:28:57,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:28:57,246 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 107 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-12 11:28:57,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471554324] [2020-10-12 11:28:57,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:28:57,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:28:57,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569255769] [2020-10-12 11:28:57,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:28:57,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:28:57,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:28:57,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:28:57,249 INFO L87 Difference]: Start difference. First operand 9968 states and 14551 transitions. Second operand 8 states. [2020-10-12 11:28:57,572 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:28:58,814 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 11:29:00,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:29:00,503 INFO L93 Difference]: Finished difference Result 19853 states and 29598 transitions. [2020-10-12 11:29:00,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 11:29:00,504 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 290 [2020-10-12 11:29:00,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:29:00,549 INFO L225 Difference]: With dead ends: 19853 [2020-10-12 11:29:00,549 INFO L226 Difference]: Without dead ends: 10006 [2020-10-12 11:29:00,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:29:00,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10006 states. [2020-10-12 11:29:00,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10006 to 9872. [2020-10-12 11:29:00,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9872 states. [2020-10-12 11:29:00,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9872 states to 9872 states and 13469 transitions. [2020-10-12 11:29:00,902 INFO L78 Accepts]: Start accepts. Automaton has 9872 states and 13469 transitions. Word has length 290 [2020-10-12 11:29:00,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:29:00,903 INFO L479 AbstractCegarLoop]: Abstraction has 9872 states and 13469 transitions. [2020-10-12 11:29:00,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:29:00,903 INFO L276 IsEmpty]: Start isEmpty. Operand 9872 states and 13469 transitions. [2020-10-12 11:29:00,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-12 11:29:00,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:29:00,930 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 1] [2020-10-12 11:29:00,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 11:29:00,930 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:29:00,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:29:00,931 INFO L82 PathProgramCache]: Analyzing trace with hash -903808873, now seen corresponding path program 1 times [2020-10-12 11:29:00,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:29:00,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287540326] [2020-10-12 11:29:00,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:29:01,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:01,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:01,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:01,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:04,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:05,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:06,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:06,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-12 11:29:06,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:29:06,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-12 11:29:06,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:06,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:29:06,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 11:29:06,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 11:29:06,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:06,286 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:29:06,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:29:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:06,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:06,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:06,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:29:06,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:06,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:29:06,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:06,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:29:06,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:29:06,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:29:06,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:29:06,426 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-12 11:29:06,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:29:06,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:06,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:06,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:06,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:29:06,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:06,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-12 11:29:06,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:06,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:29:06,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:29:06,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 11:29:06,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:29:06,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:29:06,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:06,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:06,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:06,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 11:29:06,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:06,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-12 11:29:06,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:06,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:29:06,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:29:06,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 11:29:06,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:06,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 11:29:06,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:06,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:06,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:06,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 11:29:06,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:06,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 11:29:06,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:06,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:29:06,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:29:06,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 11:29:06,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:06,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-12 11:29:06,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:06,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:06,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:06,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:29:06,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:06,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 11:29:06,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:06,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:29:06,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-12 11:29:06,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:29:06,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:07,039 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 129 proven. 27 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-12 11:29:07,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287540326] [2020-10-12 11:29:07,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:29:07,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:29:07,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623850511] [2020-10-12 11:29:07,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:29:07,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:29:07,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:29:07,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:29:07,042 INFO L87 Difference]: Start difference. First operand 9872 states and 13469 transitions. Second operand 8 states. [2020-10-12 11:29:07,301 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 11:29:07,585 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 11:29:11,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:29:11,528 INFO L93 Difference]: Finished difference Result 25091 states and 34697 transitions. [2020-10-12 11:29:11,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 11:29:11,529 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 304 [2020-10-12 11:29:11,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:29:11,583 INFO L225 Difference]: With dead ends: 25091 [2020-10-12 11:29:11,583 INFO L226 Difference]: Without dead ends: 15340 [2020-10-12 11:29:11,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-12 11:29:11,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15340 states. [2020-10-12 11:29:12,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15340 to 15074. [2020-10-12 11:29:12,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15074 states. [2020-10-12 11:29:12,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15074 states to 15074 states and 20287 transitions. [2020-10-12 11:29:12,132 INFO L78 Accepts]: Start accepts. Automaton has 15074 states and 20287 transitions. Word has length 304 [2020-10-12 11:29:12,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:29:12,132 INFO L479 AbstractCegarLoop]: Abstraction has 15074 states and 20287 transitions. [2020-10-12 11:29:12,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:29:12,132 INFO L276 IsEmpty]: Start isEmpty. Operand 15074 states and 20287 transitions. [2020-10-12 11:29:12,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-12 11:29:12,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:29:12,157 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 1] [2020-10-12 11:29:12,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 11:29:12,158 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:29:12,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:29:12,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1892330181, now seen corresponding path program 1 times [2020-10-12 11:29:12,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:29:12,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673712321] [2020-10-12 11:29:12,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:29:12,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:12,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:12,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:12,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:13,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:16,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:17,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:17,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-12 11:29:17,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:29:17,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-12 11:29:17,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:17,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:29:17,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-12 11:29:17,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 11:29:17,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:17,576 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:29:17,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:29:17,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:17,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:17,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:17,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:29:17,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:17,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:29:17,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:17,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:29:17,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:29:17,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:29:17,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:17,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:29:17,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:17,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:17,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:17,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:29:17,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:17,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:29:17,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:17,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:29:17,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:29:17,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:29:17,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:17,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:29:17,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:17,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:17,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:17,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 11:29:17,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:17,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-12 11:29:17,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:17,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:29:17,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:29:17,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 11:29:17,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:17,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 11:29:17,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:17,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:17,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:17,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 11:29:17,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:17,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 11:29:17,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:17,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:29:17,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:29:17,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 11:29:17,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:17,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-12 11:29:17,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:17,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:17,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:17,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:29:17,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:17,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 11:29:17,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:17,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:29:17,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:29:17,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:29:17,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:17,982 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 143 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-12 11:29:17,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673712321] [2020-10-12 11:29:17,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:29:17,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:29:17,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6798531] [2020-10-12 11:29:17,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:29:17,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:29:17,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:29:17,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:29:17,984 INFO L87 Difference]: Start difference. First operand 15074 states and 20287 transitions. Second operand 8 states. [2020-10-12 11:29:18,219 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:29:18,466 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-12 11:29:23,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:29:23,981 INFO L93 Difference]: Finished difference Result 34804 states and 52416 transitions. [2020-10-12 11:29:23,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 11:29:23,982 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 306 [2020-10-12 11:29:23,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:29:24,095 INFO L225 Difference]: With dead ends: 34804 [2020-10-12 11:29:24,096 INFO L226 Difference]: Without dead ends: 28317 [2020-10-12 11:29:24,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-12 11:29:24,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28317 states. [2020-10-12 11:29:24,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28317 to 26802. [2020-10-12 11:29:24,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26802 states. [2020-10-12 11:29:24,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26802 states to 26802 states and 37257 transitions. [2020-10-12 11:29:24,889 INFO L78 Accepts]: Start accepts. Automaton has 26802 states and 37257 transitions. Word has length 306 [2020-10-12 11:29:24,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:29:24,890 INFO L479 AbstractCegarLoop]: Abstraction has 26802 states and 37257 transitions. [2020-10-12 11:29:24,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:29:24,890 INFO L276 IsEmpty]: Start isEmpty. Operand 26802 states and 37257 transitions. [2020-10-12 11:29:24,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-10-12 11:29:24,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:29:24,936 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:29:24,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 11:29:24,936 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:29:24,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:29:24,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1601122831, now seen corresponding path program 1 times [2020-10-12 11:29:24,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:29:24,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967375260] [2020-10-12 11:29:24,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:29:25,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:25,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:25,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:27,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:30,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:30,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-12 11:29:30,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:29:30,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-12 11:29:30,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:30,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 11:29:30,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:29:30,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 238 [2020-10-12 11:29:30,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:31,296 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 82 [2020-10-12 11:29:31,589 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 84 [2020-10-12 11:29:31,886 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 78 [2020-10-12 11:29:32,127 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 71 [2020-10-12 11:29:32,346 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 58 [2020-10-12 11:29:32,511 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 42 [2020-10-12 11:29:32,670 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:29:32,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:29:32,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:32,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:32,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:32,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:29:32,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:32,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 11:29:32,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:32,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:29:32,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:29:32,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:29:32,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:32,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:29:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:32,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:33,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:33,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 11:29:33,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:33,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-12 11:29:33,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:33,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:29:33,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:29:33,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-12 11:29:33,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:34,603 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 2 proven. 101 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:29:34,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967375260] [2020-10-12 11:29:34,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:29:34,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 11:29:34,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098119657] [2020-10-12 11:29:34,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 11:29:34,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:29:34,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 11:29:34,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-10-12 11:29:34,605 INFO L87 Difference]: Start difference. First operand 26802 states and 37257 transitions. Second operand 17 states. [2020-10-12 11:29:34,905 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-12 11:29:37,676 WARN L193 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 103 [2020-10-12 11:29:38,162 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 81 [2020-10-12 11:29:38,782 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 106 [2020-10-12 11:29:39,682 WARN L193 SmtUtils]: Spent 822.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 182 [2020-10-12 11:29:40,734 WARN L193 SmtUtils]: Spent 959.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 202 [2020-10-12 11:29:42,829 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 234 DAG size of output: 199 [2020-10-12 11:29:44,706 WARN L193 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 236 DAG size of output: 196 [2020-10-12 11:29:47,358 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 236 DAG size of output: 193 [2020-10-12 11:29:47,869 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-10-12 11:29:49,399 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 237 DAG size of output: 190 [2020-10-12 11:29:51,288 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 237 DAG size of output: 186 [2020-10-12 11:29:52,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:29:52,870 INFO L93 Difference]: Finished difference Result 46348 states and 63832 transitions. [2020-10-12 11:29:52,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 11:29:52,871 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 306 [2020-10-12 11:29:52,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:29:52,948 INFO L225 Difference]: With dead ends: 46348 [2020-10-12 11:29:52,948 INFO L226 Difference]: Without dead ends: 19667 [2020-10-12 11:29:52,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=215, Invalid=597, Unknown=0, NotChecked=0, Total=812 [2020-10-12 11:29:53,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19667 states. [2020-10-12 11:29:53,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19667 to 19507. [2020-10-12 11:29:53,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19507 states. [2020-10-12 11:29:53,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19507 states to 19507 states and 26393 transitions. [2020-10-12 11:29:53,443 INFO L78 Accepts]: Start accepts. Automaton has 19507 states and 26393 transitions. Word has length 306 [2020-10-12 11:29:53,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:29:53,443 INFO L479 AbstractCegarLoop]: Abstraction has 19507 states and 26393 transitions. [2020-10-12 11:29:53,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 11:29:53,444 INFO L276 IsEmpty]: Start isEmpty. Operand 19507 states and 26393 transitions. [2020-10-12 11:29:53,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-12 11:29:53,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:29:53,479 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 1] [2020-10-12 11:29:53,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 11:29:53,480 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:29:53,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:29:53,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1927650289, now seen corresponding path program 1 times [2020-10-12 11:29:53,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:29:53,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951001645] [2020-10-12 11:29:53,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:29:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:53,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:53,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:54,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:56,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:58,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:58,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-12 11:29:58,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:29:58,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5201 [2020-10-12 11:29:58,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:58,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:29:58,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-12 11:29:58,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 11:29:58,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:58,935 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:29:58,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:29:58,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:58,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:58,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:58,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:29:58,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:58,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:29:58,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:58,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:29:58,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:29:58,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:29:58,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:59,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:29:59,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:59,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:59,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:59,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:29:59,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:59,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 11:29:59,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:59,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:29:59,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:29:59,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:29:59,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:59,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:29:59,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:59,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:59,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:59,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 11:29:59,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:59,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 11:29:59,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:59,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:29:59,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:29:59,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:29:59,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:59,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 11:29:59,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:59,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:59,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:59,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 11:29:59,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:59,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 11:29:59,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:59,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:29:59,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:29:59,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 11:29:59,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:59,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-12 11:29:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:29:59,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:29:59,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:29:59,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:29:59,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:29:59,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 11:29:59,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:29:59,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:29:59,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:29:59,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 11:29:59,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:29:59,280 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-12 11:29:59,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951001645] [2020-10-12 11:29:59,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:29:59,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:29:59,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314818] [2020-10-12 11:29:59,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:29:59,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:29:59,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:29:59,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:29:59,282 INFO L87 Difference]: Start difference. First operand 19507 states and 26393 transitions. Second operand 7 states. [2020-10-12 11:29:59,444 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:30:01,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:30:01,286 INFO L93 Difference]: Finished difference Result 29295 states and 39709 transitions. [2020-10-12 11:30:01,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 11:30:01,287 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 312 [2020-10-12 11:30:01,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:30:01,338 INFO L225 Difference]: With dead ends: 29295 [2020-10-12 11:30:01,339 INFO L226 Difference]: Without dead ends: 18895 [2020-10-12 11:30:01,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:30:01,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18895 states. [2020-10-12 11:30:01,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18895 to 18851. [2020-10-12 11:30:01,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18851 states. [2020-10-12 11:30:01,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18851 states to 18851 states and 24970 transitions. [2020-10-12 11:30:01,806 INFO L78 Accepts]: Start accepts. Automaton has 18851 states and 24970 transitions. Word has length 312 [2020-10-12 11:30:01,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:30:01,807 INFO L479 AbstractCegarLoop]: Abstraction has 18851 states and 24970 transitions. [2020-10-12 11:30:01,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:30:01,807 INFO L276 IsEmpty]: Start isEmpty. Operand 18851 states and 24970 transitions. [2020-10-12 11:30:01,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-12 11:30:01,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:30:01,823 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 1, 1] [2020-10-12 11:30:01,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 11:30:01,824 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:30:01,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:30:01,824 INFO L82 PathProgramCache]: Analyzing trace with hash 810973811, now seen corresponding path program 1 times [2020-10-12 11:30:01,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:30:01,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005532478] [2020-10-12 11:30:01,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:30:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:01,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:01,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:02,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:03,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:06,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:06,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-12 11:30:06,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:30:06,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-12 11:30:06,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:06,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:30:06,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 125 [2020-10-12 11:30:06,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 11:30:06,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:30:07,245 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:30:07,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:30:07,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:07,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:07,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:07,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:30:07,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:30:07,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:30:07,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:07,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:30:07,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:30:07,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:30:07,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:30:07,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:30:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:07,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:07,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:07,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:30:07,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:30:07,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 11:30:07,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:07,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:30:07,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:30:07,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:30:07,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:30:07,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:30:07,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:07,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:07,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:07,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 11:30:07,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:30:07,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 11:30:07,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:07,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:30:07,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:30:07,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:30:07,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:30:07,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 11:30:07,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:07,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:07,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:07,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 11:30:07,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:30:07,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:30:07,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:07,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:30:07,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:30:07,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:30:07,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:30:07,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-12 11:30:07,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:07,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:07,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:07,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 11:30:07,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:30:07,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 11:30:07,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:07,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:30:07,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:30:07,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 11:30:07,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:30:07,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-12 11:30:07,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:07,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:07,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:07,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:30:07,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:30:07,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 11:30:07,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:07,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:30:07,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:30:07,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:30:07,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:30:07,665 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-12 11:30:07,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005532478] [2020-10-12 11:30:07,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:30:07,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:30:07,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666144794] [2020-10-12 11:30:07,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:30:07,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:30:07,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:30:07,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:30:07,668 INFO L87 Difference]: Start difference. First operand 18851 states and 24970 transitions. Second operand 7 states. [2020-10-12 11:30:07,899 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:30:08,178 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:30:11,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:30:11,617 INFO L93 Difference]: Finished difference Result 47591 states and 63963 transitions. [2020-10-12 11:30:11,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 11:30:11,618 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 320 [2020-10-12 11:30:11,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:30:11,693 INFO L225 Difference]: With dead ends: 47591 [2020-10-12 11:30:11,694 INFO L226 Difference]: Without dead ends: 29139 [2020-10-12 11:30:11,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:30:11,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29139 states. [2020-10-12 11:30:12,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29139 to 28914. [2020-10-12 11:30:12,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28914 states. [2020-10-12 11:30:12,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28914 states to 28914 states and 36106 transitions. [2020-10-12 11:30:12,328 INFO L78 Accepts]: Start accepts. Automaton has 28914 states and 36106 transitions. Word has length 320 [2020-10-12 11:30:12,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:30:12,328 INFO L479 AbstractCegarLoop]: Abstraction has 28914 states and 36106 transitions. [2020-10-12 11:30:12,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:30:12,329 INFO L276 IsEmpty]: Start isEmpty. Operand 28914 states and 36106 transitions. [2020-10-12 11:30:12,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-12 11:30:12,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:30:12,342 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:30:12,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 11:30:12,342 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:30:12,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:30:12,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1698806111, now seen corresponding path program 1 times [2020-10-12 11:30:12,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:30:12,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352181713] [2020-10-12 11:30:12,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:30:12,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:12,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:12,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:12,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:13,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:15,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:17,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:17,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:17,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-12 11:30:17,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 11:30:17,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 11:30:17,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:17,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:30:17,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:30:17,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-12 11:30:17,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:30:17,561 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:30:17,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:30:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:17,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:17,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:17,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:30:17,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:30:17,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 11:30:17,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:17,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:30:17,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:30:17,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:30:17,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:30:17,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:30:17,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:17,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:17,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:17,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 11:30:17,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:30:17,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-12 11:30:17,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:17,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:30:17,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:30:17,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 11:30:17,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:30:17,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 11:30:17,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:17,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:17,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:17,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 11:30:17,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:30:17,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 11:30:17,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:17,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:30:17,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:30:17,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 11:30:17,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:30:17,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 11:30:17,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:17,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:17,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:17,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:30:17,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:30:17,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 11:30:17,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:17,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:30:17,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-12 11:30:17,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:30:17,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:30:18,066 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 115 proven. 11 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 11:30:18,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352181713] [2020-10-12 11:30:18,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:30:18,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:30:18,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810446520] [2020-10-12 11:30:18,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:30:18,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:30:18,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:30:18,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:30:18,068 INFO L87 Difference]: Start difference. First operand 28914 states and 36106 transitions. Second operand 7 states. [2020-10-12 11:30:18,219 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:30:19,376 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 11:30:21,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:30:21,200 INFO L93 Difference]: Finished difference Result 64867 states and 82176 transitions. [2020-10-12 11:30:21,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 11:30:21,201 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 321 [2020-10-12 11:30:21,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:30:21,304 INFO L225 Difference]: With dead ends: 64867 [2020-10-12 11:30:21,304 INFO L226 Difference]: Without dead ends: 36352 [2020-10-12 11:30:21,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-12 11:30:21,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36352 states. [2020-10-12 11:30:22,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36352 to 35687. [2020-10-12 11:30:22,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35687 states. [2020-10-12 11:30:22,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35687 states to 35687 states and 44936 transitions. [2020-10-12 11:30:22,174 INFO L78 Accepts]: Start accepts. Automaton has 35687 states and 44936 transitions. Word has length 321 [2020-10-12 11:30:22,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:30:22,174 INFO L479 AbstractCegarLoop]: Abstraction has 35687 states and 44936 transitions. [2020-10-12 11:30:22,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:30:22,174 INFO L276 IsEmpty]: Start isEmpty. Operand 35687 states and 44936 transitions. [2020-10-12 11:30:22,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-12 11:30:22,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:30:22,196 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:30:22,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 11:30:22,196 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:30:22,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:30:22,197 INFO L82 PathProgramCache]: Analyzing trace with hash 966520564, now seen corresponding path program 1 times [2020-10-12 11:30:22,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:30:22,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137351680] [2020-10-12 11:30:22,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:30:22,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:22,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:22,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:22,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:23,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:26,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:27,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:27,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-12 11:30:27,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:30:27,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-12 11:30:27,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:27,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:30:27,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:30:27,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-12 11:30:27,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:30:27,496 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:30:27,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:30:27,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:27,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:27,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:27,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:30:27,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:30:27,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 11:30:27,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:27,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:30:27,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:30:27,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:30:27,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:30:27,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:30:27,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:27,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:27,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:27,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:27,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 11:30:27,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:30:27,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-12 11:30:27,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:27,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:30:27,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:30:27,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 11:30:27,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:30:27,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 11:30:27,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:27,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:27,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:27,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 11:30:27,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:30:27,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 11:30:27,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:27,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:30:27,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:30:27,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 11:30:27,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:30:28,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-12 11:30:28,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:28,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:28,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:28,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:30:28,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:30:28,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 11:30:28,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:28,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:30:28,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-12 11:30:28,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:30:28,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:30:28,230 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 123 proven. 23 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 11:30:28,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137351680] [2020-10-12 11:30:28,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:30:28,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:30:28,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243749341] [2020-10-12 11:30:28,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:30:28,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:30:28,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:30:28,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:30:28,232 INFO L87 Difference]: Start difference. First operand 35687 states and 44936 transitions. Second operand 8 states. [2020-10-12 11:30:28,399 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:30:31,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:30:31,628 INFO L93 Difference]: Finished difference Result 90931 states and 114938 transitions. [2020-10-12 11:30:31,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 11:30:31,629 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 327 [2020-10-12 11:30:31,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:30:31,744 INFO L225 Difference]: With dead ends: 90931 [2020-10-12 11:30:31,744 INFO L226 Difference]: Without dead ends: 55643 [2020-10-12 11:30:31,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-10-12 11:30:31,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55643 states. [2020-10-12 11:30:32,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55643 to 55345. [2020-10-12 11:30:32,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55345 states. [2020-10-12 11:30:32,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55345 states to 55345 states and 69747 transitions. [2020-10-12 11:30:32,880 INFO L78 Accepts]: Start accepts. Automaton has 55345 states and 69747 transitions. Word has length 327 [2020-10-12 11:30:32,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:30:32,881 INFO L479 AbstractCegarLoop]: Abstraction has 55345 states and 69747 transitions. [2020-10-12 11:30:32,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:30:32,881 INFO L276 IsEmpty]: Start isEmpty. Operand 55345 states and 69747 transitions. [2020-10-12 11:30:32,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-12 11:30:32,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:30:32,909 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:30:32,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 11:30:32,910 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:30:32,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:30:32,910 INFO L82 PathProgramCache]: Analyzing trace with hash -2088692996, now seen corresponding path program 1 times [2020-10-12 11:30:32,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:30:32,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188366096] [2020-10-12 11:30:32,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:30:32,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:33,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:33,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:34,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:37,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:37,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:38,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:38,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 342 [2020-10-12 11:30:38,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 11:30:38,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5100 [2020-10-12 11:30:38,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:38,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 11:30:38,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:30:38,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 336 [2020-10-12 11:30:38,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:30:38,309 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:30:38,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:30:38,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:38,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:38,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:38,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:30:38,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:30:38,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:30:38,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:38,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:30:38,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:30:38,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:30:38,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:30:38,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:30:38,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:38,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:38,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:38,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 11:30:38,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:30:38,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-12 11:30:38,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:38,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:30:38,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:30:38,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 11:30:38,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:30:38,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 11:30:38,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:30:38,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:38,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:30:38,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:30:38,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 11:30:38,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:30:38,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-12 11:30:38,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:30:38,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:30:38,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:30:38,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 11:30:38,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:30:39,040 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 116 proven. 27 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 11:30:39,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188366096] [2020-10-12 11:30:39,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:30:39,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:30:39,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742909597] [2020-10-12 11:30:39,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:30:39,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:30:39,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:30:39,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:30:39,044 INFO L87 Difference]: Start difference. First operand 55345 states and 69747 transitions. Second operand 8 states. [2020-10-12 11:30:39,197 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:30:40,831 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:30:42,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:30:42,497 INFO L93 Difference]: Finished difference Result 142465 states and 182559 transitions. [2020-10-12 11:30:42,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 11:30:42,498 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 330 [2020-10-12 11:30:42,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:30:42,690 INFO L225 Difference]: With dead ends: 142465 [2020-10-12 11:30:42,690 INFO L226 Difference]: Without dead ends: 87519 [2020-10-12 11:30:42,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-12 11:30:42,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87519 states.