/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=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:45:27,508 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:45:27,512 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:45:27,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:45:27,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:45:27,541 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:45:27,542 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:45:27,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:45:27,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:45:27,548 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:45:27,549 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:45:27,550 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:45:27,551 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:45:27,552 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:45:27,553 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:45:27,555 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:45:27,556 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:45:27,557 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:45:27,559 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:45:27,561 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:45:27,563 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:45:27,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:45:27,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:45:27,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:45:27,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:45:27,574 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:45:27,574 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:45:27,578 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:45:27,579 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:45:27,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:45:27,582 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:45:27,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:45:27,585 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:45:27,586 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:45:27,587 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:45:27,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:45:27,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:45:27,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:45:27,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:45:27,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:45:27,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:45:27,596 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 06:45:27,646 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:45:27,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:45:27,649 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:45:27,649 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:45:27,649 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:45:27,649 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:45:27,650 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:45:27,650 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:45:27,650 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:45:27,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:45:27,652 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:45:27,652 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:45:27,652 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:45:27,653 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:45:27,653 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:45:27,653 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:45:27,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:45:27,654 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:45:27,654 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:45:27,654 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:45:27,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:45:27,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:45:27,655 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:45:27,655 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:45:27,656 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:45:27,656 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:45:27,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:45:27,656 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:45:27,656 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:45:27,657 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:45:28,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:45:28,126 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:45:28,131 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:45:28,133 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:45:28,133 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:45:28,135 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label40.c [2020-09-25 06:45:28,224 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6e14a94c/aebe86f8d4504a6d8ab4f0c6b6c5efa3/FLAGce6bd6f2c [2020-09-25 06:45:28,927 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:45:28,928 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label40.c [2020-09-25 06:45:28,947 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6e14a94c/aebe86f8d4504a6d8ab4f0c6b6c5efa3/FLAGce6bd6f2c [2020-09-25 06:45:29,157 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6e14a94c/aebe86f8d4504a6d8ab4f0c6b6c5efa3 [2020-09-25 06:45:29,172 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:45:29,181 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:45:29,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:45:29,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:45:29,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:45:29,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:45:29" (1/1) ... [2020-09-25 06:45:29,197 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@678923a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:29, skipping insertion in model container [2020-09-25 06:45:29,197 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:45:29" (1/1) ... [2020-09-25 06:45:29,208 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:45:29,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:45:29,824 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:45:29,831 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:45:29,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:45:29,991 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:45:29,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:29 WrapperNode [2020-09-25 06:45:29,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:45:29,994 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:45:29,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:45:29,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:45:30,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:29" (1/1) ... [2020-09-25 06:45:30,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:29" (1/1) ... [2020-09-25 06:45:30,072 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:29" (1/1) ... [2020-09-25 06:45:30,073 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:29" (1/1) ... [2020-09-25 06:45:30,133 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:29" (1/1) ... [2020-09-25 06:45:30,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:29" (1/1) ... [2020-09-25 06:45:30,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:29" (1/1) ... [2020-09-25 06:45:30,171 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:45:30,172 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:45:30,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:45:30,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:45:30,174 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:45:30,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:45:30,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:45:30,267 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:45:30,267 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:45:30,268 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:45:30,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:45:30,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:45:30,270 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:45:30,270 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:45:30,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:45:30,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:45:31,641 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:45:31,642 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:45:31,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:45:31 BoogieIcfgContainer [2020-09-25 06:45:31,651 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:45:31,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:45:31,653 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:45:31,657 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:45:31,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:45:29" (1/3) ... [2020-09-25 06:45:31,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36603881 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:45:31, skipping insertion in model container [2020-09-25 06:45:31,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:45:29" (2/3) ... [2020-09-25 06:45:31,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36603881 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:45:31, skipping insertion in model container [2020-09-25 06:45:31,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:45:31" (3/3) ... [2020-09-25 06:45:31,662 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label40.c [2020-09-25 06:45:31,673 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:45:31,685 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:45:31,710 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:45:31,749 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:45:31,749 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:45:31,749 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:45:31,750 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:45:31,750 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:45:31,750 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:45:31,750 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:45:31,750 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:45:31,783 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 06:45:31,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-09-25 06:45:31,802 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:31,804 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:45:31,805 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:31,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:31,813 INFO L82 PathProgramCache]: Analyzing trace with hash 632775426, now seen corresponding path program 1 times [2020-09-25 06:45:31,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:31,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480080031] [2020-09-25 06:45:31,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:32,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:32,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:32,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:32,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:35,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:35,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:37,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:37,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-09-25 06:45:37,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:45:37,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:45:37,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:37,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:37,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:45:37,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:45:37,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 06:45:37,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:45:37,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:37,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:37,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:37,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:37,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:37,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:37,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 06:45:37,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:37,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:37,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:37,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:37,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:45:37,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:37,379 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 06:45:37,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480080031] [2020-09-25 06:45:37,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:45:37,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:45:37,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577207707] [2020-09-25 06:45:37,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:45:37,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:37,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:45:37,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:45:37,415 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 06:45:39,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:45:39,756 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 06:45:39,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:45:39,762 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-09-25 06:45:39,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:45:39,789 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 06:45:39,789 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 06:45:39,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:45:39,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 06:45:39,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 06:45:39,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 06:45:39,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 06:45:39,916 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 115 [2020-09-25 06:45:39,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:45:39,917 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 06:45:39,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:45:39,918 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 06:45:39,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 06:45:39,926 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:39,926 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:45:39,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:45:39,927 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:39,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:39,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1507069906, now seen corresponding path program 1 times [2020-09-25 06:45:39,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:39,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032136099] [2020-09-25 06:45:39,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:39,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:40,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:40,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:41,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:41,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:42,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:42,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:44,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:44,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 06:45:44,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:45:44,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 06:45:44,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:44,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:44,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:45:44,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 06:45:44,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 06:45:44,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:45,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:45,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:45,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:45,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:45,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:45,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:45,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:45:45,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:45,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:45,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:45:45,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:45,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:45:45,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:45,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:45:45,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:45,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:45,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:45,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:45:45,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:45,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:45:45,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:45,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:45,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:45,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:45,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 06:45:45,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:45,253 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:45:45,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1032136099] [2020-09-25 06:45:45,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:45:45,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 06:45:45,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645112462] [2020-09-25 06:45:45,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:45:45,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:45,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:45:45,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:45:45,259 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 6 states. [2020-09-25 06:45:48,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:45:48,387 INFO L93 Difference]: Finished difference Result 2164 states and 2805 transitions. [2020-09-25 06:45:48,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:45:48,390 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2020-09-25 06:45:48,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:45:48,404 INFO L225 Difference]: With dead ends: 2164 [2020-09-25 06:45:48,404 INFO L226 Difference]: Without dead ends: 1453 [2020-09-25 06:45:48,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:45:48,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2020-09-25 06:45:48,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1344. [2020-09-25 06:45:48,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1344 states. [2020-09-25 06:45:48,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 1744 transitions. [2020-09-25 06:45:48,467 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 1744 transitions. Word has length 133 [2020-09-25 06:45:48,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:45:48,469 INFO L479 AbstractCegarLoop]: Abstraction has 1344 states and 1744 transitions. [2020-09-25 06:45:48,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:45:48,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 1744 transitions. [2020-09-25 06:45:48,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 06:45:48,477 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:48,477 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 06:45:48,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:45:48,478 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:48,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:48,478 INFO L82 PathProgramCache]: Analyzing trace with hash -2051843805, now seen corresponding path program 1 times [2020-09-25 06:45:48,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:48,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826328803] [2020-09-25 06:45:48,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:48,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:48,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:48,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:49,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:49,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:52,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:52,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 06:45:52,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:45:52,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4308 [2020-09-25 06:45:52,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:52,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:52,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:45:52,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 06:45:52,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 06:45:52,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:52,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:52,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:52,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:52,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:52,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:52,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:52,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:45:52,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:52,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:52,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:45:52,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:52,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:45:52,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:53,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:45:53,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:53,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:53,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:53,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 06:45:53,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:53,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 06:45:53,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:53,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:53,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:53,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:53,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:45:53,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:53,092 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:45:53,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [826328803] [2020-09-25 06:45:53,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:45:53,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:45:53,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216325416] [2020-09-25 06:45:53,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:45:53,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:53,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:45:53,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:45:53,095 INFO L87 Difference]: Start difference. First operand 1344 states and 1744 transitions. Second operand 5 states. [2020-09-25 06:45:55,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:45:55,127 INFO L93 Difference]: Finished difference Result 3619 states and 4959 transitions. [2020-09-25 06:45:55,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:45:55,130 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-09-25 06:45:55,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:45:55,152 INFO L225 Difference]: With dead ends: 3619 [2020-09-25 06:45:55,153 INFO L226 Difference]: Without dead ends: 2297 [2020-09-25 06:45:55,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:45:55,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2297 states. [2020-09-25 06:45:55,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2297 to 1957. [2020-09-25 06:45:55,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1957 states. [2020-09-25 06:45:55,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 2508 transitions. [2020-09-25 06:45:55,231 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 2508 transitions. Word has length 139 [2020-09-25 06:45:55,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:45:55,232 INFO L479 AbstractCegarLoop]: Abstraction has 1957 states and 2508 transitions. [2020-09-25 06:45:55,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:45:55,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 2508 transitions. [2020-09-25 06:45:55,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 06:45:55,240 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:55,240 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:45:55,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:45:55,241 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:55,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:55,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1993339391, now seen corresponding path program 1 times [2020-09-25 06:45:55,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:55,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1504749167] [2020-09-25 06:45:55,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:55,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:55,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:55,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:55,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:55,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:00,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:00,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 06:46:00,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:46:00,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 06:46:00,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:00,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:00,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:00,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 06:46:00,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 06:46:00,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:00,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:00,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:00,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:00,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:46:00,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:00,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:46:00,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:00,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:00,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:00,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:00,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:00,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 06:46:00,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:46:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:00,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:00,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:00,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:46:00,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:00,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:46:00,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:00,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:00,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:00,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:00,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 06:46:00,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:00,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 06:46:00,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:00,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:00,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:00,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 06:46:00,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:00,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 06:46:00,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:00,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:00,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:00,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:46:00,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:46:00,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:00,512 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:46:00,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1504749167] [2020-09-25 06:46:00,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:46:00,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:46:00,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936499417] [2020-09-25 06:46:00,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:46:00,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:00,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:46:00,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:46:00,518 INFO L87 Difference]: Start difference. First operand 1957 states and 2508 transitions. Second operand 7 states. [2020-09-25 06:46:02,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:02,099 INFO L93 Difference]: Finished difference Result 3900 states and 5169 transitions. [2020-09-25 06:46:02,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:46:02,100 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 152 [2020-09-25 06:46:02,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:02,113 INFO L225 Difference]: With dead ends: 3900 [2020-09-25 06:46:02,113 INFO L226 Difference]: Without dead ends: 1965 [2020-09-25 06:46:02,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:46:02,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2020-09-25 06:46:02,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1864. [2020-09-25 06:46:02,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1864 states. [2020-09-25 06:46:02,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1864 states to 1864 states and 2356 transitions. [2020-09-25 06:46:02,203 INFO L78 Accepts]: Start accepts. Automaton has 1864 states and 2356 transitions. Word has length 152 [2020-09-25 06:46:02,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:02,204 INFO L479 AbstractCegarLoop]: Abstraction has 1864 states and 2356 transitions. [2020-09-25 06:46:02,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:46:02,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1864 states and 2356 transitions. [2020-09-25 06:46:02,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 06:46:02,215 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:02,216 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:46:02,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:46:02,217 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:02,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:02,217 INFO L82 PathProgramCache]: Analyzing trace with hash 261324474, now seen corresponding path program 1 times [2020-09-25 06:46:02,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:02,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912979078] [2020-09-25 06:46:02,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:02,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:02,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:02,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:03,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:04,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:07,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:07,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 06:46:07,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:46:07,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 06:46:07,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:07,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:07,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:07,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 06:46:07,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 06:46:07,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:07,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:07,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:07,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:07,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:46:07,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:07,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:46:07,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:07,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:07,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:07,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:07,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:07,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 06:46:07,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:46:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:07,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:07,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:07,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:46:07,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:07,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 06:46:07,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:07,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:07,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:07,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:07,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 06:46:07,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:46:07,550 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:46:07,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912979078] [2020-09-25 06:46:07,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:46:07,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:46:07,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376244938] [2020-09-25 06:46:07,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:46:07,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:07,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:46:07,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:46:07,554 INFO L87 Difference]: Start difference. First operand 1864 states and 2356 transitions. Second operand 5 states. [2020-09-25 06:46:09,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:09,065 INFO L93 Difference]: Finished difference Result 4358 states and 5606 transitions. [2020-09-25 06:46:09,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:46:09,066 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-09-25 06:46:09,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:09,076 INFO L225 Difference]: With dead ends: 4358 [2020-09-25 06:46:09,076 INFO L226 Difference]: Without dead ends: 1853 [2020-09-25 06:46:09,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 06:46:09,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1853 states. [2020-09-25 06:46:09,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1853 to 1813. [2020-09-25 06:46:09,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1813 states. [2020-09-25 06:46:09,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 2233 transitions. [2020-09-25 06:46:09,146 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 2233 transitions. Word has length 153 [2020-09-25 06:46:09,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:09,146 INFO L479 AbstractCegarLoop]: Abstraction has 1813 states and 2233 transitions. [2020-09-25 06:46:09,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:46:09,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 2233 transitions. [2020-09-25 06:46:09,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 06:46:09,157 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:09,158 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:46:09,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:46:09,158 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:09,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:09,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1166216736, now seen corresponding path program 1 times [2020-09-25 06:46:09,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:09,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514086626] [2020-09-25 06:46:09,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:09,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:09,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:09,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:09,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:10,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:12,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:12,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 06:46:12,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:46:12,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3714 [2020-09-25 06:46:12,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:12,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:12,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:12,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-09-25 06:46:12,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-09-25 06:46:12,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:46:13,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:13,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:13,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:13,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:13,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:46:13,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:13,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:46:13,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:13,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:13,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:13,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:13,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:13,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:13,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:46:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:13,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:13,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:13,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 06:46:13,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:13,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 06:46:13,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:13,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:13,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:13,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:13,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 06:46:13,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:13,196 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:46:13,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1514086626] [2020-09-25 06:46:13,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:46:13,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:46:13,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823751602] [2020-09-25 06:46:13,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:46:13,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:13,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:46:13,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:46:13,199 INFO L87 Difference]: Start difference. First operand 1813 states and 2233 transitions. Second operand 5 states. [2020-09-25 06:46:14,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:14,921 INFO L93 Difference]: Finished difference Result 4780 states and 6058 transitions. [2020-09-25 06:46:14,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:46:14,922 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2020-09-25 06:46:14,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:14,923 INFO L225 Difference]: With dead ends: 4780 [2020-09-25 06:46:14,923 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 06:46:14,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:46:14,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 06:46:14,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 06:46:14,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 06:46:14,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 06:46:14,937 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 179 [2020-09-25 06:46:14,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:14,937 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 06:46:14,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:46:14,937 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 06:46:14,937 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 06:46:14,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:46:14,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 06:46:16,183 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 75 [2020-09-25 06:46:16,589 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 75