/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --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/Problem01_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:37:27,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:37:27,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:37:27,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:37:27,309 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:37:27,317 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:37:27,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:37:27,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:37:27,327 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:37:27,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:37:27,332 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:37:27,333 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:37:27,333 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:37:27,337 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:37:27,340 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:37:27,342 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:37:27,344 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:37:27,345 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:37:27,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:37:27,358 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:37:27,360 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:37:27,362 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:37:27,363 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:37:27,364 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:37:27,376 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:37:27,377 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:37:27,377 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:37:27,383 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:37:27,384 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:37:27,388 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:37:27,388 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:37:27,389 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:37:27,390 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:37:27,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:37:27,395 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:37:27,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:37:27,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:37:27,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:37:27,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:37:27,398 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:37:27,399 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:37:27,400 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 14:37:27,449 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:37:27,450 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:37:27,452 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:37:27,453 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:37:27,453 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:37:27,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:37:27,453 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:37:27,454 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:37:27,454 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:37:27,454 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:37:27,455 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:37:27,455 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:37:27,456 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:37:27,456 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:37:27,456 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:37:27,457 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:37:27,457 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:37:27,457 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:37:27,457 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:37:27,458 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:37:27,458 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:37:27,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:37:27,458 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:37:27,458 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:37:27,459 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:37:27,459 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:37:27,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:37:27,459 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:37:27,459 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:37:27,460 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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:37:27,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:37:27,970 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:37:27,975 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:37:27,977 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:37:27,978 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:37:27,979 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label42.c [2020-09-25 14:37:28,069 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5f6e9901/cf0b0c98f59d4cf3b24a5e625556b4ba/FLAG28e9d5b1c [2020-09-25 14:37:28,699 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:37:28,700 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label42.c [2020-09-25 14:37:28,713 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5f6e9901/cf0b0c98f59d4cf3b24a5e625556b4ba/FLAG28e9d5b1c [2020-09-25 14:37:28,942 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5f6e9901/cf0b0c98f59d4cf3b24a5e625556b4ba [2020-09-25 14:37:28,957 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:37:28,963 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:37:28,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:37:28,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:37:28,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:37:28,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:37:28" (1/1) ... [2020-09-25 14:37:28,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5783693b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:28, skipping insertion in model container [2020-09-25 14:37:28,975 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:37:28" (1/1) ... [2020-09-25 14:37:28,984 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:37:29,050 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:37:29,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:37:29,563 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:37:29,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:37:29,876 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:37:29,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:29 WrapperNode [2020-09-25 14:37:29,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:37:29,880 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:37:29,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:37:29,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:37:29,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:29" (1/1) ... [2020-09-25 14:37:29,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:29" (1/1) ... [2020-09-25 14:37:29,921 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:29" (1/1) ... [2020-09-25 14:37:29,922 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:29" (1/1) ... [2020-09-25 14:37:29,964 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:29" (1/1) ... [2020-09-25 14:37:29,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:29" (1/1) ... [2020-09-25 14:37:30,005 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:29" (1/1) ... [2020-09-25 14:37:30,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:37:30,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:37:30,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:37:30,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:37:30,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:29" (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 14:37:30,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:37:30,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:37:30,125 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:37:30,125 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:37:30,125 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:37:30,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:37:30,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:37:30,126 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:37:30,126 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:37:30,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:37:30,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:37:31,459 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:37:31,460 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:37:31,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:37:31 BoogieIcfgContainer [2020-09-25 14:37:31,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:37:31,471 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:37:31,471 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:37:31,475 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:37:31,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:37:28" (1/3) ... [2020-09-25 14:37:31,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@501e69ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:37:31, skipping insertion in model container [2020-09-25 14:37:31,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:29" (2/3) ... [2020-09-25 14:37:31,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@501e69ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:37:31, skipping insertion in model container [2020-09-25 14:37:31,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:37:31" (3/3) ... [2020-09-25 14:37:31,480 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label42.c [2020-09-25 14:37:31,492 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:37:31,504 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:37:31,527 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:37:31,563 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:37:31,563 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:37:31,563 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:37:31,564 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:37:31,564 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:37:31,564 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:37:31,564 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:37:31,564 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:37:31,598 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 14:37:31,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 14:37:31,621 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:31,622 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] [2020-09-25 14:37:31,623 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:31,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:31,631 INFO L82 PathProgramCache]: Analyzing trace with hash 907543029, now seen corresponding path program 1 times [2020-09-25 14:37:31,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:31,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485969589] [2020-09-25 14:37:31,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:32,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:32,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:32,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:33,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:36,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:36,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 14:37:36,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:37:36,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:37:36,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:36,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:36,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:37:36,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 14:37:36,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 14:37:36,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:37:37,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:37,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:37,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:37,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:37,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:37,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:37,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 14:37:37,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:37,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:37,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:37,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:37,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:37:37,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:37:37,431 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 14:37:37,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485969589] [2020-09-25 14:37:37,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:37:37,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:37:37,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215803120] [2020-09-25 14:37:37,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:37:37,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:37,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:37:37,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:37:37,469 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 14:37:39,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:39,781 INFO L93 Difference]: Finished difference Result 1235 states and 1633 transitions. [2020-09-25 14:37:39,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:37:39,784 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-25 14:37:39,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:39,820 INFO L225 Difference]: With dead ends: 1235 [2020-09-25 14:37:39,820 INFO L226 Difference]: Without dead ends: 661 [2020-09-25 14:37:39,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 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 14:37:39,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2020-09-25 14:37:39,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 605. [2020-09-25 14:37:39,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2020-09-25 14:37:39,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 715 transitions. [2020-09-25 14:37:39,974 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 715 transitions. Word has length 143 [2020-09-25 14:37:39,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:39,975 INFO L479 AbstractCegarLoop]: Abstraction has 605 states and 715 transitions. [2020-09-25 14:37:39,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:37:39,976 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 715 transitions. [2020-09-25 14:37:39,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 14:37:39,986 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:39,987 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] [2020-09-25 14:37:39,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:37:39,987 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:39,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:39,988 INFO L82 PathProgramCache]: Analyzing trace with hash 201587256, now seen corresponding path program 1 times [2020-09-25 14:37:39,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:39,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351460934] [2020-09-25 14:37:39,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:40,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:40,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:40,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:40,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:40,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:43,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:43,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:44,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:45,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:45,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 14:37:45,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:37:45,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 14:37:45,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:45,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:45,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:45,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 14:37:45,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 14:37:45,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:45,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:45,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:45,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:45,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:45,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:45,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:45,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:37:45,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:45,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:45,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:45,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:45,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:45,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:45,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:45,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:45,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:45,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:45,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:37:45,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:45,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:37:45,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:45,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:45,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:45,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:45,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 14:37:45,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:45,279 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 14:37:45,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351460934] [2020-09-25 14:37:45,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:45,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:37:45,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819745609] [2020-09-25 14:37:45,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:37:45,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:45,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:37:45,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:37:45,283 INFO L87 Difference]: Start difference. First operand 605 states and 715 transitions. Second operand 5 states. [2020-09-25 14:37:47,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:47,031 INFO L93 Difference]: Finished difference Result 1505 states and 1856 transitions. [2020-09-25 14:37:47,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:37:47,032 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-09-25 14:37:47,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:47,038 INFO L225 Difference]: With dead ends: 1505 [2020-09-25 14:37:47,038 INFO L226 Difference]: Without dead ends: 924 [2020-09-25 14:37:47,041 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 14:37:47,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2020-09-25 14:37:47,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 891. [2020-09-25 14:37:47,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-09-25 14:37:47,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1084 transitions. [2020-09-25 14:37:47,077 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1084 transitions. Word has length 160 [2020-09-25 14:37:47,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:47,078 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1084 transitions. [2020-09-25 14:37:47,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:37:47,078 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1084 transitions. [2020-09-25 14:37:47,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-25 14:37:47,085 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:47,085 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:37:47,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:37:47,086 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:47,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:47,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1554589942, now seen corresponding path program 1 times [2020-09-25 14:37:47,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:47,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326653759] [2020-09-25 14:37:47,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:47,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:47,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:47,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:47,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:47,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:47,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:49,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:52,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:52,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-25 14:37:52,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:37:52,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 14:37:52,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:52,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:52,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:52,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 14:37:52,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 14:37:52,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 14:37:52,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:52,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:52,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:52,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:52,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:52,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:52,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:37:52,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:52,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:52,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:52,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:52,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:52,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:52,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:52,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:52,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:52,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:52,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:37:52,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:52,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 14:37:52,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:52,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:52,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:52,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:52,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:37:52,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:52,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 14:37:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:52,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:52,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:52,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 14:37:52,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:52,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 14:37:52,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:52,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:52,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:52,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:37:52,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 14:37:52,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:52,558 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:37:52,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326653759] [2020-09-25 14:37:52,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:52,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:37:52,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045280665] [2020-09-25 14:37:52,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:37:52,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:52,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:37:52,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:37:52,561 INFO L87 Difference]: Start difference. First operand 891 states and 1084 transitions. Second operand 7 states. [2020-09-25 14:37:54,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:54,941 INFO L93 Difference]: Finished difference Result 2144 states and 2702 transitions. [2020-09-25 14:37:54,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:37:54,941 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 205 [2020-09-25 14:37:54,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:54,950 INFO L225 Difference]: With dead ends: 2144 [2020-09-25 14:37:54,951 INFO L226 Difference]: Without dead ends: 1277 [2020-09-25 14:37:54,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 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 14:37:54,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2020-09-25 14:37:54,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1077. [2020-09-25 14:37:54,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1077 states. [2020-09-25 14:37:54,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1328 transitions. [2020-09-25 14:37:54,996 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1328 transitions. Word has length 205 [2020-09-25 14:37:54,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:54,996 INFO L479 AbstractCegarLoop]: Abstraction has 1077 states and 1328 transitions. [2020-09-25 14:37:54,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:37:54,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1328 transitions. [2020-09-25 14:37:55,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 14:37:55,003 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:55,003 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:37:55,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:37:55,004 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:55,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:55,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1933456907, now seen corresponding path program 1 times [2020-09-25 14:37:55,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:55,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042716680] [2020-09-25 14:37:55,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:55,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:55,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:55,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:55,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:56,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:56,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:58,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:59,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:59,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:59,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:59,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:59,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:00,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:00,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-09-25 14:38:00,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 14:38:00,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 14:38:00,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:00,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:00,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 14:38:00,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 14:38:00,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 14:38:00,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:38:00,602 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2020-09-25 14:38:00,828 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 46 [2020-09-25 14:38:01,075 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 49 [2020-09-25 14:38:01,306 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 46 [2020-09-25 14:38:01,519 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 42 [2020-09-25 14:38:01,716 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 39 [2020-09-25 14:38:01,894 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 34 [2020-09-25 14:38:01,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:01,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:01,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:01,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:01,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:38:01,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:01,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 14:38:01,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:01,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:01,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:01,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:01,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 14:38:01,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:38:02,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:38:02,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:02,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:02,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:02,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:02,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 14:38:02,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:38:02,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 14:38:02,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:02,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:02,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:38:02,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:02,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 14:38:02,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:02,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 14:38:02,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:02,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:02,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:02,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 14:38:02,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:02,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 14:38:02,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:02,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:02,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:38:02,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:38:02,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 14:38:02,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:02,653 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 40 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:38:02,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042716680] [2020-09-25 14:38:02,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:38:02,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-25 14:38:02,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256185628] [2020-09-25 14:38:02,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-25 14:38:02,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:02,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-25 14:38:02,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2020-09-25 14:38:02,656 INFO L87 Difference]: Start difference. First operand 1077 states and 1328 transitions. Second operand 22 states. [2020-09-25 14:38:07,264 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-09-25 14:38:07,573 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-09-25 14:38:08,727 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 113 [2020-09-25 14:38:09,359 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 110 [2020-09-25 14:38:10,354 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 107 [2020-09-25 14:38:10,803 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 104 [2020-09-25 14:38:11,877 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 99 [2020-09-25 14:38:13,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:13,834 INFO L93 Difference]: Finished difference Result 3182 states and 4105 transitions. [2020-09-25 14:38:13,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-09-25 14:38:13,835 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 212 [2020-09-25 14:38:13,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:13,855 INFO L225 Difference]: With dead ends: 3182 [2020-09-25 14:38:13,855 INFO L226 Difference]: Without dead ends: 2129 [2020-09-25 14:38:13,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=663, Invalid=1787, Unknown=0, NotChecked=0, Total=2450 [2020-09-25 14:38:13,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2129 states. [2020-09-25 14:38:13,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2129 to 1615. [2020-09-25 14:38:13,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1615 states. [2020-09-25 14:38:13,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 1886 transitions. [2020-09-25 14:38:13,946 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 1886 transitions. Word has length 212 [2020-09-25 14:38:13,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:13,951 INFO L479 AbstractCegarLoop]: Abstraction has 1615 states and 1886 transitions. [2020-09-25 14:38:13,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-25 14:38:13,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 1886 transitions. [2020-09-25 14:38:13,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-09-25 14:38:13,964 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:13,964 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:38:13,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:38:13,965 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:13,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:13,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1545156718, now seen corresponding path program 1 times [2020-09-25 14:38:13,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:13,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842100383] [2020-09-25 14:38:13,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:14,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:14,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:14,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:14,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:14,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:14,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:14,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:15,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:15,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:15,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:19,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:19,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-09-25 14:38:19,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 14:38:19,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 14:38:19,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:19,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:19,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:38:19,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-09-25 14:38:19,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 14:38:19,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1