/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=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:21:25,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:21:25,851 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:21:25,882 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:21:25,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:21:25,883 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:21:25,885 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:21:25,887 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:21:25,889 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:21:25,890 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:21:25,891 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:21:25,893 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:21:25,893 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:21:25,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:21:25,896 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:21:25,897 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:21:25,898 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:21:25,899 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:21:25,901 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:21:25,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:21:25,905 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:21:25,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:21:25,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:21:25,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:21:25,911 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:21:25,912 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:21:25,912 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:21:25,913 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:21:25,913 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:21:25,914 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:21:25,915 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:21:25,916 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:21:25,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:21:25,918 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:21:25,919 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:21:25,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:21:25,920 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:21:25,920 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:21:25,920 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:21:25,921 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:21:25,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:21:25,923 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 18:21:25,951 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:21:25,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:21:25,952 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:21:25,953 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:21:25,953 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:21:25,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:21:25,953 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:21:25,954 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:21:25,954 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:21:25,954 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:21:25,954 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:21:25,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:21:25,955 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:21:25,955 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:21:25,955 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:21:25,955 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:21:25,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:21:25,956 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:21:25,956 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:21:25,956 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:21:25,956 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:21:25,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:21:25,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:21:25,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:21:25,957 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:21:25,957 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:21:25,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:21:25,958 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:21:25,958 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:21:25,958 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=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 18:21:26,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:21:26,455 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:21:26,461 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:21:26,463 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:21:26,466 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:21:26,467 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label10.c [2020-09-24 18:21:26,551 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c3fb73257/071ffa19bd334723912f8a39f48c48d3/FLAGa80c4bb1e [2020-09-24 18:21:27,214 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:21:27,215 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label10.c [2020-09-24 18:21:27,229 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c3fb73257/071ffa19bd334723912f8a39f48c48d3/FLAGa80c4bb1e [2020-09-24 18:21:27,440 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c3fb73257/071ffa19bd334723912f8a39f48c48d3 [2020-09-24 18:21:27,456 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:21:27,462 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:21:27,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:21:27,464 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:21:27,468 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:21:27,469 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:21:27" (1/1) ... [2020-09-24 18:21:27,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@763ad0aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:27, skipping insertion in model container [2020-09-24 18:21:27,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:21:27" (1/1) ... [2020-09-24 18:21:27,483 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:21:27,537 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:21:28,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:21:28,124 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:21:28,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:21:28,287 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:21:28,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:28 WrapperNode [2020-09-24 18:21:28,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:21:28,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:21:28,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:21:28,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:21:28,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:28" (1/1) ... [2020-09-24 18:21:28,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:28" (1/1) ... [2020-09-24 18:21:28,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:28" (1/1) ... [2020-09-24 18:21:28,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:28" (1/1) ... [2020-09-24 18:21:28,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:28" (1/1) ... [2020-09-24 18:21:28,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:28" (1/1) ... [2020-09-24 18:21:28,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:28" (1/1) ... [2020-09-24 18:21:28,413 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:21:28,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:21:28,414 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:21:28,414 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:21:28,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:21:28,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:21:28,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:21:28,524 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:21:28,524 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:21:28,524 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:21:28,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:21:28,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:21:28,525 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:21:28,525 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:21:28,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:21:28,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:21:29,906 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:21:29,907 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:21:29,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:21:29 BoogieIcfgContainer [2020-09-24 18:21:29,916 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:21:29,918 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:21:29,918 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:21:29,922 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:21:29,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:21:27" (1/3) ... [2020-09-24 18:21:29,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b6fae65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:21:29, skipping insertion in model container [2020-09-24 18:21:29,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:28" (2/3) ... [2020-09-24 18:21:29,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b6fae65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:21:29, skipping insertion in model container [2020-09-24 18:21:29,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:21:29" (3/3) ... [2020-09-24 18:21:29,927 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label10.c [2020-09-24 18:21:29,939 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:21:29,951 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:21:29,974 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:21:30,014 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:21:30,014 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:21:30,014 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:21:30,015 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:21:30,015 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:21:30,015 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:21:30,015 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:21:30,015 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:21:30,050 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 18:21:30,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-24 18:21:30,076 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:30,078 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:21:30,079 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:30,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:30,088 INFO L82 PathProgramCache]: Analyzing trace with hash 2114164186, now seen corresponding path program 1 times [2020-09-24 18:21:30,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:30,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143623590] [2020-09-24 18:21:30,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:30,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:30,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:30,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:31,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:31,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:31,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:32,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:33,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:33,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:34,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:35,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:35,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-24 18:21:35,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:21:35,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-24 18:21:35,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:35,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:21:35,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:21:35,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-09-24 18:21:35,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:21:35,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:35,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:35,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:35,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:35,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:35,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:35,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 18:21:35,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:35,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:35,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:35,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 18:21:35,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:21:35,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:21:35,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143623590] [2020-09-24 18:21:35,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:21:35,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:21:35,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782491342] [2020-09-24 18:21:35,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:21:35,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:35,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:21:35,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:21:35,896 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-24 18:21:38,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:38,083 INFO L93 Difference]: Finished difference Result 1206 states and 1652 transitions. [2020-09-24 18:21:38,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:21:38,086 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2020-09-24 18:21:38,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:38,112 INFO L225 Difference]: With dead ends: 1206 [2020-09-24 18:21:38,112 INFO L226 Difference]: Without dead ends: 628 [2020-09-24 18:21:38,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:21:38,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-09-24 18:21:38,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 615. [2020-09-24 18:21:38,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-09-24 18:21:38,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 751 transitions. [2020-09-24 18:21:38,233 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 751 transitions. Word has length 161 [2020-09-24 18:21:38,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:38,234 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 751 transitions. [2020-09-24 18:21:38,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:21:38,234 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 751 transitions. [2020-09-24 18:21:38,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-24 18:21:38,249 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:38,250 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:21:38,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:21:38,251 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:38,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:38,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1103327617, now seen corresponding path program 1 times [2020-09-24 18:21:38,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:38,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85586840] [2020-09-24 18:21:38,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:38,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:38,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:38,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:38,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:38,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:43,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:43,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-24 18:21:43,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:21:43,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-24 18:21:43,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:43,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:21:43,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:21:43,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 18:21:43,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:43,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:43,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:43,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:43,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:43,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:43,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:43,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 18:21:43,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:43,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:43,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:43,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:21:43,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:43,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:21:43,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:43,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:43,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:43,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 18:21:43,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:43,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-24 18:21:43,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:43,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:43,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:21:43,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:21:43,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:43,650 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:21:43,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85586840] [2020-09-24 18:21:43,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:21:43,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 18:21:43,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079841241] [2020-09-24 18:21:43,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:21:43,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:43,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:21:43,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:21:43,658 INFO L87 Difference]: Start difference. First operand 615 states and 751 transitions. Second operand 7 states. [2020-09-24 18:21:45,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:45,798 INFO L93 Difference]: Finished difference Result 1580 states and 2002 transitions. [2020-09-24 18:21:45,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:21:45,803 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 195 [2020-09-24 18:21:45,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:45,820 INFO L225 Difference]: With dead ends: 1580 [2020-09-24 18:21:45,821 INFO L226 Difference]: Without dead ends: 987 [2020-09-24 18:21:45,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:21:45,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2020-09-24 18:21:45,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 931. [2020-09-24 18:21:45,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 931 states. [2020-09-24 18:21:45,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1103 transitions. [2020-09-24 18:21:45,881 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1103 transitions. Word has length 195 [2020-09-24 18:21:45,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:45,882 INFO L479 AbstractCegarLoop]: Abstraction has 931 states and 1103 transitions. [2020-09-24 18:21:45,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:21:45,882 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1103 transitions. [2020-09-24 18:21:45,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-24 18:21:45,891 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:45,891 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:21:45,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:21:45,892 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:45,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:45,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1436833023, now seen corresponding path program 1 times [2020-09-24 18:21:45,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:45,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569484742] [2020-09-24 18:21:45,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:45,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:46,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:46,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:46,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:47,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:49,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:49,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:50,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:50,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-09-24 18:21:50,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:21:50,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 18:21:50,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:50,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:21:50,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 18:21:50,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 18:21:50,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:51,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:51,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:51,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:51,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:51,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:51,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:51,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 18:21:51,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:51,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:51,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:51,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 18:21:51,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:51,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:21:51,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:51,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:51,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:51,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 18:21:51,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:51,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-24 18:21:51,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:51,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:51,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:21:51,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 18:21:51,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:51,267 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:21:51,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569484742] [2020-09-24 18:21:51,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:21:51,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 18:21:51,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500689642] [2020-09-24 18:21:51,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:21:51,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:51,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:21:51,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:21:51,273 INFO L87 Difference]: Start difference. First operand 931 states and 1103 transitions. Second operand 7 states. [2020-09-24 18:21:53,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:53,700 INFO L93 Difference]: Finished difference Result 2401 states and 3042 transitions. [2020-09-24 18:21:53,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:21:53,701 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 196 [2020-09-24 18:21:53,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:53,717 INFO L225 Difference]: With dead ends: 2401 [2020-09-24 18:21:53,718 INFO L226 Difference]: Without dead ends: 1492 [2020-09-24 18:21:53,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:21:53,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2020-09-24 18:21:53,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1409. [2020-09-24 18:21:53,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1409 states. [2020-09-24 18:21:53,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1409 states to 1409 states and 1711 transitions. [2020-09-24 18:21:53,813 INFO L78 Accepts]: Start accepts. Automaton has 1409 states and 1711 transitions. Word has length 196 [2020-09-24 18:21:53,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:53,815 INFO L479 AbstractCegarLoop]: Abstraction has 1409 states and 1711 transitions. [2020-09-24 18:21:53,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:21:53,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1409 states and 1711 transitions. [2020-09-24 18:21:53,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-24 18:21:53,830 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:53,830 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:21:53,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:21:53,830 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:53,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:53,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1580541990, now seen corresponding path program 1 times [2020-09-24 18:21:53,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:53,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147221645] [2020-09-24 18:21:53,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:53,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:53,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:53,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:54,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:54,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:55,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:58,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:58,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:58,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-09-24 18:21:58,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:21:58,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 18:21:58,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:58,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:58,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-24 18:21:58,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 18:21:58,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:58,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:58,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:58,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:58,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:58,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:58,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:58,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 18:21:58,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:58,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:58,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:58,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:58,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:59,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:21:59,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:59,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:59,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:59,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:21:59,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:59,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 18:21:59,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:59,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:59,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:59,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 18:21:59,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:59,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 18:21:59,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:59,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:59,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:59,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 18:21:59,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:59,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-24 18:21:59,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:59,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:59,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:21:59,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:21:59,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:59,195 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:21:59,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147221645] [2020-09-24 18:21:59,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:59,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:21:59,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119649217] [2020-09-24 18:21:59,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:21:59,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:59,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:21:59,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:21:59,203 INFO L87 Difference]: Start difference. First operand 1409 states and 1711 transitions. Second operand 7 states. [2020-09-24 18:22:01,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:22:01,509 INFO L93 Difference]: Finished difference Result 3461 states and 4412 transitions. [2020-09-24 18:22:01,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:22:01,510 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 212 [2020-09-24 18:22:01,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:22:01,518 INFO L225 Difference]: With dead ends: 3461 [2020-09-24 18:22:01,519 INFO L226 Difference]: Without dead ends: 1697 [2020-09-24 18:22:01,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:22:01,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2020-09-24 18:22:01,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1668. [2020-09-24 18:22:01,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1668 states. [2020-09-24 18:22:01,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 1948 transitions. [2020-09-24 18:22:01,580 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 1948 transitions. Word has length 212 [2020-09-24 18:22:01,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:22:01,580 INFO L479 AbstractCegarLoop]: Abstraction has 1668 states and 1948 transitions. [2020-09-24 18:22:01,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:22:01,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 1948 transitions. [2020-09-24 18:22:01,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-09-24 18:22:01,590 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:01,591 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 18:22:01,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:22:01,591 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:01,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:01,592 INFO L82 PathProgramCache]: Analyzing trace with hash 235288895, now seen corresponding path program 1 times [2020-09-24 18:22:01,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:01,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [208128597] [2020-09-24 18:22:01,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:01,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:01,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:02,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:02,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:06,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:06,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:06,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-09-24 18:22:06,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:22:06,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 18:22:06,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:06,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:06,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 130 [2020-09-24 18:22:06,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-09-24 18:22:06,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:06,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:22:06,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:06,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:06,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:06,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:06,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:06,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:22:06,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:06,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:22:06,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:06,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:22:06,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:06,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:22:06,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:06,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:06,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:06,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:22:06,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:06,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:22:06,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:06,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:22:06,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:06,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:22:06,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:06,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 18:22:06,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:06,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:06,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:06,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 18:22:06,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:06,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-24 18:22:06,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:06,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:22:06,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:06,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-24 18:22:06,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:22:07,054 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 90 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-24 18:22:07,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [208128597] [2020-09-24 18:22:07,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:22:07,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:22:07,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064049528] [2020-09-24 18:22:07,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:22:07,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:22:07,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:22:07,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:22:07,056 INFO L87 Difference]: Start difference. First operand 1668 states and 1948 transitions. Second operand 5 states. [2020-09-24 18:22:08,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:22:08,958 INFO L93 Difference]: Finished difference Result 4304 states and 5181 transitions. [2020-09-24 18:22:08,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:22:08,959 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 267 [2020-09-24 18:22:08,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:22:08,972 INFO L225 Difference]: With dead ends: 4304 [2020-09-24 18:22:08,973 INFO L226 Difference]: Without dead ends: 2481 [2020-09-24 18:22:08,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:22:08,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2481 states. [2020-09-24 18:22:09,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2481 to 2411. [2020-09-24 18:22:09,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2411 states. [2020-09-24 18:22:09,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2411 states to 2411 states and 2839 transitions. [2020-09-24 18:22:09,052 INFO L78 Accepts]: Start accepts. Automaton has 2411 states and 2839 transitions. Word has length 267 [2020-09-24 18:22:09,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:22:09,053 INFO L479 AbstractCegarLoop]: Abstraction has 2411 states and 2839 transitions. [2020-09-24 18:22:09,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:22:09,053 INFO L276 IsEmpty]: Start isEmpty. Operand 2411 states and 2839 transitions. [2020-09-24 18:22:09,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-09-24 18:22:09,067 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:09,067 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:22:09,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:22:09,068 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:09,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:09,068 INFO L82 PathProgramCache]: Analyzing trace with hash 360346265, now seen corresponding path program 1 times [2020-09-24 18:22:09,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:09,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749137994] [2020-09-24 18:22:09,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:09,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:09,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:09,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:09,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:10,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:10,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:14,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:14,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 350 [2020-09-24 18:22:14,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:22:14,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-09-24 18:22:14,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:14,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:14,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-24 18:22:14,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 18:22:14,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:22:14,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:22:14,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:14,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:14,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:14,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:14,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:14,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:22:14,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:14,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:22:14,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:14,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:22:14,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:22:14,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:22:14,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:14,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:14,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:14,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 18:22:14,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:14,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 18:22:14,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:14,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:22:14,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:14,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:22:14,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:22:14,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 18:22:14,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:14,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:14,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:14,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 18:22:14,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:14,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-24 18:22:14,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:14,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:22:14,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:14,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 18:22:14,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:14,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-24 18:22:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:14,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:14,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:14,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 18:22:14,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:14,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-24 18:22:14,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:14,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:14,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:22:14,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 18:22:14,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:22:14,916 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 244 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-09-24 18:22:14,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749137994] [2020-09-24 18:22:14,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:22:14,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:22:14,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084477813] [2020-09-24 18:22:14,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:22:14,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:22:14,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:22:14,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:22:14,921 INFO L87 Difference]: Start difference. First operand 2411 states and 2839 transitions. Second operand 7 states. [2020-09-24 18:22:16,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:22:16,573 INFO L93 Difference]: Finished difference Result 4088 states and 4726 transitions. [2020-09-24 18:22:16,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:22:16,573 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 335 [2020-09-24 18:22:16,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:22:16,574 INFO L225 Difference]: With dead ends: 4088 [2020-09-24 18:22:16,574 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 18:22:16,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:22:16,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 18:22:16,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 18:22:16,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 18:22:16,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 18:22:16,585 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 335 [2020-09-24 18:22:16,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:22:16,585 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 18:22:16,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:22:16,585 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 18:22:16,585 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 18:22:16,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:22:16,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.