/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_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:23:58,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:23:58,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:23:58,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:23:58,431 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:23:58,432 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:23:58,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:23:58,435 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:23:58,436 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:23:58,437 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:23:58,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:23:58,439 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:23:58,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:23:58,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:23:58,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:23:58,443 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:23:58,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:23:58,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:23:58,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:23:58,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:23:58,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:23:58,452 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:23:58,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:23:58,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:23:58,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:23:58,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:23:58,457 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:23:58,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:23:58,459 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:23:58,460 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:23:58,460 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:23:58,461 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:23:58,462 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:23:58,463 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:23:58,464 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:23:58,464 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:23:58,465 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:23:58,465 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:23:58,465 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:23:58,466 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:23:58,467 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:23:58,468 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 12:23:58,494 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:23:58,494 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:23:58,496 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:23:58,496 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:23:58,496 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:23:58,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:23:58,497 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:23:58,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:23:58,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:23:58,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:23:58,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:23:58,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:23:58,498 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:23:58,498 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:23:58,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:23:58,498 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:23:58,499 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:23:58,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:23:58,499 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:23:58,499 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:23:58,500 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:23:58,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:23:58,500 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:23:58,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:23:58,500 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:23:58,501 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:23:58,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:23:58,501 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:23:58,501 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:23:58,501 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 12:23:58,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:23:58,967 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:23:58,972 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:23:58,973 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:23:58,974 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:23:58,975 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label21.c [2020-09-25 12:23:59,046 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/66400dafb/d08c51406e50487db43adcfc42f5cf5d/FLAG43118b473 [2020-09-25 12:23:59,776 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:23:59,779 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label21.c [2020-09-25 12:23:59,796 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/66400dafb/d08c51406e50487db43adcfc42f5cf5d/FLAG43118b473 [2020-09-25 12:23:59,935 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/66400dafb/d08c51406e50487db43adcfc42f5cf5d [2020-09-25 12:23:59,947 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:23:59,953 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:23:59,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:23:59,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:23:59,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:23:59,960 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:23:59" (1/1) ... [2020-09-25 12:23:59,965 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3666d953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:59, skipping insertion in model container [2020-09-25 12:23:59,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:23:59" (1/1) ... [2020-09-25 12:23:59,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:24:00,038 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:24:00,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:24:00,491 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:24:00,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:24:00,776 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:24:00,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:00 WrapperNode [2020-09-25 12:24:00,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:24:00,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:24:00,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:24:00,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:24:00,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:00" (1/1) ... [2020-09-25 12:24:00,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:00" (1/1) ... [2020-09-25 12:24:00,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:00" (1/1) ... [2020-09-25 12:24:00,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:00" (1/1) ... [2020-09-25 12:24:00,850 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:00" (1/1) ... [2020-09-25 12:24:00,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:00" (1/1) ... [2020-09-25 12:24:00,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:00" (1/1) ... [2020-09-25 12:24:00,882 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:24:00,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:24:00,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:24:00,883 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:24:00,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:00" (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 12:24:00,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:24:00,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:24:00,959 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:24:00,959 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:24:00,959 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:24:00,959 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:24:00,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:24:00,960 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:24:00,960 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:24:00,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:24:00,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:24:02,264 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:24:02,265 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:24:02,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:24:02 BoogieIcfgContainer [2020-09-25 12:24:02,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:24:02,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:24:02,275 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:24:02,279 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:24:02,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:23:59" (1/3) ... [2020-09-25 12:24:02,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1a6de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:24:02, skipping insertion in model container [2020-09-25 12:24:02,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:24:00" (2/3) ... [2020-09-25 12:24:02,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1a6de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:24:02, skipping insertion in model container [2020-09-25 12:24:02,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:24:02" (3/3) ... [2020-09-25 12:24:02,284 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label21.c [2020-09-25 12:24:02,297 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:24:02,308 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:24:02,331 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:24:02,365 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:24:02,365 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:24:02,365 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:24:02,366 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:24:02,366 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:24:02,366 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:24:02,366 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:24:02,366 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:24:02,398 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 12:24:02,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-25 12:24:02,418 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:24:02,420 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] [2020-09-25 12:24:02,420 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:24:02,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:24:02,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1196465745, now seen corresponding path program 1 times [2020-09-25 12:24:02,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:24:02,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606475125] [2020-09-25 12:24:02,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:24:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:02,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:03,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:03,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:04,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:04,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:05,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:05,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:07,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:07,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 12:24:07,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:24:07,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 12:24:07,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:07,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:07,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:24:07,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 12:24:07,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 12:24:07,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:24:07,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:24:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:07,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:07,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:07,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:24:07,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:24:07,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 12:24:07,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:07,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:07,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:24:07,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:24:07,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 12:24:07,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 20 [2020-09-25 12:24:08,020 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 12:24:08,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606475125] [2020-09-25 12:24:08,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:24:08,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:24:08,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423981341] [2020-09-25 12:24:08,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:24:08,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:24:08,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:24:08,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:24:08,052 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 12:24:09,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:24:09,968 INFO L93 Difference]: Finished difference Result 1205 states and 1651 transitions. [2020-09-25 12:24:09,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:24:09,972 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-09-25 12:24:09,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:24:10,013 INFO L225 Difference]: With dead ends: 1205 [2020-09-25 12:24:10,013 INFO L226 Difference]: Without dead ends: 627 [2020-09-25 12:24:10,027 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 12:24:10,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-09-25 12:24:10,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 613. [2020-09-25 12:24:10,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-09-25 12:24:10,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 774 transitions. [2020-09-25 12:24:10,138 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 774 transitions. Word has length 122 [2020-09-25 12:24:10,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:24:10,139 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 774 transitions. [2020-09-25 12:24:10,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:24:10,140 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 774 transitions. [2020-09-25 12:24:10,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 12:24:10,150 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:24:10,150 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 12:24:10,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:24:10,151 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:24:10,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:24:10,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1331654230, now seen corresponding path program 1 times [2020-09-25 12:24:10,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:24:10,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168811417] [2020-09-25 12:24:10,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:24:10,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:10,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:10,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:10,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:10,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:13,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:13,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:13,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 12:24:13,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:24:13,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3557 [2020-09-25 12:24:13,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:13,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:13,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:24:13,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 12:24:13,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-25 12:24:13,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:13,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:24:13,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:13,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:13,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:13,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:24:13,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:24:13,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:24:13,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:13,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:13,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:24:13,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:24:13,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:24:13,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:13,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:24:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:13,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:13,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:13,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 12:24:13,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:24:13,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 12:24:13,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:13,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:13,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:24:13,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:24:13,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:24:13,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:13,970 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:24:13,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168811417] [2020-09-25 12:24:13,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:24:13,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:24:13,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641592558] [2020-09-25 12:24:13,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:24:13,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:24:13,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:24:13,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:24:13,975 INFO L87 Difference]: Start difference. First operand 613 states and 774 transitions. Second operand 5 states. [2020-09-25 12:24:16,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:24:16,078 INFO L93 Difference]: Finished difference Result 1545 states and 2047 transitions. [2020-09-25 12:24:16,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:24:16,081 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-09-25 12:24:16,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:24:16,089 INFO L225 Difference]: With dead ends: 1545 [2020-09-25 12:24:16,089 INFO L226 Difference]: Without dead ends: 954 [2020-09-25 12:24:16,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:24:16,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2020-09-25 12:24:16,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 919. [2020-09-25 12:24:16,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 919 states. [2020-09-25 12:24:16,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1119 transitions. [2020-09-25 12:24:16,144 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1119 transitions. Word has length 148 [2020-09-25 12:24:16,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:24:16,145 INFO L479 AbstractCegarLoop]: Abstraction has 919 states and 1119 transitions. [2020-09-25 12:24:16,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:24:16,145 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1119 transitions. [2020-09-25 12:24:16,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 12:24:16,152 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:24:16,153 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:24:16,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:24:16,153 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:24:16,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:24:16,154 INFO L82 PathProgramCache]: Analyzing trace with hash -578383540, now seen corresponding path program 1 times [2020-09-25 12:24:16,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:24:16,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371373827] [2020-09-25 12:24:16,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:24:16,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:16,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:16,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:16,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:16,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:16,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:16,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:20,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:20,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:21,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:21,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 12:24:21,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:24:21,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:24:21,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:21,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:21,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:24:21,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 12:24:21,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 12:24:21,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:21,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:24:21,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:21,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:21,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:21,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:24:21,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:24:21,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:24:21,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:21,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:21,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:24:21,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:24:21,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:24:21,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:21,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:24:21,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:21,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:21,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:21,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 12:24:21,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:24:21,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 12:24:21,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:21,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:21,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:24:21,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:24:21,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 12:24:21,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:24:21,455 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:24:21,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371373827] [2020-09-25 12:24:21,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:24:21,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:24:21,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541008476] [2020-09-25 12:24:21,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:24:21,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:24:21,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:24:21,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:24:21,460 INFO L87 Difference]: Start difference. First operand 919 states and 1119 transitions. Second operand 5 states. [2020-09-25 12:24:23,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:24:23,735 INFO L93 Difference]: Finished difference Result 2364 states and 2986 transitions. [2020-09-25 12:24:23,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:24:23,736 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-25 12:24:23,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:24:23,748 INFO L225 Difference]: With dead ends: 2364 [2020-09-25 12:24:23,748 INFO L226 Difference]: Without dead ends: 1467 [2020-09-25 12:24:23,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:24:23,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1467 states. [2020-09-25 12:24:23,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1467 to 1259. [2020-09-25 12:24:23,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1259 states. [2020-09-25 12:24:23,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 1510 transitions. [2020-09-25 12:24:23,808 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 1510 transitions. Word has length 156 [2020-09-25 12:24:23,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:24:23,809 INFO L479 AbstractCegarLoop]: Abstraction has 1259 states and 1510 transitions. [2020-09-25 12:24:23,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:24:23,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 1510 transitions. [2020-09-25 12:24:23,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 12:24:23,815 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:24:23,815 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:24:23,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:24:23,815 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:24:23,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:24:23,816 INFO L82 PathProgramCache]: Analyzing trace with hash 931685273, now seen corresponding path program 1 times [2020-09-25 12:24:23,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:24:23,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423284363] [2020-09-25 12:24:23,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:24:23,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:23,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:23,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:24,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:25,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:26,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:27,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:27,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:28,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:28,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 12:24:28,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:24:28,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 12:24:28,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:28,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:28,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:24:28,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-25 12:24:28,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 12:24:28,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:28,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:24:28,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:28,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:28,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:28,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:24:28,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:24:28,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 12:24:28,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:28,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:28,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:24:28,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:24:28,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:24:28,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:28,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:24:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:29,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:29,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:29,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 12:24:29,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:24:29,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 12:24:29,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:29,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:29,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:24:29,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:24:29,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 12:24:29,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:29,094 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:24:29,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423284363] [2020-09-25 12:24:29,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:24:29,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:24:29,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296695326] [2020-09-25 12:24:29,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:24:29,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:24:29,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:24:29,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:24:29,100 INFO L87 Difference]: Start difference. First operand 1259 states and 1510 transitions. Second operand 5 states. [2020-09-25 12:24:30,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:24:30,911 INFO L93 Difference]: Finished difference Result 3121 states and 3894 transitions. [2020-09-25 12:24:30,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:24:30,912 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-09-25 12:24:30,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:24:30,923 INFO L225 Difference]: With dead ends: 3121 [2020-09-25 12:24:30,923 INFO L226 Difference]: Without dead ends: 1535 [2020-09-25 12:24:30,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:24:30,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2020-09-25 12:24:30,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 1363. [2020-09-25 12:24:30,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1363 states. [2020-09-25 12:24:30,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1612 transitions. [2020-09-25 12:24:30,984 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1612 transitions. Word has length 160 [2020-09-25 12:24:30,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:24:30,984 INFO L479 AbstractCegarLoop]: Abstraction has 1363 states and 1612 transitions. [2020-09-25 12:24:30,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:24:30,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1612 transitions. [2020-09-25 12:24:30,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 12:24:30,992 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:24:30,992 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:24:30,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:24:30,992 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:24:30,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:24:30,993 INFO L82 PathProgramCache]: Analyzing trace with hash -2120706846, now seen corresponding path program 1 times [2020-09-25 12:24:30,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:24:30,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411499190] [2020-09-25 12:24:30,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:24:31,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:31,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:31,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:31,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:32,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:32,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:33,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:34,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:34,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-25 12:24:34,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:24:34,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3605 [2020-09-25 12:24:34,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:34,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:34,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:24:34,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 12:24:34,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-09-25 12:24:34,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:24:34,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:24:34,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:34,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:34,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:34,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:24:34,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:24:34,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 12:24:34,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:34,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:34,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:24:34,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:24:34,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 12:24:34,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:34,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:24:34,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:34,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:34,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:34,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:34,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 12:24:34,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:24:34,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 12:24:34,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:34,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:34,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:24:34,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:24:34,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 12:24:34,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:34,993 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 12:24:34,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411499190] [2020-09-25 12:24:34,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:24:34,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 12:24:34,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420933200] [2020-09-25 12:24:34,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:24:34,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:24:34,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:24:34,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:24:34,995 INFO L87 Difference]: Start difference. First operand 1363 states and 1612 transitions. Second operand 6 states. [2020-09-25 12:24:36,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:24:36,894 INFO L93 Difference]: Finished difference Result 3217 states and 3897 transitions. [2020-09-25 12:24:36,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 12:24:36,896 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 173 [2020-09-25 12:24:36,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:24:36,906 INFO L225 Difference]: With dead ends: 3217 [2020-09-25 12:24:36,906 INFO L226 Difference]: Without dead ends: 1876 [2020-09-25 12:24:36,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:24:36,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1876 states. [2020-09-25 12:24:36,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1876 to 1827. [2020-09-25 12:24:36,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1827 states. [2020-09-25 12:24:36,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1827 states to 1827 states and 2138 transitions. [2020-09-25 12:24:36,971 INFO L78 Accepts]: Start accepts. Automaton has 1827 states and 2138 transitions. Word has length 173 [2020-09-25 12:24:36,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:24:36,972 INFO L479 AbstractCegarLoop]: Abstraction has 1827 states and 2138 transitions. [2020-09-25 12:24:36,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:24:36,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1827 states and 2138 transitions. [2020-09-25 12:24:36,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-25 12:24:36,987 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:24:36,988 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:24:36,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:24:36,988 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:24:36,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:24:36,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1865147849, now seen corresponding path program 1 times [2020-09-25 12:24:36,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:24:36,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1638911794] [2020-09-25 12:24:36,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:24:37,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:37,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:37,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:37,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:37,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:38,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:39,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:41,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:41,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:41,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:41,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-09-25 12:24:41,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:24:41,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4502 [2020-09-25 12:24:41,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:41,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:41,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:24:41,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 12:24:41,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-09-25 12:24:41,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:41,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:24:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:41,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:41,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:41,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:24:41,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:24:41,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 12:24:41,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:41,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:41,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:24:41,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:24:41,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:24:41,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:24:41,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:24:41,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:41,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:41,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:41,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:24:41,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:24:41,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:24:41,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:41,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:41,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:24:41,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:24:41,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 12:24:41,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:24:41,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 12:24:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:41,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:41,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:41,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:41,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 12:24:41,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:24:41,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 12:24:41,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:41,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:41,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:24:41,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:24:41,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 12:24:41,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:24:41,898 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 18 proven. 39 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 12:24:41,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1638911794] [2020-09-25 12:24:41,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:24:41,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 12:24:41,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730195179] [2020-09-25 12:24:41,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:24:41,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:24:41,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:24:41,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:24:41,901 INFO L87 Difference]: Start difference. First operand 1827 states and 2138 transitions. Second operand 6 states. [2020-09-25 12:24:43,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:24:43,867 INFO L93 Difference]: Finished difference Result 4123 states and 4927 transitions. [2020-09-25 12:24:43,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 12:24:43,868 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 190 [2020-09-25 12:24:43,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:24:43,877 INFO L225 Difference]: With dead ends: 4123 [2020-09-25 12:24:43,877 INFO L226 Difference]: Without dead ends: 2136 [2020-09-25 12:24:43,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:24:43,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2136 states. [2020-09-25 12:24:43,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2136 to 2113. [2020-09-25 12:24:43,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2113 states. [2020-09-25 12:24:43,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 2443 transitions. [2020-09-25 12:24:43,940 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 2443 transitions. Word has length 190 [2020-09-25 12:24:43,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:24:43,940 INFO L479 AbstractCegarLoop]: Abstraction has 2113 states and 2443 transitions. [2020-09-25 12:24:43,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:24:43,941 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 2443 transitions. [2020-09-25 12:24:43,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-09-25 12:24:43,949 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:24:43,949 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:24:43,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:24:43,950 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:24:43,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:24:43,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1587476207, now seen corresponding path program 1 times [2020-09-25 12:24:43,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:24:43,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003089374] [2020-09-25 12:24:43,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:24:43,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:44,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:44,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:44,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:44,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:45,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:47,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:47,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking...