/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/Problem10_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:29:57,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:29:57,239 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:29:57,285 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:29:57,286 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:29:57,295 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:29:57,297 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:29:57,301 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:29:57,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:29:57,307 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:29:57,308 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:29:57,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:29:57,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:29:57,313 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:29:57,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:29:57,318 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:29:57,320 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:29:57,321 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:29:57,323 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:29:57,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:29:57,334 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:29:57,335 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:29:57,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:29:57,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:29:57,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:29:57,350 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:29:57,350 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:29:57,357 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:29:57,357 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:29:57,358 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:29:57,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:29:57,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:29:57,366 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:29:57,367 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:29:57,368 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:29:57,369 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:29:57,370 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:29:57,373 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:29:57,373 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:29:57,374 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:29:57,375 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:29:57,377 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 04:29:57,424 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:29:57,424 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:29:57,426 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:29:57,427 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:29:57,427 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:29:57,427 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:29:57,428 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:29:57,428 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:29:57,428 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:29:57,428 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:29:57,429 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:29:57,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:29:57,430 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:29:57,430 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:29:57,431 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:29:57,431 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:29:57,431 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:29:57,431 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:29:57,431 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:29:57,432 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:29:57,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:29:57,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:29:57,432 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:29:57,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:29:57,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:29:57,433 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:29:57,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:29:57,433 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:29:57,434 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:29:57,434 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 04:29:57,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:29:57,930 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:29:57,935 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:29:57,937 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:29:57,937 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:29:57,938 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label21.c [2020-09-25 04:29:58,032 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c8ec68db/5a96c72985e84887b6b7e93477717b23/FLAG692c5c808 [2020-09-25 04:29:58,743 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:29:58,744 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label21.c [2020-09-25 04:29:58,767 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c8ec68db/5a96c72985e84887b6b7e93477717b23/FLAG692c5c808 [2020-09-25 04:29:58,947 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c8ec68db/5a96c72985e84887b6b7e93477717b23 [2020-09-25 04:29:58,960 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:29:58,965 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:29:58,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:29:58,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:29:58,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:29:58,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:29:58" (1/1) ... [2020-09-25 04:29:58,977 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72eb96f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:58, skipping insertion in model container [2020-09-25 04:29:58,977 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:29:58" (1/1) ... [2020-09-25 04:29:58,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:29:59,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:29:59,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:29:59,657 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:29:59,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:29:59,825 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:29:59,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:59 WrapperNode [2020-09-25 04:29:59,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:29:59,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:29:59,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:29:59,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:29:59,845 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:59" (1/1) ... [2020-09-25 04:29:59,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:59" (1/1) ... [2020-09-25 04:29:59,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:59" (1/1) ... [2020-09-25 04:29:59,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:59" (1/1) ... [2020-09-25 04:29:59,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:59" (1/1) ... [2020-09-25 04:29:59,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:59" (1/1) ... [2020-09-25 04:29:59,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:59" (1/1) ... [2020-09-25 04:29:59,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:29:59,967 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:29:59,967 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:29:59,967 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:29:59,969 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:59" (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 04:30:00,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:30:00,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:30:00,069 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:30:00,069 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:30:00,070 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:30:00,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:30:00,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:30:00,070 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:30:00,070 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:30:00,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:30:00,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:30:01,439 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:30:01,440 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:30:01,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:30:01 BoogieIcfgContainer [2020-09-25 04:30:01,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:30:01,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:30:01,451 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:30:01,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:30:01,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:29:58" (1/3) ... [2020-09-25 04:30:01,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760b7f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:30:01, skipping insertion in model container [2020-09-25 04:30:01,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:29:59" (2/3) ... [2020-09-25 04:30:01,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760b7f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:30:01, skipping insertion in model container [2020-09-25 04:30:01,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:30:01" (3/3) ... [2020-09-25 04:30:01,461 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label21.c [2020-09-25 04:30:01,474 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:30:01,488 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:30:01,515 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:30:01,558 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:30:01,558 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:30:01,558 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:30:01,558 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:30:01,558 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:30:01,559 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:30:01,559 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:30:01,559 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:30:01,595 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 04:30:01,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 04:30:01,607 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:01,608 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] [2020-09-25 04:30:01,609 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:01,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:01,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1065442889, now seen corresponding path program 1 times [2020-09-25 04:30:01,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:01,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155607618] [2020-09-25 04:30:01,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:01,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:01,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:02,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:02,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:02,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 04:30:02,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:30:02,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1017 [2020-09-25 04:30:02,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:02,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:02,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:30:02,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:30:02,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 04:30:02,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:30:02,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:02,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:02,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:02,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:02,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:02,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:02,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 04:30:02,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:02,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:02,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:02,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:02,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:30:02,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:03,018 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 04:30:03,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155607618] [2020-09-25 04:30:03,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:30:03,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:30:03,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552702355] [2020-09-25 04:30:03,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:30:03,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:03,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:30:03,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:30:03,051 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 04:30:05,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:05,359 INFO L93 Difference]: Finished difference Result 1160 states and 1585 transitions. [2020-09-25 04:30:05,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:30:05,361 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-09-25 04:30:05,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:05,385 INFO L225 Difference]: With dead ends: 1160 [2020-09-25 04:30:05,385 INFO L226 Difference]: Without dead ends: 631 [2020-09-25 04:30:05,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:30:05,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-09-25 04:30:05,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 576. [2020-09-25 04:30:05,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-25 04:30:05,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-25 04:30:05,508 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 46 [2020-09-25 04:30:05,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:05,509 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-25 04:30:05,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:30:05,510 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-25 04:30:05,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 04:30:05,518 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:05,519 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:05,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:30:05,519 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:05,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:05,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1435399792, now seen corresponding path program 1 times [2020-09-25 04:30:05,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:05,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132979580] [2020-09-25 04:30:05,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:05,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:05,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:05,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:05,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:06,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:07,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:08,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:08,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:09,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:09,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:10,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:10,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 04:30:10,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:30:10,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 04:30:10,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:10,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:10,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:10,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-09-25 04:30:10,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 04:30:10,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:10,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:10,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:10,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:10,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:10,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:10,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:10,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:30:10,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:10,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:10,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:10,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:10,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:10,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:10,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:10,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:10,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:10,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 04:30:10,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:10,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-25 04:30:10,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:10,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:10,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:10,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:10,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 04:30:10,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:10,946 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:30:10,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132979580] [2020-09-25 04:30:10,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:10,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:30:10,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364213629] [2020-09-25 04:30:10,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:30:10,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:10,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:30:10,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:30:10,952 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 5 states. [2020-09-25 04:30:13,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:13,439 INFO L93 Difference]: Finished difference Result 1375 states and 1726 transitions. [2020-09-25 04:30:13,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:30:13,440 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-09-25 04:30:13,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:13,447 INFO L225 Difference]: With dead ends: 1375 [2020-09-25 04:30:13,448 INFO L226 Difference]: Without dead ends: 814 [2020-09-25 04:30:13,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:30:13,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2020-09-25 04:30:13,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 576. [2020-09-25 04:30:13,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-25 04:30:13,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-25 04:30:13,485 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 129 [2020-09-25 04:30:13,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:13,486 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-25 04:30:13,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:30:13,486 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-25 04:30:13,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 04:30:13,489 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:13,489 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:13,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:30:13,490 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:13,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:13,490 INFO L82 PathProgramCache]: Analyzing trace with hash 677426997, now seen corresponding path program 1 times [2020-09-25 04:30:13,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:13,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [152917934] [2020-09-25 04:30:13,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:13,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:13,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:13,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:14,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:14,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:14,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:14,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:15,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:15,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:15,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 04:30:15,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:30:15,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2285 [2020-09-25 04:30:15,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:15,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:15,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:15,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-09-25 04:30:15,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 04:30:15,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:15,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:15,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:15,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:15,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:15,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:15,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:15,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:30:15,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:15,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:15,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:15,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:15,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:15,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:30:15,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:15,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:16,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:16,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 04:30:16,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:16,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-25 04:30:16,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:16,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:16,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:16,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:16,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 04:30:16,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:16,140 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:30:16,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [152917934] [2020-09-25 04:30:16,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:16,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:30:16,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939113270] [2020-09-25 04:30:16,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:30:16,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:16,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:30:16,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:30:16,145 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 5 states. [2020-09-25 04:30:17,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:17,840 INFO L93 Difference]: Finished difference Result 1451 states and 1871 transitions. [2020-09-25 04:30:17,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:30:17,840 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-09-25 04:30:17,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:17,847 INFO L225 Difference]: With dead ends: 1451 [2020-09-25 04:30:17,847 INFO L226 Difference]: Without dead ends: 890 [2020-09-25 04:30:17,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:30:17,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2020-09-25 04:30:17,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 880. [2020-09-25 04:30:17,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2020-09-25 04:30:17,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1113 transitions. [2020-09-25 04:30:17,882 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1113 transitions. Word has length 129 [2020-09-25 04:30:17,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:17,882 INFO L479 AbstractCegarLoop]: Abstraction has 880 states and 1113 transitions. [2020-09-25 04:30:17,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:30:17,883 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1113 transitions. [2020-09-25 04:30:17,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 04:30:17,889 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:17,889 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:17,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:30:17,890 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:17,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:17,890 INFO L82 PathProgramCache]: Analyzing trace with hash 2104953989, now seen corresponding path program 1 times [2020-09-25 04:30:17,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:17,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480130033] [2020-09-25 04:30:17,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:17,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:17,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:18,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:18,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:18,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:18,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:19,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:20,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:20,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:22,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:22,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 04:30:22,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:30:22,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4694 [2020-09-25 04:30:22,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:22,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:22,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:22,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 04:30:22,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 04:30:22,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:22,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:22,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:22,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:22,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:22,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:22,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:22,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 04:30:22,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:22,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:22,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:22,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:22,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:22,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:30:22,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:22,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:22,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:22,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:22,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 04:30:22,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:22,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 04:30:22,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:22,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:22,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:22,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:22,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 04:30:22,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:30:22,975 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:30:22,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480130033] [2020-09-25 04:30:22,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:22,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:30:22,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776507026] [2020-09-25 04:30:22,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:30:22,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:22,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:30:22,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:30:22,982 INFO L87 Difference]: Start difference. First operand 880 states and 1113 transitions. Second operand 5 states. [2020-09-25 04:30:24,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:24,901 INFO L93 Difference]: Finished difference Result 2371 states and 3109 transitions. [2020-09-25 04:30:24,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:30:24,901 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-09-25 04:30:24,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:24,917 INFO L225 Difference]: With dead ends: 2371 [2020-09-25 04:30:24,918 INFO L226 Difference]: Without dead ends: 1506 [2020-09-25 04:30:24,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:30:24,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2020-09-25 04:30:24,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1486. [2020-09-25 04:30:24,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1486 states. [2020-09-25 04:30:24,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 1948 transitions. [2020-09-25 04:30:24,996 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 1948 transitions. Word has length 135 [2020-09-25 04:30:24,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:24,996 INFO L479 AbstractCegarLoop]: Abstraction has 1486 states and 1948 transitions. [2020-09-25 04:30:24,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:30:24,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 1948 transitions. [2020-09-25 04:30:25,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 04:30:25,002 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:25,002 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:25,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:30:25,003 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:25,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:25,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1743030617, now seen corresponding path program 1 times [2020-09-25 04:30:25,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:25,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341173850] [2020-09-25 04:30:25,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:25,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:25,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:25,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:25,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:25,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:25,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:29,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:29,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 04:30:29,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:30:29,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4545 [2020-09-25 04:30:29,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:29,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:29,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:29,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 137 [2020-09-25 04:30:29,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 04:30:29,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:29,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:29,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:29,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:29,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:29,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:29,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:29,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:30:29,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:29,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:29,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:29,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:29,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:29,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:29,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:29,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:29,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:29,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 04:30:29,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:29,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-25 04:30:29,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:29,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:29,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:29,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:29,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 04:30:29,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:29,925 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:30:29,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341173850] [2020-09-25 04:30:29,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:29,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:30:29,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165190715] [2020-09-25 04:30:29,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:30:29,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:29,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:30:29,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:30:29,936 INFO L87 Difference]: Start difference. First operand 1486 states and 1948 transitions. Second operand 5 states. [2020-09-25 04:30:32,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:32,048 INFO L93 Difference]: Finished difference Result 3437 states and 4640 transitions. [2020-09-25 04:30:32,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:30:32,049 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-09-25 04:30:32,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:32,069 INFO L225 Difference]: With dead ends: 3437 [2020-09-25 04:30:32,070 INFO L226 Difference]: Without dead ends: 2116 [2020-09-25 04:30:32,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:30:32,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2116 states. [2020-09-25 04:30:32,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2116 to 1947. [2020-09-25 04:30:32,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1947 states. [2020-09-25 04:30:32,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1947 states to 1947 states and 2547 transitions. [2020-09-25 04:30:32,162 INFO L78 Accepts]: Start accepts. Automaton has 1947 states and 2547 transitions. Word has length 168 [2020-09-25 04:30:32,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:32,163 INFO L479 AbstractCegarLoop]: Abstraction has 1947 states and 2547 transitions. [2020-09-25 04:30:32,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:30:32,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1947 states and 2547 transitions. [2020-09-25 04:30:32,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 04:30:32,167 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:32,168 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:32,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:30:32,168 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:32,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:32,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1615501736, now seen corresponding path program 1 times [2020-09-25 04:30:32,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:32,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881158370] [2020-09-25 04:30:32,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:32,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:32,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:32,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:33,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:33,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:35,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:35,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-25 04:30:35,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:30:35,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3653 [2020-09-25 04:30:35,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:35,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:35,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:35,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 144 [2020-09-25 04:30:35,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 04:30:35,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:30:35,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:35,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:35,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:35,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:35,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:35,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:35,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:30:35,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:35,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:35,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:35,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:35,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:35,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:35,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:36,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:36,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:36,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-25 04:30:36,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:36,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-25 04:30:36,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:36,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:36,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:36,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:36,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-09-25 04:30:36,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:36,171 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:30:36,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881158370] [2020-09-25 04:30:36,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:36,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:30:36,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066015449] [2020-09-25 04:30:36,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:30:36,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:36,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:30:36,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:30:36,175 INFO L87 Difference]: Start difference. First operand 1947 states and 2547 transitions. Second operand 5 states. [2020-09-25 04:30:38,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:38,061 INFO L93 Difference]: Finished difference Result 4337 states and 5780 transitions. [2020-09-25 04:30:38,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:30:38,062 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-09-25 04:30:38,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:38,072 INFO L225 Difference]: With dead ends: 4337 [2020-09-25 04:30:38,073 INFO L226 Difference]: Without dead ends: 1907 [2020-09-25 04:30:38,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:30:38,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1907 states. [2020-09-25 04:30:38,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1907 to 1907. [2020-09-25 04:30:38,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1907 states. [2020-09-25 04:30:38,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 2432 transitions. [2020-09-25 04:30:38,139 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 2432 transitions. Word has length 173 [2020-09-25 04:30:38,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:38,139 INFO L479 AbstractCegarLoop]: Abstraction has 1907 states and 2432 transitions. [2020-09-25 04:30:38,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:30:38,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 2432 transitions. [2020-09-25 04:30:38,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-09-25 04:30:38,147 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:38,147 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:38,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:30:38,148 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:38,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:38,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1077619407, now seen corresponding path program 1 times [2020-09-25 04:30:38,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:38,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694149527] [2020-09-25 04:30:38,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:38,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:38,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:38,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:38,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:39,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:41,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:41,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:43,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:43,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:43,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:43,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-09-25 04:30:43,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:30:43,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5078 [2020-09-25 04:30:43,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:43,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:43,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:43,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-09-25 04:30:43,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 04:30:43,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:43,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:43,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:43,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:43,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:43,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:43,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:43,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:30:43,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:43,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:43,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:43,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:43,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:43,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:30:43,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:43,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:43,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:43,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:43,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 04:30:43,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:43,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 04:30:43,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:43,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:43,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:43,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:43,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 04:30:43,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:30:43,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 04:30:43,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:43,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:43,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:43,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 04:30:43,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:43,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 04:30:43,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:43,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:43,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:43,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:30:43,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 04:30:43,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:43,671 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:30:43,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694149527] [2020-09-25 04:30:43,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:43,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:30:43,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759530871] [2020-09-25 04:30:43,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:30:43,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:43,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:30:43,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:30:43,674 INFO L87 Difference]: Start difference. First operand 1907 states and 2432 transitions. Second operand 7 states. [2020-09-25 04:30:45,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:45,853 INFO L93 Difference]: Finished difference Result 3703 states and 4755 transitions. [2020-09-25 04:30:45,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:30:45,854 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 220 [2020-09-25 04:30:45,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:45,865 INFO L225 Difference]: With dead ends: 3703 [2020-09-25 04:30:45,865 INFO L226 Difference]: Without dead ends: 1961 [2020-09-25 04:30:45,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:30:45,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1961 states. [2020-09-25 04:30:45,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1961 to 1927. [2020-09-25 04:30:45,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1927 states. [2020-09-25 04:30:45,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1927 states to 1927 states and 2267 transitions. [2020-09-25 04:30:45,924 INFO L78 Accepts]: Start accepts. Automaton has 1927 states and 2267 transitions. Word has length 220 [2020-09-25 04:30:45,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:45,925 INFO L479 AbstractCegarLoop]: Abstraction has 1927 states and 2267 transitions. [2020-09-25 04:30:45,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:30:45,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1927 states and 2267 transitions. [2020-09-25 04:30:45,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-09-25 04:30:45,931 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:45,932 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:45,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 04:30:45,932 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:45,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:45,933 INFO L82 PathProgramCache]: Analyzing trace with hash -326642384, now seen corresponding path program 1 times [2020-09-25 04:30:45,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:45,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906259183] [2020-09-25 04:30:45,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:45,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:46,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:46,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:46,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:46,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:47,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking...