/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/Problem11_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:39:40,820 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:39:40,823 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:39:40,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:39:40,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:39:40,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:39:40,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:39:40,854 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:39:40,856 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:39:40,857 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:39:40,858 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:39:40,859 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:39:40,860 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:39:40,861 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:39:40,862 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:39:40,863 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:39:40,864 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:39:40,865 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:39:40,866 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:39:40,868 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:39:40,870 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:39:40,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:39:40,872 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:39:40,873 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:39:40,875 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:39:40,876 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:39:40,876 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:39:40,877 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:39:40,877 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:39:40,878 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:39:40,879 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:39:40,879 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:39:40,880 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:39:40,881 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:39:40,882 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:39:40,882 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:39:40,883 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:39:40,884 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:39:40,884 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:39:40,885 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:39:40,886 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:39:40,887 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 05:39:40,913 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:39:40,913 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:39:40,914 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:39:40,915 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:39:40,915 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:39:40,915 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:39:40,915 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:39:40,915 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:39:40,916 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:39:40,916 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:39:40,916 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:39:40,916 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:39:40,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:39:40,917 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:39:40,917 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:39:40,917 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:39:40,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:39:40,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:39:40,918 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:39:40,918 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:39:40,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:39:40,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:39:40,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:39:40,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:39:40,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:39:40,919 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:39:40,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:39:40,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:39:40,920 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:39:40,920 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 05:39:41,371 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:39:41,390 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:39:41,395 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:39:41,396 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:39:41,397 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:39:41,398 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label18.c [2020-09-25 05:39:41,481 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca2a84b64/458cee25174041c79a2275ad245921d0/FLAG845a3bb2c [2020-09-25 05:39:42,139 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:39:42,140 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label18.c [2020-09-25 05:39:42,178 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca2a84b64/458cee25174041c79a2275ad245921d0/FLAG845a3bb2c [2020-09-25 05:39:42,349 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca2a84b64/458cee25174041c79a2275ad245921d0 [2020-09-25 05:39:42,363 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:39:42,370 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:39:42,371 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:39:42,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:39:42,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:39:42,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:39:42" (1/1) ... [2020-09-25 05:39:42,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1987833a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:42, skipping insertion in model container [2020-09-25 05:39:42,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:39:42" (1/1) ... [2020-09-25 05:39:42,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:39:42,480 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:39:43,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:39:43,332 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:39:43,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:39:43,717 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:39:43,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:43 WrapperNode [2020-09-25 05:39:43,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:39:43,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:39:43,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:39:43,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:39:43,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:43" (1/1) ... [2020-09-25 05:39:43,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:43" (1/1) ... [2020-09-25 05:39:43,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:43" (1/1) ... [2020-09-25 05:39:43,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:43" (1/1) ... [2020-09-25 05:39:43,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:43" (1/1) ... [2020-09-25 05:39:43,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:43" (1/1) ... [2020-09-25 05:39:43,900 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:43" (1/1) ... [2020-09-25 05:39:43,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:39:43,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:39:43,918 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:39:43,918 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:39:43,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:43" (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 05:39:44,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:39:44,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:39:44,018 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:39:44,018 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:39:44,018 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:39:44,018 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:39:44,018 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:39:44,023 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:39:44,024 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:39:44,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:39:44,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:39:46,455 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:39:46,456 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:39:46,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:39:46 BoogieIcfgContainer [2020-09-25 05:39:46,468 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:39:46,470 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:39:46,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:39:46,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:39:46,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:39:42" (1/3) ... [2020-09-25 05:39:46,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12894f0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:39:46, skipping insertion in model container [2020-09-25 05:39:46,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:43" (2/3) ... [2020-09-25 05:39:46,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12894f0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:39:46, skipping insertion in model container [2020-09-25 05:39:46,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:39:46" (3/3) ... [2020-09-25 05:39:46,480 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label18.c [2020-09-25 05:39:46,494 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:39:46,507 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:39:46,530 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:39:46,567 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:39:46,567 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:39:46,567 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:39:46,567 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:39:46,567 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:39:46,568 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:39:46,568 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:39:46,568 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:39:46,607 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states. [2020-09-25 05:39:46,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 05:39:46,620 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:46,621 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:39:46,622 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:46,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:46,631 INFO L82 PathProgramCache]: Analyzing trace with hash -123889732, now seen corresponding path program 1 times [2020-09-25 05:39:46,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:46,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910420703] [2020-09-25 05:39:46,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:46,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:46,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:47,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:47,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:48,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:48,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 05:39:48,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:39:48,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1354 [2020-09-25 05:39:48,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:48,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:48,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:39:48,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:39:48,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 05:39:48,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:39:48,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:48,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:48,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:48,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 05:39:48,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:48,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 05:39:48,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:48,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:48,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:48,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:48,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:39:48,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:48,441 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 05:39:48,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910420703] [2020-09-25 05:39:48,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:39:48,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:39:48,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502734379] [2020-09-25 05:39:48,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:39:48,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:48,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:39:48,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:39:48,477 INFO L87 Difference]: Start difference. First operand 813 states. Second operand 4 states. [2020-09-25 05:39:52,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:52,481 INFO L93 Difference]: Finished difference Result 1921 states and 2518 transitions. [2020-09-25 05:39:52,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:39:52,483 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-09-25 05:39:52,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:52,512 INFO L225 Difference]: With dead ends: 1921 [2020-09-25 05:39:52,512 INFO L226 Difference]: Without dead ends: 1036 [2020-09-25 05:39:52,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:39:52,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2020-09-25 05:39:52,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 978. [2020-09-25 05:39:52,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 978 states. [2020-09-25 05:39:52,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1165 transitions. [2020-09-25 05:39:52,648 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1165 transitions. Word has length 55 [2020-09-25 05:39:52,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:52,649 INFO L479 AbstractCegarLoop]: Abstraction has 978 states and 1165 transitions. [2020-09-25 05:39:52,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:39:52,649 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1165 transitions. [2020-09-25 05:39:52,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 05:39:52,657 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:52,658 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] [2020-09-25 05:39:52,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:39:52,659 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:52,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:52,659 INFO L82 PathProgramCache]: Analyzing trace with hash 497365935, now seen corresponding path program 1 times [2020-09-25 05:39:52,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:52,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041568640] [2020-09-25 05:39:52,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:52,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:52,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:52,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:54,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:56,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:56,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:56,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:57,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:57,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 05:39:57,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:39:57,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 05:39:57,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:57,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:57,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:57,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-09-25 05:39:57,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 05:39:57,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:57,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:57,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:57,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:57,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:57,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 05:39:57,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:57,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:39:57,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:57,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:57,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:57,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:57,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:57,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:39:57,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 05:39:57,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:57,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:58,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:58,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 05:39:58,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:58,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 05:39:58,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:58,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:58,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:58,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:58,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 05:39:58,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:58,181 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 05:39:58,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041568640] [2020-09-25 05:39:58,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:58,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:39:58,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855748559] [2020-09-25 05:39:58,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:39:58,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:58,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:39:58,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:39:58,187 INFO L87 Difference]: Start difference. First operand 978 states and 1165 transitions. Second operand 5 states. [2020-09-25 05:40:01,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:01,621 INFO L93 Difference]: Finished difference Result 2001 states and 2457 transitions. [2020-09-25 05:40:01,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:40:01,622 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-09-25 05:40:01,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:01,631 INFO L225 Difference]: With dead ends: 2001 [2020-09-25 05:40:01,631 INFO L226 Difference]: Without dead ends: 1267 [2020-09-25 05:40:01,635 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 05:40:01,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2020-09-25 05:40:01,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1224. [2020-09-25 05:40:01,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1224 states. [2020-09-25 05:40:01,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 1517 transitions. [2020-09-25 05:40:01,677 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 1517 transitions. Word has length 137 [2020-09-25 05:40:01,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:01,678 INFO L479 AbstractCegarLoop]: Abstraction has 1224 states and 1517 transitions. [2020-09-25 05:40:01,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:40:01,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 1517 transitions. [2020-09-25 05:40:01,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 05:40:01,683 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:01,683 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] [2020-09-25 05:40:01,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:40:01,684 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:01,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:01,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1536608329, now seen corresponding path program 1 times [2020-09-25 05:40:01,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:01,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143700973] [2020-09-25 05:40:01,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:01,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:01,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:01,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:02,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:02,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:03,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:03,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:06,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:06,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:06,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 05:40:06,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:40:06,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 05:40:06,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:06,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:06,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:06,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-09-25 05:40:06,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 05:40:06,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:06,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:06,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:06,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:06,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:06,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 05:40:06,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:06,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:40:06,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:06,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:06,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:06,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:06,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:06,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:06,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 05:40:06,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:06,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:07,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:07,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 05:40:07,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:07,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 05:40:07,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:07,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:07,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:40:07,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:07,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 05:40:07,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:07,098 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 05:40:07,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143700973] [2020-09-25 05:40:07,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:07,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:40:07,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866115098] [2020-09-25 05:40:07,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:40:07,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:07,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:40:07,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:40:07,102 INFO L87 Difference]: Start difference. First operand 1224 states and 1517 transitions. Second operand 5 states. [2020-09-25 05:40:10,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:10,794 INFO L93 Difference]: Finished difference Result 3058 states and 3952 transitions. [2020-09-25 05:40:10,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:40:10,795 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-09-25 05:40:10,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:10,810 INFO L225 Difference]: With dead ends: 3058 [2020-09-25 05:40:10,810 INFO L226 Difference]: Without dead ends: 1851 [2020-09-25 05:40:10,815 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 05:40:10,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1851 states. [2020-09-25 05:40:10,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1851 to 1829. [2020-09-25 05:40:10,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1829 states. [2020-09-25 05:40:10,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2302 transitions. [2020-09-25 05:40:10,890 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2302 transitions. Word has length 139 [2020-09-25 05:40:10,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:10,892 INFO L479 AbstractCegarLoop]: Abstraction has 1829 states and 2302 transitions. [2020-09-25 05:40:10,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:40:10,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2302 transitions. [2020-09-25 05:40:10,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 05:40:10,898 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:10,898 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:40:10,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:40:10,898 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:10,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:10,899 INFO L82 PathProgramCache]: Analyzing trace with hash -578651405, now seen corresponding path program 1 times [2020-09-25 05:40:10,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:10,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831586492] [2020-09-25 05:40:10,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:10,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:11,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:11,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:11,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:12,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:13,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:13,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 05:40:13,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:40:13,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2919 [2020-09-25 05:40:13,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:13,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:13,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:13,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-09-25 05:40:13,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 05:40:13,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:13,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:13,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:13,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:13,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 05:40:13,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:13,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:40:13,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:13,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:13,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:13,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:13,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:13,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:13,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 05:40:14,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:14,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:14,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:14,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-25 05:40:14,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:14,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 05:40:14,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:14,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:14,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:40:14,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:14,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 05:40:14,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:40:14,232 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 05:40:14,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831586492] [2020-09-25 05:40:14,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:14,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:40:14,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234499427] [2020-09-25 05:40:14,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:40:14,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:14,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:40:14,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:40:14,238 INFO L87 Difference]: Start difference. First operand 1829 states and 2302 transitions. Second operand 5 states. [2020-09-25 05:40:18,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:18,066 INFO L93 Difference]: Finished difference Result 4854 states and 6341 transitions. [2020-09-25 05:40:18,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:40:18,067 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-09-25 05:40:18,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:18,086 INFO L225 Difference]: With dead ends: 4854 [2020-09-25 05:40:18,086 INFO L226 Difference]: Without dead ends: 3042 [2020-09-25 05:40:18,095 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 05:40:18,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3042 states. [2020-09-25 05:40:18,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3042 to 3008. [2020-09-25 05:40:18,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3008 states. [2020-09-25 05:40:18,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 3794 transitions. [2020-09-25 05:40:18,255 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 3794 transitions. Word has length 166 [2020-09-25 05:40:18,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:18,256 INFO L479 AbstractCegarLoop]: Abstraction has 3008 states and 3794 transitions. [2020-09-25 05:40:18,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:40:18,257 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 3794 transitions. [2020-09-25 05:40:18,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-09-25 05:40:18,267 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:18,268 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:18,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:40:18,268 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:18,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:18,269 INFO L82 PathProgramCache]: Analyzing trace with hash 865020019, now seen corresponding path program 1 times [2020-09-25 05:40:18,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:18,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414550940] [2020-09-25 05:40:18,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:18,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:18,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:18,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:18,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:19,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:21,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:21,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:23,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:23,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-09-25 05:40:23,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:40:23,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-09-25 05:40:23,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:23,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:23,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:23,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-09-25 05:40:23,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 05:40:23,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:23,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:23,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:23,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:23,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:23,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 05:40:23,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:23,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:40:23,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:23,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:23,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:23,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:23,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:23,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 05:40:23,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 05:40:23,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:23,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:23,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:23,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 05:40:23,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:23,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-25 05:40:23,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:23,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:23,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:40:23,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:23,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 05:40:23,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:23,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-09-25 05:40:23,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:23,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:23,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:23,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 05:40:23,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:23,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-09-25 05:40:23,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:23,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:23,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:23,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:40:23,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 05:40:23,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:24,135 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:40:24,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414550940] [2020-09-25 05:40:24,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:24,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:40:24,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960076670] [2020-09-25 05:40:24,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:40:24,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:24,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:40:24,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:40:24,138 INFO L87 Difference]: Start difference. First operand 3008 states and 3794 transitions. Second operand 7 states. [2020-09-25 05:40:29,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:29,467 INFO L93 Difference]: Finished difference Result 6737 states and 9433 transitions. [2020-09-25 05:40:29,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:40:29,468 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 231 [2020-09-25 05:40:29,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:29,505 INFO L225 Difference]: With dead ends: 6737 [2020-09-25 05:40:29,505 INFO L226 Difference]: Without dead ends: 4566 [2020-09-25 05:40:29,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:40:29,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4566 states. [2020-09-25 05:40:29,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4566 to 4315. [2020-09-25 05:40:29,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4315 states. [2020-09-25 05:40:29,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4315 states to 4315 states and 5501 transitions. [2020-09-25 05:40:29,697 INFO L78 Accepts]: Start accepts. Automaton has 4315 states and 5501 transitions. Word has length 231 [2020-09-25 05:40:29,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:29,698 INFO L479 AbstractCegarLoop]: Abstraction has 4315 states and 5501 transitions. [2020-09-25 05:40:29,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:40:29,698 INFO L276 IsEmpty]: Start isEmpty. Operand 4315 states and 5501 transitions. [2020-09-25 05:40:29,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-09-25 05:40:29,706 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:29,706 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:29,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:40:29,707 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:29,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:29,707 INFO L82 PathProgramCache]: Analyzing trace with hash 86533005, now seen corresponding path program 1 times [2020-09-25 05:40:29,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:29,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119733638] [2020-09-25 05:40:29,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:29,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:29,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:29,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:30,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:30,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:30,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:30,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:31,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking...