/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:30:50,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:30:50,636 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:30:50,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:30:50,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:30:50,691 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:30:50,693 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:30:50,696 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:30:50,699 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:30:50,702 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:30:50,703 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:30:50,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:30:50,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:30:50,706 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:30:50,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:30:50,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:30:50,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:30:50,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:30:50,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:30:50,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:30:50,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:30:50,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:30:50,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:30:50,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:30:50,720 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:30:50,720 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:30:50,720 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:30:50,721 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:30:50,722 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:30:50,723 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:30:50,723 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:30:50,724 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:30:50,725 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:30:50,726 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:30:50,727 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:30:50,727 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:30:50,728 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:30:50,728 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:30:50,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:30:50,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:30:50,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:30:50,731 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 [2020-09-24 19:30:50,756 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:30:50,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:30:50,757 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:30:50,757 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:30:50,758 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:30:50,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:30:50,758 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:30:50,758 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:30:50,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:30:50,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:30:50,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:30:50,759 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:30:50,759 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:30:50,760 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:30:50,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:30:50,760 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:30:50,760 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:30:50,760 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:30:50,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:30:50,761 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:30:50,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:30:50,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:30:50,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:30:50,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:30:50,762 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:30:50,762 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:30:50,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:30:50,763 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:30:50,763 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:30:50,763 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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:30:51,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:30:51,232 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:30:51,236 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:30:51,238 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:30:51,239 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:30:51,240 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label38.c [2020-09-24 19:30:51,340 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1e2614a1/e662afdd41e2412dbf5868ddc11faf77/FLAGd15c8b7a6 [2020-09-24 19:30:52,036 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:30:52,037 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label38.c [2020-09-24 19:30:52,063 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1e2614a1/e662afdd41e2412dbf5868ddc11faf77/FLAGd15c8b7a6 [2020-09-24 19:30:52,225 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1e2614a1/e662afdd41e2412dbf5868ddc11faf77 [2020-09-24 19:30:52,238 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:30:52,245 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:30:52,246 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:30:52,246 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:30:52,251 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:30:52,252 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:30:52" (1/1) ... [2020-09-24 19:30:52,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb9461a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:52, skipping insertion in model container [2020-09-24 19:30:52,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:30:52" (1/1) ... [2020-09-24 19:30:52,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:30:52,354 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:30:52,952 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:30:52,957 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:30:53,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:30:53,271 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:30:53,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:53 WrapperNode [2020-09-24 19:30:53,272 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:30:53,273 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:30:53,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:30:53,274 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:30:53,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:53" (1/1) ... [2020-09-24 19:30:53,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:53" (1/1) ... [2020-09-24 19:30:53,317 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:53" (1/1) ... [2020-09-24 19:30:53,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:53" (1/1) ... [2020-09-24 19:30:53,363 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:53" (1/1) ... [2020-09-24 19:30:53,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:53" (1/1) ... [2020-09-24 19:30:53,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:53" (1/1) ... [2020-09-24 19:30:53,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:30:53,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:30:53,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:30:53,429 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:30:53,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:53" (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 [2020-09-24 19:30:53,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:30:53,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:30:53,518 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 19:30:53,518 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:30:53,518 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 19:30:53,518 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:30:53,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:30:53,519 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 19:30:53,519 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:30:53,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:30:53,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:30:55,280 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:30:55,280 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 19:30:55,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:30:55 BoogieIcfgContainer [2020-09-24 19:30:55,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:30:55,292 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:30:55,293 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:30:55,297 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:30:55,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:30:52" (1/3) ... [2020-09-24 19:30:55,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@621b2832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:30:55, skipping insertion in model container [2020-09-24 19:30:55,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:53" (2/3) ... [2020-09-24 19:30:55,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@621b2832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:30:55, skipping insertion in model container [2020-09-24 19:30:55,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:30:55" (3/3) ... [2020-09-24 19:30:55,301 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label38.c [2020-09-24 19:30:55,314 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:30:55,326 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:30:55,350 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:30:55,388 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:30:55,389 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:30:55,389 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:30:55,389 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:30:55,389 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:30:55,390 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:30:55,390 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:30:55,390 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:30:55,428 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-24 19:30:55,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 19:30:55,441 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:55,442 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] [2020-09-24 19:30:55,443 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:55,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:55,451 INFO L82 PathProgramCache]: Analyzing trace with hash -496136462, now seen corresponding path program 1 times [2020-09-24 19:30:55,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:55,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127539131] [2020-09-24 19:30:55,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:55,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:55,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:56,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:56,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:56,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:56,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 19:30:56,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:30:56,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1009 [2020-09-24 19:30:56,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:56,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:30:56,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 19:30:56,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-24 19:30:56,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 19:30:56,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:56,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:56,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:56,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:56,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:56,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:56,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 19:30:56,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:56,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:56,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:56,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:30:56,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:56,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:30:56,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127539131] [2020-09-24 19:30:56,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:30:56,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 19:30:56,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915416785] [2020-09-24 19:30:56,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:30:56,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:56,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:30:56,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:30:56,978 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 5 states. [2020-09-24 19:31:01,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:31:01,211 INFO L93 Difference]: Finished difference Result 1943 states and 2666 transitions. [2020-09-24 19:31:01,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 19:31:01,220 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-09-24 19:31:01,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:31:01,257 INFO L225 Difference]: With dead ends: 1943 [2020-09-24 19:31:01,257 INFO L226 Difference]: Without dead ends: 1170 [2020-09-24 19:31:01,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:31:01,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2020-09-24 19:31:01,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1129. [2020-09-24 19:31:01,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1129 states. [2020-09-24 19:31:01,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 1319 transitions. [2020-09-24 19:31:01,429 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 1319 transitions. Word has length 69 [2020-09-24 19:31:01,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:31:01,431 INFO L479 AbstractCegarLoop]: Abstraction has 1129 states and 1319 transitions. [2020-09-24 19:31:01,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:31:01,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 1319 transitions. [2020-09-24 19:31:01,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-24 19:31:01,450 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:31:01,452 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, 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] [2020-09-24 19:31:01,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:31:01,453 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:31:01,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:31:01,453 INFO L82 PathProgramCache]: Analyzing trace with hash -2042415941, now seen corresponding path program 1 times [2020-09-24 19:31:01,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:31:01,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161399014] [2020-09-24 19:31:01,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:31:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:01,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:01,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:02,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:02,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:02,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:02,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-24 19:31:02,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:31:02,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-09-24 19:31:02,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:02,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:31:02,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 19:31:02,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-24 19:31:02,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:31:02,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:31:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:02,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:02,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:02,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:31:02,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:02,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 19:31:02,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:02,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:31:02,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:02,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 19:31:02,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:02,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:31:02,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:02,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:03,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:03,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 19:31:03,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:03,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 328 [2020-09-24 19:31:03,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:03,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:03,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:31:03,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-24 19:31:03,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-24 19:31:03,308 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:31:03,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161399014] [2020-09-24 19:31:03,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:31:03,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 19:31:03,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290934971] [2020-09-24 19:31:03,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:31:03,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:31:03,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:31:03,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:31:03,313 INFO L87 Difference]: Start difference. First operand 1129 states and 1319 transitions. Second operand 7 states. [2020-09-24 19:31:06,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:31:06,728 INFO L93 Difference]: Finished difference Result 2888 states and 3504 transitions. [2020-09-24 19:31:06,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:31:06,728 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 163 [2020-09-24 19:31:06,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:31:06,739 INFO L225 Difference]: With dead ends: 2888 [2020-09-24 19:31:06,739 INFO L226 Difference]: Without dead ends: 1774 [2020-09-24 19:31:06,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:31:06,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2020-09-24 19:31:06,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 1714. [2020-09-24 19:31:06,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1714 states. [2020-09-24 19:31:06,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1714 states to 1714 states and 2016 transitions. [2020-09-24 19:31:06,802 INFO L78 Accepts]: Start accepts. Automaton has 1714 states and 2016 transitions. Word has length 163 [2020-09-24 19:31:06,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:31:06,803 INFO L479 AbstractCegarLoop]: Abstraction has 1714 states and 2016 transitions. [2020-09-24 19:31:06,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:31:06,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1714 states and 2016 transitions. [2020-09-24 19:31:06,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-09-24 19:31:06,811 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:31:06,812 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:31:06,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:31:06,812 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:31:06,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:31:06,813 INFO L82 PathProgramCache]: Analyzing trace with hash 452640985, now seen corresponding path program 1 times [2020-09-24 19:31:06,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:31:06,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980229413] [2020-09-24 19:31:06,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:31:06,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:06,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:07,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:07,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:07,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:07,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:07,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-09-24 19:31:07,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:31:07,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1050 [2020-09-24 19:31:07,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:07,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 19:31:07,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 19:31:07,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-09-24 19:31:07,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:08,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:31:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:08,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:08,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:08,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:31:08,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:08,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 19:31:08,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:08,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:31:08,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:08,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 19:31:08,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:31:08,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:31:08,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:08,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:08,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:08,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 19:31:08,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:08,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-09-24 19:31:08,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:08,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:31:08,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:31:08,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 19:31:08,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:08,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 19:31:08,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:08,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:08,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:08,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 19:31:08,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:08,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-24 19:31:08,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:08,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:08,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:31:08,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-24 19:31:08,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:09,008 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 109 proven. 75 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:31:09,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980229413] [2020-09-24 19:31:09,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:31:09,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 19:31:09,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94379153] [2020-09-24 19:31:09,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 19:31:09,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:31:09,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 19:31:09,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:31:09,013 INFO L87 Difference]: Start difference. First operand 1714 states and 2016 transitions. Second operand 11 states. [2020-09-24 19:31:13,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:31:13,495 INFO L93 Difference]: Finished difference Result 3533 states and 4155 transitions. [2020-09-24 19:31:13,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 19:31:13,496 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 246 [2020-09-24 19:31:13,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:31:13,508 INFO L225 Difference]: With dead ends: 3533 [2020-09-24 19:31:13,508 INFO L226 Difference]: Without dead ends: 2265 [2020-09-24 19:31:13,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2020-09-24 19:31:13,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2265 states. [2020-09-24 19:31:13,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2265 to 1760. [2020-09-24 19:31:13,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1760 states. [2020-09-24 19:31:13,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1760 states to 1760 states and 2054 transitions. [2020-09-24 19:31:13,570 INFO L78 Accepts]: Start accepts. Automaton has 1760 states and 2054 transitions. Word has length 246 [2020-09-24 19:31:13,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:31:13,571 INFO L479 AbstractCegarLoop]: Abstraction has 1760 states and 2054 transitions. [2020-09-24 19:31:13,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 19:31:13,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 2054 transitions. [2020-09-24 19:31:13,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-09-24 19:31:13,576 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:31:13,577 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:31:13,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:31:13,577 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:31:13,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:31:13,578 INFO L82 PathProgramCache]: Analyzing trace with hash -346704423, now seen corresponding path program 1 times [2020-09-24 19:31:13,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:31:13,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060186272] [2020-09-24 19:31:13,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:31:13,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:13,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:13,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:14,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:14,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:14,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-09-24 19:31:14,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:31:14,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1044 [2020-09-24 19:31:14,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:14,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:14,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-09-24 19:31:14,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-24 19:31:14,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:14,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:31:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:14,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:14,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:14,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:31:14,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:14,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:31:14,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:14,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:14,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:14,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:14,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:14,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:31:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:14,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:14,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:14,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 19:31:14,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:14,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-09-24 19:31:14,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:14,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:31:14,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:14,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-24 19:31:14,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:15,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 19:31:15,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:15,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:15,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:15,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 19:31:15,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:15,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-24 19:31:15,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:15,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:15,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:31:15,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 19:31:15,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:15,287 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:31:15,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060186272] [2020-09-24 19:31:15,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:31:15,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:31:15,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841308448] [2020-09-24 19:31:15,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:31:15,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:31:15,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:31:15,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:31:15,291 INFO L87 Difference]: Start difference. First operand 1760 states and 2054 transitions. Second operand 7 states. [2020-09-24 19:31:18,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:31:18,743 INFO L93 Difference]: Finished difference Result 3617 states and 4385 transitions. [2020-09-24 19:31:18,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:31:18,744 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 266 [2020-09-24 19:31:18,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:31:18,756 INFO L225 Difference]: With dead ends: 3617 [2020-09-24 19:31:18,756 INFO L226 Difference]: Without dead ends: 2343 [2020-09-24 19:31:18,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:31:18,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2343 states. [2020-09-24 19:31:18,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2343 to 2262. [2020-09-24 19:31:18,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2262 states. [2020-09-24 19:31:18,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2262 states to 2262 states and 2681 transitions. [2020-09-24 19:31:18,825 INFO L78 Accepts]: Start accepts. Automaton has 2262 states and 2681 transitions. Word has length 266 [2020-09-24 19:31:18,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:31:18,825 INFO L479 AbstractCegarLoop]: Abstraction has 2262 states and 2681 transitions. [2020-09-24 19:31:18,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:31:18,826 INFO L276 IsEmpty]: Start isEmpty. Operand 2262 states and 2681 transitions. [2020-09-24 19:31:18,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-09-24 19:31:18,832 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:31:18,832 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:31:18,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:31:18,833 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:31:18,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:31:18,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1919390587, now seen corresponding path program 1 times [2020-09-24 19:31:18,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:31:18,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460083805] [2020-09-24 19:31:18,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:31:18,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:18,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:19,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:19,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:19,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:19,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:19,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-09-24 19:31:19,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:31:19,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1013 [2020-09-24 19:31:19,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:19,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:19,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 243 [2020-09-24 19:31:19,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-24 19:31:19,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:19,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:31:20,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:20,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:20,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:20,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:31:20,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:20,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:31:20,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:20,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:20,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:20,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:20,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:20,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:31:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:20,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:20,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:20,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-24 19:31:20,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:20,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 19:31:20,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:20,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:20,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:20,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:20,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:20,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-09-24 19:31:20,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:20,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:20,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:20,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 19:31:20,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:20,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-24 19:31:20,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:20,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:31:20,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:20,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 19:31:20,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:20,288 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-09-24 19:31:20,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460083805] [2020-09-24 19:31:20,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:31:20,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:31:20,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766492350] [2020-09-24 19:31:20,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:31:20,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:31:20,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:31:20,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:31:20,291 INFO L87 Difference]: Start difference. First operand 2262 states and 2681 transitions. Second operand 5 states. [2020-09-24 19:31:23,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:31:23,270 INFO L93 Difference]: Finished difference Result 4618 states and 5658 transitions. [2020-09-24 19:31:23,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:31:23,278 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 294 [2020-09-24 19:31:23,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:31:23,288 INFO L225 Difference]: With dead ends: 4618 [2020-09-24 19:31:23,288 INFO L226 Difference]: Without dead ends: 2130 [2020-09-24 19:31:23,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:31:23,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2130 states. [2020-09-24 19:31:23,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2130 to 1899. [2020-09-24 19:31:23,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1899 states. [2020-09-24 19:31:23,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1899 states to 1899 states and 2223 transitions. [2020-09-24 19:31:23,343 INFO L78 Accepts]: Start accepts. Automaton has 1899 states and 2223 transitions. Word has length 294 [2020-09-24 19:31:23,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:31:23,344 INFO L479 AbstractCegarLoop]: Abstraction has 1899 states and 2223 transitions. [2020-09-24 19:31:23,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:31:23,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1899 states and 2223 transitions. [2020-09-24 19:31:23,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2020-09-24 19:31:23,353 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:31:23,354 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:31:23,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:31:23,354 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:31:23,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:31:23,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1102853902, now seen corresponding path program 1 times [2020-09-24 19:31:23,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:31:23,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004901658] [2020-09-24 19:31:23,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:31:23,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:23,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:23,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:23,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:24,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:24,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:24,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 403 [2020-09-24 19:31:24,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:31:24,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1013 [2020-09-24 19:31:24,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:24,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:24,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-09-24 19:31:24,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-24 19:31:24,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:24,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:31:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:24,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:24,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:24,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:31:24,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:24,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 19:31:24,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:24,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:24,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:24,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:24,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:24,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:31:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:24,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:24,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:24,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-24 19:31:24,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:24,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-24 19:31:24,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:24,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:31:24,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:24,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-24 19:31:24,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:24,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-09-24 19:31:24,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:24,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:24,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:24,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 19:31:24,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:24,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-24 19:31:24,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:24,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:24,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:31:24,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 19:31:24,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:24,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-09-24 19:31:24,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:24,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:24,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:24,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 19:31:24,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:24,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-24 19:31:24,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:24,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:24,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-09-24 19:31:24,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:24,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:25,109 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 244 proven. 71 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-09-24 19:31:25,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004901658] [2020-09-24 19:31:25,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:31:25,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:31:25,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462754001] [2020-09-24 19:31:25,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:31:25,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:31:25,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:31:25,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:31:25,112 INFO L87 Difference]: Start difference. First operand 1899 states and 2223 transitions. Second operand 7 states. [2020-09-24 19:31:29,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:31:29,332 INFO L93 Difference]: Finished difference Result 5472 states and 6677 transitions. [2020-09-24 19:31:29,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:31:29,333 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 388 [2020-09-24 19:31:29,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:31:29,350 INFO L225 Difference]: With dead ends: 5472 [2020-09-24 19:31:29,350 INFO L226 Difference]: Without dead ends: 3588 [2020-09-24 19:31:29,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:31:29,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3588 states. [2020-09-24 19:31:29,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3588 to 3289. [2020-09-24 19:31:29,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3289 states. [2020-09-24 19:31:29,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3289 states to 3289 states and 3805 transitions. [2020-09-24 19:31:29,438 INFO L78 Accepts]: Start accepts. Automaton has 3289 states and 3805 transitions. Word has length 388 [2020-09-24 19:31:29,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:31:29,438 INFO L479 AbstractCegarLoop]: Abstraction has 3289 states and 3805 transitions. [2020-09-24 19:31:29,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:31:29,439 INFO L276 IsEmpty]: Start isEmpty. Operand 3289 states and 3805 transitions. [2020-09-24 19:31:29,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-09-24 19:31:29,449 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:31:29,450 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:31:29,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:31:29,450 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:31:29,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:31:29,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1237622523, now seen corresponding path program 1 times [2020-09-24 19:31:29,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:31:29,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25156999] [2020-09-24 19:31:29,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:31:29,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:29,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:29,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:30,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:30,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:30,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 404 [2020-09-24 19:31:30,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:31:30,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1029 [2020-09-24 19:31:30,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:30,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:31:30,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:31:30,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-24 19:31:30,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:30,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:31:30,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:30,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:30,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:30,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:31:30,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:30,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 19:31:30,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:30,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:31:30,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:30,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:31:30,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:30,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:31:30,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:30,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:30,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:30,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-24 19:31:30,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:30,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-09-24 19:31:30,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:30,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:30,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:31:30,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-24 19:31:30,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:31,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-09-24 19:31:31,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:31,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:31,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:31,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 19:31:31,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:31,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 19:31:31,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:31,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:31,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-09-24 19:31:31,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:31,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:31:31,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-09-24 19:31:31,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:31,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:31,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:31,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 19:31:31,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:31,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-24 19:31:31,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:31,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:31,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-09-24 19:31:31,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:31,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:31,446 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 159 proven. 146 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2020-09-24 19:31:31,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25156999] [2020-09-24 19:31:31,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:31:31,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:31:31,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965868702] [2020-09-24 19:31:31,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:31:31,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:31:31,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:31:31,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:31:31,449 INFO L87 Difference]: Start difference. First operand 3289 states and 3805 transitions. Second operand 8 states. [2020-09-24 19:31:36,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:31:36,655 INFO L93 Difference]: Finished difference Result 7938 states and 9557 transitions. [2020-09-24 19:31:36,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 19:31:36,656 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 389 [2020-09-24 19:31:36,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:31:36,674 INFO L225 Difference]: With dead ends: 7938 [2020-09-24 19:31:36,674 INFO L226 Difference]: Without dead ends: 4449 [2020-09-24 19:31:36,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-24 19:31:36,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4449 states. [2020-09-24 19:31:36,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4449 to 4243. [2020-09-24 19:31:36,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4243 states. [2020-09-24 19:31:36,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4243 states to 4243 states and 5085 transitions. [2020-09-24 19:31:36,778 INFO L78 Accepts]: Start accepts. Automaton has 4243 states and 5085 transitions. Word has length 389 [2020-09-24 19:31:36,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:31:36,778 INFO L479 AbstractCegarLoop]: Abstraction has 4243 states and 5085 transitions. [2020-09-24 19:31:36,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:31:36,779 INFO L276 IsEmpty]: Start isEmpty. Operand 4243 states and 5085 transitions. [2020-09-24 19:31:36,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2020-09-24 19:31:36,794 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:31:36,795 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:31:36,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:31:36,795 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:31:36,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:31:36,796 INFO L82 PathProgramCache]: Analyzing trace with hash -392241696, now seen corresponding path program 1 times [2020-09-24 19:31:36,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:31:36,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359288660] [2020-09-24 19:31:36,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:31:36,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:37,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:37,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:37,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:37,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:37,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 524 [2020-09-24 19:31:37,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:31:37,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1052 [2020-09-24 19:31:37,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:37,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:37,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 134 [2020-09-24 19:31:37,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-24 19:31:37,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:38,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:31:38,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:38,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:38,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:38,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:31:38,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:38,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:31:38,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:38,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:38,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:38,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:38,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:38,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:31:38,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:38,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:38,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:38,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 19:31:38,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:38,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-24 19:31:38,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:38,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:31:38,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:31:38,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-24 19:31:38,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:38,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 19:31:38,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:38,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:38,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:38,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-24 19:31:38,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:38,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-09-24 19:31:38,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:38,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:31:38,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:31:38,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-24 19:31:38,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:38,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-09-24 19:31:38,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:38,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:38,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:38,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 19:31:38,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:38,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-24 19:31:38,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:38,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:38,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-09-24 19:31:38,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:38,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:38,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-09-24 19:31:38,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:31:38,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:31:38,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:31:38,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 19:31:38,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:31:38,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 19:31:38,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:31:38,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:31:38,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-09-24 19:31:38,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:31:38,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:31:39,549 INFO L134 CoverageAnalysis]: Checked inductivity of 743 backedges. 345 proven. 152 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2020-09-24 19:31:39,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359288660] [2020-09-24 19:31:39,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:31:39,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:31:39,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502770613] [2020-09-24 19:31:39,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:31:39,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:31:39,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:31:39,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:31:39,552 INFO L87 Difference]: Start difference. First operand 4243 states and 5085 transitions. Second operand 7 states.