/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:34:21,519 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:34:21,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:34:21,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:34:21,554 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:34:21,555 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:34:21,556 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:34:21,558 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:34:21,560 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:34:21,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:34:21,562 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:34:21,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:34:21,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:34:21,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:34:21,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:34:21,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:34:21,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:34:21,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:34:21,572 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:34:21,574 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:34:21,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:34:21,577 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:34:21,579 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:34:21,580 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:34:21,583 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:34:21,583 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:34:21,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:34:21,584 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:34:21,585 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:34:21,586 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:34:21,586 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:34:21,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:34:21,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:34:21,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:34:21,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:34:21,591 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:34:21,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:34:21,592 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:34:21,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:34:21,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:34:21,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:34:21,595 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 13:34:21,644 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:34:21,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:34:21,648 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:34:21,648 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:34:21,648 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:34:21,649 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:34:21,649 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:34:21,649 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:34:21,649 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:34:21,649 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:34:21,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:34:21,650 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:34:21,651 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:34:21,651 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:34:21,651 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:34:21,651 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:34:21,651 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:34:21,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:34:21,652 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:34:21,652 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:34:21,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:34:21,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:34:21,654 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:34:21,654 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:34:21,654 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:34:21,654 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:34:21,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:34:21,655 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:34:21,655 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:34:21,656 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:34:22,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:34:22,136 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:34:22,141 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:34:22,143 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:34:22,144 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:34:22,146 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label30.c [2020-09-25 13:34:22,228 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6dd2b928b/c9469d387e124b4f88877b11a5f2215d/FLAGe3d597aea [2020-09-25 13:34:22,883 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:34:22,887 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label30.c [2020-09-25 13:34:22,904 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6dd2b928b/c9469d387e124b4f88877b11a5f2215d/FLAGe3d597aea [2020-09-25 13:34:23,125 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6dd2b928b/c9469d387e124b4f88877b11a5f2215d [2020-09-25 13:34:23,140 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:34:23,147 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:34:23,148 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:34:23,148 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:34:23,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:34:23,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:34:23" (1/1) ... [2020-09-25 13:34:23,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39c1a6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:23, skipping insertion in model container [2020-09-25 13:34:23,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:34:23" (1/1) ... [2020-09-25 13:34:23,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:34:23,249 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:34:23,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:34:23,755 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:34:23,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:34:24,013 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:34:24,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:24 WrapperNode [2020-09-25 13:34:24,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:34:24,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:34:24,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:34:24,014 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:34:24,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:24" (1/1) ... [2020-09-25 13:34:24,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:24" (1/1) ... [2020-09-25 13:34:24,050 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:24" (1/1) ... [2020-09-25 13:34:24,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:24" (1/1) ... [2020-09-25 13:34:24,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:24" (1/1) ... [2020-09-25 13:34:24,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:24" (1/1) ... [2020-09-25 13:34:24,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:24" (1/1) ... [2020-09-25 13:34:24,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:34:24,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:34:24,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:34:24,158 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:34:24,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:34:24,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:34:24,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:34:24,254 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:34:24,255 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:34:24,255 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:34:24,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:34:24,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:34:24,256 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:34:24,256 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:34:24,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:34:24,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:34:25,860 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:34:25,860 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:34:25,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:34:25 BoogieIcfgContainer [2020-09-25 13:34:25,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:34:25,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:34:25,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:34:25,883 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:34:25,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:34:23" (1/3) ... [2020-09-25 13:34:25,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e7fb60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:34:25, skipping insertion in model container [2020-09-25 13:34:25,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:24" (2/3) ... [2020-09-25 13:34:25,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e7fb60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:34:25, skipping insertion in model container [2020-09-25 13:34:25,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:34:25" (3/3) ... [2020-09-25 13:34:25,889 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label30.c [2020-09-25 13:34:25,902 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:34:25,916 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:34:25,940 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:34:25,981 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:34:25,981 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:34:25,981 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:34:25,981 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:34:25,982 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:34:25,982 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:34:25,982 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:34:25,982 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:34:26,012 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 13:34:26,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 13:34:26,023 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:26,025 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:34:26,025 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:26,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:26,034 INFO L82 PathProgramCache]: Analyzing trace with hash -985821505, now seen corresponding path program 1 times [2020-09-25 13:34:26,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:26,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192798223] [2020-09-25 13:34:26,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:26,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:26,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:26,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:27,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:27,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 13:34:27,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:34:27,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 797 [2020-09-25 13:34:27,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:27,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:27,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:34:27,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:34:27,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 13:34:27,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 13:34:27,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:27,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:27,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:27,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:27,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:27,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 13:34:27,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:27,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:27,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:27,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:27,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:34:27,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:27,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:34:27,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [192798223] [2020-09-25 13:34:27,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:34:27,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:34:27,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460156330] [2020-09-25 13:34:27,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:34:27,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:27,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:34:27,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:34:27,247 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 13:34:29,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:29,309 INFO L93 Difference]: Finished difference Result 1089 states and 1514 transitions. [2020-09-25 13:34:29,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:34:29,312 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-09-25 13:34:29,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:29,335 INFO L225 Difference]: With dead ends: 1089 [2020-09-25 13:34:29,335 INFO L226 Difference]: Without dead ends: 575 [2020-09-25 13:34:29,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:34:29,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-09-25 13:34:29,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2020-09-25 13:34:29,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-25 13:34:29,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 642 transitions. [2020-09-25 13:34:29,442 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 642 transitions. Word has length 53 [2020-09-25 13:34:29,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:29,443 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 642 transitions. [2020-09-25 13:34:29,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:34:29,443 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 642 transitions. [2020-09-25 13:34:29,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 13:34:29,454 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:29,455 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:34:29,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:34:29,455 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:29,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:29,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1694818480, now seen corresponding path program 1 times [2020-09-25 13:34:29,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:29,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763864012] [2020-09-25 13:34:29,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:29,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:29,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:29,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:29,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:30,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:30,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:34,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:34,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 13:34:34,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:34:34,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 13:34:34,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:34,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:34,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:34:34,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:34:34,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 13:34:34,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:34,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:34,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:34,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:34,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:34,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:34,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:34,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 13:34:34,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:34,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:34,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:34,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:34,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:34:34,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:34,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:34,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:34,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:34,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:34,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:34,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:34:34,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:34:34,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-25 13:34:34,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:34,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:34,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:34,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:34,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 13:34:34,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:34,923 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 13:34:34,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763864012] [2020-09-25 13:34:34,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:34,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:34:34,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363355698] [2020-09-25 13:34:34,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:34:34,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:34,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:34:34,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:34:34,929 INFO L87 Difference]: Start difference. First operand 545 states and 642 transitions. Second operand 5 states. [2020-09-25 13:34:36,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:36,732 INFO L93 Difference]: Finished difference Result 1389 states and 1702 transitions. [2020-09-25 13:34:36,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:34:36,733 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-09-25 13:34:36,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:36,739 INFO L225 Difference]: With dead ends: 1389 [2020-09-25 13:34:36,740 INFO L226 Difference]: Without dead ends: 859 [2020-09-25 13:34:36,742 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 [2020-09-25 13:34:36,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-09-25 13:34:36,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 849. [2020-09-25 13:34:36,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 849 states. [2020-09-25 13:34:36,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1017 transitions. [2020-09-25 13:34:36,780 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1017 transitions. Word has length 132 [2020-09-25 13:34:36,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:36,780 INFO L479 AbstractCegarLoop]: Abstraction has 849 states and 1017 transitions. [2020-09-25 13:34:36,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:34:36,781 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1017 transitions. [2020-09-25 13:34:36,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 13:34:36,784 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:36,784 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:34:36,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:34:36,785 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:36,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:36,785 INFO L82 PathProgramCache]: Analyzing trace with hash 550197362, now seen corresponding path program 1 times [2020-09-25 13:34:36,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:36,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766165158] [2020-09-25 13:34:36,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:36,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:36,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:37,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:37,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:37,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:39,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:39,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 13:34:39,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:34:39,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2626 [2020-09-25 13:34:39,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:39,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:39,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 13:34:39,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:34:39,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 13:34:39,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:39,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:39,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:39,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:39,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:39,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:39,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 13:34:39,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:39,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:39,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:34:39,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:39,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:34:39,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:39,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:39,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:39,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:39,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:39,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:34:39,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:39,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-25 13:34:39,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:39,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:39,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:34:39,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:39,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:34:39,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:39,974 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 20 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:34:39,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766165158] [2020-09-25 13:34:39,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:39,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 13:34:39,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318276081] [2020-09-25 13:34:39,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 13:34:39,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:39,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 13:34:39,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:34:39,978 INFO L87 Difference]: Start difference. First operand 849 states and 1017 transitions. Second operand 12 states. [2020-09-25 13:34:44,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:44,172 INFO L93 Difference]: Finished difference Result 3131 states and 3961 transitions. [2020-09-25 13:34:44,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 13:34:44,172 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 142 [2020-09-25 13:34:44,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:44,198 INFO L225 Difference]: With dead ends: 3131 [2020-09-25 13:34:44,198 INFO L226 Difference]: Without dead ends: 2254 [2020-09-25 13:34:44,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2020-09-25 13:34:44,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2254 states. [2020-09-25 13:34:44,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2254 to 1709. [2020-09-25 13:34:44,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1709 states. [2020-09-25 13:34:44,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 2134 transitions. [2020-09-25 13:34:44,297 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 2134 transitions. Word has length 142 [2020-09-25 13:34:44,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:44,302 INFO L479 AbstractCegarLoop]: Abstraction has 1709 states and 2134 transitions. [2020-09-25 13:34:44,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 13:34:44,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 2134 transitions. [2020-09-25 13:34:44,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 13:34:44,311 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:44,311 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:34:44,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:34:44,311 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:44,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:44,315 INFO L82 PathProgramCache]: Analyzing trace with hash 99423878, now seen corresponding path program 1 times [2020-09-25 13:34:44,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:44,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1750716101] [2020-09-25 13:34:44,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:44,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:44,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:44,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:46,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:46,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:47,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:47,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:48,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:48,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-09-25 13:34:48,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:34:48,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4126 [2020-09-25 13:34:48,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:48,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:48,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:34:48,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 13:34:48,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 13:34:48,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:34:48,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:48,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:48,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:48,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:48,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:48,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:48,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:34:48,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:48,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:48,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:34:48,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:48,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:34:48,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:48,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:48,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:48,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:48,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:34:48,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:48,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-25 13:34:48,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:48,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:48,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:34:48,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:48,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 13:34:48,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:48,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 13:34:48,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:48,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:48,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:49,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:49,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 13:34:49,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:34:49,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-09-25 13:34:49,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:49,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:49,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:34:49,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:49,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 13:34:49,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:49,216 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 106 proven. 33 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 13:34:49,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1750716101] [2020-09-25 13:34:49,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:49,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:34:49,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621388681] [2020-09-25 13:34:49,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:34:49,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:49,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:34:49,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:34:49,223 INFO L87 Difference]: Start difference. First operand 1709 states and 2134 transitions. Second operand 7 states. [2020-09-25 13:34:52,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:52,235 INFO L93 Difference]: Finished difference Result 5002 states and 6552 transitions. [2020-09-25 13:34:52,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 13:34:52,236 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 212 [2020-09-25 13:34:52,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:52,255 INFO L225 Difference]: With dead ends: 5002 [2020-09-25 13:34:52,255 INFO L226 Difference]: Without dead ends: 3308 [2020-09-25 13:34:52,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:34:52,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3308 states. [2020-09-25 13:34:52,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3308 to 3102. [2020-09-25 13:34:52,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3102 states. [2020-09-25 13:34:52,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3102 states to 3102 states and 3967 transitions. [2020-09-25 13:34:52,369 INFO L78 Accepts]: Start accepts. Automaton has 3102 states and 3967 transitions. Word has length 212 [2020-09-25 13:34:52,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:52,370 INFO L479 AbstractCegarLoop]: Abstraction has 3102 states and 3967 transitions. [2020-09-25 13:34:52,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:34:52,370 INFO L276 IsEmpty]: Start isEmpty. Operand 3102 states and 3967 transitions. [2020-09-25 13:34:52,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-09-25 13:34:52,384 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:52,384 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:34:52,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:34:52,385 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:52,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:52,385 INFO L82 PathProgramCache]: Analyzing trace with hash -596487218, now seen corresponding path program 1 times [2020-09-25 13:34:52,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:52,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917778265] [2020-09-25 13:34:52,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:52,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:52,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:52,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:53,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:54,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:54,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:54,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:56,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:57,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:57,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-09-25 13:34:57,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:34:57,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 13:34:57,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:57,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:57,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:34:57,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:34:57,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-09-25 13:34:57,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:57,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:57,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:57,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:57,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:57,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:57,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:57,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 13:34:57,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:57,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:57,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:34:57,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:57,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:34:57,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:57,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:57,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:57,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:57,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:57,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:57,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 13:34:57,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:34:57,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-09-25 13:34:57,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:57,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:57,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:34:57,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:57,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 13:34:57,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:57,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-25 13:34:57,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:57,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:58,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:58,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:58,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:34:58,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:34:58,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 431 [2020-09-25 13:34:58,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:58,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:58,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:34:58,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:58,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 13:34:58,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:58,556 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 84 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-25 13:34:58,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917778265] [2020-09-25 13:34:58,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:58,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 13:34:58,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96332467] [2020-09-25 13:34:58,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:34:58,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:58,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:34:58,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:34:58,560 INFO L87 Difference]: Start difference. First operand 3102 states and 3967 transitions. Second operand 11 states. [2020-09-25 13:35:04,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:04,113 INFO L93 Difference]: Finished difference Result 8799 states and 11662 transitions. [2020-09-25 13:35:04,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 13:35:04,115 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 228 [2020-09-25 13:35:04,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:04,144 INFO L225 Difference]: With dead ends: 8799 [2020-09-25 13:35:04,144 INFO L226 Difference]: Without dead ends: 5828 [2020-09-25 13:35:04,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=165, Unknown=0, NotChecked=0, Total=272 [2020-09-25 13:35:04,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5828 states. [2020-09-25 13:35:04,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5828 to 5405. [2020-09-25 13:35:04,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5405 states. [2020-09-25 13:35:04,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5405 states to 5405 states and 6855 transitions. [2020-09-25 13:35:04,317 INFO L78 Accepts]: Start accepts. Automaton has 5405 states and 6855 transitions. Word has length 228 [2020-09-25 13:35:04,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:04,318 INFO L479 AbstractCegarLoop]: Abstraction has 5405 states and 6855 transitions. [2020-09-25 13:35:04,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 13:35:04,318 INFO L276 IsEmpty]: Start isEmpty. Operand 5405 states and 6855 transitions. [2020-09-25 13:35:04,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-09-25 13:35:04,328 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:04,329 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:35:04,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:35:04,329 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:04,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:04,330 INFO L82 PathProgramCache]: Analyzing trace with hash -2142390301, now seen corresponding path program 1 times [2020-09-25 13:35:04,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:04,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957491926] [2020-09-25 13:35:04,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:04,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:04,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:04,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:05,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:05,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:06,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:07,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:09,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:09,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-09-25 13:35:09,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:35:09,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 13:35:09,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:09,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:09,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:35:09,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 13:35:09,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-09-25 13:35:09,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:09,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:09,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:09,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:09,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:09,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:09,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:09,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:35:09,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:09,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:09,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:35:09,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:09,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:35:09,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:09,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:09,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:09,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:09,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:09,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 13:35:09,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:09,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 13:35:09,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:09,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:09,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:09,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:09,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 13:35:09,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:09,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-25 13:35:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:09,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:09,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:09,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 13:35:09,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:09,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-09-25 13:35:09,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:09,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:09,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:35:09,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:09,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-09-25 13:35:09,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:10,089 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:35:10,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957491926] [2020-09-25 13:35:10,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:35:10,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:35:10,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318905298] [2020-09-25 13:35:10,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:35:10,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:10,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:35:10,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:35:10,092 INFO L87 Difference]: Start difference. First operand 5405 states and 6855 transitions. Second operand 8 states.