/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:24:57,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:24:57,318 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:24:57,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:24:57,364 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:24:57,372 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:24:57,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:24:57,379 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:24:57,382 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:24:57,385 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:24:57,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:24:57,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:24:57,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:24:57,391 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:24:57,393 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:24:57,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:24:57,397 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:24:57,398 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:24:57,400 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:24:57,408 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:24:57,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:24:57,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:24:57,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:24:57,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:24:57,426 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:24:57,426 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:24:57,426 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:24:57,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:24:57,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:24:57,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:24:57,438 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:24:57,439 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:24:57,442 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:24:57,443 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:24:57,444 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:24:57,445 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:24:57,445 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:24:57,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:24:57,446 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:24:57,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:24:57,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:24:57,450 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 12:24:57,492 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:24:57,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:24:57,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:24:57,495 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:24:57,496 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:24:57,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:24:57,496 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:24:57,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:24:57,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:24:57,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:24:57,498 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:24:57,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:24:57,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:24:57,499 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:24:57,499 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:24:57,500 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:24:57,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:24:57,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:24:57,500 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:24:57,500 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:24:57,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:24:57,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:24:57,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:24:57,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:24:57,501 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:24:57,502 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:24:57,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:24:57,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:24:57,502 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:24:57,502 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:24:57,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:24:58,002 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:24:58,008 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:24:58,010 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:24:58,010 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:24:58,012 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label44.c [2020-09-25 12:24:58,104 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/addfc9e7b/0f5a811b763741b4894ff0ad36d005f7/FLAGff7bb0c29 [2020-09-25 12:24:58,804 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:24:58,805 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label44.c [2020-09-25 12:24:58,842 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/addfc9e7b/0f5a811b763741b4894ff0ad36d005f7/FLAGff7bb0c29 [2020-09-25 12:24:59,042 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/addfc9e7b/0f5a811b763741b4894ff0ad36d005f7 [2020-09-25 12:24:59,055 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:24:59,062 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:24:59,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:24:59,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:24:59,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:24:59,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:24:59" (1/1) ... [2020-09-25 12:24:59,076 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36345b5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:59, skipping insertion in model container [2020-09-25 12:24:59,076 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:24:59" (1/1) ... [2020-09-25 12:24:59,086 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:24:59,158 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:24:59,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:24:59,681 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:24:59,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:24:59,920 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:24:59,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:59 WrapperNode [2020-09-25 12:24:59,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:24:59,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:24:59,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:24:59,923 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:24:59,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:59" (1/1) ... [2020-09-25 12:24:59,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:59" (1/1) ... [2020-09-25 12:24:59,960 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:59" (1/1) ... [2020-09-25 12:24:59,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:59" (1/1) ... [2020-09-25 12:25:00,001 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:59" (1/1) ... [2020-09-25 12:25:00,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:59" (1/1) ... [2020-09-25 12:25:00,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:59" (1/1) ... [2020-09-25 12:25:00,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:25:00,036 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:25:00,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:25:00,037 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:25:00,038 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:25:00,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:25:00,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:25:00,135 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:25:00,135 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:25:00,135 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:25:00,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:25:00,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:25:00,136 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:25:00,136 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:25:00,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:25:00,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:25:01,485 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:25:01,485 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:25:01,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:25:01 BoogieIcfgContainer [2020-09-25 12:25:01,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:25:01,496 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:25:01,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:25:01,500 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:25:01,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:24:59" (1/3) ... [2020-09-25 12:25:01,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@467d4b31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:25:01, skipping insertion in model container [2020-09-25 12:25:01,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:59" (2/3) ... [2020-09-25 12:25:01,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@467d4b31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:25:01, skipping insertion in model container [2020-09-25 12:25:01,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:25:01" (3/3) ... [2020-09-25 12:25:01,505 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label44.c [2020-09-25 12:25:01,517 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:25:01,529 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:25:01,552 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:25:01,588 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:25:01,588 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:25:01,588 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:25:01,588 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:25:01,589 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:25:01,589 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:25:01,589 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:25:01,589 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:25:01,626 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 12:25:01,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-25 12:25:01,646 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:01,648 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] [2020-09-25 12:25:01,648 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:01,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:01,657 INFO L82 PathProgramCache]: Analyzing trace with hash -118135375, now seen corresponding path program 1 times [2020-09-25 12:25:01,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:01,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776850861] [2020-09-25 12:25:01,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:01,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:02,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:02,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:03,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:04,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:05,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:05,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:06,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:06,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-25 12:25:06,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:25:06,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:25:06,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:06,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:06,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:25:06,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 12:25:06,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 12:25:06,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:25:07,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:07,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:07,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:07,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:07,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:07,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:07,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 12:25:07,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:07,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:07,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:25:07,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:07,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 12:25:07,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:07,207 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 12:25:07,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776850861] [2020-09-25 12:25:07,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:25:07,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:25:07,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145130752] [2020-09-25 12:25:07,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:25:07,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:07,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:25:07,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:25:07,242 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 12:25:09,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:09,618 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 12:25:09,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:25:09,622 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2020-09-25 12:25:09,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:09,649 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 12:25:09,649 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 12:25:09,660 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 12:25:09,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 12:25:09,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 12:25:09,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 12:25:09,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 12:25:09,812 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 114 [2020-09-25 12:25:09,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:09,814 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 12:25:09,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:25:09,814 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 12:25:09,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 12:25:09,828 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:09,829 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] [2020-09-25 12:25:09,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:25:09,829 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:09,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:09,830 INFO L82 PathProgramCache]: Analyzing trace with hash 644121349, now seen corresponding path program 1 times [2020-09-25 12:25:09,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:09,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349905139] [2020-09-25 12:25:09,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:09,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:09,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:11,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:11,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:11,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:14,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:14,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:14,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 12:25:14,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:25:14,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 12:25:14,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:14,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:14,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:25:14,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 12:25:14,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 12:25:14,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:15,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:15,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:15,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:15,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:15,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:15,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:25:15,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:15,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:15,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:25:15,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:15,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:25:15,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:15,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:25:15,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:15,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:15,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:15,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 12:25:15,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:15,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 12:25:15,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:15,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:15,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:25:15,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:15,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:25:15,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:15,204 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 12:25:15,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349905139] [2020-09-25 12:25:15,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:25:15,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:25:15,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910517510] [2020-09-25 12:25:15,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:25:15,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:15,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:25:15,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:25:15,210 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 12:25:17,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:17,708 INFO L93 Difference]: Finished difference Result 1900 states and 2381 transitions. [2020-09-25 12:25:17,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:25:17,709 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-09-25 12:25:17,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:17,718 INFO L225 Difference]: With dead ends: 1900 [2020-09-25 12:25:17,718 INFO L226 Difference]: Without dead ends: 1189 [2020-09-25 12:25:17,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 12:25:17,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2020-09-25 12:25:17,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1055. [2020-09-25 12:25:17,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1055 states. [2020-09-25 12:25:17,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1308 transitions. [2020-09-25 12:25:17,766 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1308 transitions. Word has length 132 [2020-09-25 12:25:17,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:17,767 INFO L479 AbstractCegarLoop]: Abstraction has 1055 states and 1308 transitions. [2020-09-25 12:25:17,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:25:17,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1308 transitions. [2020-09-25 12:25:17,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 12:25:17,774 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:17,775 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] [2020-09-25 12:25:17,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:25:17,775 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:17,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:17,776 INFO L82 PathProgramCache]: Analyzing trace with hash -897472656, now seen corresponding path program 1 times [2020-09-25 12:25:17,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:17,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595341490] [2020-09-25 12:25:17,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:17,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:17,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:17,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:18,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:19,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:19,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:22,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:22,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-09-25 12:25:22,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:25:22,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4371 [2020-09-25 12:25:22,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:22,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:22,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:25:22,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 12:25:22,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 12:25:22,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:25:22,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:22,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:22,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:22,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:22,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:22,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:22,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:25:22,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:22,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:22,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:25:22,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:22,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:25:22,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:25:22,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:25:22,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:22,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:22,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:22,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:25:22,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:22,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 12:25:22,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:22,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:22,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:25:22,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:22,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:25:22,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:25:22,549 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 12:25:22,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595341490] [2020-09-25 12:25:22,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:25:22,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:25:22,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392197481] [2020-09-25 12:25:22,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:25:22,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:22,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:25:22,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:25:22,555 INFO L87 Difference]: Start difference. First operand 1055 states and 1308 transitions. Second operand 5 states. [2020-09-25 12:25:24,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:24,735 INFO L93 Difference]: Finished difference Result 2737 states and 3595 transitions. [2020-09-25 12:25:24,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:25:24,736 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-09-25 12:25:24,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:24,748 INFO L225 Difference]: With dead ends: 2737 [2020-09-25 12:25:24,748 INFO L226 Difference]: Without dead ends: 1704 [2020-09-25 12:25:24,753 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 12:25:24,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2020-09-25 12:25:24,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 1664. [2020-09-25 12:25:24,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1664 states. [2020-09-25 12:25:24,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1664 states to 1664 states and 2048 transitions. [2020-09-25 12:25:24,847 INFO L78 Accepts]: Start accepts. Automaton has 1664 states and 2048 transitions. Word has length 138 [2020-09-25 12:25:24,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:24,849 INFO L479 AbstractCegarLoop]: Abstraction has 1664 states and 2048 transitions. [2020-09-25 12:25:24,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:25:24,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1664 states and 2048 transitions. [2020-09-25 12:25:24,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 12:25:24,863 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:24,863 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:25:24,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:25:24,863 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:24,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:24,864 INFO L82 PathProgramCache]: Analyzing trace with hash -967266101, now seen corresponding path program 1 times [2020-09-25 12:25:24,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:24,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050226382] [2020-09-25 12:25:24,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:24,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:24,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:24,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:25,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:26,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:29,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:29,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 12:25:29,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:25:29,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 12:25:29,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:29,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:29,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:25:29,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-09-25 12:25:29,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 12:25:29,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:30,513 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 34 [2020-09-25 12:25:30,696 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 33 [2020-09-25 12:25:30,855 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 31 [2020-09-25 12:25:31,025 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 29 [2020-09-25 12:25:31,172 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 26 [2020-09-25 12:25:31,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:31,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:31,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:31,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:31,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:31,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:31,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 12:25:31,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:31,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:31,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:25:31,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:31,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:25:31,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:31,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:25:31,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:31,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:31,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:31,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 12:25:31,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:31,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:25:31,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:31,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:31,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:25:31,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:31,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:25:31,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:31,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 12:25:31,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:31,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:31,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:31,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-25 12:25:31,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:31,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 12:25:31,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:31,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:31,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:25:31,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:31,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:25:31,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:31,662 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 12:25:31,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050226382] [2020-09-25 12:25:31,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:25:31,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 12:25:31,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286720982] [2020-09-25 12:25:31,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 12:25:31,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:31,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 12:25:31,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:25:31,668 INFO L87 Difference]: Start difference. First operand 1664 states and 2048 transitions. Second operand 12 states. [2020-09-25 12:25:31,990 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-09-25 12:25:32,441 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-09-25 12:25:32,606 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-09-25 12:25:32,982 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 84 [2020-09-25 12:25:34,139 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 83 [2020-09-25 12:25:34,553 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 82 [2020-09-25 12:25:35,310 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2020-09-25 12:25:35,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:35,988 INFO L93 Difference]: Finished difference Result 3726 states and 4776 transitions. [2020-09-25 12:25:35,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 12:25:35,993 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 152 [2020-09-25 12:25:35,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:36,002 INFO L225 Difference]: With dead ends: 3726 [2020-09-25 12:25:36,002 INFO L226 Difference]: Without dead ends: 1672 [2020-09-25 12:25:36,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=230, Invalid=526, Unknown=0, NotChecked=0, Total=756 [2020-09-25 12:25:36,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1672 states. [2020-09-25 12:25:36,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1672 to 1632. [2020-09-25 12:25:36,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1632 states. [2020-09-25 12:25:36,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 1996 transitions. [2020-09-25 12:25:36,072 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 1996 transitions. Word has length 152 [2020-09-25 12:25:36,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:36,072 INFO L479 AbstractCegarLoop]: Abstraction has 1632 states and 1996 transitions. [2020-09-25 12:25:36,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 12:25:36,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 1996 transitions. [2020-09-25 12:25:36,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 12:25:36,080 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:36,080 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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 12:25:36,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:25:36,080 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:36,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:36,081 INFO L82 PathProgramCache]: Analyzing trace with hash 130781434, now seen corresponding path program 1 times [2020-09-25 12:25:36,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:36,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274557959] [2020-09-25 12:25:36,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:36,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:36,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:36,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:41,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:41,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 12:25:41,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:25:41,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 12:25:41,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:41,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:41,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:25:41,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-25 12:25:41,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 12:25:41,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:41,557 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2020-09-25 12:25:41,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:41,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:41,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:41,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:41,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:41,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:41,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:25:41,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:41,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:41,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:25:41,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:41,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:25:41,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:25:42,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:25:42,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:42,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:42,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:42,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 12:25:42,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:42,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:25:42,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:42,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:42,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:25:42,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:42,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:25:42,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:42,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 12:25:42,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:42,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:42,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:42,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 12:25:42,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:42,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 12:25:42,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:42,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:42,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:25:42,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:42,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 12:25:42,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:42,192 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 12:25:42,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274557959] [2020-09-25 12:25:42,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:25:42,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 12:25:42,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000854736] [2020-09-25 12:25:42,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 12:25:42,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:42,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 12:25:42,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:25:42,195 INFO L87 Difference]: Start difference. First operand 1632 states and 1996 transitions. Second operand 13 states. [2020-09-25 12:25:42,865 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-09-25 12:25:43,090 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-09-25 12:25:44,090 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-09-25 12:25:44,339 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-09-25 12:25:44,898 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-09-25 12:25:45,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:45,927 INFO L93 Difference]: Finished difference Result 4181 states and 5473 transitions. [2020-09-25 12:25:45,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 12:25:45,928 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 157 [2020-09-25 12:25:45,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:45,946 INFO L225 Difference]: With dead ends: 4181 [2020-09-25 12:25:45,946 INFO L226 Difference]: Without dead ends: 2253 [2020-09-25 12:25:45,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2020-09-25 12:25:45,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2253 states. [2020-09-25 12:25:46,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2253 to 2195. [2020-09-25 12:25:46,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2195 states. [2020-09-25 12:25:46,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2195 states to 2195 states and 2628 transitions. [2020-09-25 12:25:46,029 INFO L78 Accepts]: Start accepts. Automaton has 2195 states and 2628 transitions. Word has length 157 [2020-09-25 12:25:46,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:46,029 INFO L479 AbstractCegarLoop]: Abstraction has 2195 states and 2628 transitions. [2020-09-25 12:25:46,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 12:25:46,029 INFO L276 IsEmpty]: Start isEmpty. Operand 2195 states and 2628 transitions. [2020-09-25 12:25:46,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 12:25:46,038 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:46,038 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:25:46,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:25:46,039 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:46,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:46,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1010669201, now seen corresponding path program 1 times [2020-09-25 12:25:46,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:46,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324952105] [2020-09-25 12:25:46,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:46,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:46,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:46,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking...