/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=0.4 --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/Problem14_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:39:49,526 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:39:49,530 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:39:49,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:39:49,559 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:39:49,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:39:49,562 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:39:49,564 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:39:49,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:39:49,567 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:39:49,568 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:39:49,569 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:39:49,570 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:39:49,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:39:49,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:39:49,574 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:39:49,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:39:49,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:39:49,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:39:49,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:39:49,582 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:39:49,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:39:49,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:39:49,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:39:49,589 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:39:49,589 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:39:49,589 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:39:49,591 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:39:49,591 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:39:49,592 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:39:49,592 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:39:49,593 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:39:49,594 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:39:49,597 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:39:49,599 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:39:49,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:39:49,600 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:39:49,600 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:39:49,600 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:39:49,601 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:39:49,602 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:39:49,603 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 05:39:49,631 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:39:49,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:39:49,632 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:39:49,633 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:39:49,633 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:39:49,633 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:39:49,633 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:39:49,634 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:39:49,634 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:39:49,634 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:39:49,634 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:39:49,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:39:49,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:39:49,635 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:39:49,635 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:39:49,635 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:39:49,635 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:39:49,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:39:49,636 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:39:49,636 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:39:49,636 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:39:49,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:39:49,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:39:49,637 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:39:49,637 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:39:49,637 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:39:49,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:39:49,638 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:39:49,638 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:39:49,638 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 05:39:50,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:39:50,155 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:39:50,161 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:39:50,164 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:39:50,165 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:39:50,167 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label21.c [2020-09-25 05:39:50,264 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1513a7734/9b77d706d02741b9baaa2edc89a11143/FLAG7a24ae419 [2020-09-25 05:39:50,979 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:39:50,982 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label21.c [2020-09-25 05:39:51,003 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1513a7734/9b77d706d02741b9baaa2edc89a11143/FLAG7a24ae419 [2020-09-25 05:39:51,195 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1513a7734/9b77d706d02741b9baaa2edc89a11143 [2020-09-25 05:39:51,210 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:39:51,217 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:39:51,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:39:51,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:39:51,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:39:51,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:39:51" (1/1) ... [2020-09-25 05:39:51,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fbed158 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:51, skipping insertion in model container [2020-09-25 05:39:51,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:39:51" (1/1) ... [2020-09-25 05:39:51,241 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:39:51,316 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:39:51,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:39:51,847 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:39:52,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:39:52,115 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:39:52,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:52 WrapperNode [2020-09-25 05:39:52,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:39:52,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:39:52,124 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:39:52,124 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:39:52,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:52" (1/1) ... [2020-09-25 05:39:52,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:52" (1/1) ... [2020-09-25 05:39:52,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:52" (1/1) ... [2020-09-25 05:39:52,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:52" (1/1) ... [2020-09-25 05:39:52,237 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:52" (1/1) ... [2020-09-25 05:39:52,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:52" (1/1) ... [2020-09-25 05:39:52,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:52" (1/1) ... [2020-09-25 05:39:52,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:39:52,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:39:52,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:39:52,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:39:52,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:52" (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 05:39:52,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:39:52,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:39:52,396 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:39:52,396 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:39:52,396 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:39:52,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:39:52,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:39:52,399 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:39:52,399 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:39:52,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:39:52,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:39:54,511 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:39:54,512 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:39:54,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:39:54 BoogieIcfgContainer [2020-09-25 05:39:54,522 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:39:54,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:39:54,523 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:39:54,527 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:39:54,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:39:51" (1/3) ... [2020-09-25 05:39:54,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@339791f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:39:54, skipping insertion in model container [2020-09-25 05:39:54,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:52" (2/3) ... [2020-09-25 05:39:54,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@339791f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:39:54, skipping insertion in model container [2020-09-25 05:39:54,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:39:54" (3/3) ... [2020-09-25 05:39:54,532 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label21.c [2020-09-25 05:39:54,544 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:39:54,556 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:39:54,579 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:39:54,613 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:39:54,613 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:39:54,613 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:39:54,613 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:39:54,613 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:39:54,614 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:39:54,614 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:39:54,614 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:39:54,654 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 05:39:54,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 05:39:54,664 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:54,666 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] [2020-09-25 05:39:54,667 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:54,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:54,675 INFO L82 PathProgramCache]: Analyzing trace with hash -2130690894, now seen corresponding path program 1 times [2020-09-25 05:39:54,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:54,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433003380] [2020-09-25 05:39:54,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:54,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:55,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:55,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:55,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 05:39:55,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:39:55,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 688 [2020-09-25 05:39:55,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:55,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:55,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:39:55,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:39:55,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 05:39:55,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:39:55,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:55,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:55,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:55,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:55,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:55,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:55,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 05:39:55,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:55,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:55,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:55,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:55,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:39:55,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:55,770 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 05:39:55,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [433003380] [2020-09-25 05:39:55,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:39:55,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:39:55,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104291707] [2020-09-25 05:39:55,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:39:55,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:55,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:39:55,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:39:55,810 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 4 states. [2020-09-25 05:39:58,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:58,766 INFO L93 Difference]: Finished difference Result 1656 states and 2196 transitions. [2020-09-25 05:39:58,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:39:58,769 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-09-25 05:39:58,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:58,809 INFO L225 Difference]: With dead ends: 1656 [2020-09-25 05:39:58,809 INFO L226 Difference]: Without dead ends: 920 [2020-09-25 05:39:58,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:39:58,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2020-09-25 05:39:58,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 806. [2020-09-25 05:39:58,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-09-25 05:39:58,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 969 transitions. [2020-09-25 05:39:58,945 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 969 transitions. Word has length 53 [2020-09-25 05:39:58,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:58,946 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 969 transitions. [2020-09-25 05:39:58,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:39:58,946 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 969 transitions. [2020-09-25 05:39:58,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 05:39:58,960 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:58,961 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:58,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:39:58,961 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:58,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:58,965 INFO L82 PathProgramCache]: Analyzing trace with hash -2128467461, now seen corresponding path program 1 times [2020-09-25 05:39:58,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:58,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137789631] [2020-09-25 05:39:58,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:59,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:59,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:59,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:59,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:59,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:00,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:01,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:01,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 05:40:01,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:40:01,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2583 [2020-09-25 05:40:01,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:01,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:01,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:01,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-09-25 05:40:01,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 05:40:01,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:01,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:01,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:01,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:01,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:01,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:40:01,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:01,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:40:01,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:01,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:01,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:01,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:01,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:01,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:01,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:40:01,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:01,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:01,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:01,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 05:40:01,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:01,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 05:40:01,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:01,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:01,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:40:01,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:01,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 05:40:01,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:01,846 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:40:01,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137789631] [2020-09-25 05:40:01,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:01,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:40:01,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848499557] [2020-09-25 05:40:01,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:40:01,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:01,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:40:01,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:40:01,851 INFO L87 Difference]: Start difference. First operand 806 states and 969 transitions. Second operand 5 states. [2020-09-25 05:40:04,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:04,654 INFO L93 Difference]: Finished difference Result 2007 states and 2507 transitions. [2020-09-25 05:40:04,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:40:04,655 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-09-25 05:40:04,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:04,662 INFO L225 Difference]: With dead ends: 2007 [2020-09-25 05:40:04,663 INFO L226 Difference]: Without dead ends: 1021 [2020-09-25 05:40:04,667 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 [2020-09-25 05:40:04,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2020-09-25 05:40:04,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 993. [2020-09-25 05:40:04,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 993 states. [2020-09-25 05:40:04,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1165 transitions. [2020-09-25 05:40:04,722 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1165 transitions. Word has length 132 [2020-09-25 05:40:04,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:04,725 INFO L479 AbstractCegarLoop]: Abstraction has 993 states and 1165 transitions. [2020-09-25 05:40:04,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:40:04,725 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1165 transitions. [2020-09-25 05:40:04,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 05:40:04,736 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:04,736 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:04,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:40:04,737 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:04,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:04,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1607078394, now seen corresponding path program 1 times [2020-09-25 05:40:04,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:04,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424974251] [2020-09-25 05:40:04,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:04,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:04,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:04,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:05,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:05,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:05,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:06,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:08,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:08,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 05:40:08,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:40:08,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3254 [2020-09-25 05:40:08,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:08,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:08,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:08,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 05:40:08,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 05:40:08,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:08,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:08,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:08,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:08,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:08,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:40:08,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:08,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:40:08,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:08,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:08,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:08,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:08,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:08,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:08,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:40:08,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:08,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:08,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:08,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 05:40:08,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:08,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 05:40:08,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:08,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:08,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:40:08,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:08,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 05:40:08,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:08,303 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:40:08,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424974251] [2020-09-25 05:40:08,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:08,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:40:08,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990784759] [2020-09-25 05:40:08,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:40:08,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:08,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:40:08,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:40:08,306 INFO L87 Difference]: Start difference. First operand 993 states and 1165 transitions. Second operand 5 states. [2020-09-25 05:40:10,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:10,977 INFO L93 Difference]: Finished difference Result 2586 states and 3123 transitions. [2020-09-25 05:40:10,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:40:10,978 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-09-25 05:40:10,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:10,987 INFO L225 Difference]: With dead ends: 2586 [2020-09-25 05:40:10,987 INFO L226 Difference]: Without dead ends: 1608 [2020-09-25 05:40:10,991 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 [2020-09-25 05:40:10,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2020-09-25 05:40:11,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1388. [2020-09-25 05:40:11,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1388 states. [2020-09-25 05:40:11,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 1626 transitions. [2020-09-25 05:40:11,033 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 1626 transitions. Word has length 140 [2020-09-25 05:40:11,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:11,034 INFO L479 AbstractCegarLoop]: Abstraction has 1388 states and 1626 transitions. [2020-09-25 05:40:11,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:40:11,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 1626 transitions. [2020-09-25 05:40:11,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 05:40:11,036 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:11,037 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:11,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:40:11,037 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:11,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:11,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1257411310, now seen corresponding path program 1 times [2020-09-25 05:40:11,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:11,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251110328] [2020-09-25 05:40:11,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:11,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:11,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:11,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:11,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:12,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:12,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:14,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:14,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-25 05:40:14,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:40:14,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3749 [2020-09-25 05:40:14,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:14,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:14,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:14,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-09-25 05:40:14,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 05:40:14,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:14,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:14,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:14,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:14,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:14,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:40:14,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:14,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:40:14,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:14,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:14,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:14,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:14,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:14,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:14,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:40:14,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:14,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:15,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:15,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 05:40:15,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:15,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 05:40:15,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:15,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:15,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:40:15,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:15,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 05:40:15,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:15,053 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:40:15,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251110328] [2020-09-25 05:40:15,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:15,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:40:15,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040139735] [2020-09-25 05:40:15,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:40:15,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:15,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:40:15,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:40:15,062 INFO L87 Difference]: Start difference. First operand 1388 states and 1626 transitions. Second operand 5 states. [2020-09-25 05:40:17,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:17,671 INFO L93 Difference]: Finished difference Result 1800 states and 2219 transitions. [2020-09-25 05:40:17,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:40:17,672 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-09-25 05:40:17,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:17,684 INFO L225 Difference]: With dead ends: 1800 [2020-09-25 05:40:17,685 INFO L226 Difference]: Without dead ends: 1798 [2020-09-25 05:40:17,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:40:17,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1798 states. [2020-09-25 05:40:17,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1798 to 1770. [2020-09-25 05:40:17,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1770 states. [2020-09-25 05:40:17,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1770 states to 1770 states and 2184 transitions. [2020-09-25 05:40:17,751 INFO L78 Accepts]: Start accepts. Automaton has 1770 states and 2184 transitions. Word has length 149 [2020-09-25 05:40:17,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:17,752 INFO L479 AbstractCegarLoop]: Abstraction has 1770 states and 2184 transitions. [2020-09-25 05:40:17,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:40:17,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1770 states and 2184 transitions. [2020-09-25 05:40:17,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-25 05:40:17,755 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:17,756 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:17,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:40:17,756 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:17,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:17,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1135519942, now seen corresponding path program 1 times [2020-09-25 05:40:17,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:17,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435281749] [2020-09-25 05:40:17,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:17,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:17,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:17,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:18,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:19,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:20,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:21,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:21,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-09-25 05:40:21,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:40:21,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3641 [2020-09-25 05:40:21,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:21,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:21,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:21,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-09-25 05:40:21,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 05:40:21,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:21,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:21,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:21,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:21,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:21,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:40:21,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:21,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:40:21,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:21,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:21,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:21,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:21,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:21,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:40:21,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:40:21,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:21,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:21,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:21,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 05:40:21,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:21,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 05:40:21,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:21,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:21,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:40:21,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:21,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-09-25 05:40:21,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 05:40:21,763 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:40:21,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435281749] [2020-09-25 05:40:21,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:21,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:40:21,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770885846] [2020-09-25 05:40:21,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:40:21,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:21,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:40:21,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:40:21,768 INFO L87 Difference]: Start difference. First operand 1770 states and 2184 transitions. Second operand 5 states. [2020-09-25 05:40:24,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:24,973 INFO L93 Difference]: Finished difference Result 4458 states and 5643 transitions. [2020-09-25 05:40:24,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:40:24,977 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-09-25 05:40:24,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:24,995 INFO L225 Difference]: With dead ends: 4458 [2020-09-25 05:40:24,995 INFO L226 Difference]: Without dead ends: 2703 [2020-09-25 05:40:25,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:40:25,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2703 states. [2020-09-25 05:40:25,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2703 to 2154. [2020-09-25 05:40:25,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2154 states. [2020-09-25 05:40:25,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2154 states to 2154 states and 2707 transitions. [2020-09-25 05:40:25,074 INFO L78 Accepts]: Start accepts. Automaton has 2154 states and 2707 transitions. Word has length 155 [2020-09-25 05:40:25,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:25,075 INFO L479 AbstractCegarLoop]: Abstraction has 2154 states and 2707 transitions. [2020-09-25 05:40:25,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:40:25,075 INFO L276 IsEmpty]: Start isEmpty. Operand 2154 states and 2707 transitions. [2020-09-25 05:40:25,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 05:40:25,078 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:25,078 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:25,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:40:25,079 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:25,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:25,079 INFO L82 PathProgramCache]: Analyzing trace with hash -688471070, now seen corresponding path program 1 times [2020-09-25 05:40:25,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:25,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136789763] [2020-09-25 05:40:25,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:25,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:25,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:25,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:26,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:28,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:28,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 05:40:28,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:40:28,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2989 [2020-09-25 05:40:28,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:28,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:28,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:28,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 118 [2020-09-25 05:40:28,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 05:40:28,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:28,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:28,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:28,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:28,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:40:28,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:28,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:40:28,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:28,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:28,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:28,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:28,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:28,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:28,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:40:28,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:28,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:28,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:28,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-09-25 05:40:28,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:28,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 05:40:28,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:28,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:28,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:40:28,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:28,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 05:40:28,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:28,331 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:40:28,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136789763] [2020-09-25 05:40:28,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:28,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:40:28,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748048035] [2020-09-25 05:40:28,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:40:28,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:28,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:40:28,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:40:28,335 INFO L87 Difference]: Start difference. First operand 2154 states and 2707 transitions. Second operand 5 states. [2020-09-25 05:40:31,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:31,375 INFO L93 Difference]: Finished difference Result 5280 states and 6853 transitions. [2020-09-25 05:40:31,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:40:31,379 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-25 05:40:31,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:31,398 INFO L225 Difference]: With dead ends: 5280 [2020-09-25 05:40:31,399 INFO L226 Difference]: Without dead ends: 3141 [2020-09-25 05:40:31,406 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 [2020-09-25 05:40:31,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3141 states. [2020-09-25 05:40:31,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3141 to 2736. [2020-09-25 05:40:31,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2736 states. [2020-09-25 05:40:31,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2736 states to 2736 states and 3484 transitions. [2020-09-25 05:40:31,492 INFO L78 Accepts]: Start accepts. Automaton has 2736 states and 3484 transitions. Word has length 156 [2020-09-25 05:40:31,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:31,493 INFO L479 AbstractCegarLoop]: Abstraction has 2736 states and 3484 transitions. [2020-09-25 05:40:31,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:40:31,493 INFO L276 IsEmpty]: Start isEmpty. Operand 2736 states and 3484 transitions. [2020-09-25 05:40:31,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-09-25 05:40:31,504 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:31,507 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 05:40:31,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:40:31,507 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:31,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:31,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1597800751, now seen corresponding path program 1 times [2020-09-25 05:40:31,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:31,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492683203] [2020-09-25 05:40:31,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:31,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:31,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:31,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:31,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:34,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:35,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:36,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:36,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 350 [2020-09-25 05:40:36,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:40:36,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 05:40:36,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:36,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:36,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:36,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-09-25 05:40:36,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-09-25 05:40:36,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:36,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:36,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:36,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:36,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:36,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:40:36,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:36,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:40:36,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:36,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:36,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:36,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:36,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:36,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:36,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:40:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:36,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:36,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:36,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 05:40:36,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:36,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 05:40:36,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:36,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:36,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:40:36,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:36,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 05:40:36,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:40:36,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-25 05:40:36,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:36,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:37,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:37,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-25 05:40:37,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:37,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-09-25 05:40:37,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:37,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:37,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:37,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:40:37,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-09-25 05:40:37,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:37,436 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 163 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:40:37,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492683203] [2020-09-25 05:40:37,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:37,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:40:37,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549906701] [2020-09-25 05:40:37,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:40:37,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:37,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:40:37,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:40:37,438 INFO L87 Difference]: Start difference. First operand 2736 states and 3484 transitions. Second operand 7 states.