/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/Problem01_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:21:19,362 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:21:19,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:21:19,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:21:19,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:21:19,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:21:19,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:21:19,397 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:21:19,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:21:19,400 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:21:19,401 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:21:19,402 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:21:19,402 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:21:19,404 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:21:19,405 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:21:19,406 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:21:19,407 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:21:19,408 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:21:19,410 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:21:19,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:21:19,415 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:21:19,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:21:19,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:21:19,421 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:21:19,423 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:21:19,423 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:21:19,426 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:21:19,428 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:21:19,428 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:21:19,432 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:21:19,432 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:21:19,433 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:21:19,435 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:21:19,436 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:21:19,437 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:21:19,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:21:19,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:21:19,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:21:19,438 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:21:19,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:21:19,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:21:19,442 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 12:21:19,504 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:21:19,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:21:19,508 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:21:19,509 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:21:19,509 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:21:19,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:21:19,509 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:21:19,509 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:21:19,510 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:21:19,511 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:21:19,511 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:21:19,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:21:19,511 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:21:19,512 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:21:19,513 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:21:19,513 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:21:19,513 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:21:19,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:21:19,514 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:21:19,514 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:21:19,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:21:19,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:21:19,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:21:19,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:21:19,515 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:21:19,515 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:21:19,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:21:19,516 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:21:19,516 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:21:19,516 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 12:21:19,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:21:19,966 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:21:19,970 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:21:19,971 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:21:19,971 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:21:19,973 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label17.c [2020-09-25 12:21:20,065 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b053cec8/2b9a35bb6eb14c25ab73d9008392d924/FLAG3149d0333 [2020-09-25 12:21:20,734 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:21:20,735 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label17.c [2020-09-25 12:21:20,753 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b053cec8/2b9a35bb6eb14c25ab73d9008392d924/FLAG3149d0333 [2020-09-25 12:21:20,998 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5b053cec8/2b9a35bb6eb14c25ab73d9008392d924 [2020-09-25 12:21:21,015 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:21:21,022 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:21:21,025 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:21:21,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:21:21,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:21:21,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:21:21" (1/1) ... [2020-09-25 12:21:21,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@678b2c62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:21, skipping insertion in model container [2020-09-25 12:21:21,036 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:21:21" (1/1) ... [2020-09-25 12:21:21,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:21:21,099 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:21:21,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:21:21,579 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:21:21,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:21:21,799 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:21:21,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:21 WrapperNode [2020-09-25 12:21:21,799 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:21:21,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:21:21,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:21:21,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:21:21,816 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:21" (1/1) ... [2020-09-25 12:21:21,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:21" (1/1) ... [2020-09-25 12:21:21,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:21" (1/1) ... [2020-09-25 12:21:21,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:21" (1/1) ... [2020-09-25 12:21:21,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:21" (1/1) ... [2020-09-25 12:21:21,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:21" (1/1) ... [2020-09-25 12:21:21,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:21" (1/1) ... [2020-09-25 12:21:21,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:21:21,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:21:21,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:21:21,915 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:21:21,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:21" (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 12:21:22,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:21:22,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:21:22,001 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:21:22,001 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:21:22,001 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:21:22,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:21:22,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:21:22,002 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:21:22,002 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:21:22,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:21:22,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:21:23,396 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:21:23,397 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:21:23,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:21:23 BoogieIcfgContainer [2020-09-25 12:21:23,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:21:23,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:21:23,407 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:21:23,411 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:21:23,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:21:21" (1/3) ... [2020-09-25 12:21:23,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36abdc5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:21:23, skipping insertion in model container [2020-09-25 12:21:23,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:21" (2/3) ... [2020-09-25 12:21:23,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36abdc5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:21:23, skipping insertion in model container [2020-09-25 12:21:23,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:21:23" (3/3) ... [2020-09-25 12:21:23,416 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label17.c [2020-09-25 12:21:23,427 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:21:23,438 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:21:23,461 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:21:23,499 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:21:23,499 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:21:23,499 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:21:23,500 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:21:23,500 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:21:23,500 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:21:23,500 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:21:23,500 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:21:23,533 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 12:21:23,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 12:21:23,556 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:23,557 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:21:23,558 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:23,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:23,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1930932209, now seen corresponding path program 1 times [2020-09-25 12:21:23,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:23,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468726315] [2020-09-25 12:21:23,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:23,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:24,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:24,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:24,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:25,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:26,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:28,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:28,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:28,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:28,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:28,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 12:21:28,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:21:28,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 12:21:28,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:28,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:28,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:21:28,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 12:21:28,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 12:21:28,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 12:21:29,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:29,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:29,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:29,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:29,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:29,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 12:21:29,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:29,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:29,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:29,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:29,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 12:21:29,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:29,209 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 12:21:29,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468726315] [2020-09-25 12:21:29,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:21:29,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:21:29,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959054281] [2020-09-25 12:21:29,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:21:29,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:29,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:21:29,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:21:29,247 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 12:21:31,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:31,445 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-25 12:21:31,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:21:31,449 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2020-09-25 12:21:31,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:31,495 INFO L225 Difference]: With dead ends: 1340 [2020-09-25 12:21:31,495 INFO L226 Difference]: Without dead ends: 741 [2020-09-25 12:21:31,509 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 12:21:31,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-25 12:21:31,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-25 12:21:31,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 12:21:31,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 12:21:31,614 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 144 [2020-09-25 12:21:31,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:31,616 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 12:21:31,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:21:31,616 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 12:21:31,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 12:21:31,627 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:31,628 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:21:31,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:21:31,628 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:31,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:31,629 INFO L82 PathProgramCache]: Analyzing trace with hash -838420896, now seen corresponding path program 1 times [2020-09-25 12:21:31,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:31,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557619235] [2020-09-25 12:21:31,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:31,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:31,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:31,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:32,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:32,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:32,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:33,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:33,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:36,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:36,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 12:21:36,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:21:36,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:21:36,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:36,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:36,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:21:36,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 12:21:36,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 12:21:36,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:36,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:36,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:36,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:36,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:36,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:36,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:36,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:21:36,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:36,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:36,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:36,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:36,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:36,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 12:21:36,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:21:36,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:36,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:37,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:37,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 12:21:37,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:37,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 12:21:37,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:37,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:37,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:21:37,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:37,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:21:37,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:37,251 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:21:37,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557619235] [2020-09-25 12:21:37,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:37,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:21:37,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553951747] [2020-09-25 12:21:37,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:21:37,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:37,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:21:37,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:21:37,256 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 9 states. [2020-09-25 12:21:41,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:41,777 INFO L93 Difference]: Finished difference Result 2178 states and 2832 transitions. [2020-09-25 12:21:41,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 12:21:41,778 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 165 [2020-09-25 12:21:41,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:41,788 INFO L225 Difference]: With dead ends: 2178 [2020-09-25 12:21:41,789 INFO L226 Difference]: Without dead ends: 1413 [2020-09-25 12:21:41,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:21:41,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2020-09-25 12:21:41,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1375. [2020-09-25 12:21:41,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1375 states. [2020-09-25 12:21:41,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1375 states to 1375 states and 1554 transitions. [2020-09-25 12:21:41,863 INFO L78 Accepts]: Start accepts. Automaton has 1375 states and 1554 transitions. Word has length 165 [2020-09-25 12:21:41,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:41,864 INFO L479 AbstractCegarLoop]: Abstraction has 1375 states and 1554 transitions. [2020-09-25 12:21:41,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:21:41,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1375 states and 1554 transitions. [2020-09-25 12:21:41,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 12:21:41,871 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:41,871 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:21:41,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:21:41,872 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:41,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:41,872 INFO L82 PathProgramCache]: Analyzing trace with hash -770413602, now seen corresponding path program 1 times [2020-09-25 12:21:41,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:41,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405263700] [2020-09-25 12:21:41,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:41,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:41,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:42,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:42,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:43,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:43,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:43,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:44,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:45,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:46,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:46,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:47,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:47,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 12:21:47,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 12:21:47,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-09-25 12:21:47,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:47,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:47,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:21:47,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 12:21:47,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 12:21:47,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:47,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:47,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:47,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:47,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:47,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:47,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:47,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:21:47,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:47,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:47,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:47,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:47,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:47,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:47,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:21:47,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:47,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:47,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:47,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 12:21:47,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:47,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 12:21:47,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:47,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:47,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:47,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:47,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:21:47,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:47,312 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:21:47,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405263700] [2020-09-25 12:21:47,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:47,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 12:21:47,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031193887] [2020-09-25 12:21:47,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:21:47,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:47,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:21:47,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:21:47,318 INFO L87 Difference]: Start difference. First operand 1375 states and 1554 transitions. Second operand 6 states. [2020-09-25 12:21:50,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:50,214 INFO L93 Difference]: Finished difference Result 3488 states and 4136 transitions. [2020-09-25 12:21:50,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 12:21:50,215 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2020-09-25 12:21:50,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:50,225 INFO L225 Difference]: With dead ends: 3488 [2020-09-25 12:21:50,225 INFO L226 Difference]: Without dead ends: 1812 [2020-09-25 12:21:50,230 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 12:21:50,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1812 states. [2020-09-25 12:21:50,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1812 to 1624. [2020-09-25 12:21:50,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1624 states. [2020-09-25 12:21:50,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 1867 transitions. [2020-09-25 12:21:50,286 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 1867 transitions. Word has length 165 [2020-09-25 12:21:50,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:50,287 INFO L479 AbstractCegarLoop]: Abstraction has 1624 states and 1867 transitions. [2020-09-25 12:21:50,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:21:50,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 1867 transitions. [2020-09-25 12:21:50,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 12:21:50,294 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:50,294 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:21:50,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:21:50,295 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:50,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:50,295 INFO L82 PathProgramCache]: Analyzing trace with hash -64061830, now seen corresponding path program 1 times [2020-09-25 12:21:50,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:50,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960528806] [2020-09-25 12:21:50,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:50,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:50,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:50,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:50,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:50,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:50,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:51,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:51,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:52,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:55,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:55,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 12:21:55,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:21:55,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 12:21:55,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:55,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:55,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:21:55,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-25 12:21:55,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 12:21:55,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:55,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:55,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:55,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:55,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:55,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:55,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:55,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:21:55,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:55,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:55,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:55,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:55,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:55,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:55,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:21:55,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:55,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:55,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:55,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 12:21:55,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:55,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 12:21:55,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:55,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:55,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:55,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:55,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 12:21:55,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:55,706 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:21:55,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960528806] [2020-09-25 12:21:55,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:55,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:21:55,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648328799] [2020-09-25 12:21:55,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:21:55,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:55,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:21:55,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:21:55,709 INFO L87 Difference]: Start difference. First operand 1624 states and 1867 transitions. Second operand 5 states. [2020-09-25 12:21:57,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:57,542 INFO L93 Difference]: Finished difference Result 4009 states and 4763 transitions. [2020-09-25 12:21:57,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:21:57,543 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-09-25 12:21:57,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:57,556 INFO L225 Difference]: With dead ends: 4009 [2020-09-25 12:21:57,556 INFO L226 Difference]: Without dead ends: 2409 [2020-09-25 12:21:57,562 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 12:21:57,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2409 states. [2020-09-25 12:21:57,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2409 to 1922. [2020-09-25 12:21:57,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1922 states. [2020-09-25 12:21:57,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1922 states to 1922 states and 2260 transitions. [2020-09-25 12:21:57,629 INFO L78 Accepts]: Start accepts. Automaton has 1922 states and 2260 transitions. Word has length 191 [2020-09-25 12:21:57,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:57,630 INFO L479 AbstractCegarLoop]: Abstraction has 1922 states and 2260 transitions. [2020-09-25 12:21:57,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:21:57,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1922 states and 2260 transitions. [2020-09-25 12:21:57,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-25 12:21:57,639 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:57,640 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 12:21:57,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:21:57,640 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:57,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:57,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1328956802, now seen corresponding path program 1 times [2020-09-25 12:21:57,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:57,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1104284277] [2020-09-25 12:21:57,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:57,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:57,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:57,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:57,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:58,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:58,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:58,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:58,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:59,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:59,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:00,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:02,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:02,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-09-25 12:22:02,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 12:22:02,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 12:22:02,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:02,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:02,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:22:02,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-09-25 12:22:02,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 12:22:02,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:22:03,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:03,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:03,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:03,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:03,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:03,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:03,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 12:22:03,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:03,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:03,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:22:03,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:03,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:22:03,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:03,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:22:03,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:03,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:03,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:03,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 12:22:03,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:03,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:22:03,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:03,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:03,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:22:03,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:03,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:22:03,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:03,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 12:22:03,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:03,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:03,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:03,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 12:22:03,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:03,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-09-25 12:22:03,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:03,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:03,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:22:03,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:03,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 12:22:03,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:22:03,681 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 12:22:03,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1104284277] [2020-09-25 12:22:03,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:22:03,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:22:03,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818757415] [2020-09-25 12:22:03,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:22:03,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:03,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:22:03,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:22:03,683 INFO L87 Difference]: Start difference. First operand 1922 states and 2260 transitions. Second operand 10 states. [2020-09-25 12:22:08,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:08,745 INFO L93 Difference]: Finished difference Result 4809 states and 5912 transitions. [2020-09-25 12:22:08,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 12:22:08,746 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 229 [2020-09-25 12:22:08,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:08,759 INFO L225 Difference]: With dead ends: 4809 [2020-09-25 12:22:08,759 INFO L226 Difference]: Without dead ends: 2526 [2020-09-25 12:22:08,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210 [2020-09-25 12:22:08,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2526 states. [2020-09-25 12:22:08,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2526 to 2213. [2020-09-25 12:22:08,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2213 states. [2020-09-25 12:22:08,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2213 states to 2213 states and 2585 transitions. [2020-09-25 12:22:08,827 INFO L78 Accepts]: Start accepts. Automaton has 2213 states and 2585 transitions. Word has length 229 [2020-09-25 12:22:08,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:08,828 INFO L479 AbstractCegarLoop]: Abstraction has 2213 states and 2585 transitions. [2020-09-25 12:22:08,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:22:08,828 INFO L276 IsEmpty]: Start isEmpty. Operand 2213 states and 2585 transitions. [2020-09-25 12:22:08,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-25 12:22:08,837 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:08,838 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 12:22:08,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:22:08,838 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:08,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:08,838 INFO L82 PathProgramCache]: Analyzing trace with hash 582092877, now seen corresponding path program 1 times [2020-09-25 12:22:08,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:08,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688745322] [2020-09-25 12:22:08,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:08,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:08,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:08,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:09,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:09,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:09,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:09,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:10,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:10,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking...