/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:42:48,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:42:48,193 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:42:48,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:42:48,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:42:48,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:42:48,223 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:42:48,225 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:42:48,227 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:42:48,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:42:48,229 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:42:48,231 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:42:48,231 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:42:48,232 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:42:48,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:42:48,237 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:42:48,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:42:48,242 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:42:48,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:42:48,247 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:42:48,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:42:48,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:42:48,258 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:42:48,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:42:48,267 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:42:48,267 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:42:48,267 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:42:48,268 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:42:48,270 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:42:48,272 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:42:48,272 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:42:48,273 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:42:48,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:42:48,277 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:42:48,279 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:42:48,279 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:42:48,280 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:42:48,280 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:42:48,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:42:48,282 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:42:48,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:42:48,284 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 06:42:48,343 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:42:48,346 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:42:48,347 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:42:48,348 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:42:48,348 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:42:48,348 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:42:48,348 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:42:48,349 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:42:48,349 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:42:48,350 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:42:48,350 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:42:48,350 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:42:48,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:42:48,350 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:42:48,351 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:42:48,351 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:42:48,351 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:42:48,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:42:48,351 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:42:48,352 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:42:48,352 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:42:48,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:42:48,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:42:48,352 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:42:48,354 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:42:48,354 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:42:48,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:42:48,354 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:42:48,355 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:42:48,355 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 06:42:48,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:42:48,891 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:42:48,895 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:42:48,897 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:42:48,897 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:42:48,899 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label42.c [2020-09-25 06:42:48,982 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f5da9fd89/126345ab567a4953a1206f2e135f9a1c/FLAGc4f60e415 [2020-09-25 06:42:49,672 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:42:49,676 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label42.c [2020-09-25 06:42:49,691 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f5da9fd89/126345ab567a4953a1206f2e135f9a1c/FLAGc4f60e415 [2020-09-25 06:42:49,897 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f5da9fd89/126345ab567a4953a1206f2e135f9a1c [2020-09-25 06:42:49,915 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:42:49,922 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:42:49,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:42:49,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:42:49,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:42:49,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:42:49" (1/1) ... [2020-09-25 06:42:49,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d876c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:49, skipping insertion in model container [2020-09-25 06:42:49,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:42:49" (1/1) ... [2020-09-25 06:42:49,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:42:50,016 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:42:50,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:42:50,505 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:42:50,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:42:50,785 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:42:50,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:50 WrapperNode [2020-09-25 06:42:50,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:42:50,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:42:50,787 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:42:50,788 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:42:50,807 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:50" (1/1) ... [2020-09-25 06:42:50,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:50" (1/1) ... [2020-09-25 06:42:50,828 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:50" (1/1) ... [2020-09-25 06:42:50,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:50" (1/1) ... [2020-09-25 06:42:50,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:50" (1/1) ... [2020-09-25 06:42:50,898 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:50" (1/1) ... [2020-09-25 06:42:50,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:50" (1/1) ... [2020-09-25 06:42:50,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:42:50,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:42:50,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:42:50,915 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:42:50,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:50" (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 06:42:51,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:42:51,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:42:51,014 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:42:51,014 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:42:51,014 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:42:51,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:42:51,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:42:51,015 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:42:51,016 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:42:51,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:42:51,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:42:52,575 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:42:52,575 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:42:52,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:42:52 BoogieIcfgContainer [2020-09-25 06:42:52,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:42:52,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:42:52,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:42:52,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:42:52,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:42:49" (1/3) ... [2020-09-25 06:42:52,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ca7549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:42:52, skipping insertion in model container [2020-09-25 06:42:52,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:50" (2/3) ... [2020-09-25 06:42:52,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ca7549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:42:52, skipping insertion in model container [2020-09-25 06:42:52,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:42:52" (3/3) ... [2020-09-25 06:42:52,595 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label42.c [2020-09-25 06:42:52,607 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:42:52,620 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:42:52,647 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:42:52,689 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:42:52,689 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:42:52,689 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:42:52,689 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:42:52,689 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:42:52,690 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:42:52,690 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:42:52,690 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:42:52,726 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 06:42:52,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 06:42:52,749 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:52,751 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:42:52,751 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:52,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:52,761 INFO L82 PathProgramCache]: Analyzing trace with hash 907543029, now seen corresponding path program 1 times [2020-09-25 06:42:52,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:52,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859035075] [2020-09-25 06:42:52,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:53,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:53,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:53,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:54,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:55,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:58,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:58,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:58,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 06:42:58,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:42:58,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-09-25 06:42:58,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:58,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:58,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:42:58,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 06:42:58,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 06:42:58,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 06:42:58,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:58,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:58,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:58,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:42:58,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:58,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 06:42:58,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:58,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:58,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:42:58,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:58,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:42:58,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:42:58,629 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 06:42:58,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859035075] [2020-09-25 06:42:58,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:42:58,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:42:58,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563626744] [2020-09-25 06:42:58,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:42:58,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:58,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:42:58,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:42:58,670 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 06:43:01,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:01,045 INFO L93 Difference]: Finished difference Result 1235 states and 1633 transitions. [2020-09-25 06:43:01,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:43:01,047 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-25 06:43:01,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:01,074 INFO L225 Difference]: With dead ends: 1235 [2020-09-25 06:43:01,074 INFO L226 Difference]: Without dead ends: 661 [2020-09-25 06:43:01,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 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 06:43:01,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2020-09-25 06:43:01,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 605. [2020-09-25 06:43:01,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2020-09-25 06:43:01,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 715 transitions. [2020-09-25 06:43:01,198 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 715 transitions. Word has length 143 [2020-09-25 06:43:01,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:01,199 INFO L479 AbstractCegarLoop]: Abstraction has 605 states and 715 transitions. [2020-09-25 06:43:01,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:43:01,200 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 715 transitions. [2020-09-25 06:43:01,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 06:43:01,207 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:01,207 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:43:01,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:43:01,208 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:01,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:01,209 INFO L82 PathProgramCache]: Analyzing trace with hash 201587256, now seen corresponding path program 1 times [2020-09-25 06:43:01,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:01,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159993648] [2020-09-25 06:43:01,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:01,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:01,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:01,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:01,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:04,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:04,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:05,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:06,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:06,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 06:43:06,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:43:06,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 06:43:06,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:06,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:06,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:06,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 06:43:06,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 06:43:06,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:43:06,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:06,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:06,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:06,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:06,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:06,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:43:06,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:06,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:06,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:06,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:06,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:06,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:43:06,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:06,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:06,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:06,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:06,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:43:06,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:06,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 06:43:06,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:06,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:06,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:06,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:06,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 06:43:06,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:06,563 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:43:06,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159993648] [2020-09-25 06:43:06,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:43:06,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:43:06,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955744482] [2020-09-25 06:43:06,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:43:06,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:06,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:43:06,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:43:06,572 INFO L87 Difference]: Start difference. First operand 605 states and 715 transitions. Second operand 5 states. [2020-09-25 06:43:08,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:08,493 INFO L93 Difference]: Finished difference Result 1505 states and 1856 transitions. [2020-09-25 06:43:08,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:43:08,494 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-09-25 06:43:08,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:08,501 INFO L225 Difference]: With dead ends: 1505 [2020-09-25 06:43:08,502 INFO L226 Difference]: Without dead ends: 924 [2020-09-25 06:43:08,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:43:08,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2020-09-25 06:43:08,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 891. [2020-09-25 06:43:08,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-09-25 06:43:08,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1084 transitions. [2020-09-25 06:43:08,566 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1084 transitions. Word has length 160 [2020-09-25 06:43:08,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:08,567 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1084 transitions. [2020-09-25 06:43:08,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:43:08,568 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1084 transitions. [2020-09-25 06:43:08,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-25 06:43:08,573 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:08,574 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:43:08,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:43:08,574 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:08,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:08,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1554589942, now seen corresponding path program 1 times [2020-09-25 06:43:08,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:08,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365028067] [2020-09-25 06:43:08,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:08,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:08,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:08,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:09,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:09,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:10,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:13,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:13,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-25 06:43:13,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:43:13,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 06:43:13,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:13,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:13,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:13,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 06:43:13,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 06:43:13,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:13,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:13,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:13,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:13,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:13,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:13,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:13,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:43:13,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:13,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:13,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:13,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:13,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:13,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:43:13,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:13,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:13,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:13,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:13,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:43:13,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:13,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 06:43:13,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:13,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:13,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:13,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:13,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:43:13,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:13,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 06:43:13,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:13,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:13,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:13,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 06:43:13,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:13,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 06:43:13,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:13,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:13,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:13,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:43:13,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 06:43:13,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:14,063 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:43:14,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365028067] [2020-09-25 06:43:14,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:43:14,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:43:14,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638911794] [2020-09-25 06:43:14,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:43:14,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:14,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:43:14,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:43:14,072 INFO L87 Difference]: Start difference. First operand 891 states and 1084 transitions. Second operand 7 states. [2020-09-25 06:43:16,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:16,318 INFO L93 Difference]: Finished difference Result 2144 states and 2702 transitions. [2020-09-25 06:43:16,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:43:16,318 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 205 [2020-09-25 06:43:16,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:16,328 INFO L225 Difference]: With dead ends: 2144 [2020-09-25 06:43:16,329 INFO L226 Difference]: Without dead ends: 1277 [2020-09-25 06:43:16,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:43:16,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2020-09-25 06:43:16,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1077. [2020-09-25 06:43:16,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1077 states. [2020-09-25 06:43:16,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1328 transitions. [2020-09-25 06:43:16,380 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1328 transitions. Word has length 205 [2020-09-25 06:43:16,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:16,380 INFO L479 AbstractCegarLoop]: Abstraction has 1077 states and 1328 transitions. [2020-09-25 06:43:16,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:43:16,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1328 transitions. [2020-09-25 06:43:16,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 06:43:16,387 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:16,388 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:43:16,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:43:16,388 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:16,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:16,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1933456907, now seen corresponding path program 1 times [2020-09-25 06:43:16,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:16,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848562809] [2020-09-25 06:43:16,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:16,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:16,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:16,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:17,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:18,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:19,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:20,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:21,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:21,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:21,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:21,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:21,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:21,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-09-25 06:43:21,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 06:43:21,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-25 06:43:21,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:21,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:21,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:43:21,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 06:43:21,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 06:43:21,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 06:43:21,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:21,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:21,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:21,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:21,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:21,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:21,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:43:21,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:21,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:21,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:21,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:21,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:21,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:43:21,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:21,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:21,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:21,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 06:43:21,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:21,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 06:43:21,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:21,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:21,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:43:21,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:21,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:43:21,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:21,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 06:43:21,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:21,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:21,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:21,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 06:43:21,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:21,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 06:43:21,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:21,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:21,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:21,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:43:21,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 06:43:21,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:22,050 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:43:22,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848562809] [2020-09-25 06:43:22,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:43:22,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:43:22,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481924205] [2020-09-25 06:43:22,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:43:22,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:22,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:43:22,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:43:22,055 INFO L87 Difference]: Start difference. First operand 1077 states and 1328 transitions. Second operand 8 states. [2020-09-25 06:43:22,695 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-09-25 06:43:25,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:25,578 INFO L93 Difference]: Finished difference Result 2857 states and 3593 transitions. [2020-09-25 06:43:25,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 06:43:25,579 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 212 [2020-09-25 06:43:25,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:25,588 INFO L225 Difference]: With dead ends: 2857 [2020-09-25 06:43:25,589 INFO L226 Difference]: Without dead ends: 1804 [2020-09-25 06:43:25,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-09-25 06:43:25,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1804 states. [2020-09-25 06:43:25,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1804 to 1701. [2020-09-25 06:43:25,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1701 states. [2020-09-25 06:43:25,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1701 states to 1701 states and 2088 transitions. [2020-09-25 06:43:25,656 INFO L78 Accepts]: Start accepts. Automaton has 1701 states and 2088 transitions. Word has length 212 [2020-09-25 06:43:25,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:25,657 INFO L479 AbstractCegarLoop]: Abstraction has 1701 states and 2088 transitions. [2020-09-25 06:43:25,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:43:25,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1701 states and 2088 transitions. [2020-09-25 06:43:25,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-09-25 06:43:25,667 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:25,668 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:43:25,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:43:25,668 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:25,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:25,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1545156718, now seen corresponding path program 1 times [2020-09-25 06:43:25,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:25,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1046252748] [2020-09-25 06:43:25,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:25,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:25,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:26,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:26,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:26,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:26,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:26,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:26,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:27,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:27,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:30,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:30,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-09-25 06:43:30,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 06:43:30,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 06:43:30,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:30,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:30,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:30,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-09-25 06:43:30,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 06:43:30,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:30,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:30,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:30,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:30,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:30,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:30,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:30,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:43:30,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:30,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:30,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:30,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:30,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:30,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:43:30,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:30,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:30,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:30,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 06:43:30,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:30,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:43:30,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:30,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:30,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:30,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:30,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:30,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:43:30,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 06:43:30,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:30,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:30,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:30,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 06:43:30,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:30,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 06:43:30,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:30,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:30,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:30,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:30,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 06:43:30,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:43:31,054 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 06:43:31,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1046252748] [2020-09-25 06:43:31,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:43:31,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:43:31,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406918251] [2020-09-25 06:43:31,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:43:31,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:31,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:43:31,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:43:31,057 INFO L87 Difference]: Start difference. First operand 1701 states and 2088 transitions. Second operand 5 states. [2020-09-25 06:43:33,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:33,078 INFO L93 Difference]: Finished difference Result 3960 states and 4893 transitions. [2020-09-25 06:43:33,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:43:33,079 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 227 [2020-09-25 06:43:33,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:33,088 INFO L225 Difference]: With dead ends: 3960 [2020-09-25 06:43:33,089 INFO L226 Difference]: Without dead ends: 1632 [2020-09-25 06:43:33,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:43:33,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2020-09-25 06:43:33,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1622. [2020-09-25 06:43:33,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1622 states. [2020-09-25 06:43:33,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 1963 transitions. [2020-09-25 06:43:33,144 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 1963 transitions. Word has length 227 [2020-09-25 06:43:33,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:33,145 INFO L479 AbstractCegarLoop]: Abstraction has 1622 states and 1963 transitions. [2020-09-25 06:43:33,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:43:33,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 1963 transitions. [2020-09-25 06:43:33,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-25 06:43:33,153 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:33,153 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:43:33,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:43:33,154 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:33,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:33,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1062084122, now seen corresponding path program 1 times [2020-09-25 06:43:33,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:33,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313562071] [2020-09-25 06:43:33,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:33,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:33,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:33,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:33,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:33,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:33,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:33,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:33,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:33,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:34,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:34,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:38,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:38,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-09-25 06:43:38,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 06:43:38,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-25 06:43:38,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:38,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:38,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:43:38,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 06:43:38,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-09-25 06:43:38,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:38,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:38,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:38,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:38,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:38,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:38,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 06:43:38,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:38,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:38,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:38,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:38,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:38,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:38,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:38,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:38,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:38,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:38,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 06:43:38,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:38,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 06:43:38,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:38,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:38,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:38,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:38,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 06:43:38,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:38,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 06:43:38,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:38,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:38,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:38,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:38,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 06:43:38,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:43:38,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-09-25 06:43:38,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:38,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:38,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:38,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:38,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 06:43:38,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:38,882 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 64 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-25 06:43:38,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313562071] [2020-09-25 06:43:38,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:43:38,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 06:43:38,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438938498] [2020-09-25 06:43:38,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:43:38,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:38,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:43:38,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:43:38,887 INFO L87 Difference]: Start difference. First operand 1622 states and 1963 transitions. Second operand 6 states.