/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_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:30:32,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:30:32,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:30:32,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:30:32,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:30:32,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:30:32,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:30:32,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:30:32,477 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:30:32,481 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:30:32,482 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:30:32,483 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:30:32,484 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:30:32,487 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:30:32,490 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:30:32,492 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:30:32,494 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:30:32,495 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:30:32,497 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:30:32,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:30:32,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:30:32,511 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:30:32,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:30:32,513 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:30:32,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:30:32,517 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:30:32,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:30:32,521 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:30:32,522 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:30:32,524 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:30:32,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:30:32,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:30:32,526 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:30:32,527 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:30:32,529 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:30:32,529 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:30:32,530 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:30:32,530 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:30:32,531 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:30:32,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:30:32,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:30:32,534 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 04:30:32,586 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:30:32,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:30:32,589 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:30:32,589 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:30:32,589 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:30:32,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:30:32,590 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:30:32,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:30:32,590 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:30:32,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:30:32,592 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:30:32,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:30:32,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:30:32,593 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:30:32,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:30:32,593 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:30:32,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:30:32,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:30:32,594 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:30:32,594 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:30:32,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:30:32,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:30:32,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:30:32,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:30:32,595 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:30:32,595 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:30:32,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:30:32,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:30:32,596 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:30:32,596 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 04:30:33,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:30:33,099 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:30:33,106 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:30:33,109 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:30:33,109 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:30:33,111 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label37.c [2020-09-25 04:30:33,204 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/98d1aecb4/59ed3caa65e2408eb30a34cc3b7d370d/FLAG3720053a8 [2020-09-25 04:30:33,846 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:30:33,847 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label37.c [2020-09-25 04:30:33,863 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/98d1aecb4/59ed3caa65e2408eb30a34cc3b7d370d/FLAG3720053a8 [2020-09-25 04:30:34,079 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/98d1aecb4/59ed3caa65e2408eb30a34cc3b7d370d [2020-09-25 04:30:34,094 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:30:34,102 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:30:34,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:30:34,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:30:34,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:30:34,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:30:34" (1/1) ... [2020-09-25 04:30:34,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb7919e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:34, skipping insertion in model container [2020-09-25 04:30:34,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:30:34" (1/1) ... [2020-09-25 04:30:34,128 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:30:34,182 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:30:34,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:30:34,632 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:30:34,843 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:30:34,863 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:30:34,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:34 WrapperNode [2020-09-25 04:30:34,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:30:34,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:30:34,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:30:34,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:30:34,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:34" (1/1) ... [2020-09-25 04:30:34,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:34" (1/1) ... [2020-09-25 04:30:34,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:34" (1/1) ... [2020-09-25 04:30:34,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:34" (1/1) ... [2020-09-25 04:30:34,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:34" (1/1) ... [2020-09-25 04:30:34,980 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:34" (1/1) ... [2020-09-25 04:30:34,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:34" (1/1) ... [2020-09-25 04:30:35,000 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:30:35,001 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:30:35,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:30:35,002 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:30:35,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:34" (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 04:30:35,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:30:35,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:30:35,097 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:30:35,097 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:30:35,097 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:30:35,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:30:35,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:30:35,098 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:30:35,098 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:30:35,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:30:35,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:30:36,781 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:30:36,781 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:30:36,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:30:36 BoogieIcfgContainer [2020-09-25 04:30:36,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:30:36,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:30:36,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:30:36,806 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:30:36,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:30:34" (1/3) ... [2020-09-25 04:30:36,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600cbf66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:30:36, skipping insertion in model container [2020-09-25 04:30:36,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:30:34" (2/3) ... [2020-09-25 04:30:36,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600cbf66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:30:36, skipping insertion in model container [2020-09-25 04:30:36,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:30:36" (3/3) ... [2020-09-25 04:30:36,811 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label37.c [2020-09-25 04:30:36,824 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:30:36,838 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:30:36,861 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:30:36,907 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:30:36,907 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:30:36,908 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:30:36,908 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:30:36,908 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:30:36,908 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:30:36,908 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:30:36,908 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:30:36,938 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 04:30:36,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 04:30:36,950 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:36,952 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] [2020-09-25 04:30:36,952 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:36,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:36,960 INFO L82 PathProgramCache]: Analyzing trace with hash 813911311, now seen corresponding path program 1 times [2020-09-25 04:30:36,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:36,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079871953] [2020-09-25 04:30:36,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:37,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:37,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:37,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:37,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:38,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:38,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 04:30:38,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:30:38,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1214 [2020-09-25 04:30:38,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:38,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:38,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:30:38,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 04:30:38,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 04:30:38,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:30:38,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:38,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:38,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:38,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:38,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:38,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:38,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 04:30:38,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:38,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:38,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:38,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:38,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:30:38,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:38,602 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 04:30:38,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079871953] [2020-09-25 04:30:38,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:30:38,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:30:38,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298190622] [2020-09-25 04:30:38,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:30:38,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:38,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:30:38,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:30:38,639 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 04:30:40,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:40,753 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 04:30:40,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:30:40,755 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-09-25 04:30:40,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:40,780 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 04:30:40,780 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 04:30:40,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 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 04:30:40,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 04:30:40,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 04:30:40,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 04:30:40,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 04:30:40,897 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 73 [2020-09-25 04:30:40,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:40,898 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 04:30:40,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:30:40,899 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 04:30:40,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 04:30:40,909 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:40,910 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:40,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:30:40,911 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:40,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:40,912 INFO L82 PathProgramCache]: Analyzing trace with hash 975789152, now seen corresponding path program 1 times [2020-09-25 04:30:40,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:40,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000493261] [2020-09-25 04:30:40,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:40,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:41,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:41,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:41,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:41,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:41,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:41,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:42,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:45,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:45,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 04:30:45,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:30:45,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 04:30:45,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:45,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:45,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:45,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 04:30:45,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 04:30:45,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:30:46,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:46,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:46,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:46,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:46,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:46,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:46,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:30:46,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:46,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:46,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:46,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:46,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:46,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:30:46,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:46,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:46,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:46,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:46,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 04:30:46,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:46,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 04:30:46,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:46,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:46,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:46,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:46,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 04:30:46,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:46,332 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:30:46,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000493261] [2020-09-25 04:30:46,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:46,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:30:46,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310853247] [2020-09-25 04:30:46,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:30:46,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:46,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:30:46,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:30:46,337 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 04:30:48,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:48,290 INFO L93 Difference]: Finished difference Result 1224 states and 1530 transitions. [2020-09-25 04:30:48,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:30:48,291 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-09-25 04:30:48,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:48,297 INFO L225 Difference]: With dead ends: 1224 [2020-09-25 04:30:48,297 INFO L226 Difference]: Without dead ends: 695 [2020-09-25 04:30:48,300 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 04:30:48,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-09-25 04:30:48,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2020-09-25 04:30:48,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 04:30:48,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 04:30:48,330 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 152 [2020-09-25 04:30:48,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:48,331 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 04:30:48,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:30:48,331 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 04:30:48,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 04:30:48,336 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:48,336 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:48,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:30:48,337 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:48,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:48,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1429790590, now seen corresponding path program 1 times [2020-09-25 04:30:48,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:48,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100185846] [2020-09-25 04:30:48,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:48,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:48,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:48,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:48,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:49,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:50,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:50,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:50,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:50,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:53,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:53,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 04:30:53,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:30:53,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:30:53,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:53,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:53,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:30:53,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 04:30:53,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 04:30:53,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:30:53,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:30:53,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:53,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:53,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:53,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:30:53,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:53,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:30:53,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:53,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:53,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:30:53,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:53,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:30:53,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:53,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:30:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:53,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:53,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:30:53,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 04:30:53,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:30:53,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 04:30:53,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:30:53,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:30:53,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:30:53,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:30:53,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 04:30:53,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:30:53,663 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:30:53,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100185846] [2020-09-25 04:30:53,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:30:53,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:30:53,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056127960] [2020-09-25 04:30:53,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:30:53,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:30:53,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:30:53,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:30:53,668 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 5 states. [2020-09-25 04:30:55,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:30:55,521 INFO L93 Difference]: Finished difference Result 1529 states and 1962 transitions. [2020-09-25 04:30:55,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:30:55,521 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-09-25 04:30:55,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:30:55,529 INFO L225 Difference]: With dead ends: 1529 [2020-09-25 04:30:55,530 INFO L226 Difference]: Without dead ends: 999 [2020-09-25 04:30:55,533 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 04:30:55,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2020-09-25 04:30:55,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 999. [2020-09-25 04:30:55,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2020-09-25 04:30:55,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1220 transitions. [2020-09-25 04:30:55,586 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1220 transitions. Word has length 162 [2020-09-25 04:30:55,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:30:55,588 INFO L479 AbstractCegarLoop]: Abstraction has 999 states and 1220 transitions. [2020-09-25 04:30:55,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:30:55,588 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1220 transitions. [2020-09-25 04:30:55,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-25 04:30:55,596 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:30:55,596 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:30:55,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:30:55,597 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:30:55,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:30:55,597 INFO L82 PathProgramCache]: Analyzing trace with hash -407654397, now seen corresponding path program 1 times [2020-09-25 04:30:55,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:30:55,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797282336] [2020-09-25 04:30:55,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:30:55,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:30:55,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:55,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:55,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:56,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:58,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:30:58,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:00,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:00,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-09-25 04:31:00,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:31:00,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-09-25 04:31:00,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:00,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:00,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:31:00,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 04:31:00,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-25 04:31:00,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:00,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:00,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:00,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:00,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:00,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:00,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:00,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 04:31:00,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:00,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:00,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:00,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:00,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:31:00,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:00,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:00,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:00,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:01,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:01,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 04:31:01,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:01,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-09-25 04:31:01,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:01,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:01,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:01,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:31:01,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 04:31:01,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:01,278 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:01,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797282336] [2020-09-25 04:31:01,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:31:01,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:31:01,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598816863] [2020-09-25 04:31:01,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:31:01,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:01,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:31:01,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:31:01,281 INFO L87 Difference]: Start difference. First operand 999 states and 1220 transitions. Second operand 7 states. [2020-09-25 04:31:03,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:03,638 INFO L93 Difference]: Finished difference Result 2203 states and 2765 transitions. [2020-09-25 04:31:03,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:31:03,641 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 219 [2020-09-25 04:31:03,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:03,652 INFO L225 Difference]: With dead ends: 2203 [2020-09-25 04:31:03,652 INFO L226 Difference]: Without dead ends: 1369 [2020-09-25 04:31:03,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 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 04:31:03,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2020-09-25 04:31:03,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1327. [2020-09-25 04:31:03,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1327 states. [2020-09-25 04:31:03,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 1602 transitions. [2020-09-25 04:31:03,718 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 1602 transitions. Word has length 219 [2020-09-25 04:31:03,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:03,720 INFO L479 AbstractCegarLoop]: Abstraction has 1327 states and 1602 transitions. [2020-09-25 04:31:03,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:31:03,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 1602 transitions. [2020-09-25 04:31:03,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-09-25 04:31:03,725 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:03,726 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:31:03,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:31:03,726 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:03,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:03,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1248338468, now seen corresponding path program 1 times [2020-09-25 04:31:03,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:03,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820095324] [2020-09-25 04:31:03,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:03,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:03,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:03,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:04,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:04,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:04,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:05,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:05,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:06,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:08,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:08,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-09-25 04:31:08,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:31:08,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 04:31:08,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:08,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:08,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:08,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 04:31:08,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 04:31:08,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:08,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:08,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:08,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:08,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:08,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:08,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:08,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:31:08,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:08,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:08,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:08,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:08,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:08,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:31:08,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:08,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:08,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:09,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:09,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 04:31:09,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:09,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 04:31:09,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:09,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:09,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:09,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:09,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 04:31:09,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:09,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 04:31:09,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:09,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:09,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:09,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 04:31:09,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:09,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-25 04:31:09,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:09,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:09,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:09,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:31:09,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 04:31:09,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:09,373 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:31:09,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820095324] [2020-09-25 04:31:09,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:09,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:31:09,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88294856] [2020-09-25 04:31:09,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:31:09,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:09,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:31:09,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:31:09,377 INFO L87 Difference]: Start difference. First operand 1327 states and 1602 transitions. Second operand 7 states. [2020-09-25 04:31:11,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:11,810 INFO L93 Difference]: Finished difference Result 2995 states and 3761 transitions. [2020-09-25 04:31:11,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:31:11,811 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 245 [2020-09-25 04:31:11,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:11,820 INFO L225 Difference]: With dead ends: 2995 [2020-09-25 04:31:11,820 INFO L226 Difference]: Without dead ends: 1331 [2020-09-25 04:31:11,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:31:11,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2020-09-25 04:31:11,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1295. [2020-09-25 04:31:11,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1295 states. [2020-09-25 04:31:11,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1295 states to 1295 states and 1533 transitions. [2020-09-25 04:31:11,881 INFO L78 Accepts]: Start accepts. Automaton has 1295 states and 1533 transitions. Word has length 245 [2020-09-25 04:31:11,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:11,882 INFO L479 AbstractCegarLoop]: Abstraction has 1295 states and 1533 transitions. [2020-09-25 04:31:11,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:31:11,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states and 1533 transitions. [2020-09-25 04:31:11,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-09-25 04:31:11,888 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:11,889 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:31:11,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:31:11,889 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:11,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:11,890 INFO L82 PathProgramCache]: Analyzing trace with hash 41608479, now seen corresponding path program 1 times [2020-09-25 04:31:11,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:11,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308477225] [2020-09-25 04:31:11,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:11,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:12,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:12,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:13,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:13,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:14,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:16,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:16,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-09-25 04:31:16,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:31:16,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 04:31:16,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:16,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:16,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:16,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 04:31:16,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 04:31:16,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:17,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:17,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:17,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:17,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:17,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:31:17,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:17,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:31:17,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:17,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:17,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:17,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:17,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:17,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:17,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 04:31:17,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:17,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:17,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:17,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 04:31:17,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:17,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 04:31:17,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:17,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:17,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:17,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:17,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 04:31:17,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:17,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 04:31:17,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:17,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:17,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:17,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 04:31:17,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:17,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-09-25 04:31:17,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:17,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:17,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:17,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:31:17,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 04:31:17,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:17,545 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:31:17,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308477225] [2020-09-25 04:31:17,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:17,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 04:31:17,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921341509] [2020-09-25 04:31:17,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:31:17,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:17,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:31:17,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:31:17,548 INFO L87 Difference]: Start difference. First operand 1295 states and 1533 transitions. Second operand 8 states. [2020-09-25 04:31:20,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:20,348 INFO L93 Difference]: Finished difference Result 3085 states and 3908 transitions. [2020-09-25 04:31:20,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 04:31:20,349 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 260 [2020-09-25 04:31:20,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:20,361 INFO L225 Difference]: With dead ends: 3085 [2020-09-25 04:31:20,361 INFO L226 Difference]: Without dead ends: 1955 [2020-09-25 04:31:20,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-25 04:31:20,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1955 states. [2020-09-25 04:31:20,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1955 to 1919. [2020-09-25 04:31:20,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1919 states. [2020-09-25 04:31:20,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1919 states to 1919 states and 2427 transitions. [2020-09-25 04:31:20,433 INFO L78 Accepts]: Start accepts. Automaton has 1919 states and 2427 transitions. Word has length 260 [2020-09-25 04:31:20,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:20,434 INFO L479 AbstractCegarLoop]: Abstraction has 1919 states and 2427 transitions. [2020-09-25 04:31:20,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:31:20,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1919 states and 2427 transitions. [2020-09-25 04:31:20,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2020-09-25 04:31:20,443 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:20,444 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 04:31:20,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:31:20,444 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:20,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:20,445 INFO L82 PathProgramCache]: Analyzing trace with hash 2068511674, now seen corresponding path program 1 times [2020-09-25 04:31:20,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:20,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527111558] [2020-09-25 04:31:20,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:20,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:20,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:20,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking...