/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --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_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:06:28,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:06:28,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:06:29,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:06:29,024 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:06:29,035 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:06:29,037 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:06:29,041 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:06:29,044 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:06:29,047 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:06:29,048 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:06:29,049 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:06:29,050 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:06:29,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:06:29,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:06:29,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:06:29,059 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:06:29,061 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:06:29,062 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:06:29,071 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:06:29,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:06:29,075 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:06:29,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:06:29,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:06:29,080 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:06:29,080 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:06:29,080 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:06:29,083 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:06:29,084 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:06:29,086 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:06:29,086 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:06:29,088 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:06:29,088 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:06:29,089 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:06:29,091 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:06:29,091 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:06:29,092 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:06:29,092 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:06:29,092 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:06:29,093 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:06:29,095 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:06:29,096 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 09:06:29,142 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:06:29,142 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:06:29,144 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:06:29,145 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:06:29,145 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:06:29,145 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:06:29,145 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:06:29,146 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:06:29,146 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:06:29,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:06:29,147 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:06:29,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:06:29,148 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:06:29,148 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:06:29,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:06:29,149 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:06:29,149 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:06:29,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:06:29,149 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:06:29,149 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:06:29,150 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:06:29,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:06:29,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:06:29,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:06:29,150 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:06:29,151 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:06:29,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:06:29,151 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:06:29,151 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:06:29,151 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 09:06:29,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:06:29,623 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:06:29,627 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:06:29,629 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:06:29,629 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:06:29,631 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label53.c [2020-09-25 09:06:29,709 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59acfb7e9/7a0d0d9ea522401694071948021511cb/FLAG9b1ab9f2b [2020-09-25 09:06:30,426 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:06:30,427 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label53.c [2020-09-25 09:06:30,440 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59acfb7e9/7a0d0d9ea522401694071948021511cb/FLAG9b1ab9f2b [2020-09-25 09:06:30,716 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59acfb7e9/7a0d0d9ea522401694071948021511cb [2020-09-25 09:06:30,730 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:06:30,735 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:06:30,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:06:30,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:06:30,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:06:30,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:06:30" (1/1) ... [2020-09-25 09:06:30,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dfcebea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:30, skipping insertion in model container [2020-09-25 09:06:30,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:06:30" (1/1) ... [2020-09-25 09:06:30,757 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:06:30,809 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:06:31,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:06:31,424 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:06:31,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:06:31,563 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:06:31,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:31 WrapperNode [2020-09-25 09:06:31,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:06:31,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:06:31,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:06:31,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:06:31,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:31" (1/1) ... [2020-09-25 09:06:31,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:31" (1/1) ... [2020-09-25 09:06:31,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:31" (1/1) ... [2020-09-25 09:06:31,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:31" (1/1) ... [2020-09-25 09:06:31,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:31" (1/1) ... [2020-09-25 09:06:31,659 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:31" (1/1) ... [2020-09-25 09:06:31,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:31" (1/1) ... [2020-09-25 09:06:31,676 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:06:31,677 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:06:31,677 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:06:31,677 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:06:31,678 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:31" (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 09:06:31,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:06:31,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:06:31,777 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:06:31,778 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:06:31,778 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:06:31,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:06:31,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:06:31,778 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:06:31,779 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:06:31,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:06:31,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:06:33,273 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:06:33,273 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:06:33,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:06:33 BoogieIcfgContainer [2020-09-25 09:06:33,282 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:06:33,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:06:33,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:06:33,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:06:33,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:06:30" (1/3) ... [2020-09-25 09:06:33,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7924266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:06:33, skipping insertion in model container [2020-09-25 09:06:33,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:31" (2/3) ... [2020-09-25 09:06:33,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7924266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:06:33, skipping insertion in model container [2020-09-25 09:06:33,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:06:33" (3/3) ... [2020-09-25 09:06:33,293 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label53.c [2020-09-25 09:06:33,305 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:06:33,316 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:06:33,336 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:06:33,371 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:06:33,371 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:06:33,372 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:06:33,372 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:06:33,372 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:06:33,372 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:06:33,372 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:06:33,372 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:06:33,402 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 09:06:33,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-25 09:06:33,413 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:33,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:06:33,415 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:33,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:33,423 INFO L82 PathProgramCache]: Analyzing trace with hash -193504545, now seen corresponding path program 1 times [2020-09-25 09:06:33,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:33,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507529445] [2020-09-25 09:06:33,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:33,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:33,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:33,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:33,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:35,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:35,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 09:06:35,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:06:35,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1418 [2020-09-25 09:06:35,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:35,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:35,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:06:35,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 09:06:35,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 09:06:35,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:06:35,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:35,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:35,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:35,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:35,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:35,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 09:06:35,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:35,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:35,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:35,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:35,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:06:35,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:35,212 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 09:06:35,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507529445] [2020-09-25 09:06:35,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:06:35,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:06:35,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654387391] [2020-09-25 09:06:35,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:06:35,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:35,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:06:35,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:06:35,245 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 09:06:37,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:37,326 INFO L93 Difference]: Finished difference Result 1160 states and 1585 transitions. [2020-09-25 09:06:37,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:06:37,328 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-09-25 09:06:37,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:37,353 INFO L225 Difference]: With dead ends: 1160 [2020-09-25 09:06:37,353 INFO L226 Difference]: Without dead ends: 631 [2020-09-25 09:06:37,364 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 09:06:37,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-09-25 09:06:37,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 576. [2020-09-25 09:06:37,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-25 09:06:37,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-25 09:06:37,468 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 61 [2020-09-25 09:06:37,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:37,469 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-25 09:06:37,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:06:37,469 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-25 09:06:37,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 09:06:37,478 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:37,479 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:37,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:06:37,479 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:37,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:37,480 INFO L82 PathProgramCache]: Analyzing trace with hash 75508103, now seen corresponding path program 1 times [2020-09-25 09:06:37,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:37,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350703593] [2020-09-25 09:06:37,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:37,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:37,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:37,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:37,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:38,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:38,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:38,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:42,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:42,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-25 09:06:42,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:06:42,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 09:06:42,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:42,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:42,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 09:06:42,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:06:42,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 09:06:42,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:42,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:42,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:42,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:42,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:42,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:42,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:42,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 09:06:42,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:42,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:42,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:06:42,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:42,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:06:42,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:42,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:42,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:42,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:43,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:43,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 09:06:43,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:06:43,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-09-25 09:06:43,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:43,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:43,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:43,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:43,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 09:06:43,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:43,130 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:06:43,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350703593] [2020-09-25 09:06:43,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:43,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 09:06:43,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078961009] [2020-09-25 09:06:43,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 09:06:43,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:43,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 09:06:43,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:06:43,137 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 12 states. [2020-09-25 09:06:46,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:46,091 INFO L93 Difference]: Finished difference Result 1521 states and 1944 transitions. [2020-09-25 09:06:46,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:06:46,091 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 144 [2020-09-25 09:06:46,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:46,102 INFO L225 Difference]: With dead ends: 1521 [2020-09-25 09:06:46,102 INFO L226 Difference]: Without dead ends: 884 [2020-09-25 09:06:46,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=130, Invalid=212, Unknown=0, NotChecked=0, Total=342 [2020-09-25 09:06:46,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2020-09-25 09:06:46,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 705. [2020-09-25 09:06:46,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 705 states. [2020-09-25 09:06:46,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 844 transitions. [2020-09-25 09:06:46,160 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 844 transitions. Word has length 144 [2020-09-25 09:06:46,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:46,163 INFO L479 AbstractCegarLoop]: Abstraction has 705 states and 844 transitions. [2020-09-25 09:06:46,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 09:06:46,163 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 844 transitions. [2020-09-25 09:06:46,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 09:06:46,175 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:46,175 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:46,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:06:46,176 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:46,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:46,176 INFO L82 PathProgramCache]: Analyzing trace with hash 2467362, now seen corresponding path program 1 times [2020-09-25 09:06:46,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:46,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097687021] [2020-09-25 09:06:46,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:46,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:46,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:46,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:46,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:47,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:47,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:47,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:47,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:48,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:49,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:49,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-25 09:06:49,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:06:49,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3426 [2020-09-25 09:06:49,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:49,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:49,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:06:49,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:06:49,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-25 09:06:49,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:49,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:49,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:49,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:49,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:49,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:49,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:49,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 09:06:49,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:49,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:49,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:49,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:49,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:06:49,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:49,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:49,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:49,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:49,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:49,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:49,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 09:06:49,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:06:49,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-09-25 09:06:49,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:49,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:49,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:49,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:06:49,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 09:06:49,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:50,000 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:06:50,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097687021] [2020-09-25 09:06:50,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:50,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:06:50,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379875760] [2020-09-25 09:06:50,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:06:50,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:50,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:06:50,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:06:50,003 INFO L87 Difference]: Start difference. First operand 705 states and 844 transitions. Second operand 6 states. [2020-09-25 09:06:51,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:51,878 INFO L93 Difference]: Finished difference Result 1899 states and 2381 transitions. [2020-09-25 09:06:51,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:06:51,880 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2020-09-25 09:06:51,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:51,894 INFO L225 Difference]: With dead ends: 1899 [2020-09-25 09:06:51,894 INFO L226 Difference]: Without dead ends: 1209 [2020-09-25 09:06:51,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:06:51,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2020-09-25 09:06:51,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1019. [2020-09-25 09:06:51,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1019 states. [2020-09-25 09:06:51,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1265 transitions. [2020-09-25 09:06:51,973 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1265 transitions. Word has length 144 [2020-09-25 09:06:51,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:51,975 INFO L479 AbstractCegarLoop]: Abstraction has 1019 states and 1265 transitions. [2020-09-25 09:06:51,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:06:51,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1265 transitions. [2020-09-25 09:06:51,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 09:06:51,978 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:51,978 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:51,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:06:51,979 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:51,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:51,979 INFO L82 PathProgramCache]: Analyzing trace with hash 118153746, now seen corresponding path program 1 times [2020-09-25 09:06:51,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:51,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551809220] [2020-09-25 09:06:51,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:52,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:52,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:52,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:52,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:53,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:53,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:53,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:55,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:55,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 09:06:55,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:06:55,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3678 [2020-09-25 09:06:55,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:55,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:55,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:06:55,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 09:06:55,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 09:06:55,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:55,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:55,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:55,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:55,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:55,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:55,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:55,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:06:55,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:55,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:55,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:06:55,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:55,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:06:55,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:55,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:55,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:55,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:55,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:55,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:06:55,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:55,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 09:06:55,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:55,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:55,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:06:55,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:55,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 09:06:55,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:56,018 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:06:56,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551809220] [2020-09-25 09:06:56,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:56,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:06:56,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898431804] [2020-09-25 09:06:56,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:06:56,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:56,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:06:56,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:06:56,021 INFO L87 Difference]: Start difference. First operand 1019 states and 1265 transitions. Second operand 6 states. [2020-09-25 09:06:58,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:58,804 INFO L93 Difference]: Finished difference Result 3178 states and 4159 transitions. [2020-09-25 09:06:58,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:06:58,808 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 150 [2020-09-25 09:06:58,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:58,825 INFO L225 Difference]: With dead ends: 3178 [2020-09-25 09:06:58,826 INFO L226 Difference]: Without dead ends: 2174 [2020-09-25 09:06:58,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:06:58,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2174 states. [2020-09-25 09:06:58,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2174 to 2109. [2020-09-25 09:06:58,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2109 states. [2020-09-25 09:06:58,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2109 states to 2109 states and 2754 transitions. [2020-09-25 09:06:58,915 INFO L78 Accepts]: Start accepts. Automaton has 2109 states and 2754 transitions. Word has length 150 [2020-09-25 09:06:58,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:58,915 INFO L479 AbstractCegarLoop]: Abstraction has 2109 states and 2754 transitions. [2020-09-25 09:06:58,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:06:58,916 INFO L276 IsEmpty]: Start isEmpty. Operand 2109 states and 2754 transitions. [2020-09-25 09:06:58,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-25 09:06:58,921 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:58,921 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:58,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:06:58,922 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:58,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:58,923 INFO L82 PathProgramCache]: Analyzing trace with hash -403760050, now seen corresponding path program 1 times [2020-09-25 09:06:58,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:58,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894454187] [2020-09-25 09:06:58,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:58,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:59,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:59,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:01,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:01,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:03,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:03,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 09:07:03,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:07:03,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 09:07:03,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:03,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:03,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:07:03,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:07:03,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-25 09:07:03,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:04,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:07:04,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:04,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:04,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:04,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:07:04,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:04,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 09:07:04,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:04,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:04,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:07:04,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:04,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:07:04,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:07:04,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:07:04,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:04,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:04,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:04,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:04,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 09:07:04,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:07:04,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 538 [2020-09-25 09:07:04,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:04,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:04,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:07:04,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:04,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 09:07:04,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:05,034 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:07:05,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894454187] [2020-09-25 09:07:05,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:07:05,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:07:05,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905241263] [2020-09-25 09:07:05,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:07:05,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:07:05,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:07:05,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:07:05,042 INFO L87 Difference]: Start difference. First operand 2109 states and 2754 transitions. Second operand 10 states. [2020-09-25 09:07:08,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:07:08,765 INFO L93 Difference]: Finished difference Result 5327 states and 7074 transitions. [2020-09-25 09:07:08,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 09:07:08,766 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 183 [2020-09-25 09:07:08,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:07:08,784 INFO L225 Difference]: With dead ends: 5327 [2020-09-25 09:07:08,785 INFO L226 Difference]: Without dead ends: 3204 [2020-09-25 09:07:08,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2020-09-25 09:07:08,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3204 states. [2020-09-25 09:07:08,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3204 to 3022. [2020-09-25 09:07:08,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3022 states. [2020-09-25 09:07:08,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3022 states to 3022 states and 3867 transitions. [2020-09-25 09:07:08,889 INFO L78 Accepts]: Start accepts. Automaton has 3022 states and 3867 transitions. Word has length 183 [2020-09-25 09:07:08,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:07:08,890 INFO L479 AbstractCegarLoop]: Abstraction has 3022 states and 3867 transitions. [2020-09-25 09:07:08,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:07:08,890 INFO L276 IsEmpty]: Start isEmpty. Operand 3022 states and 3867 transitions. [2020-09-25 09:07:08,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-09-25 09:07:08,895 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:07:08,895 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:07:08,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:07:08,896 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:07:08,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:07:08,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1006489137, now seen corresponding path program 1 times [2020-09-25 09:07:08,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:07:08,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [461275000] [2020-09-25 09:07:08,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:07:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:08,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:09,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:09,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:09,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:13,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:13,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-25 09:07:13,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:07:13,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 09:07:13,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:13,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:13,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:07:13,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:07:13,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-09-25 09:07:13,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:14,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:07:14,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:14,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:14,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:14,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:07:14,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:14,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 09:07:14,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:14,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:14,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:07:14,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:14,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:07:14,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:07:14,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:07:14,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:14,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:14,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:14,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:14,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-25 09:07:14,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:07:14,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 539 [2020-09-25 09:07:14,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:14,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:14,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:07:14,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:14,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 09:07:14,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:14,851 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:07:14,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [461275000] [2020-09-25 09:07:14,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:07:14,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:07:14,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806479770] [2020-09-25 09:07:14,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:07:14,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:07:14,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:07:14,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:07:14,855 INFO L87 Difference]: Start difference. First operand 3022 states and 3867 transitions. Second operand 10 states. [2020-09-25 09:07:17,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:07:17,009 INFO L93 Difference]: Finished difference Result 6071 states and 7825 transitions. [2020-09-25 09:07:17,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:07:17,010 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 188 [2020-09-25 09:07:17,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:07:17,025 INFO L225 Difference]: With dead ends: 6071 [2020-09-25 09:07:17,025 INFO L226 Difference]: Without dead ends: 3032 [2020-09-25 09:07:17,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-09-25 09:07:17,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3032 states. [2020-09-25 09:07:17,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3032 to 3018. [2020-09-25 09:07:17,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3018 states. [2020-09-25 09:07:17,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3018 states to 3018 states and 3847 transitions. [2020-09-25 09:07:17,132 INFO L78 Accepts]: Start accepts. Automaton has 3018 states and 3847 transitions. Word has length 188 [2020-09-25 09:07:17,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:07:17,133 INFO L479 AbstractCegarLoop]: Abstraction has 3018 states and 3847 transitions. [2020-09-25 09:07:17,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:07:17,133 INFO L276 IsEmpty]: Start isEmpty. Operand 3018 states and 3847 transitions. [2020-09-25 09:07:17,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-25 09:07:17,139 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:07:17,139 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:07:17,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 09:07:17,140 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:07:17,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:07:17,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1888990809, now seen corresponding path program 1 times [2020-09-25 09:07:17,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:07:17,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90903134] [2020-09-25 09:07:17,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:07:17,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:17,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:17,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:17,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:17,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:18,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:18,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking...