/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=0.1 --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_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:13:13,585 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:13:13,589 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:13:13,616 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:13:13,616 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:13:13,617 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:13:13,619 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:13:13,621 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:13:13,622 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:13:13,623 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:13:13,624 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:13:13,625 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:13:13,626 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:13:13,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:13:13,628 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:13:13,629 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:13:13,630 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:13:13,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:13:13,633 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:13:13,636 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:13:13,637 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:13:13,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:13:13,640 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:13:13,641 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:13:13,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:13:13,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:13:13,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:13:13,648 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:13:13,649 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:13:13,650 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:13:13,650 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:13:13,651 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:13:13,652 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:13:13,653 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:13:13,654 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:13:13,654 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:13:13,655 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:13:13,655 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:13:13,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:13:13,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:13:13,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:13:13,659 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 10:13:13,686 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:13:13,686 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:13:13,687 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:13:13,687 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:13:13,688 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:13:13,688 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:13:13,688 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:13:13,688 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:13:13,688 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:13:13,689 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:13:13,689 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:13:13,689 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:13:13,689 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:13:13,689 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:13:13,690 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:13:13,690 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:13:13,690 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:13:13,690 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:13:13,690 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:13:13,691 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:13:13,691 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:13:13,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:13:13,691 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:13:13,692 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:13:13,692 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:13:13,692 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:13:13,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:13:13,692 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:13:13,693 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:13:13,693 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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-09-25 10:13:14,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:13:14,162 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:13:14,166 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:13:14,168 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:13:14,168 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:13:14,170 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label21.c [2020-09-25 10:13:14,266 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/467d3d54b/b4bb1c6dd5df4c888711561236eb4411/FLAG3b5707d77 [2020-09-25 10:13:14,890 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:13:14,891 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label21.c [2020-09-25 10:13:14,906 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/467d3d54b/b4bb1c6dd5df4c888711561236eb4411/FLAG3b5707d77 [2020-09-25 10:13:15,134 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/467d3d54b/b4bb1c6dd5df4c888711561236eb4411 [2020-09-25 10:13:15,149 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:13:15,155 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:13:15,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:13:15,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:13:15,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:13:15,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:13:15" (1/1) ... [2020-09-25 10:13:15,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@394dfe3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:15, skipping insertion in model container [2020-09-25 10:13:15,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:13:15" (1/1) ... [2020-09-25 10:13:15,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:13:15,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:13:15,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:13:15,890 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:13:16,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:13:16,091 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:13:16,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:16 WrapperNode [2020-09-25 10:13:16,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:13:16,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:13:16,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:13:16,093 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:13:16,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:16" (1/1) ... [2020-09-25 10:13:16,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:16" (1/1) ... [2020-09-25 10:13:16,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:16" (1/1) ... [2020-09-25 10:13:16,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:16" (1/1) ... [2020-09-25 10:13:16,184 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:16" (1/1) ... [2020-09-25 10:13:16,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:16" (1/1) ... [2020-09-25 10:13:16,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:16" (1/1) ... [2020-09-25 10:13:16,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:13:16,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:13:16,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:13:16,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:13:16,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:16" (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 10:13:16,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:13:16,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:13:16,365 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:13:16,365 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:13:16,365 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:13:16,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:13:16,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:13:16,366 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:13:16,366 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:13:16,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:13:16,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:13:18,005 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:13:18,005 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:13:18,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:13:18 BoogieIcfgContainer [2020-09-25 10:13:18,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:13:18,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:13:18,017 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:13:18,020 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:13:18,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:13:15" (1/3) ... [2020-09-25 10:13:18,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@561e6727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:13:18, skipping insertion in model container [2020-09-25 10:13:18,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:13:16" (2/3) ... [2020-09-25 10:13:18,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@561e6727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:13:18, skipping insertion in model container [2020-09-25 10:13:18,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:13:18" (3/3) ... [2020-09-25 10:13:18,024 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label21.c [2020-09-25 10:13:18,036 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:13:18,048 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:13:18,071 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:13:18,105 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:13:18,105 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:13:18,105 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:13:18,105 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:13:18,106 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:13:18,106 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:13:18,106 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:13:18,106 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:13:18,144 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 10:13:18,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 10:13:18,155 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:18,156 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 10:13:18,157 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:18,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:18,166 INFO L82 PathProgramCache]: Analyzing trace with hash -2130690894, now seen corresponding path program 1 times [2020-09-25 10:13:18,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:18,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351183039] [2020-09-25 10:13:18,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:18,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:18,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:19,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:19,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 10:13:19,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:19,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 732 [2020-09-25 10:13:19,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:19,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:19,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:13:19,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 10:13:19,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 10:13:19,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:13:19,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:19,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:19,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:19,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:19,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:19,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:19,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 10:13:19,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:19,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:19,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:19,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:19,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:13:19,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:19,290 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 10:13:19,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351183039] [2020-09-25 10:13:19,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:13:19,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:13:19,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822839112] [2020-09-25 10:13:19,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:13:19,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:19,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:13:19,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:13:19,323 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 5 states. [2020-09-25 10:13:23,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:23,149 INFO L93 Difference]: Finished difference Result 1766 states and 2493 transitions. [2020-09-25 10:13:23,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:13:23,151 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 53 [2020-09-25 10:13:23,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:23,189 INFO L225 Difference]: With dead ends: 1766 [2020-09-25 10:13:23,189 INFO L226 Difference]: Without dead ends: 1025 [2020-09-25 10:13:23,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:13:23,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2020-09-25 10:13:23,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 995. [2020-09-25 10:13:23,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2020-09-25 10:13:23,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1343 transitions. [2020-09-25 10:13:23,330 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1343 transitions. Word has length 53 [2020-09-25 10:13:23,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:23,331 INFO L479 AbstractCegarLoop]: Abstraction has 995 states and 1343 transitions. [2020-09-25 10:13:23,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:13:23,332 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1343 transitions. [2020-09-25 10:13:23,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 10:13:23,341 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:23,341 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:13:23,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:13:23,344 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:23,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:23,344 INFO L82 PathProgramCache]: Analyzing trace with hash -815962305, now seen corresponding path program 1 times [2020-09-25 10:13:23,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:23,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147282900] [2020-09-25 10:13:23,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:23,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:23,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:23,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:24,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:24,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:26,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:26,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:28,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:28,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 10:13:28,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:13:28,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 10:13:28,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:28,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:28,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:13:28,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:13:28,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-25 10:13:28,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:28,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:28,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:28,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:28,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:28,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:28,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 10:13:28,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:28,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:28,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:28,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:28,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 10:13:28,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:13:28,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:28,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:28,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:28,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:28,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 10:13:28,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:28,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-09-25 10:13:28,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:28,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:28,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:13:28,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:28,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 10:13:28,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:28,878 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:13:28,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147282900] [2020-09-25 10:13:28,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:13:28,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 10:13:28,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293825543] [2020-09-25 10:13:28,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:13:28,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:28,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:13:28,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:13:28,884 INFO L87 Difference]: Start difference. First operand 995 states and 1343 transitions. Second operand 7 states. [2020-09-25 10:13:31,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:31,402 INFO L93 Difference]: Finished difference Result 2508 states and 3502 transitions. [2020-09-25 10:13:31,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:13:31,404 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 137 [2020-09-25 10:13:31,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:31,419 INFO L225 Difference]: With dead ends: 2508 [2020-09-25 10:13:31,419 INFO L226 Difference]: Without dead ends: 1528 [2020-09-25 10:13:31,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:13:31,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2020-09-25 10:13:31,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1088. [2020-09-25 10:13:31,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1088 states. [2020-09-25 10:13:31,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1088 states to 1088 states and 1361 transitions. [2020-09-25 10:13:31,504 INFO L78 Accepts]: Start accepts. Automaton has 1088 states and 1361 transitions. Word has length 137 [2020-09-25 10:13:31,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:31,507 INFO L479 AbstractCegarLoop]: Abstraction has 1088 states and 1361 transitions. [2020-09-25 10:13:31,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:13:31,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1088 states and 1361 transitions. [2020-09-25 10:13:31,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 10:13:31,517 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:31,518 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:13:31,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:13:31,518 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:31,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:31,518 INFO L82 PathProgramCache]: Analyzing trace with hash 244823419, now seen corresponding path program 1 times [2020-09-25 10:13:31,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:31,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793227822] [2020-09-25 10:13:31,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:31,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:31,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:31,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:31,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:31,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:33,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:33,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:36,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:36,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 10:13:36,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:13:36,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 10:13:36,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:36,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:36,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:13:36,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 10:13:36,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 10:13:36,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:36,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:36,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:36,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:36,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:36,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:36,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:36,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 10:13:36,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:36,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:36,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:36,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:36,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:13:36,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:36,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:36,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:36,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:36,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:36,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 10:13:36,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:36,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-25 10:13:36,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:36,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:36,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:13:36,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:36,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 10:13:36,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:37,016 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:13:37,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793227822] [2020-09-25 10:13:37,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:13:37,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 10:13:37,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280682225] [2020-09-25 10:13:37,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:13:37,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:37,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:13:37,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:13:37,019 INFO L87 Difference]: Start difference. First operand 1088 states and 1361 transitions. Second operand 7 states. [2020-09-25 10:13:39,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:39,851 INFO L93 Difference]: Finished difference Result 2595 states and 3327 transitions. [2020-09-25 10:13:39,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 10:13:39,852 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 147 [2020-09-25 10:13:39,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:39,861 INFO L225 Difference]: With dead ends: 2595 [2020-09-25 10:13:39,862 INFO L226 Difference]: Without dead ends: 1522 [2020-09-25 10:13:39,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:13:39,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2020-09-25 10:13:39,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 1476. [2020-09-25 10:13:39,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1476 states. [2020-09-25 10:13:39,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 1838 transitions. [2020-09-25 10:13:39,912 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 1838 transitions. Word has length 147 [2020-09-25 10:13:39,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:39,913 INFO L479 AbstractCegarLoop]: Abstraction has 1476 states and 1838 transitions. [2020-09-25 10:13:39,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:13:39,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 1838 transitions. [2020-09-25 10:13:39,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-25 10:13:39,918 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:39,918 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:13:39,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:13:39,919 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:39,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:39,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1708229479, now seen corresponding path program 1 times [2020-09-25 10:13:39,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:39,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493923858] [2020-09-25 10:13:39,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:39,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:40,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:40,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:40,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:40,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:41,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:41,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:42,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:42,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:43,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:43,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:45,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:45,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-09-25 10:13:45,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 10:13:45,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-09-25 10:13:45,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:45,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:45,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:13:45,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 10:13:45,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-09-25 10:13:45,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:45,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:45,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:45,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:45,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:45,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:45,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:45,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 10:13:45,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:45,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:45,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:45,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:45,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:13:45,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:45,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:45,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:45,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:45,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:45,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 10:13:45,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:45,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-25 10:13:45,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:45,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:45,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:13:45,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:45,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 10:13:45,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:45,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 10:13:45,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:45,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:45,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:45,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 10:13:45,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:45,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-25 10:13:45,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:45,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:45,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:13:45,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:45,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 10:13:45,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:45,630 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 150 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:13:45,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493923858] [2020-09-25 10:13:45,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:45,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:13:45,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597960750] [2020-09-25 10:13:45,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:13:45,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:45,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:13:45,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:13:45,633 INFO L87 Difference]: Start difference. First operand 1476 states and 1838 transitions. Second operand 8 states. [2020-09-25 10:13:50,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:50,365 INFO L93 Difference]: Finished difference Result 4138 states and 5308 transitions. [2020-09-25 10:13:50,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 10:13:50,368 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 230 [2020-09-25 10:13:50,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:50,382 INFO L225 Difference]: With dead ends: 4138 [2020-09-25 10:13:50,382 INFO L226 Difference]: Without dead ends: 2677 [2020-09-25 10:13:50,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-25 10:13:50,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2677 states. [2020-09-25 10:13:50,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2677 to 2412. [2020-09-25 10:13:50,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2412 states. [2020-09-25 10:13:50,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 2925 transitions. [2020-09-25 10:13:50,469 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 2925 transitions. Word has length 230 [2020-09-25 10:13:50,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:50,470 INFO L479 AbstractCegarLoop]: Abstraction has 2412 states and 2925 transitions. [2020-09-25 10:13:50,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:13:50,470 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 2925 transitions. [2020-09-25 10:13:50,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-09-25 10:13:50,478 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:50,478 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, 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] [2020-09-25 10:13:50,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:13:50,479 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:50,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:50,479 INFO L82 PathProgramCache]: Analyzing trace with hash 140547526, now seen corresponding path program 1 times [2020-09-25 10:13:50,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:50,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978795827] [2020-09-25 10:13:50,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:50,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:50,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:50,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:50,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:51,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:51,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:55,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:55,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 371 [2020-09-25 10:13:55,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:13:55,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-09-25 10:13:55,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:55,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:55,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:13:55,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 10:13:55,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 10:13:55,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:13:55,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:55,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:55,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:55,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:55,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:55,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:55,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 10:13:55,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:55,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:55,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:55,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:55,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:13:55,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:13:55,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:55,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:55,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:55,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-25 10:13:55,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:55,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-25 10:13:55,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:55,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:55,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:13:55,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:55,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 10:13:55,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:13:56,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-25 10:13:56,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:56,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:56,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:56,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 10:13:56,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:56,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 10:13:56,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:56,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:56,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:13:56,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-09-25 10:13:56,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:13:56,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:56,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-09-25 10:13:56,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:56,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:56,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:56,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-09-25 10:13:56,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:56,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 10:13:56,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:56,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:56,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:13:56,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 10:13:56,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:13:56,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:56,457 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 111 proven. 156 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-09-25 10:13:56,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978795827] [2020-09-25 10:13:56,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:56,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 10:13:56,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377545262] [2020-09-25 10:13:56,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:13:56,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:56,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:13:56,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:13:56,460 INFO L87 Difference]: Start difference. First operand 2412 states and 2925 transitions. Second operand 7 states. [2020-09-25 10:14:00,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:14:00,143 INFO L93 Difference]: Finished difference Result 5512 states and 6793 transitions. [2020-09-25 10:14:00,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:14:00,144 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 356 [2020-09-25 10:14:00,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:14:00,157 INFO L225 Difference]: With dead ends: 5512 [2020-09-25 10:14:00,158 INFO L226 Difference]: Without dead ends: 3115 [2020-09-25 10:14:00,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:14:00,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3115 states. [2020-09-25 10:14:00,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3115 to 2999. [2020-09-25 10:14:00,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2999 states. [2020-09-25 10:14:00,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2999 states to 2999 states and 3626 transitions. [2020-09-25 10:14:00,255 INFO L78 Accepts]: Start accepts. Automaton has 2999 states and 3626 transitions. Word has length 356 [2020-09-25 10:14:00,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:14:00,256 INFO L479 AbstractCegarLoop]: Abstraction has 2999 states and 3626 transitions. [2020-09-25 10:14:00,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:14:00,256 INFO L276 IsEmpty]: Start isEmpty. Operand 2999 states and 3626 transitions. [2020-09-25 10:14:00,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2020-09-25 10:14:00,264 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:14:00,265 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:14:00,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:14:00,265 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:14:00,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:14:00,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1456791593, now seen corresponding path program 1 times [2020-09-25 10:14:00,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:14:00,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965547737] [2020-09-25 10:14:00,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:14:00,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:14:00,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:14:00,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:14:00,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:14:01,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:14:01,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:14:01,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:14:02,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking...