/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:43:19,474 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:43:19,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:43:19,524 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:43:19,524 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:43:19,532 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:43:19,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:43:19,538 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:43:19,541 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:43:19,544 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:43:19,545 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:43:19,546 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:43:19,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:43:19,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:43:19,552 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:43:19,554 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:43:19,555 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:43:19,556 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:43:19,558 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:43:19,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:43:19,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:43:19,570 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:43:19,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:43:19,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:43:19,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:43:19,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:43:19,589 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:43:19,590 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:43:19,590 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:43:19,594 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:43:19,595 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:43:19,599 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:43:19,600 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:43:19,601 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:43:19,603 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:43:19,603 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:43:19,604 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:43:19,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:43:19,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:43:19,606 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:43:19,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:43:19,608 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 06:43:19,652 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:43:19,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:43:19,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:43:19,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:43:19,655 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:43:19,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:43:19,656 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:43:19,656 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:43:19,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:43:19,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:43:19,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:43:19,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:43:19,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:43:19,659 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:43:19,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:43:19,659 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:43:19,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:43:19,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:43:19,660 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:43:19,660 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:43:19,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:43:19,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:43:19,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:43:19,661 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:43:19,661 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:43:19,661 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:43:19,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:43:19,662 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:43:19,662 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:43:19,662 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:43:20,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:43:20,159 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:43:20,163 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:43:20,165 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:43:20,166 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:43:20,167 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label56.c [2020-09-25 06:43:20,262 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c0f5ea55/7e98c896f66f4dfd870da10434c79f1f/FLAG4d0ce922e [2020-09-25 06:43:20,884 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:43:20,885 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label56.c [2020-09-25 06:43:20,899 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c0f5ea55/7e98c896f66f4dfd870da10434c79f1f/FLAG4d0ce922e [2020-09-25 06:43:21,131 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c0f5ea55/7e98c896f66f4dfd870da10434c79f1f [2020-09-25 06:43:21,147 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:43:21,156 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:43:21,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:43:21,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:43:21,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:43:21,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:43:21" (1/1) ... [2020-09-25 06:43:21,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12391971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:21, skipping insertion in model container [2020-09-25 06:43:21,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:43:21" (1/1) ... [2020-09-25 06:43:21,182 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:43:21,250 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:43:21,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:43:21,850 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:43:21,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:43:21,992 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:43:21,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:21 WrapperNode [2020-09-25 06:43:21,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:43:21,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:43:21,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:43:21,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:43:22,013 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:21" (1/1) ... [2020-09-25 06:43:22,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:21" (1/1) ... [2020-09-25 06:43:22,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:21" (1/1) ... [2020-09-25 06:43:22,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:21" (1/1) ... [2020-09-25 06:43:22,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:21" (1/1) ... [2020-09-25 06:43:22,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:21" (1/1) ... [2020-09-25 06:43:22,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:21" (1/1) ... [2020-09-25 06:43:22,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:43:22,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:43:22,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:43:22,123 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:43:22,125 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:43:22,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:43:22,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:43:22,239 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:43:22,239 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:43:22,239 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:43:22,239 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:43:22,240 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:43:22,241 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:43:22,241 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:43:22,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:43:22,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:43:23,655 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:43:23,655 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:43:23,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:43:23 BoogieIcfgContainer [2020-09-25 06:43:23,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:43:23,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:43:23,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:43:23,671 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:43:23,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:43:21" (1/3) ... [2020-09-25 06:43:23,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2543eee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:43:23, skipping insertion in model container [2020-09-25 06:43:23,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:43:21" (2/3) ... [2020-09-25 06:43:23,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2543eee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:43:23, skipping insertion in model container [2020-09-25 06:43:23,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:43:23" (3/3) ... [2020-09-25 06:43:23,676 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label56.c [2020-09-25 06:43:23,689 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:43:23,701 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:43:23,726 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:43:23,770 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:43:23,770 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:43:23,770 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:43:23,770 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:43:23,770 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:43:23,771 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:43:23,771 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:43:23,771 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:43:23,805 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 06:43:23,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-25 06:43:23,827 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:23,830 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:43:23,830 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:23,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:23,839 INFO L82 PathProgramCache]: Analyzing trace with hash 602782831, now seen corresponding path program 1 times [2020-09-25 06:43:23,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:23,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457045145] [2020-09-25 06:43:23,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:24,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:24,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:24,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:25,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:27,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:27,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:27,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:29,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:29,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-09-25 06:43:29,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:43:29,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 06:43:29,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:29,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:29,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:43:29,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:43:29,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 06:43:29,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:43:29,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:29,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:29,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:29,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:29,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:29,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:29,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 06:43:29,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:29,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:29,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:29,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:29,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:43:29,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:29,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:43:29,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457045145] [2020-09-25 06:43:29,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:43:29,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:43:29,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656506686] [2020-09-25 06:43:29,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:43:29,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:29,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:43:29,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:43:29,487 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 06:43:29,708 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-09-25 06:43:31,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:31,900 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 06:43:31,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:43:31,902 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-09-25 06:43:31,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:31,944 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 06:43:31,945 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 06:43:31,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:43:31,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 06:43:32,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 06:43:32,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 06:43:32,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 06:43:32,072 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 104 [2020-09-25 06:43:32,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:32,073 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 06:43:32,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:43:32,074 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 06:43:32,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-09-25 06:43:32,085 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:32,085 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 06:43:32,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:43:32,086 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:32,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:32,087 INFO L82 PathProgramCache]: Analyzing trace with hash -435684201, now seen corresponding path program 1 times [2020-09-25 06:43:32,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:32,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562690920] [2020-09-25 06:43:32,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:32,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:32,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:32,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:32,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:33,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:36,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:36,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:36,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:37,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:37,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:37,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-25 06:43:37,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:43:37,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5127 [2020-09-25 06:43:37,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:37,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:37,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:37,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 06:43:37,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 06:43:37,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:37,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:37,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:37,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:37,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:37,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:37,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:43:37,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:37,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:37,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:37,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:37,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:37,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:37,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:37,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:37,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:37,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:37,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:43:37,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:37,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 06:43:37,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:37,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:37,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:37,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:37,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:43:37,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:37,484 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:43:37,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562690920] [2020-09-25 06:43:37,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:43:37,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:43:37,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910139829] [2020-09-25 06:43:37,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:43:37,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:37,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:43:37,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:43:37,488 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 5 states. [2020-09-25 06:43:39,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:39,940 INFO L93 Difference]: Finished difference Result 1561 states and 1929 transitions. [2020-09-25 06:43:39,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:43:39,941 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-09-25 06:43:39,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:39,950 INFO L225 Difference]: With dead ends: 1561 [2020-09-25 06:43:39,950 INFO L226 Difference]: Without dead ends: 982 [2020-09-25 06:43:39,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:43:39,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2020-09-25 06:43:40,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 748. [2020-09-25 06:43:40,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 748 states. [2020-09-25 06:43:40,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 905 transitions. [2020-09-25 06:43:40,023 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 905 transitions. Word has length 125 [2020-09-25 06:43:40,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:40,024 INFO L479 AbstractCegarLoop]: Abstraction has 748 states and 905 transitions. [2020-09-25 06:43:40,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:43:40,024 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 905 transitions. [2020-09-25 06:43:40,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 06:43:40,031 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:40,031 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 06:43:40,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:43:40,032 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:40,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:40,032 INFO L82 PathProgramCache]: Analyzing trace with hash 305762680, now seen corresponding path program 1 times [2020-09-25 06:43:40,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:40,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752533978] [2020-09-25 06:43:40,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:40,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:40,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:40,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:40,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:40,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:40,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:40,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:40,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:41,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:45,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:45,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 06:43:45,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:43:45,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 06:43:45,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:45,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:45,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:45,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 06:43:45,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-25 06:43:45,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:45,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:45,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:45,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:45,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:45,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:45,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:45,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:43:45,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:45,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:45,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:45,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:45,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:45,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:45,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:45,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:45,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:45,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:45,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 06:43:45,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:45,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 06:43:45,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:45,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:45,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:45,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:45,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:43:45,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:45,367 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:43:45,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752533978] [2020-09-25 06:43:45,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:43:45,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:43:45,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730617624] [2020-09-25 06:43:45,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:43:45,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:45,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:43:45,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:43:45,373 INFO L87 Difference]: Start difference. First operand 748 states and 905 transitions. Second operand 5 states. [2020-09-25 06:43:47,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:47,361 INFO L93 Difference]: Finished difference Result 1957 states and 2468 transitions. [2020-09-25 06:43:47,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:43:47,363 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-09-25 06:43:47,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:47,370 INFO L225 Difference]: With dead ends: 1957 [2020-09-25 06:43:47,371 INFO L226 Difference]: Without dead ends: 1233 [2020-09-25 06:43:47,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:43:47,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2020-09-25 06:43:47,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 1177. [2020-09-25 06:43:47,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1177 states. [2020-09-25 06:43:47,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1466 transitions. [2020-09-25 06:43:47,422 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1466 transitions. Word has length 134 [2020-09-25 06:43:47,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:47,423 INFO L479 AbstractCegarLoop]: Abstraction has 1177 states and 1466 transitions. [2020-09-25 06:43:47,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:43:47,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1466 transitions. [2020-09-25 06:43:47,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 06:43:47,429 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:47,429 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:43:47,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:43:47,430 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:47,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:47,430 INFO L82 PathProgramCache]: Analyzing trace with hash 752263732, now seen corresponding path program 1 times [2020-09-25 06:43:47,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:47,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316174262] [2020-09-25 06:43:47,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:47,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:47,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:47,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:47,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:48,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:48,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:48,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:50,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:51,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:52,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:52,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:52,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 06:43:52,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 06:43:52,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5088 [2020-09-25 06:43:52,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:52,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:52,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:52,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 06:43:52,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-25 06:43:52,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 06:43:52,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:52,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:52,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:52,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:52,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:52,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:52,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:43:52,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:52,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:52,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:52,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:52,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:52,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:52,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:52,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:52,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:52,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:52,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:52,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:52,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 06:43:52,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:52,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:52,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:52,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:52,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 06:43:52,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:52,778 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:43:52,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316174262] [2020-09-25 06:43:52,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:43:52,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:43:52,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315411290] [2020-09-25 06:43:52,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:43:52,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:52,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:43:52,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:43:52,782 INFO L87 Difference]: Start difference. First operand 1177 states and 1466 transitions. Second operand 5 states. [2020-09-25 06:43:54,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:54,734 INFO L93 Difference]: Finished difference Result 2982 states and 3833 transitions. [2020-09-25 06:43:54,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:43:54,734 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-09-25 06:43:54,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:54,753 INFO L225 Difference]: With dead ends: 2982 [2020-09-25 06:43:54,754 INFO L226 Difference]: Without dead ends: 1829 [2020-09-25 06:43:54,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:43:54,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1829 states. [2020-09-25 06:43:54,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1829 to 1463. [2020-09-25 06:43:54,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1463 states. [2020-09-25 06:43:54,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 1883 transitions. [2020-09-25 06:43:54,847 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 1883 transitions. Word has length 135 [2020-09-25 06:43:54,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:54,848 INFO L479 AbstractCegarLoop]: Abstraction has 1463 states and 1883 transitions. [2020-09-25 06:43:54,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:43:54,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 1883 transitions. [2020-09-25 06:43:54,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 06:43:54,858 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:54,858 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:43:54,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:43:54,859 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:54,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:54,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1060590272, now seen corresponding path program 1 times [2020-09-25 06:43:54,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:54,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200397605] [2020-09-25 06:43:54,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:54,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:54,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:54,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:55,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:55,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:56,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:57,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:59,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:59,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:59,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:59,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 06:43:59,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:43:59,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 06:43:59,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:59,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:59,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:59,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 06:43:59,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 06:43:59,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:59,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:59,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:00,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:00,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:00,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:44:00,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:00,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:44:00,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:00,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:00,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:00,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:00,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:00,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:00,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:44:00,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:00,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:00,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:00,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 06:44:00,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:00,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 06:44:00,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:00,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:00,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:00,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:00,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 06:44:00,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:00,155 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:44:00,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200397605] [2020-09-25 06:44:00,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:00,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:44:00,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137827194] [2020-09-25 06:44:00,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:44:00,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:00,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:44:00,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:44:00,158 INFO L87 Difference]: Start difference. First operand 1463 states and 1883 transitions. Second operand 5 states. [2020-09-25 06:44:01,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:01,737 INFO L93 Difference]: Finished difference Result 3789 states and 5075 transitions. [2020-09-25 06:44:01,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:44:01,748 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-09-25 06:44:01,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:01,765 INFO L225 Difference]: With dead ends: 3789 [2020-09-25 06:44:01,766 INFO L226 Difference]: Without dead ends: 2350 [2020-09-25 06:44:01,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:44:01,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2350 states. [2020-09-25 06:44:01,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2350 to 1751. [2020-09-25 06:44:01,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1751 states. [2020-09-25 06:44:01,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1751 states to 1751 states and 2244 transitions. [2020-09-25 06:44:01,850 INFO L78 Accepts]: Start accepts. Automaton has 1751 states and 2244 transitions. Word has length 141 [2020-09-25 06:44:01,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:01,850 INFO L479 AbstractCegarLoop]: Abstraction has 1751 states and 2244 transitions. [2020-09-25 06:44:01,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:44:01,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1751 states and 2244 transitions. [2020-09-25 06:44:01,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 06:44:01,859 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:01,859 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:44:01,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:44:01,860 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:01,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:01,860 INFO L82 PathProgramCache]: Analyzing trace with hash -620063423, now seen corresponding path program 1 times [2020-09-25 06:44:01,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:01,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665793746] [2020-09-25 06:44:01,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:01,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:01,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:02,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:02,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:02,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:04,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:06,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:06,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:06,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 06:44:06,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:44:06,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 06:44:06,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:06,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:06,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:06,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-25 06:44:06,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 06:44:06,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:07,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:07,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:07,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:07,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:07,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:44:07,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:07,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:44:07,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:07,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:07,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:07,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:07,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:07,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:07,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:44:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:07,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:07,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:07,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 06:44:07,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:07,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 06:44:07,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:07,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:07,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:07,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:07,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 06:44:07,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:07,167 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:44:07,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665793746] [2020-09-25 06:44:07,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:07,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:44:07,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904059756] [2020-09-25 06:44:07,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:44:07,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:07,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:44:07,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:44:07,171 INFO L87 Difference]: Start difference. First operand 1751 states and 2244 transitions. Second operand 5 states.