/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 SequenceOfStatements --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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label16.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 08:33:05,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 08:33:05,429 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 08:33:05,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 08:33:05,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 08:33:05,457 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 08:33:05,458 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 08:33:05,460 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 08:33:05,462 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 08:33:05,463 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 08:33:05,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 08:33:05,465 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 08:33:05,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 08:33:05,467 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 08:33:05,468 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 08:33:05,469 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 08:33:05,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 08:33:05,471 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 08:33:05,473 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 08:33:05,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 08:33:05,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 08:33:05,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 08:33:05,485 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 08:33:05,486 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 08:33:05,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 08:33:05,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 08:33:05,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 08:33:05,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 08:33:05,493 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 08:33:05,496 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 08:33:05,496 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 08:33:05,499 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 08:33:05,499 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 08:33:05,502 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 08:33:05,503 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 08:33:05,503 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 08:33:05,504 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 08:33:05,504 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 08:33:05,504 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 08:33:05,506 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 08:33:05,509 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 08:33:05,510 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 [2020-10-13 08:33:05,570 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 08:33:05,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 08:33:05,572 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 08:33:05,572 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 08:33:05,572 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 08:33:05,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 08:33:05,573 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 08:33:05,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 08:33:05,573 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 08:33:05,576 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 08:33:05,577 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 08:33:05,577 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 08:33:05,577 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 08:33:05,577 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 08:33:05,577 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 08:33:05,578 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 08:33:05,578 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 08:33:05,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 08:33:05,579 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 08:33:05,579 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 08:33:05,579 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 08:33:05,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 08:33:05,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 08:33:05,580 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 08:33:05,580 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 08:33:05,581 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 08:33:05,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 08:33:05,581 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 08:33:05,582 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 08:33:05,582 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 -> SequenceOfStatements 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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 08:33:05,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 08:33:05,976 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 08:33:05,984 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 08:33:05,986 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 08:33:05,986 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 08:33:05,988 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label16.c [2020-10-13 08:33:06,059 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd9dbc2c7/667eb8b16915492eb4df8cb72b7b51fb/FLAG2789837be [2020-10-13 08:33:07,044 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 08:33:07,045 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label16.c [2020-10-13 08:33:07,100 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd9dbc2c7/667eb8b16915492eb4df8cb72b7b51fb/FLAG2789837be [2020-10-13 08:33:07,466 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd9dbc2c7/667eb8b16915492eb4df8cb72b7b51fb [2020-10-13 08:33:07,479 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 08:33:07,482 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 08:33:07,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 08:33:07,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 08:33:07,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 08:33:07,491 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:33:07" (1/1) ... [2020-10-13 08:33:07,496 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245d8fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:33:07, skipping insertion in model container [2020-10-13 08:33:07,496 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:33:07" (1/1) ... [2020-10-13 08:33:07,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 08:33:07,711 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 08:33:09,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:33:09,673 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 08:33:10,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 08:33:10,440 INFO L208 MainTranslator]: Completed translation [2020-10-13 08:33:10,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:33:10 WrapperNode [2020-10-13 08:33:10,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 08:33:10,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 08:33:10,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 08:33:10,442 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 08:33:10,459 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:33:10" (1/1) ... [2020-10-13 08:33:10,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:33:10" (1/1) ... [2020-10-13 08:33:10,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:33:10" (1/1) ... [2020-10-13 08:33:10,530 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:33:10" (1/1) ... [2020-10-13 08:33:10,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:33:10" (1/1) ... [2020-10-13 08:33:10,730 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:33:10" (1/1) ... [2020-10-13 08:33:10,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:33:10" (1/1) ... [2020-10-13 08:33:10,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 08:33:10,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 08:33:10,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 08:33:10,863 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 08:33:10,864 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:33:10" (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 [2020-10-13 08:33:10,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 08:33:10,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 08:33:10,949 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 08:33:10,949 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 08:33:10,950 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 08:33:10,950 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 08:33:10,950 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 08:33:10,952 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 08:33:10,952 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 08:33:10,952 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 08:33:10,952 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 08:33:10,952 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 08:33:10,953 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 08:33:10,953 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 08:33:10,953 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 08:33:10,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 08:33:10,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 08:33:23,050 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 08:33:23,052 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 08:33:23,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:33:23 BoogieIcfgContainer [2020-10-13 08:33:23,071 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 08:33:23,076 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 08:33:23,076 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 08:33:23,080 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 08:33:23,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:33:07" (1/3) ... [2020-10-13 08:33:23,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676258f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:33:23, skipping insertion in model container [2020-10-13 08:33:23,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:33:10" (2/3) ... [2020-10-13 08:33:23,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676258f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:33:23, skipping insertion in model container [2020-10-13 08:33:23,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:33:23" (3/3) ... [2020-10-13 08:33:23,091 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label16.c [2020-10-13 08:33:23,106 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 08:33:23,126 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 08:33:23,141 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 08:33:23,175 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 08:33:23,175 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 08:33:23,175 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 08:33:23,176 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 08:33:23,176 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 08:33:23,176 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 08:33:23,176 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 08:33:23,176 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 08:33:23,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-13 08:33:23,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-13 08:33:23,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:33:23,230 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] [2020-10-13 08:33:23,231 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:33:23,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:33:23,238 INFO L82 PathProgramCache]: Analyzing trace with hash -495994913, now seen corresponding path program 1 times [2020-10-13 08:33:23,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:33:23,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074471240] [2020-10-13 08:33:23,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:33:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:23,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:23,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:23,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 08:33:23,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:23,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 418 [2020-10-13 08:33:23,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:23,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 08:33:23,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 08:33:23,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 08:33:23,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 08:33:24,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:33:24,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:24,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:24,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:24,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:33:24,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:24,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 08:33:24,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:24,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:33:24,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:33:24,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 08:33:24,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:24,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:33:24,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074471240] [2020-10-13 08:33:24,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 08:33:24,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 08:33:24,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643405901] [2020-10-13 08:33:24,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 08:33:24,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:33:24,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 08:33:24,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 08:33:24,075 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-13 08:33:37,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:33:37,785 INFO L93 Difference]: Finished difference Result 3118 states and 5748 transitions. [2020-10-13 08:33:37,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:33:37,787 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-13 08:33:37,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:33:37,824 INFO L225 Difference]: With dead ends: 3118 [2020-10-13 08:33:37,824 INFO L226 Difference]: Without dead ends: 1935 [2020-10-13 08:33:37,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:33:37,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1935 states. [2020-10-13 08:33:37,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1935 to 1917. [2020-10-13 08:33:37,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1917 states. [2020-10-13 08:33:37,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1917 states to 1917 states and 2935 transitions. [2020-10-13 08:33:37,997 INFO L78 Accepts]: Start accepts. Automaton has 1917 states and 2935 transitions. Word has length 28 [2020-10-13 08:33:37,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:33:37,998 INFO L479 AbstractCegarLoop]: Abstraction has 1917 states and 2935 transitions. [2020-10-13 08:33:37,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 08:33:37,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1917 states and 2935 transitions. [2020-10-13 08:33:38,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 08:33:38,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:33:38,010 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:33:38,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 08:33:38,012 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:33:38,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:33:38,012 INFO L82 PathProgramCache]: Analyzing trace with hash 784865347, now seen corresponding path program 1 times [2020-10-13 08:33:38,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:33:38,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834816521] [2020-10-13 08:33:38,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:33:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:38,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:38,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:39,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:39,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:39,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 08:33:39,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:33:39,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1423 [2020-10-13 08:33:39,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:39,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:33:39,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 08:33:39,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 08:33:39,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:33:39,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:33:39,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:39,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:39,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:39,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:33:39,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:39,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 08:33:39,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:39,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:33:39,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:33:39,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:33:39,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 08:33:39,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:33:39,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:39,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:39,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:39,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:33:39,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:39,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-13 08:33:39,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:39,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:33:39,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:33:39,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 08:33:39,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:33:39,870 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:33:39,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834816521] [2020-10-13 08:33:39,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:33:39,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:33:39,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641554227] [2020-10-13 08:33:39,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:33:39,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:33:39,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:33:39,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:33:39,875 INFO L87 Difference]: Start difference. First operand 1917 states and 2935 transitions. Second operand 5 states. [2020-10-13 08:33:57,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:33:57,712 INFO L93 Difference]: Finished difference Result 5484 states and 8488 transitions. [2020-10-13 08:33:57,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:33:57,713 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-13 08:33:57,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:33:57,733 INFO L225 Difference]: With dead ends: 5484 [2020-10-13 08:33:57,734 INFO L226 Difference]: Without dead ends: 3573 [2020-10-13 08:33:57,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:33:57,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3573 states. [2020-10-13 08:33:57,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3573 to 3568. [2020-10-13 08:33:57,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3568 states. [2020-10-13 08:33:57,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3568 states to 3568 states and 5096 transitions. [2020-10-13 08:33:57,854 INFO L78 Accepts]: Start accepts. Automaton has 3568 states and 5096 transitions. Word has length 104 [2020-10-13 08:33:57,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:33:57,857 INFO L479 AbstractCegarLoop]: Abstraction has 3568 states and 5096 transitions. [2020-10-13 08:33:57,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:33:57,857 INFO L276 IsEmpty]: Start isEmpty. Operand 3568 states and 5096 transitions. [2020-10-13 08:33:57,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 08:33:57,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:33:57,867 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:33:57,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 08:33:57,868 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:33:57,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:33:57,868 INFO L82 PathProgramCache]: Analyzing trace with hash 734730743, now seen corresponding path program 1 times [2020-10-13 08:33:57,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:33:57,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268094832] [2020-10-13 08:33:57,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:33:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:58,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:58,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:58,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:59,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:59,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-13 08:33:59,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 08:33:59,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1234 [2020-10-13 08:33:59,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:59,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:33:59,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-13 08:33:59,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 08:33:59,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:59,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:33:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:59,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:59,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:59,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:33:59,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:59,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:33:59,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:59,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:33:59,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:33:59,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:33:59,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:59,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:33:59,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:33:59,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:33:59,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:33:59,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 08:33:59,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:33:59,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-13 08:33:59,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:33:59,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:33:59,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:33:59,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-13 08:33:59,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:33:59,532 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 08:33:59,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268094832] [2020-10-13 08:33:59,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:33:59,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:33:59,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455952075] [2020-10-13 08:33:59,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:33:59,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:33:59,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:33:59,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:33:59,535 INFO L87 Difference]: Start difference. First operand 3568 states and 5096 transitions. Second operand 5 states. [2020-10-13 08:34:17,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:34:17,577 INFO L93 Difference]: Finished difference Result 10417 states and 15090 transitions. [2020-10-13 08:34:17,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:34:17,579 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-13 08:34:17,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:34:17,617 INFO L225 Difference]: With dead ends: 10417 [2020-10-13 08:34:17,617 INFO L226 Difference]: Without dead ends: 6855 [2020-10-13 08:34:17,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:34:17,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6855 states. [2020-10-13 08:34:17,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6855 to 6850. [2020-10-13 08:34:17,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6850 states. [2020-10-13 08:34:17,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6850 states to 6850 states and 9598 transitions. [2020-10-13 08:34:17,841 INFO L78 Accepts]: Start accepts. Automaton has 6850 states and 9598 transitions. Word has length 121 [2020-10-13 08:34:17,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:34:17,844 INFO L479 AbstractCegarLoop]: Abstraction has 6850 states and 9598 transitions. [2020-10-13 08:34:17,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:34:17,844 INFO L276 IsEmpty]: Start isEmpty. Operand 6850 states and 9598 transitions. [2020-10-13 08:34:17,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-13 08:34:17,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:34:17,851 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:34:17,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 08:34:17,852 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:34:17,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:34:17,857 INFO L82 PathProgramCache]: Analyzing trace with hash 2031592771, now seen corresponding path program 1 times [2020-10-13 08:34:17,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:34:17,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019583804] [2020-10-13 08:34:17,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:34:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:17,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:18,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:18,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:19,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:20,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:21,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:21,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-13 08:34:21,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:34:21,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4025 [2020-10-13 08:34:21,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:21,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:34:21,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-13 08:34:21,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 08:34:21,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 08:34:22,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:34:22,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:22,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:22,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:22,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:34:22,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:34:22,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:34:22,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:22,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:34:22,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:34:22,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:34:22,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:34:22,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:34:22,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:22,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:22,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:22,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:34:22,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:34:22,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 08:34:22,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:22,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:34:22,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:34:22,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:34:22,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:34:22,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 08:34:22,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:22,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:22,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:22,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 08:34:22,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:34:22,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 08:34:22,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:22,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:34:22,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:34:22,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-13 08:34:22,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:34:22,388 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-13 08:34:22,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019583804] [2020-10-13 08:34:22,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:34:22,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 08:34:22,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904979840] [2020-10-13 08:34:22,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 08:34:22,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:34:22,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 08:34:22,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:34:22,394 INFO L87 Difference]: Start difference. First operand 6850 states and 9598 transitions. Second operand 6 states. [2020-10-13 08:34:36,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:34:36,325 INFO L93 Difference]: Finished difference Result 13715 states and 19234 transitions. [2020-10-13 08:34:36,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:34:36,327 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 173 [2020-10-13 08:34:36,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:34:36,365 INFO L225 Difference]: With dead ends: 13715 [2020-10-13 08:34:36,365 INFO L226 Difference]: Without dead ends: 6854 [2020-10-13 08:34:36,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 08:34:36,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6854 states. [2020-10-13 08:34:36,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6854 to 6850. [2020-10-13 08:34:36,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6850 states. [2020-10-13 08:34:36,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6850 states to 6850 states and 9594 transitions. [2020-10-13 08:34:36,629 INFO L78 Accepts]: Start accepts. Automaton has 6850 states and 9594 transitions. Word has length 173 [2020-10-13 08:34:36,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:34:36,631 INFO L479 AbstractCegarLoop]: Abstraction has 6850 states and 9594 transitions. [2020-10-13 08:34:36,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 08:34:36,631 INFO L276 IsEmpty]: Start isEmpty. Operand 6850 states and 9594 transitions. [2020-10-13 08:34:36,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-13 08:34:36,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:34:36,637 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:34:36,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 08:34:36,637 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:34:36,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:34:36,638 INFO L82 PathProgramCache]: Analyzing trace with hash 702424729, now seen corresponding path program 1 times [2020-10-13 08:34:36,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:34:36,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1661835919] [2020-10-13 08:34:36,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:34:36,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:36,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:36,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:37,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:38,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:38,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:41,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:41,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-13 08:34:41,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:34:41,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4818 [2020-10-13 08:34:41,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:41,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:34:41,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 207 [2020-10-13 08:34:41,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 08:34:41,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:34:41,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:34:41,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:41,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:41,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:41,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:34:41,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:34:41,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 08:34:41,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:41,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:34:41,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:34:41,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:34:41,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:34:41,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:34:41,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:41,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:41,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:41,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 08:34:41,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:34:41,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 08:34:41,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:41,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:34:41,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:34:41,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:34:41,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 08:34:41,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 08:34:41,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:34:41,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:34:41,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:34:41,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-13 08:34:41,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:34:41,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-13 08:34:41,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:34:41,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:34:41,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:34:41,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-13 08:34:41,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:34:42,038 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-13 08:34:42,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1661835919] [2020-10-13 08:34:42,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:34:42,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:34:42,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156286252] [2020-10-13 08:34:42,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:34:42,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:34:42,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:34:42,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:34:42,042 INFO L87 Difference]: Start difference. First operand 6850 states and 9594 transitions. Second operand 5 states. [2020-10-13 08:34:59,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:34:59,740 INFO L93 Difference]: Finished difference Result 13721 states and 19230 transitions. [2020-10-13 08:34:59,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:34:59,749 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 223 [2020-10-13 08:34:59,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:34:59,787 INFO L225 Difference]: With dead ends: 13721 [2020-10-13 08:34:59,788 INFO L226 Difference]: Without dead ends: 6854 [2020-10-13 08:34:59,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:34:59,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6854 states. [2020-10-13 08:34:59,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6854 to 6850. [2020-10-13 08:34:59,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6850 states. [2020-10-13 08:35:00,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6850 states to 6850 states and 9592 transitions. [2020-10-13 08:35:00,006 INFO L78 Accepts]: Start accepts. Automaton has 6850 states and 9592 transitions. Word has length 223 [2020-10-13 08:35:00,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:35:00,007 INFO L479 AbstractCegarLoop]: Abstraction has 6850 states and 9592 transitions. [2020-10-13 08:35:00,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:35:00,008 INFO L276 IsEmpty]: Start isEmpty. Operand 6850 states and 9592 transitions. [2020-10-13 08:35:00,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-13 08:35:00,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:35:00,014 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:35:00,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 08:35:00,015 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:35:00,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:35:00,015 INFO L82 PathProgramCache]: Analyzing trace with hash -2065657492, now seen corresponding path program 1 times [2020-10-13 08:35:00,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:35:00,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588973918] [2020-10-13 08:35:00,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:35:00,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:00,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:00,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:01,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:01,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:05,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:05,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-13 08:35:05,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 08:35:05,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-13 08:35:05,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:05,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:35:05,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-13 08:35:05,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 08:35:05,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:35:05,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:35:05,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:05,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:05,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:05,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:35:05,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:35:05,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 08:35:05,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:05,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:35:05,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:35:05,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:35:05,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:35:05,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:35:05,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:05,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:05,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:05,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:35:05,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:35:05,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 08:35:05,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:05,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:35:05,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:35:05,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:35:05,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:35:05,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 08:35:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:05,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:05,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:05,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 08:35:05,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:35:05,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-13 08:35:05,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:05,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:35:05,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:35:05,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-13 08:35:05,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:35:05,601 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-13 08:35:05,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588973918] [2020-10-13 08:35:05,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:35:05,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:35:05,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73383954] [2020-10-13 08:35:05,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:35:05,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:35:05,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:35:05,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:35:05,608 INFO L87 Difference]: Start difference. First operand 6850 states and 9592 transitions. Second operand 5 states. [2020-10-13 08:35:33,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:35:33,004 INFO L93 Difference]: Finished difference Result 16976 states and 24883 transitions. [2020-10-13 08:35:33,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:35:33,006 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 229 [2020-10-13 08:35:33,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:35:33,048 INFO L225 Difference]: With dead ends: 16976 [2020-10-13 08:35:33,049 INFO L226 Difference]: Without dead ends: 10132 [2020-10-13 08:35:33,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:35:33,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10132 states. [2020-10-13 08:35:33,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10132 to 10118. [2020-10-13 08:35:33,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10118 states. [2020-10-13 08:35:33,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10118 states to 10118 states and 14422 transitions. [2020-10-13 08:35:33,361 INFO L78 Accepts]: Start accepts. Automaton has 10118 states and 14422 transitions. Word has length 229 [2020-10-13 08:35:33,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:35:33,361 INFO L479 AbstractCegarLoop]: Abstraction has 10118 states and 14422 transitions. [2020-10-13 08:35:33,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:35:33,362 INFO L276 IsEmpty]: Start isEmpty. Operand 10118 states and 14422 transitions. [2020-10-13 08:35:33,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-13 08:35:33,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:35:33,369 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:35:33,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 08:35:33,370 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:35:33,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:35:33,370 INFO L82 PathProgramCache]: Analyzing trace with hash -150013186, now seen corresponding path program 1 times [2020-10-13 08:35:33,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:35:33,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317885150] [2020-10-13 08:35:33,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:35:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:33,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:33,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:33,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:35,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:36,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:38,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:38,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-13 08:35:38,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:35:38,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-13 08:35:38,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:38,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:35:38,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 240 [2020-10-13 08:35:38,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 08:35:38,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:35:38,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:35:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:38,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:38,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:38,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:35:38,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:35:38,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:35:38,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:38,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:35:38,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:35:38,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:35:38,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:35:38,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:35:38,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:38,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:38,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:38,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:35:38,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:35:38,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 08:35:38,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:38,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:35:38,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:35:38,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:35:38,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:35:38,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 08:35:38,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:35:38,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:35:38,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:35:38,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 08:35:38,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:35:38,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-13 08:35:38,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:35:38,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:35:38,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:35:38,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-13 08:35:38,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 08:35:39,107 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-13 08:35:39,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317885150] [2020-10-13 08:35:39,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:35:39,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:35:39,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096047871] [2020-10-13 08:35:39,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:35:39,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:35:39,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:35:39,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:35:39,113 INFO L87 Difference]: Start difference. First operand 10118 states and 14422 transitions. Second operand 5 states. [2020-10-13 08:36:02,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:36:02,116 INFO L93 Difference]: Finished difference Result 23498 states and 34675 transitions. [2020-10-13 08:36:02,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:36:02,126 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 256 [2020-10-13 08:36:02,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:36:02,179 INFO L225 Difference]: With dead ends: 23498 [2020-10-13 08:36:02,179 INFO L226 Difference]: Without dead ends: 13386 [2020-10-13 08:36:02,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:36:02,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13386 states. [2020-10-13 08:36:02,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13386 to 13376. [2020-10-13 08:36:02,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13376 states. [2020-10-13 08:36:02,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13376 states to 13376 states and 19728 transitions. [2020-10-13 08:36:02,570 INFO L78 Accepts]: Start accepts. Automaton has 13376 states and 19728 transitions. Word has length 256 [2020-10-13 08:36:02,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:36:02,571 INFO L479 AbstractCegarLoop]: Abstraction has 13376 states and 19728 transitions. [2020-10-13 08:36:02,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:36:02,571 INFO L276 IsEmpty]: Start isEmpty. Operand 13376 states and 19728 transitions. [2020-10-13 08:36:02,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-10-13 08:36:02,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:36:02,588 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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] [2020-10-13 08:36:02,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 08:36:02,589 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:36:02,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:36:02,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1368374848, now seen corresponding path program 1 times [2020-10-13 08:36:02,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:36:02,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [466631311] [2020-10-13 08:36:02,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:36:02,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:02,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:02,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:02,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:06,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:06,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:07,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:07,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 353 [2020-10-13 08:36:07,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:36:07,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-13 08:36:07,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:07,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:36:07,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 324 [2020-10-13 08:36:07,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 08:36:07,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:36:07,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:36:07,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:07,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:07,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:07,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:36:07,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:36:07,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:36:07,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:07,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:36:07,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:36:07,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:36:07,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:36:07,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:36:07,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:07,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:07,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:07,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:36:07,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:36:07,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 08:36:07,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:07,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:36:07,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:36:07,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:36:07,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:36:07,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 08:36:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:07,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:08,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:08,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 08:36:08,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:36:08,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 08:36:08,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:08,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:36:08,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:36:08,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:36:08,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:36:08,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-13 08:36:08,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:08,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:08,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:08,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 08:36:08,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:36:08,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-13 08:36:08,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:08,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 08:36:08,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:36:08,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-13 08:36:08,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 08:36:08,348 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 66 proven. 3 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2020-10-13 08:36:08,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [466631311] [2020-10-13 08:36:08,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 08:36:08,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 08:36:08,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649612655] [2020-10-13 08:36:08,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 08:36:08,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 08:36:08,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 08:36:08,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 08:36:08,352 INFO L87 Difference]: Start difference. First operand 13376 states and 19728 transitions. Second operand 5 states. [2020-10-13 08:36:45,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 08:36:45,729 INFO L93 Difference]: Finished difference Result 39877 states and 61169 transitions. [2020-10-13 08:36:45,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 08:36:45,732 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 339 [2020-10-13 08:36:45,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 08:36:45,884 INFO L225 Difference]: With dead ends: 39877 [2020-10-13 08:36:45,885 INFO L226 Difference]: Without dead ends: 26507 [2020-10-13 08:36:45,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 08:36:45,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26507 states. [2020-10-13 08:36:47,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26507 to 26447. [2020-10-13 08:36:47,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26447 states. [2020-10-13 08:36:47,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26447 states to 26447 states and 39056 transitions. [2020-10-13 08:36:47,879 INFO L78 Accepts]: Start accepts. Automaton has 26447 states and 39056 transitions. Word has length 339 [2020-10-13 08:36:47,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 08:36:47,880 INFO L479 AbstractCegarLoop]: Abstraction has 26447 states and 39056 transitions. [2020-10-13 08:36:47,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 08:36:47,880 INFO L276 IsEmpty]: Start isEmpty. Operand 26447 states and 39056 transitions. [2020-10-13 08:36:47,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2020-10-13 08:36:47,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 08:36:47,906 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 08:36:47,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 08:36:47,906 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 08:36:47,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 08:36:47,907 INFO L82 PathProgramCache]: Analyzing trace with hash 516469598, now seen corresponding path program 1 times [2020-10-13 08:36:47,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 08:36:47,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225612615] [2020-10-13 08:36:47,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 08:36:47,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:47,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:48,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:48,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:49,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:50,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:53,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:53,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 373 [2020-10-13 08:36:53,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 08:36:53,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-13 08:36:53,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:53,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 08:36:53,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 345 [2020-10-13 08:36:53,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 08:36:53,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:36:53,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 08:36:53,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:53,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:53,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:53,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 08:36:53,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:36:53,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 08:36:53,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:53,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:36:53,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:36:53,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:36:53,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 08:36:53,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 08:36:53,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 08:36:53,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 08:36:53,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 08:36:53,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 08:36:53,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 08:36:53,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 08:36:53,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 08:36:53,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 08:36:53,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 08:36:53,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 08:36:53,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0