/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_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:25:38,434 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:25:38,438 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:25:38,463 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:25:38,463 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:25:38,464 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:25:38,466 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:25:38,468 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:25:38,469 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:25:38,470 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:25:38,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:25:38,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:25:38,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:25:38,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:25:38,475 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:25:38,476 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:25:38,477 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:25:38,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:25:38,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:25:38,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:25:38,483 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:25:38,484 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:25:38,485 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:25:38,486 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:25:38,489 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:25:38,489 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:25:38,489 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:25:38,490 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:25:38,491 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:25:38,492 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:25:38,492 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:25:38,493 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:25:38,494 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:25:38,495 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:25:38,496 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:25:38,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:25:38,497 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:25:38,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:25:38,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:25:38,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:25:38,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:25:38,500 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 12:25:38,527 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:25:38,527 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:25:38,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:25:38,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:25:38,529 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:25:38,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:25:38,529 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:25:38,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:25:38,529 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:25:38,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:25:38,530 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:25:38,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:25:38,530 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:25:38,530 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:25:38,531 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:25:38,531 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:25:38,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:25:38,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:25:38,531 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:25:38,535 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:25:38,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:25:38,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:25:38,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:25:38,536 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:25:38,536 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:25:38,536 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:25:38,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:25:38,536 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:25:38,541 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:25:38,541 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 12:25:39,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:25:39,067 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:25:39,071 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:25:39,074 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:25:39,075 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:25:39,076 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label58.c [2020-09-25 12:25:39,164 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8bd05b87/13b5ec7d211a48b79a2a7b9300a96e46/FLAG244bcea3c [2020-09-25 12:25:39,792 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:25:39,792 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label58.c [2020-09-25 12:25:39,808 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8bd05b87/13b5ec7d211a48b79a2a7b9300a96e46/FLAG244bcea3c [2020-09-25 12:25:40,022 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8bd05b87/13b5ec7d211a48b79a2a7b9300a96e46 [2020-09-25 12:25:40,037 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:25:40,043 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:25:40,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:25:40,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:25:40,048 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:25:40,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:25:40" (1/1) ... [2020-09-25 12:25:40,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d0614b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:40, skipping insertion in model container [2020-09-25 12:25:40,054 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:25:40" (1/1) ... [2020-09-25 12:25:40,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:25:40,123 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:25:40,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:25:40,618 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:25:40,872 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:25:40,909 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:25:40,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:40 WrapperNode [2020-09-25 12:25:40,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:25:40,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:25:40,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:25:40,915 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:25:40,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:40" (1/1) ... [2020-09-25 12:25:40,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:40" (1/1) ... [2020-09-25 12:25:40,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:40" (1/1) ... [2020-09-25 12:25:40,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:40" (1/1) ... [2020-09-25 12:25:41,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:40" (1/1) ... [2020-09-25 12:25:41,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:40" (1/1) ... [2020-09-25 12:25:41,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:40" (1/1) ... [2020-09-25 12:25:41,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:25:41,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:25:41,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:25:41,048 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:25:41,049 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:25:41,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:25:41,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:25:41,158 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:25:41,158 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:25:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:25:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:25:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:25:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:25:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:25:41,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:25:41,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:25:42,744 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:25:42,744 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:25:42,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:25:42 BoogieIcfgContainer [2020-09-25 12:25:42,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:25:42,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:25:42,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:25:42,758 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:25:42,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:25:40" (1/3) ... [2020-09-25 12:25:42,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e437f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:25:42, skipping insertion in model container [2020-09-25 12:25:42,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:40" (2/3) ... [2020-09-25 12:25:42,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e437f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:25:42, skipping insertion in model container [2020-09-25 12:25:42,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:25:42" (3/3) ... [2020-09-25 12:25:42,762 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label58.c [2020-09-25 12:25:42,774 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:25:42,785 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:25:42,805 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:25:42,841 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:25:42,841 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:25:42,841 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:25:42,841 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:25:42,842 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:25:42,842 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:25:42,842 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:25:42,842 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:25:42,873 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 12:25:42,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 12:25:42,894 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:42,895 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] [2020-09-25 12:25:42,896 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:42,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:42,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1064851622, now seen corresponding path program 1 times [2020-09-25 12:25:42,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:42,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967537662] [2020-09-25 12:25:42,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:43,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:43,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:43,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:43,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:44,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:45,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:46,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:46,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:47,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:48,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:48,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-25 12:25:48,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:25:48,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 12:25:48,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:48,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:48,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:25:48,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 12:25:48,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 12:25:48,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:25:48,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:48,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:48,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:48,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:48,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:48,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:48,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 12:25:48,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:48,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:48,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:25:48,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:48,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 12:25:48,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:48,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:25:48,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967537662] [2020-09-25 12:25:48,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:25:48,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:25:48,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152701048] [2020-09-25 12:25:48,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:25:48,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:48,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:25:48,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:25:48,564 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 12:25:50,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:50,811 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 12:25:50,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:25:50,815 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-09-25 12:25:50,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:50,854 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 12:25:50,855 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 12:25:50,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:25:50,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 12:25:50,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 12:25:50,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 12:25:50,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 12:25:50,979 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 129 [2020-09-25 12:25:50,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:50,981 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 12:25:50,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:25:50,981 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 12:25:50,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 12:25:50,991 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:50,995 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:25:50,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:25:50,996 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:50,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:50,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1321748602, now seen corresponding path program 1 times [2020-09-25 12:25:50,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:50,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1291687403] [2020-09-25 12:25:50,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:51,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:51,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:51,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:51,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:53,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:53,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:54,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:54,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:55,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:55,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:56,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:56,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 12:25:56,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 12:25:56,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-09-25 12:25:56,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:56,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:56,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:25:56,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 12:25:56,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 12:25:56,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:56,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:56,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:56,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:56,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:56,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:56,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:56,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:25:56,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:56,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:56,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:25:56,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:56,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:25:56,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 12:25:56,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:25:56,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:56,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:56,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:56,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 12:25:56,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:56,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:25:56,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:56,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:56,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:25:56,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:56,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 12:25:56,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:56,366 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:25:56,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1291687403] [2020-09-25 12:25:56,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:25:56,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:25:56,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518110645] [2020-09-25 12:25:56,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:25:56,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:56,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:25:56,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:25:56,372 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 12:25:58,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:58,506 INFO L93 Difference]: Finished difference Result 1806 states and 2276 transitions. [2020-09-25 12:25:58,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:25:58,507 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-09-25 12:25:58,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:58,514 INFO L225 Difference]: With dead ends: 1806 [2020-09-25 12:25:58,514 INFO L226 Difference]: Without dead ends: 1095 [2020-09-25 12:25:58,518 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 12:25:58,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2020-09-25 12:25:58,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1039. [2020-09-25 12:25:58,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2020-09-25 12:25:58,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1246 transitions. [2020-09-25 12:25:58,560 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1246 transitions. Word has length 147 [2020-09-25 12:25:58,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:58,561 INFO L479 AbstractCegarLoop]: Abstraction has 1039 states and 1246 transitions. [2020-09-25 12:25:58,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:25:58,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1246 transitions. [2020-09-25 12:25:58,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 12:25:58,565 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:58,566 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:25:58,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:25:58,566 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:58,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:58,567 INFO L82 PathProgramCache]: Analyzing trace with hash 2057686971, now seen corresponding path program 1 times [2020-09-25 12:25:58,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:58,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518179999] [2020-09-25 12:25:58,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:58,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:58,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:58,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:59,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:59,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:00,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:02,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:02,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:03,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:03,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 12:26:03,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:26:03,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 12:26:03,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:03,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:03,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:26:03,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 12:26:03,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 12:26:03,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:03,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:03,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:03,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:03,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:03,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:26:03,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:03,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:26:03,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:03,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:03,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:26:03,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:03,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:26:03,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:03,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:26:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:03,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:03,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:03,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:26:03,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:03,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 12:26:03,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:03,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:03,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:03,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:03,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:26:03,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:03,946 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:26:03,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518179999] [2020-09-25 12:26:03,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:03,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 12:26:03,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446020929] [2020-09-25 12:26:03,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:26:03,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:03,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:26:03,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:26:03,950 INFO L87 Difference]: Start difference. First operand 1039 states and 1246 transitions. Second operand 6 states. [2020-09-25 12:26:06,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:06,430 INFO L93 Difference]: Finished difference Result 2744 states and 3507 transitions. [2020-09-25 12:26:06,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 12:26:06,431 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2020-09-25 12:26:06,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:06,440 INFO L225 Difference]: With dead ends: 2744 [2020-09-25 12:26:06,440 INFO L226 Difference]: Without dead ends: 1727 [2020-09-25 12:26:06,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:26:06,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2020-09-25 12:26:06,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 1651. [2020-09-25 12:26:06,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1651 states. [2020-09-25 12:26:06,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 2036 transitions. [2020-09-25 12:26:06,495 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 2036 transitions. Word has length 153 [2020-09-25 12:26:06,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:06,496 INFO L479 AbstractCegarLoop]: Abstraction has 1651 states and 2036 transitions. [2020-09-25 12:26:06,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:26:06,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 2036 transitions. [2020-09-25 12:26:06,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 12:26:06,503 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:06,503 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 12:26:06,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:26:06,504 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:06,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:06,504 INFO L82 PathProgramCache]: Analyzing trace with hash -353718439, now seen corresponding path program 1 times [2020-09-25 12:26:06,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:06,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496487213] [2020-09-25 12:26:06,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:06,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:06,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:06,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:06,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:07,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:07,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:11,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:11,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-25 12:26:11,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:26:11,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 12:26:11,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:11,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:11,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:26:11,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-09-25 12:26:11,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 12:26:11,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:26:11,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:12,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:12,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:12,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:26:12,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:12,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 12:26:12,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:12,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:12,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:26:12,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:12,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:26:12,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:12,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:26:12,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:12,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:12,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:12,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:26:12,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:12,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:26:12,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:12,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:12,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:26:12,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:12,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:26:12,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:12,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 12:26:12,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:12,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:12,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:12,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:12,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:12,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 12:26:12,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:12,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:12,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:26:12,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:12,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:26:12,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:12,489 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 12:26:12,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1496487213] [2020-09-25 12:26:12,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:12,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 12:26:12,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228568017] [2020-09-25 12:26:12,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 12:26:12,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:12,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 12:26:12,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:26:12,496 INFO L87 Difference]: Start difference. First operand 1651 states and 2036 transitions. Second operand 14 states. [2020-09-25 12:26:17,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:17,299 INFO L93 Difference]: Finished difference Result 4700 states and 6088 transitions. [2020-09-25 12:26:17,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 12:26:17,300 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 175 [2020-09-25 12:26:17,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:17,318 INFO L225 Difference]: With dead ends: 4700 [2020-09-25 12:26:17,319 INFO L226 Difference]: Without dead ends: 3071 [2020-09-25 12:26:17,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=247, Invalid=455, Unknown=0, NotChecked=0, Total=702 [2020-09-25 12:26:17,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3071 states. [2020-09-25 12:26:17,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3071 to 3045. [2020-09-25 12:26:17,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3045 states. [2020-09-25 12:26:17,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3045 states to 3045 states and 3609 transitions. [2020-09-25 12:26:17,429 INFO L78 Accepts]: Start accepts. Automaton has 3045 states and 3609 transitions. Word has length 175 [2020-09-25 12:26:17,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:17,429 INFO L479 AbstractCegarLoop]: Abstraction has 3045 states and 3609 transitions. [2020-09-25 12:26:17,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 12:26:17,430 INFO L276 IsEmpty]: Start isEmpty. Operand 3045 states and 3609 transitions. [2020-09-25 12:26:17,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-09-25 12:26:17,441 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:17,441 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 12:26:17,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:26:17,442 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:17,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:17,443 INFO L82 PathProgramCache]: Analyzing trace with hash 782213054, now seen corresponding path program 1 times [2020-09-25 12:26:17,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:17,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [427595070] [2020-09-25 12:26:17,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:17,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:17,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:17,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:17,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:18,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:19,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:22,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:22,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-09-25 12:26:22,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:26:22,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 12:26:22,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:22,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:22,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:26:22,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 118 [2020-09-25 12:26:22,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 12:26:22,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:26:23,253 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 35 [2020-09-25 12:26:23,398 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 34 [2020-09-25 12:26:23,548 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 32 [2020-09-25 12:26:23,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:23,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:23,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:23,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:23,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:26:23,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:23,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 12:26:23,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:23,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:23,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:26:23,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:23,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:26:23,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:26:23,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:26:23,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:23,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:23,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:23,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 12:26:23,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:23,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 12:26:23,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:23,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:23,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:26:23,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:23,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:26:23,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:26:23,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 12:26:23,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:23,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:23,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:23,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 12:26:23,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:23,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 12:26:23,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:23,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:23,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:26:23,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:23,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 12:26:23,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:24,293 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-25 12:26:24,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [427595070] [2020-09-25 12:26:24,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:24,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 12:26:24,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753039599] [2020-09-25 12:26:24,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 12:26:24,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:24,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 12:26:24,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:26:24,296 INFO L87 Difference]: Start difference. First operand 3045 states and 3609 transitions. Second operand 14 states. [2020-09-25 12:26:26,505 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-09-25 12:26:27,386 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 85 [2020-09-25 12:26:27,804 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 84 [2020-09-25 12:26:28,809 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 83