/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 SingleStatement --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=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:03:33,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:03:33,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:03:33,206 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:03:33,206 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:03:33,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:03:33,209 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:03:33,211 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:03:33,214 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:03:33,215 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:03:33,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:03:33,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:03:33,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:03:33,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:03:33,220 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:03:33,222 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:03:33,223 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:03:33,224 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:03:33,226 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:03:33,228 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:03:33,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:03:33,231 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:03:33,232 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:03:33,234 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:03:33,236 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:03:33,237 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:03:33,237 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:03:33,238 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:03:33,239 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:03:33,240 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:03:33,240 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:03:33,241 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:03:33,242 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:03:33,243 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:03:33,245 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:03:33,245 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:03:33,246 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:03:33,246 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:03:33,246 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:03:33,248 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:03:33,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:03:33,250 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 [2020-09-25 01:03:33,278 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:03:33,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:03:33,280 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:03:33,280 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:03:33,280 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:03:33,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:03:33,280 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:03:33,281 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:03:33,281 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:03:33,281 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:03:33,281 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:03:33,282 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:03:33,282 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:03:33,282 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:03:33,282 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:03:33,282 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:03:33,283 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:03:33,283 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:03:33,283 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:03:33,283 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:03:33,283 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:03:33,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:03:33,284 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:03:33,284 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:03:33,284 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:03:33,284 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:03:33,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:03:33,285 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:03:33,285 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:03:33,285 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 -> SingleStatement 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=DEEPEST;log-additional-information=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=DEEPEST;log-additional-information=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=DEEPEST;log-additional-information=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=DEEPEST;log-additional-information=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=DEEPEST;log-additional-information=true; [2020-09-25 01:03:33,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:03:33,868 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:03:33,875 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:03:33,878 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:03:33,879 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:03:33,881 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label50.c [2020-09-25 01:03:34,030 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c073e2fd/427c223d4dbc4775b4456131e94f7714/FLAGafb266d6a [2020-09-25 01:03:34,795 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:03:34,796 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label50.c [2020-09-25 01:03:34,815 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c073e2fd/427c223d4dbc4775b4456131e94f7714/FLAGafb266d6a [2020-09-25 01:03:34,989 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c073e2fd/427c223d4dbc4775b4456131e94f7714 [2020-09-25 01:03:35,009 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:03:35,024 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:03:35,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:03:35,027 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:03:35,031 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:03:35,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:03:34" (1/1) ... [2020-09-25 01:03:35,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12925ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:03:35, skipping insertion in model container [2020-09-25 01:03:35,038 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:03:34" (1/1) ... [2020-09-25 01:03:35,050 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:03:35,121 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:03:35,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:03:35,611 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:03:35,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:03:35,881 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:03:35,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:03:35 WrapperNode [2020-09-25 01:03:35,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:03:35,884 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:03:35,884 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:03:35,884 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:03:35,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:03:35" (1/1) ... [2020-09-25 01:03:35,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:03:35" (1/1) ... [2020-09-25 01:03:35,922 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:03:35" (1/1) ... [2020-09-25 01:03:35,922 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:03:35" (1/1) ... [2020-09-25 01:03:35,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:03:35" (1/1) ... [2020-09-25 01:03:35,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:03:35" (1/1) ... [2020-09-25 01:03:35,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:03:35" (1/1) ... [2020-09-25 01:03:35,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:03:35,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:03:35,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:03:35,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:03:35,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:03:35" (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 [2020-09-25 01:03:36,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:03:36,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:03:36,072 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 01:03:36,073 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:03:36,073 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 01:03:36,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:03:36,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 01:03:36,073 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 01:03:36,074 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:03:36,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:03:36,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:03:37,538 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:03:37,539 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 01:03:37,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:03:37 BoogieIcfgContainer [2020-09-25 01:03:37,548 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:03:37,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:03:37,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:03:37,553 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:03:37,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:03:34" (1/3) ... [2020-09-25 01:03:37,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd8893e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:03:37, skipping insertion in model container [2020-09-25 01:03:37,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:03:35" (2/3) ... [2020-09-25 01:03:37,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd8893e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:03:37, skipping insertion in model container [2020-09-25 01:03:37,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:03:37" (3/3) ... [2020-09-25 01:03:37,557 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label50.c [2020-09-25 01:03:37,569 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:03:37,581 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:03:37,604 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:03:37,641 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:03:37,641 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:03:37,641 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:03:37,641 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:03:37,642 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:03:37,642 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:03:37,642 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:03:37,642 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:03:37,677 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 01:03:37,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-25 01:03:37,698 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:03:37,699 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] [2020-09-25 01:03:37,700 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:03:37,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:03:37,707 INFO L82 PathProgramCache]: Analyzing trace with hash -593885342, now seen corresponding path program 1 times [2020-09-25 01:03:37,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:03:37,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625476934] [2020-09-25 01:03:37,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:03:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:03:38,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:03:38,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:03:38,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:03:40,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:03:42,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:03:42,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-25 01:03:42,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 01:03:42,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4387 [2020-09-25 01:03:42,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:03:42,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:03:42,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 01:03:42,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 01:03:42,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 01:03:42,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:03:42,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:03:42,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:03:42,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:03:42,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 01:03:42,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:03:42,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 01:03:42,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:03:42,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:03:42,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:03:42,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 01:03:42,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:03:42,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:03:42,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625476934] [2020-09-25 01:03:42,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:03:42,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 01:03:42,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803777727] [2020-09-25 01:03:42,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 01:03:42,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:03:42,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 01:03:42,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 01:03:42,659 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 01:03:44,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:03:44,651 INFO L93 Difference]: Finished difference Result 1206 states and 1652 transitions. [2020-09-25 01:03:44,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 01:03:44,657 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2020-09-25 01:03:44,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:03:44,694 INFO L225 Difference]: With dead ends: 1206 [2020-09-25 01:03:44,694 INFO L226 Difference]: Without dead ends: 628 [2020-09-25 01:03:44,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:03:44,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-09-25 01:03:44,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 615. [2020-09-25 01:03:44,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-09-25 01:03:44,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 751 transitions. [2020-09-25 01:03:44,806 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 751 transitions. Word has length 107 [2020-09-25 01:03:44,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:03:44,807 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 751 transitions. [2020-09-25 01:03:44,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 01:03:44,808 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 751 transitions. [2020-09-25 01:03:44,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 01:03:44,819 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:03:44,820 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:03:44,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:03:44,821 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:03:44,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:03:44,821 INFO L82 PathProgramCache]: Analyzing trace with hash -125182521, now seen corresponding path program 1 times [2020-09-25 01:03:44,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:03:44,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1638702779] [2020-09-25 01:03:44,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:03:44,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:03:44,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:03:45,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:03:45,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:03:45,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:03:46,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:03:46,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 01:03:46,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 01:03:46,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2086 [2020-09-25 01:03:46,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:03:46,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:03:46,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 01:03:46,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 01:03:46,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:03:47,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:03:47,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:03:47,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:03:47,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:03:47,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 01:03:47,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:03:47,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 01:03:47,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:03:47,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:03:47,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:03:47,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:03:47,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:03:47,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 01:03:47,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:03:47,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:03:47,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:03:47,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 01:03:47,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:03:47,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 01:03:47,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:03:47,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:03:47,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:03:47,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 01:03:47,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:03:47,206 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:03:47,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1638702779] [2020-09-25 01:03:47,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:03:47,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 01:03:47,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989586946] [2020-09-25 01:03:47,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:03:47,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:03:47,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:03:47,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:03:47,212 INFO L87 Difference]: Start difference. First operand 615 states and 751 transitions. Second operand 5 states. [2020-09-25 01:03:48,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:03:48,969 INFO L93 Difference]: Finished difference Result 1540 states and 1960 transitions. [2020-09-25 01:03:48,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 01:03:48,970 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-09-25 01:03:48,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:03:48,975 INFO L225 Difference]: With dead ends: 1540 [2020-09-25 01:03:48,976 INFO L226 Difference]: Without dead ends: 737 [2020-09-25 01:03:48,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:03:48,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2020-09-25 01:03:49,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 715. [2020-09-25 01:03:49,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 715 states. [2020-09-25 01:03:49,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 834 transitions. [2020-09-25 01:03:49,014 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 834 transitions. Word has length 141 [2020-09-25 01:03:49,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:03:49,015 INFO L479 AbstractCegarLoop]: Abstraction has 715 states and 834 transitions. [2020-09-25 01:03:49,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:03:49,015 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 834 transitions. [2020-09-25 01:03:49,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 01:03:49,026 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:03:49,027 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:03:49,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:03:49,027 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:03:49,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:03:49,028 INFO L82 PathProgramCache]: Analyzing trace with hash 809468999, now seen corresponding path program 1 times [2020-09-25 01:03:49,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:03:49,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414569618] [2020-09-25 01:03:49,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:03:49,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:03:49,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:03:49,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:03:49,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:03:49,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:03:50,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:03:51,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:03:51,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:03:53,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:03:53,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:03:54,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:03:54,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 01:03:54,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 01:03:54,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 01:03:54,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:03:54,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:03:54,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 01:03:54,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 01:03:54,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:03:54,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:03:54,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:03:54,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:03:54,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:03:54,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 01:03:54,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:03:54,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 01:03:54,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:03:54,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:03:54,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:03:54,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:03:54,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:03:54,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 01:03:54,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:03:54,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:03:54,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:03:54,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 01:03:54,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:03:54,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 01:03:54,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:03:54,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:03:54,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:03:54,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 01:03:54,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:03:54,351 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:03:54,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414569618] [2020-09-25 01:03:54,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:03:54,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 01:03:54,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598472032] [2020-09-25 01:03:54,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:03:54,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:03:54,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:03:54,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:03:54,355 INFO L87 Difference]: Start difference. First operand 715 states and 834 transitions. Second operand 5 states. [2020-09-25 01:03:56,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:03:56,225 INFO L93 Difference]: Finished difference Result 1990 states and 2374 transitions. [2020-09-25 01:03:56,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 01:03:56,226 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-09-25 01:03:56,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:03:56,235 INFO L225 Difference]: With dead ends: 1990 [2020-09-25 01:03:56,235 INFO L226 Difference]: Without dead ends: 1297 [2020-09-25 01:03:56,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:03:56,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2020-09-25 01:03:56,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 1250. [2020-09-25 01:03:56,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1250 states. [2020-09-25 01:03:56,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1466 transitions. [2020-09-25 01:03:56,289 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1466 transitions. Word has length 142 [2020-09-25 01:03:56,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:03:56,290 INFO L479 AbstractCegarLoop]: Abstraction has 1250 states and 1466 transitions. [2020-09-25 01:03:56,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:03:56,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1466 transitions. [2020-09-25 01:03:56,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-25 01:03:56,295 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:03:56,296 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:03:56,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:03:56,296 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:03:56,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:03:56,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1712229635, now seen corresponding path program 1 times [2020-09-25 01:03:56,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:03:56,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241100001] [2020-09-25 01:03:56,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:03:56,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:03:56,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:03:56,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:03:56,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 01:03:56,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:03:56,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-09-25 01:03:56,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:03:56,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:03:56,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 01:03:56,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 01:03:56,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:03:56,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:03:56,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:03:56,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:03:56,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:03:56,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 01:03:56,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:03:56,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 01:03:56,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:03:56,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:03:56,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:03:56,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 01:03:56,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:03:56,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 01:03:56,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:03:56,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:03:56,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:03:56,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 01:03:56,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:03:56,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 01:03:56,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:03:56,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:03:56,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 01:03:56,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 01:03:56,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:03:57,035 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:03:57,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241100001] [2020-09-25 01:03:57,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:03:57,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 01:03:57,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060917605] [2020-09-25 01:03:57,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 01:03:57,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:03:57,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 01:03:57,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 01:03:57,039 INFO L87 Difference]: Start difference. First operand 1250 states and 1466 transitions. Second operand 7 states. [2020-09-25 01:03:59,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:03:59,170 INFO L93 Difference]: Finished difference Result 3171 states and 3846 transitions. [2020-09-25 01:03:59,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 01:03:59,171 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 145 [2020-09-25 01:03:59,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:03:59,183 INFO L225 Difference]: With dead ends: 3171 [2020-09-25 01:03:59,183 INFO L226 Difference]: Without dead ends: 1943 [2020-09-25 01:03:59,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 01:03:59,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1943 states. [2020-09-25 01:03:59,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1943 to 1892. [2020-09-25 01:03:59,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1892 states. [2020-09-25 01:03:59,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1892 states to 1892 states and 2181 transitions. [2020-09-25 01:03:59,259 INFO L78 Accepts]: Start accepts. Automaton has 1892 states and 2181 transitions. Word has length 145 [2020-09-25 01:03:59,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:03:59,259 INFO L479 AbstractCegarLoop]: Abstraction has 1892 states and 2181 transitions. [2020-09-25 01:03:59,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 01:03:59,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1892 states and 2181 transitions. [2020-09-25 01:03:59,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 01:03:59,267 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:03:59,268 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:03:59,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 01:03:59,268 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:03:59,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:03:59,269 INFO L82 PathProgramCache]: Analyzing trace with hash -451289247, now seen corresponding path program 1 times [2020-09-25 01:03:59,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:03:59,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017395686] [2020-09-25 01:03:59,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:03:59,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:03:59,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:03:59,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:04:00,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:04:00,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 01:04:00,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:04:00,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 761 [2020-09-25 01:04:00,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:04:00,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:04:00,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 01:04:00,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 01:04:00,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:04:00,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:04:00,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:04:00,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:04:00,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:04:00,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 01:04:00,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:04:00,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 01:04:00,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:04:00,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:04:00,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:04:00,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:04:00,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:04:00,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 01:04:00,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:04:00,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:04:00,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:04:00,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 01:04:00,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:04:00,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 01:04:00,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:04:00,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:04:00,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:04:00,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 01:04:00,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:04:00,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 01:04:00,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:04:00,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:04:00,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:04:00,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 01:04:00,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:04:00,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 01:04:00,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:04:00,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:04:00,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 01:04:00,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 01:04:00,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:04:00,420 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 01:04:00,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017395686] [2020-09-25 01:04:00,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:04:00,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 01:04:00,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924622413] [2020-09-25 01:04:00,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 01:04:00,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:04:00,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 01:04:00,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 01:04:00,424 INFO L87 Difference]: Start difference. First operand 1892 states and 2181 transitions. Second operand 7 states. [2020-09-25 01:04:03,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:04:03,919 INFO L93 Difference]: Finished difference Result 5909 states and 6986 transitions. [2020-09-25 01:04:03,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 01:04:03,920 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 167 [2020-09-25 01:04:03,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:04:03,939 INFO L225 Difference]: With dead ends: 5909 [2020-09-25 01:04:03,939 INFO L226 Difference]: Without dead ends: 3860 [2020-09-25 01:04:03,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 01:04:03,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3860 states. [2020-09-25 01:04:04,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3860 to 3820. [2020-09-25 01:04:04,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3820 states. [2020-09-25 01:04:04,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3820 states to 3820 states and 4433 transitions. [2020-09-25 01:04:04,056 INFO L78 Accepts]: Start accepts. Automaton has 3820 states and 4433 transitions. Word has length 167 [2020-09-25 01:04:04,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:04:04,057 INFO L479 AbstractCegarLoop]: Abstraction has 3820 states and 4433 transitions. [2020-09-25 01:04:04,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 01:04:04,057 INFO L276 IsEmpty]: Start isEmpty. Operand 3820 states and 4433 transitions. [2020-09-25 01:04:04,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-09-25 01:04:04,067 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:04:04,068 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:04:04,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 01:04:04,070 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:04:04,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:04:04,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1180407542, now seen corresponding path program 1 times [2020-09-25 01:04:04,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:04:04,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179835779] [2020-09-25 01:04:04,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:04:04,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:04:04,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:04:04,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:04:04,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:04:04,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:04:09,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:04:09,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-09-25 01:04:09,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 01:04:09,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 01:04:09,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:04:09,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 01:04:09,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-09-25 01:04:09,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 01:04:09,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:04:09,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:04:09,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:04:09,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:04:09,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:04:09,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 01:04:09,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:04:09,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 01:04:09,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:04:09,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:04:09,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:04:09,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:04:09,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:04:09,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 01:04:09,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:04:09,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:04:09,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:04:09,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 01:04:09,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:04:09,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 01:04:09,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:04:09,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:04:09,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:04:09,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:04:09,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:04:09,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 01:04:09,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:04:09,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:04:09,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:04:09,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 01:04:09,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:04:09,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 01:04:09,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:04:09,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:04:09,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:04:09,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:04:09,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:04:09,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 01:04:09,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:04:09,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:04:09,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:04:09,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:04:09,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 01:04:09,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:04:09,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-09-25 01:04:09,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:04:09,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:04:09,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 01:04:09,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 01:04:09,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:04:10,082 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 75 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-09-25 01:04:10,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [179835779] [2020-09-25 01:04:10,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:04:10,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 01:04:10,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521714923] [2020-09-25 01:04:10,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 01:04:10,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:04:10,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 01:04:10,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-09-25 01:04:10,085 INFO L87 Difference]: Start difference. First operand 3820 states and 4433 transitions. Second operand 13 states. [2020-09-25 01:04:12,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:04:12,847 INFO L93 Difference]: Finished difference Result 8146 states and 9477 transitions. [2020-09-25 01:04:12,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 01:04:12,851 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 202 [2020-09-25 01:04:12,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:04:12,870 INFO L225 Difference]: With dead ends: 8146 [2020-09-25 01:04:12,871 INFO L226 Difference]: Without dead ends: 4173 [2020-09-25 01:04:12,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-09-25 01:04:12,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4173 states. [2020-09-25 01:04:12,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4173 to 4167. [2020-09-25 01:04:12,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4167 states. [2020-09-25 01:04:12,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4167 states to 4167 states and 4718 transitions. [2020-09-25 01:04:12,979 INFO L78 Accepts]: Start accepts. Automaton has 4167 states and 4718 transitions. Word has length 202 [2020-09-25 01:04:12,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:04:12,979 INFO L479 AbstractCegarLoop]: Abstraction has 4167 states and 4718 transitions. [2020-09-25 01:04:12,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 01:04:12,980 INFO L276 IsEmpty]: Start isEmpty. Operand 4167 states and 4718 transitions. [2020-09-25 01:04:12,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-09-25 01:04:12,991 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:04:12,991 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:04:12,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 01:04:12,991 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:04:12,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:04:12,992 INFO L82 PathProgramCache]: Analyzing trace with hash 76072862, now seen corresponding path program 1 times [2020-09-25 01:04:12,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:04:12,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881767740] [2020-09-25 01:04:12,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:04:13,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:04:13,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:04:13,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:04:13,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:04:13,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:04:13,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:04:17,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:04:18,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:04:18,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-09-25 01:04:18,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 01:04:18,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 01:04:18,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:04:18,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:04:18,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-09-25 01:04:18,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 01:04:18,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:04:18,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:04:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:04:18,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:04:18,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:04:18,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 01:04:18,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:04:18,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 01:04:18,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:04:18,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:04:18,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:04:18,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:04:18,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:04:18,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 01:04:18,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:04:18,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:04:18,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:04:18,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 01:04:18,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:04:18,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 01:04:18,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:04:18,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:04:18,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:04:18,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:04:18,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:04:18,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 01:04:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:04:18,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:04:18,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:04:18,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 01:04:18,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:04:18,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:04:18,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:04:18,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:04:18,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:04:18,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:04:18,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:04:18,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 01:04:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:04:18,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:04:18,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:04:18,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 01:04:18,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:04:18,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 01:04:18,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:04:18,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:04:18,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:04:18,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 01:04:18,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:04:18,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-09-25 01:04:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:04:18,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:04:18,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:04:18,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 01:04:18,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:04:18,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 01:04:18,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:04:18,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:04:18,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 01:04:18,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 01:04:18,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:04:18,436 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 120 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-25 01:04:18,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881767740] [2020-09-25 01:04:18,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:04:18,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 01:04:18,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535751213] [2020-09-25 01:04:18,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 01:04:18,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:04:18,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 01:04:18,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 01:04:18,438 INFO L87 Difference]: Start difference. First operand 4167 states and 4718 transitions. Second operand 8 states. [2020-09-25 01:04:21,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:04:21,512 INFO L93 Difference]: Finished difference Result 10159 states and 11760 transitions. [2020-09-25 01:04:21,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 01:04:21,513 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 206 [2020-09-25 01:04:21,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:04:21,539 INFO L225 Difference]: With dead ends: 10159 [2020-09-25 01:04:21,540 INFO L226 Difference]: Without dead ends: 6024 [2020-09-25 01:04:21,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 01:04:21,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6024 states. [2020-09-25 01:04:21,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6024 to 5979. [2020-09-25 01:04:21,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5979 states. [2020-09-25 01:04:21,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5979 states to 5979 states and 6703 transitions. [2020-09-25 01:04:21,705 INFO L78 Accepts]: Start accepts. Automaton has 5979 states and 6703 transitions. Word has length 206 [2020-09-25 01:04:21,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:04:21,706 INFO L479 AbstractCegarLoop]: Abstraction has 5979 states and 6703 transitions. [2020-09-25 01:04:21,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 01:04:21,706 INFO L276 IsEmpty]: Start isEmpty. Operand 5979 states and 6703 transitions. [2020-09-25 01:04:21,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-09-25 01:04:21,720 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:04:21,720 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:04:21,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 01:04:21,721 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:04:21,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:04:21,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1219149427, now seen corresponding path program 1 times [2020-09-25 01:04:21,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:04:21,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [96931146] [2020-09-25 01:04:21,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:04:21,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:04:21,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:04:22,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:04:22,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-09-25 01:04:22,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:04:22,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-09-25 01:04:22,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:04:22,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:04:22,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-09-25 01:04:22,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 01:04:22,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:04:22,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:04:22,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:04:22,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:04:22,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:04:22,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 01:04:22,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:04:22,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 01:04:22,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:04:22,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:04:22,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:04:22,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:04:22,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:04:22,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 01:04:22,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:04:22,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:04:22,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:04:22,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 01:04:22,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:04:22,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 01:04:22,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:04:22,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:04:22,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:04:22,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 01:04:22,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:04:22,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 01:04:22,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:04:22,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:04:22,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:04:22,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 01:04:22,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:04:22,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 01:04:22,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:04:22,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:04:22,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 01:04:22,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 01:04:22,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:04:22,540 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 01:04:22,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [96931146] [2020-09-25 01:04:22,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:04:22,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 01:04:22,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342632599] [2020-09-25 01:04:22,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 01:04:22,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:04:22,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 01:04:22,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 01:04:22,545 INFO L87 Difference]: Start difference. First operand 5979 states and 6703 transitions. Second operand 7 states.