/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --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_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:26:39,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:26:39,900 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:26:39,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:26:39,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:26:39,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:26:39,956 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:26:39,958 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:26:39,961 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:26:39,962 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:26:39,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:26:39,965 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:26:39,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:26:39,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:26:39,969 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:26:39,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:26:39,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:26:39,976 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:26:39,978 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:26:39,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:26:39,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:26:39,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:26:39,990 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:26:39,991 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:26:39,995 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:26:39,995 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:26:39,996 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:26:39,998 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:26:39,999 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:26:40,001 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:26:40,001 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:26:40,002 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:26:40,003 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:26:40,005 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:26:40,006 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:26:40,006 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:26:40,007 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:26:40,007 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:26:40,007 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:26:40,008 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:26:40,010 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:26:40,011 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 04:26:40,056 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:26:40,056 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:26:40,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:26:40,058 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:26:40,059 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:26:40,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:26:40,059 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:26:40,060 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:26:40,060 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:26:40,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:26:40,061 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:26:40,061 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:26:40,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:26:40,062 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:26:40,062 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:26:40,062 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:26:40,063 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:26:40,063 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:26:40,063 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:26:40,063 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:26:40,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:26:40,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:26:40,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:26:40,064 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:26:40,064 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:26:40,064 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:26:40,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:26:40,065 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:26:40,065 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:26:40,065 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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:26:40,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:26:40,517 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:26:40,523 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:26:40,525 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:26:40,526 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:26:40,527 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label09.c [2020-09-25 04:26:40,610 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb8b13833/548e73374a8140ca8c462241d7489676/FLAG430a5695e [2020-09-25 04:26:41,217 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:26:41,218 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label09.c [2020-09-25 04:26:41,231 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb8b13833/548e73374a8140ca8c462241d7489676/FLAG430a5695e [2020-09-25 04:26:41,467 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb8b13833/548e73374a8140ca8c462241d7489676 [2020-09-25 04:26:41,482 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:26:41,488 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:26:41,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:26:41,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:26:41,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:26:41,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:26:41" (1/1) ... [2020-09-25 04:26:41,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245d8fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:41, skipping insertion in model container [2020-09-25 04:26:41,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:26:41" (1/1) ... [2020-09-25 04:26:41,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:26:41,566 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:26:42,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:26:42,029 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:26:42,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:26:42,272 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:26:42,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:42 WrapperNode [2020-09-25 04:26:42,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:26:42,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:26:42,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:26:42,274 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:26:42,287 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:42" (1/1) ... [2020-09-25 04:26:42,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:42" (1/1) ... [2020-09-25 04:26:42,306 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:42" (1/1) ... [2020-09-25 04:26:42,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:42" (1/1) ... [2020-09-25 04:26:42,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:42" (1/1) ... [2020-09-25 04:26:42,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:42" (1/1) ... [2020-09-25 04:26:42,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:42" (1/1) ... [2020-09-25 04:26:42,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:26:42,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:26:42,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:26:42,374 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:26:42,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:42" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:26:42,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:26:42,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:26:42,455 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:26:42,455 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:26:42,455 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:26:42,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:26:42,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:26:42,456 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:26:42,456 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:26:42,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:26:42,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:26:43,758 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:26:43,759 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:26:43,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:26:43 BoogieIcfgContainer [2020-09-25 04:26:43,767 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:26:43,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:26:43,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:26:43,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:26:43,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:26:41" (1/3) ... [2020-09-25 04:26:43,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e80f973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:26:43, skipping insertion in model container [2020-09-25 04:26:43,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:26:42" (2/3) ... [2020-09-25 04:26:43,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e80f973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:26:43, skipping insertion in model container [2020-09-25 04:26:43,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:26:43" (3/3) ... [2020-09-25 04:26:43,777 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label09.c [2020-09-25 04:26:43,788 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:26:43,805 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:26:43,827 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:26:43,861 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:26:43,861 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:26:43,861 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:26:43,861 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:26:43,862 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:26:43,862 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:26:43,862 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:26:43,862 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:26:43,894 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 04:26:43,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 04:26:43,916 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:43,917 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] [2020-09-25 04:26:43,918 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:43,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:43,926 INFO L82 PathProgramCache]: Analyzing trace with hash -260189822, now seen corresponding path program 1 times [2020-09-25 04:26:43,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:43,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1652298201] [2020-09-25 04:26:43,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:44,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:44,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:44,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:45,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:45,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:46,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:47,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:47,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:48,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:48,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:48,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:49,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:49,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 04:26:49,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 04:26:49,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-09-25 04:26:49,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:49,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:49,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:26:49,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 04:26:49,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 04:26:49,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:26:49,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:49,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:49,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:49,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:49,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:26:49,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:49,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 04:26:49,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:49,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:49,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:49,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:49,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 04:26:49,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:49,482 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 04:26:49,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1652298201] [2020-09-25 04:26:49,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:26:49,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:26:49,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995670487] [2020-09-25 04:26:49,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:26:49,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:49,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:26:49,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:26:49,514 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 04:26:51,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:51,689 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 04:26:51,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:26:51,696 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2020-09-25 04:26:51,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:51,733 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 04:26:51,733 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 04:26:51,742 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 04:26:51,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 04:26:51,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 04:26:51,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 04:26:51,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 04:26:51,852 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 147 [2020-09-25 04:26:51,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:51,854 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 04:26:51,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:26:51,854 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 04:26:51,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 04:26:51,865 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:51,865 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:26:51,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:26:51,866 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:51,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:51,867 INFO L82 PathProgramCache]: Analyzing trace with hash 345157294, now seen corresponding path program 1 times [2020-09-25 04:26:51,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:51,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962092941] [2020-09-25 04:26:51,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:51,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:51,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:52,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:52,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:52,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:52,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:52,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:54,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:54,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:55,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:55,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:55,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:56,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:56,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 04:26:56,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 04:26:56,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 04:26:56,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:56,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:56,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:56,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 04:26:56,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 04:26:56,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:57,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:57,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:57,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:57,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:57,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:26:57,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:57,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:26:57,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:57,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:57,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:26:57,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:57,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:26:57,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:57,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:26:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:57,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:57,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:57,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:26:57,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:57,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 04:26:57,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:57,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:57,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:57,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:57,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 04:26:57,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:57,166 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:26:57,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962092941] [2020-09-25 04:26:57,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:26:57,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:26:57,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655813572] [2020-09-25 04:26:57,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:26:57,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:57,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:26:57,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:26:57,171 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 5 states. [2020-09-25 04:26:58,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:58,830 INFO L93 Difference]: Finished difference Result 1623 states and 2079 transitions. [2020-09-25 04:26:58,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:26:58,830 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-09-25 04:26:58,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:58,841 INFO L225 Difference]: With dead ends: 1623 [2020-09-25 04:26:58,841 INFO L226 Difference]: Without dead ends: 980 [2020-09-25 04:26:58,843 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 04:26:58,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2020-09-25 04:26:58,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 816. [2020-09-25 04:26:58,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 816 states. [2020-09-25 04:26:58,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1043 transitions. [2020-09-25 04:26:58,902 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1043 transitions. Word has length 165 [2020-09-25 04:26:58,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:58,904 INFO L479 AbstractCegarLoop]: Abstraction has 816 states and 1043 transitions. [2020-09-25 04:26:58,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:26:58,904 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1043 transitions. [2020-09-25 04:26:58,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 04:26:58,914 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:58,915 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 04:26:58,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:26:58,915 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:58,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:58,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1015227465, now seen corresponding path program 1 times [2020-09-25 04:26:58,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:58,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [165015079] [2020-09-25 04:26:58,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:58,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:59,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:59,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:00,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:02,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:02,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:02,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:03,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:03,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:03,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:03,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-25 04:27:03,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:27:03,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-09-25 04:27:03,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:03,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:03,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:03,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 04:27:03,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 04:27:03,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:04,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:04,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:04,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:04,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:04,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:04,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:04,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:27:04,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:04,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:04,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:04,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:04,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:04,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:04,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:27:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:04,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:04,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:04,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 04:27:04,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:04,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 04:27:04,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:04,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:04,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:04,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:04,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 04:27:04,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:04,216 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:27:04,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [165015079] [2020-09-25 04:27:04,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:27:04,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:27:04,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008549499] [2020-09-25 04:27:04,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:27:04,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:04,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:27:04,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:27:04,228 INFO L87 Difference]: Start difference. First operand 816 states and 1043 transitions. Second operand 5 states. [2020-09-25 04:27:05,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:05,928 INFO L93 Difference]: Finished difference Result 2075 states and 2796 transitions. [2020-09-25 04:27:05,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:27:05,929 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-09-25 04:27:05,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:05,941 INFO L225 Difference]: With dead ends: 2075 [2020-09-25 04:27:05,941 INFO L226 Difference]: Without dead ends: 1281 [2020-09-25 04:27:05,945 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 04:27:05,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2020-09-25 04:27:05,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1269. [2020-09-25 04:27:05,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1269 states. [2020-09-25 04:27:06,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1663 transitions. [2020-09-25 04:27:06,000 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1663 transitions. Word has length 173 [2020-09-25 04:27:06,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:06,010 INFO L479 AbstractCegarLoop]: Abstraction has 1269 states and 1663 transitions. [2020-09-25 04:27:06,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:27:06,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1663 transitions. [2020-09-25 04:27:06,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-09-25 04:27:06,019 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:06,019 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, 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] [2020-09-25 04:27:06,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:27:06,019 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:06,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:06,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1591889424, now seen corresponding path program 1 times [2020-09-25 04:27:06,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:06,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651729827] [2020-09-25 04:27:06,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:06,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:06,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:06,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:06,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:06,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:11,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:11,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-25 04:27:11,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:27:11,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:27:11,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:11,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:11,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:11,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 04:27:11,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 04:27:11,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:27:11,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:11,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:11,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:11,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:11,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:11,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:11,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:27:11,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:11,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:11,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:11,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:11,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:11,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:11,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:27:11,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:11,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:11,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:11,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 04:27:11,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:11,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 04:27:11,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:11,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:11,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:11,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:11,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 04:27:11,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:11,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 04:27:11,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:11,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:11,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:11,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 04:27:11,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:11,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 04:27:11,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:11,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:11,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:11,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:27:11,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 04:27:11,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:11,505 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:27:11,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651729827] [2020-09-25 04:27:11,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:27:11,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:27:11,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263606070] [2020-09-25 04:27:11,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:27:11,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:11,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:27:11,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:27:11,511 INFO L87 Difference]: Start difference. First operand 1269 states and 1663 transitions. Second operand 7 states. [2020-09-25 04:27:14,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:14,148 INFO L93 Difference]: Finished difference Result 3464 states and 4884 transitions. [2020-09-25 04:27:14,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:27:14,149 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 222 [2020-09-25 04:27:14,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:14,164 INFO L225 Difference]: With dead ends: 3464 [2020-09-25 04:27:14,164 INFO L226 Difference]: Without dead ends: 2217 [2020-09-25 04:27:14,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:27:14,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2217 states. [2020-09-25 04:27:14,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2217 to 1905. [2020-09-25 04:27:14,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1905 states. [2020-09-25 04:27:14,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 2390 transitions. [2020-09-25 04:27:14,261 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 2390 transitions. Word has length 222 [2020-09-25 04:27:14,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:14,262 INFO L479 AbstractCegarLoop]: Abstraction has 1905 states and 2390 transitions. [2020-09-25 04:27:14,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:27:14,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 2390 transitions. [2020-09-25 04:27:14,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-09-25 04:27:14,271 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:14,272 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:27:14,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:27:14,272 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:14,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:14,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1032028468, now seen corresponding path program 1 times [2020-09-25 04:27:14,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:14,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061965238] [2020-09-25 04:27:14,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:14,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:14,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:14,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:14,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:19,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:19,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-09-25 04:27:19,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:27:19,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-09-25 04:27:19,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:19,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:19,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:19,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-25 04:27:19,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 04:27:19,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:27:19,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:19,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:19,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:19,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:19,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:19,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:19,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:27:19,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:19,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:19,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:19,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:19,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:19,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:19,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:27:19,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:19,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:19,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:19,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:27:19,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:19,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 04:27:19,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:19,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:19,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:19,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:19,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 04:27:19,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:19,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 04:27:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:19,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:19,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:19,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 04:27:19,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:19,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 04:27:19,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:19,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:19,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:19,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:27:19,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 04:27:19,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:19,758 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:27:19,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061965238] [2020-09-25 04:27:19,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:27:19,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 04:27:19,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143360590] [2020-09-25 04:27:19,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:27:19,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:19,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:27:19,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:27:19,762 INFO L87 Difference]: Start difference. First operand 1905 states and 2390 transitions. Second operand 8 states. [2020-09-25 04:27:22,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:22,738 INFO L93 Difference]: Finished difference Result 4942 states and 6602 transitions. [2020-09-25 04:27:22,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 04:27:22,739 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 225 [2020-09-25 04:27:22,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:22,754 INFO L225 Difference]: With dead ends: 4942 [2020-09-25 04:27:22,754 INFO L226 Difference]: Without dead ends: 3069 [2020-09-25 04:27:22,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 04:27:22,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3069 states. [2020-09-25 04:27:22,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3069 to 2992. [2020-09-25 04:27:22,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2992 states. [2020-09-25 04:27:22,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2992 states to 2992 states and 3844 transitions. [2020-09-25 04:27:22,844 INFO L78 Accepts]: Start accepts. Automaton has 2992 states and 3844 transitions. Word has length 225 [2020-09-25 04:27:22,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:22,844 INFO L479 AbstractCegarLoop]: Abstraction has 2992 states and 3844 transitions. [2020-09-25 04:27:22,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:27:22,844 INFO L276 IsEmpty]: Start isEmpty. Operand 2992 states and 3844 transitions. [2020-09-25 04:27:22,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-09-25 04:27:22,858 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:22,858 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:27:22,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:27:22,859 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:22,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:22,859 INFO L82 PathProgramCache]: Analyzing trace with hash 553016873, now seen corresponding path program 1 times [2020-09-25 04:27:22,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:22,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82214705] [2020-09-25 04:27:22,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:22,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:22,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:22,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:23,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:23,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:23,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:24,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:25,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:25,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:25,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:26,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:27,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:27,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-09-25 04:27:27,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 04:27:27,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 04:27:27,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:27,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:27,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:27,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 04:27:27,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 04:27:27,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:27:27,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:27:27,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:27,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:27,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:27,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:27:27,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:27,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:27:27,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:27,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:27,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:27,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:27,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:27,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:27:28,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:27:28,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:28,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:28,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:28,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:27:28,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:28,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:27:28,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:28,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:28,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:27:28,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:27:28,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 04:27:28,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:27:28,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 04:27:28,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:28,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:28,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:28,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 04:27:28,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:28,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 04:27:28,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:28,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:28,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:27:28,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:27:28,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 04:27:28,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:27:28,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 04:27:28,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:28,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:28,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:27:28,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 04:27:28,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:27:28,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 04:27:28,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:27:28,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:27:28,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:27:28,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-25 04:27:28,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:27:28,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:27:28,261 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 97 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 04:27:28,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82214705] [2020-09-25 04:27:28,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:27:28,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:27:28,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344540619] [2020-09-25 04:27:28,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:27:28,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:27:28,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:27:28,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:27:28,264 INFO L87 Difference]: Start difference. First operand 2992 states and 3844 transitions. Second operand 7 states. [2020-09-25 04:27:30,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:27:30,356 INFO L93 Difference]: Finished difference Result 7018 states and 9402 transitions. [2020-09-25 04:27:30,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:27:30,357 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 248 [2020-09-25 04:27:30,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:27:30,382 INFO L225 Difference]: With dead ends: 7018 [2020-09-25 04:27:30,382 INFO L226 Difference]: Without dead ends: 4048 [2020-09-25 04:27:30,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:27:30,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4048 states. [2020-09-25 04:27:30,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4048 to 3918. [2020-09-25 04:27:30,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3918 states. [2020-09-25 04:27:30,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3918 states to 3918 states and 4930 transitions. [2020-09-25 04:27:30,496 INFO L78 Accepts]: Start accepts. Automaton has 3918 states and 4930 transitions. Word has length 248 [2020-09-25 04:27:30,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:27:30,497 INFO L479 AbstractCegarLoop]: Abstraction has 3918 states and 4930 transitions. [2020-09-25 04:27:30,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:27:30,497 INFO L276 IsEmpty]: Start isEmpty. Operand 3918 states and 4930 transitions. [2020-09-25 04:27:30,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-09-25 04:27:30,513 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:27:30,514 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:27:30,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:27:30,514 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:27:30,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:27:30,515 INFO L82 PathProgramCache]: Analyzing trace with hash 2102985712, now seen corresponding path program 1 times [2020-09-25 04:27:30,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:27:30,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383990102] [2020-09-25 04:27:30,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:27:30,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:27:30,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:27:30,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking...