/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/Problem10_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:47:17,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:47:17,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:47:17,242 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:47:17,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:47:17,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:47:17,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:47:17,247 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:47:17,248 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:47:17,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:47:17,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:47:17,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:47:17,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:47:17,254 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:47:17,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:47:17,256 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:47:17,257 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:47:17,258 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:47:17,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:47:17,262 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:47:17,264 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:47:17,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:47:17,267 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:47:17,268 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:47:17,271 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:47:17,271 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:47:17,271 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:47:17,272 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:47:17,273 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:47:17,274 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:47:17,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:47:17,275 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:47:17,276 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:47:17,277 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:47:17,278 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:47:17,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:47:17,279 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:47:17,279 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:47:17,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:47:17,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:47:17,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:47:17,283 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 06:47:17,339 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:47:17,340 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:47:17,341 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:47:17,341 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:47:17,341 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:47:17,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:47:17,342 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:47:17,342 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:47:17,343 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:47:17,343 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:47:17,343 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:47:17,343 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:47:17,343 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:47:17,345 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:47:17,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:47:17,345 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:47:17,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:47:17,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:47:17,346 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:47:17,346 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:47:17,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:47:17,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:47:17,347 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:47:17,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:47:17,347 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:47:17,348 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:47:17,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:47:17,348 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:47:17,348 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:47:17,348 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 06:47:17,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:47:17,850 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:47:17,855 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:47:17,857 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:47:17,858 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:47:17,859 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label21.c [2020-09-25 06:47:17,952 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/748eefc49/9cd05f65b54346bf8c1e50cda9ac2aad/FLAG986233f93 [2020-09-25 06:47:18,630 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:47:18,631 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label21.c [2020-09-25 06:47:18,655 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/748eefc49/9cd05f65b54346bf8c1e50cda9ac2aad/FLAG986233f93 [2020-09-25 06:47:18,874 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/748eefc49/9cd05f65b54346bf8c1e50cda9ac2aad [2020-09-25 06:47:18,890 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:47:18,897 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:47:18,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:47:18,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:47:18,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:47:18,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:47:18" (1/1) ... [2020-09-25 06:47:18,910 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@441bb81b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:18, skipping insertion in model container [2020-09-25 06:47:18,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:47:18" (1/1) ... [2020-09-25 06:47:18,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:47:18,996 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:47:19,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:47:19,587 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:47:19,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:47:19,715 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:47:19,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:19 WrapperNode [2020-09-25 06:47:19,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:47:19,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:47:19,718 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:47:19,718 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:47:19,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:19" (1/1) ... [2020-09-25 06:47:19,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:19" (1/1) ... [2020-09-25 06:47:19,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:19" (1/1) ... [2020-09-25 06:47:19,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:19" (1/1) ... [2020-09-25 06:47:19,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:19" (1/1) ... [2020-09-25 06:47:19,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:19" (1/1) ... [2020-09-25 06:47:19,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:19" (1/1) ... [2020-09-25 06:47:19,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:47:19,839 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:47:19,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:47:19,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:47:19,840 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:19" (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 06:47:19,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:47:19,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:47:19,948 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:47:19,948 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:47:19,948 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:47:19,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:47:19,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:47:19,949 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:47:19,949 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:47:19,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:47:19,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:47:21,447 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:47:21,448 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:47:21,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:47:21 BoogieIcfgContainer [2020-09-25 06:47:21,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:47:21,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:47:21,459 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:47:21,463 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:47:21,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:47:18" (1/3) ... [2020-09-25 06:47:21,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d31dd93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:47:21, skipping insertion in model container [2020-09-25 06:47:21,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:19" (2/3) ... [2020-09-25 06:47:21,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d31dd93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:47:21, skipping insertion in model container [2020-09-25 06:47:21,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:47:21" (3/3) ... [2020-09-25 06:47:21,468 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label21.c [2020-09-25 06:47:21,484 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:47:21,498 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:47:21,522 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:47:21,560 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:47:21,561 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:47:21,561 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:47:21,561 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:47:21,561 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:47:21,561 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:47:21,561 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:47:21,562 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:47:21,594 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 06:47:21,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 06:47:21,604 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:21,605 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] [2020-09-25 06:47:21,606 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:21,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:21,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1065442889, now seen corresponding path program 1 times [2020-09-25 06:47:21,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:21,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79390460] [2020-09-25 06:47:21,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:21,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:21,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:21,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:22,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:22,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 06:47:22,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:47:22,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 900 [2020-09-25 06:47:22,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:22,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:22,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:47:22,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:47:22,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 06:47:22,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:47:22,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:22,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:22,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:22,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:22,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:22,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 06:47:22,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:22,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:22,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:22,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:22,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:47:22,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:22,959 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 06:47:22,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79390460] [2020-09-25 06:47:22,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:47:22,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:47:22,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99699517] [2020-09-25 06:47:22,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:47:22,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:22,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:47:22,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:47:22,995 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 06:47:25,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:25,218 INFO L93 Difference]: Finished difference Result 1160 states and 1585 transitions. [2020-09-25 06:47:25,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:47:25,220 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-09-25 06:47:25,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:25,244 INFO L225 Difference]: With dead ends: 1160 [2020-09-25 06:47:25,244 INFO L226 Difference]: Without dead ends: 631 [2020-09-25 06:47:25,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:47:25,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-09-25 06:47:25,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 576. [2020-09-25 06:47:25,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-25 06:47:25,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-25 06:47:25,353 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 46 [2020-09-25 06:47:25,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:25,354 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-25 06:47:25,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:47:25,355 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-25 06:47:25,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 06:47:25,362 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:25,363 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:47:25,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:47:25,364 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:25,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:25,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1435399792, now seen corresponding path program 1 times [2020-09-25 06:47:25,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:25,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934637355] [2020-09-25 06:47:25,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:25,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:25,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:25,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:26,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:28,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:28,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:29,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:29,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:29,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:30,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:30,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 06:47:30,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 06:47:30,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 06:47:30,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:30,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:30,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:47:30,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:47:30,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 06:47:30,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 06:47:30,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:30,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:30,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:30,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:30,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:30,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:30,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 06:47:30,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:30,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:30,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:30,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:30,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:47:30,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:30,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:30,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:30,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:30,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:30,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 06:47:30,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:30,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-25 06:47:30,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:30,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:30,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:30,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:30,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 06:47:30,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:30,875 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:47:30,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934637355] [2020-09-25 06:47:30,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:47:30,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:47:30,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497215946] [2020-09-25 06:47:30,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:47:30,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:30,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:47:30,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:47:30,881 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 7 states. [2020-09-25 06:47:32,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:32,945 INFO L93 Difference]: Finished difference Result 1330 states and 1655 transitions. [2020-09-25 06:47:32,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 06:47:32,945 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 129 [2020-09-25 06:47:32,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:32,950 INFO L225 Difference]: With dead ends: 1330 [2020-09-25 06:47:32,951 INFO L226 Difference]: Without dead ends: 769 [2020-09-25 06:47:32,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:47:32,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2020-09-25 06:47:32,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 731. [2020-09-25 06:47:32,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2020-09-25 06:47:32,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 902 transitions. [2020-09-25 06:47:32,993 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 902 transitions. Word has length 129 [2020-09-25 06:47:32,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:32,994 INFO L479 AbstractCegarLoop]: Abstraction has 731 states and 902 transitions. [2020-09-25 06:47:32,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:47:32,994 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 902 transitions. [2020-09-25 06:47:33,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 06:47:33,000 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:33,000 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:47:33,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:47:33,001 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:33,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:33,001 INFO L82 PathProgramCache]: Analyzing trace with hash 677426997, now seen corresponding path program 1 times [2020-09-25 06:47:33,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:33,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403000073] [2020-09-25 06:47:33,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:33,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:33,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:33,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:33,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:33,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:34,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:34,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:34,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:35,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:35,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 06:47:35,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:47:35,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1973 [2020-09-25 06:47:35,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:35,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:35,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:47:35,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 06:47:35,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 06:47:35,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:47:35,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:35,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:35,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:35,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:35,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:35,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:35,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:47:35,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:35,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:35,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:35,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:35,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:47:35,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:35,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:35,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:35,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:35,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 06:47:35,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:35,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-25 06:47:35,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:35,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:35,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:35,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:35,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 06:47:35,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:35,362 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:47:35,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403000073] [2020-09-25 06:47:35,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:47:35,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:47:35,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722193217] [2020-09-25 06:47:35,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:47:35,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:35,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:47:35,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:47:35,365 INFO L87 Difference]: Start difference. First operand 731 states and 902 transitions. Second operand 7 states. [2020-09-25 06:47:37,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:37,563 INFO L93 Difference]: Finished difference Result 1822 states and 2354 transitions. [2020-09-25 06:47:37,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:47:37,564 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 129 [2020-09-25 06:47:37,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:37,571 INFO L225 Difference]: With dead ends: 1822 [2020-09-25 06:47:37,571 INFO L226 Difference]: Without dead ends: 1106 [2020-09-25 06:47:37,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:47:37,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2020-09-25 06:47:37,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 1050. [2020-09-25 06:47:37,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1050 states. [2020-09-25 06:47:37,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1255 transitions. [2020-09-25 06:47:37,631 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1255 transitions. Word has length 129 [2020-09-25 06:47:37,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:37,632 INFO L479 AbstractCegarLoop]: Abstraction has 1050 states and 1255 transitions. [2020-09-25 06:47:37,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:47:37,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1255 transitions. [2020-09-25 06:47:37,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 06:47:37,636 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:37,637 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:47:37,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:47:37,637 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:37,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:37,638 INFO L82 PathProgramCache]: Analyzing trace with hash 2104953989, now seen corresponding path program 1 times [2020-09-25 06:47:37,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:37,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143475181] [2020-09-25 06:47:37,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:37,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:37,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:37,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:38,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:38,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:39,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:39,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:40,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:42,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:42,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 06:47:42,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:47:42,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4759 [2020-09-25 06:47:42,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:42,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:42,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:47:42,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 06:47:42,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:47:42,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:42,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:42,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:42,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:42,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:42,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:42,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:42,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:47:42,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:42,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:42,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:42,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:42,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:42,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:42,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:42,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:42,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:42,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:42,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:47:42,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:42,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-25 06:47:42,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:42,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:42,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:47:42,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:42,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 06:47:42,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:47:42,764 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:47:42,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143475181] [2020-09-25 06:47:42,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:47:42,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 06:47:42,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416003570] [2020-09-25 06:47:42,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:47:42,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:42,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:47:42,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:47:42,770 INFO L87 Difference]: Start difference. First operand 1050 states and 1255 transitions. Second operand 6 states. [2020-09-25 06:47:45,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:45,645 INFO L93 Difference]: Finished difference Result 2940 states and 3718 transitions. [2020-09-25 06:47:45,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:47:45,648 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2020-09-25 06:47:45,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:45,662 INFO L225 Difference]: With dead ends: 2940 [2020-09-25 06:47:45,662 INFO L226 Difference]: Without dead ends: 2055 [2020-09-25 06:47:45,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:47:45,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2055 states. [2020-09-25 06:47:45,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2055 to 1692. [2020-09-25 06:47:45,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1692 states. [2020-09-25 06:47:45,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1692 states to 1692 states and 2144 transitions. [2020-09-25 06:47:45,722 INFO L78 Accepts]: Start accepts. Automaton has 1692 states and 2144 transitions. Word has length 135 [2020-09-25 06:47:45,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:45,723 INFO L479 AbstractCegarLoop]: Abstraction has 1692 states and 2144 transitions. [2020-09-25 06:47:45,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:47:45,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1692 states and 2144 transitions. [2020-09-25 06:47:45,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 06:47:45,726 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:45,726 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:47:45,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:47:45,727 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:45,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:45,727 INFO L82 PathProgramCache]: Analyzing trace with hash 124765503, now seen corresponding path program 1 times [2020-09-25 06:47:45,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:45,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466973999] [2020-09-25 06:47:45,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:45,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:45,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:46,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:46,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:46,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:47,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:47,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-25 06:47:47,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:47:47,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1486 [2020-09-25 06:47:47,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:47,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:47,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:47:47,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 06:47:47,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 06:47:47,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:47,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:47,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:47,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:47,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:47,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:47,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:47,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 06:47:47,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:47,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:47,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:47,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:47,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:47:47,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:47:47,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:47,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:47,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:47,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:47,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 06:47:47,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:47,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-09-25 06:47:47,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:47,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:47,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:47,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:47,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 06:47:47,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:47:47,811 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:47:47,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466973999] [2020-09-25 06:47:47,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:47:47,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:47:47,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622172324] [2020-09-25 06:47:47,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:47:47,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:47,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:47:47,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:47:47,814 INFO L87 Difference]: Start difference. First operand 1692 states and 2144 transitions. Second operand 7 states. [2020-09-25 06:47:50,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:50,227 INFO L93 Difference]: Finished difference Result 4515 states and 6995 transitions. [2020-09-25 06:47:50,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:47:50,232 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 151 [2020-09-25 06:47:50,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:50,262 INFO L225 Difference]: With dead ends: 4515 [2020-09-25 06:47:50,262 INFO L226 Difference]: Without dead ends: 2988 [2020-09-25 06:47:50,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:47:50,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2988 states. [2020-09-25 06:47:50,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2988 to 2646. [2020-09-25 06:47:50,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2646 states. [2020-09-25 06:47:50,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2646 states to 2646 states and 3483 transitions. [2020-09-25 06:47:50,395 INFO L78 Accepts]: Start accepts. Automaton has 2646 states and 3483 transitions. Word has length 151 [2020-09-25 06:47:50,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:50,396 INFO L479 AbstractCegarLoop]: Abstraction has 2646 states and 3483 transitions. [2020-09-25 06:47:50,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:47:50,396 INFO L276 IsEmpty]: Start isEmpty. Operand 2646 states and 3483 transitions. [2020-09-25 06:47:50,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-09-25 06:47:50,401 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:50,401 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:47:50,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:47:50,401 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:50,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:50,402 INFO L82 PathProgramCache]: Analyzing trace with hash 841465058, now seen corresponding path program 1 times [2020-09-25 06:47:50,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:50,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565474107] [2020-09-25 06:47:50,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:50,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:50,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:50,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:50,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:50,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:53,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:53,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:53,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:53,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:53,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:55,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:55,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-09-25 06:47:55,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 06:47:55,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:47:55,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:55,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:55,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:47:55,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 06:47:55,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 06:47:55,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:55,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:55,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:55,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:55,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:55,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:55,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:47:55,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:55,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:55,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:55,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:55,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:55,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:55,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:55,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:55,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:55,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:55,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:47:55,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:55,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-25 06:47:55,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:55,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:55,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:55,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:55,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 06:47:55,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:55,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 06:47:55,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:55,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:56,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:56,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 06:47:56,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:56,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-09-25 06:47:56,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:56,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:56,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:56,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:56,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 06:47:56,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:56,254 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:47:56,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565474107] [2020-09-25 06:47:56,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:47:56,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 06:47:56,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768609834] [2020-09-25 06:47:56,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:47:56,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:56,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:47:56,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:47:56,260 INFO L87 Difference]: Start difference. First operand 2646 states and 3483 transitions. Second operand 9 states. [2020-09-25 06:48:00,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:00,801 INFO L93 Difference]: Finished difference Result 5810 states and 7655 transitions. [2020-09-25 06:48:00,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 06:48:00,803 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 218 [2020-09-25 06:48:00,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:00,818 INFO L225 Difference]: With dead ends: 5810 [2020-09-25 06:48:00,819 INFO L226 Difference]: Without dead ends: 3329 [2020-09-25 06:48:00,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-09-25 06:48:00,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3329 states. [2020-09-25 06:48:00,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3329 to 2808. [2020-09-25 06:48:00,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2808 states. [2020-09-25 06:48:00,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2808 states to 2808 states and 3683 transitions. [2020-09-25 06:48:00,907 INFO L78 Accepts]: Start accepts. Automaton has 2808 states and 3683 transitions. Word has length 218 [2020-09-25 06:48:00,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:00,908 INFO L479 AbstractCegarLoop]: Abstraction has 2808 states and 3683 transitions. [2020-09-25 06:48:00,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:48:00,908 INFO L276 IsEmpty]: Start isEmpty. Operand 2808 states and 3683 transitions. [2020-09-25 06:48:00,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-09-25 06:48:00,914 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:00,914 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:48:00,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:48:00,915 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:00,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:00,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1550966703, now seen corresponding path program 1 times [2020-09-25 06:48:00,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:00,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748711856] [2020-09-25 06:48:00,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:00,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:01,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:01,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:01,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:01,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:01,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:01,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:04,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:05,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:05,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-09-25 06:48:05,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:48:05,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 06:48:05,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:05,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:05,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:05,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 06:48:05,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 06:48:05,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:06,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:48:06,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:06,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:06,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:06,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:48:06,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:06,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:48:06,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:06,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:06,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:48:06,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:06,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:48:06,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:48:06,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:48:06,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:06,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:06,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:06,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:48:06,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:06,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 06:48:06,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:06,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:06,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:48:06,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:48:06,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 06:48:06,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:06,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 06:48:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:06,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:06,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:48:06,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 06:48:06,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:48:06,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-25 06:48:06,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:48:06,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:48:06,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:48:06,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:48:06,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 06:48:06,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:48:06,509 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:48:06,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748711856] [2020-09-25 06:48:06,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:48:06,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:48:06,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478737773] [2020-09-25 06:48:06,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:48:06,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:48:06,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:48:06,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:48:06,514 INFO L87 Difference]: Start difference. First operand 2808 states and 3683 transitions. Second operand 7 states.