/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=0.6 --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/Problem01_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:42:56,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:42:56,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:42:56,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:42:56,899 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:42:56,900 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:42:56,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:42:56,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:42:56,905 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:42:56,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:42:56,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:42:56,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:42:56,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:42:56,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:42:56,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:42:56,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:42:56,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:42:56,914 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:42:56,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:42:56,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:42:56,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:42:56,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:42:56,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:42:56,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:42:56,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:42:56,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:42:56,926 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:42:56,927 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:42:56,928 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:42:56,929 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:42:56,929 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:42:56,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:42:56,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:42:56,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:42:56,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:42:56,933 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:42:56,934 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:42:56,934 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:42:56,934 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:42:56,935 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:42:56,936 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:42:56,937 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 06:42:56,967 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:42:56,968 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:42:56,969 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:42:56,969 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:42:56,970 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:42:56,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:42:56,970 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:42:56,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:42:56,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:42:56,971 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:42:56,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:42:56,975 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:42:56,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:42:56,976 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:42:56,976 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:42:56,976 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:42:56,976 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:42:56,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:42:56,978 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:42:56,978 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:42:56,978 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:42:56,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:42:56,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:42:56,981 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:42:56,981 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:42:56,981 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:42:56,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:42:56,982 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:42:56,982 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:42:56,982 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:42:57,473 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:42:57,494 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:42:57,499 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:42:57,502 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:42:57,503 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:42:57,505 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label46.c [2020-09-25 06:42:57,599 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef52c9702/9d0e1dc061654fd392b764a2ad6bcaae/FLAGa9989f041 [2020-09-25 06:42:58,267 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:42:58,271 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label46.c [2020-09-25 06:42:58,297 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef52c9702/9d0e1dc061654fd392b764a2ad6bcaae/FLAGa9989f041 [2020-09-25 06:42:58,505 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef52c9702/9d0e1dc061654fd392b764a2ad6bcaae [2020-09-25 06:42:58,521 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:42:58,528 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:42:58,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:42:58,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:42:58,534 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:42:58,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:42:58" (1/1) ... [2020-09-25 06:42:58,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ab12f38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:58, skipping insertion in model container [2020-09-25 06:42:58,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:42:58" (1/1) ... [2020-09-25 06:42:58,549 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:42:58,612 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:42:59,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:42:59,134 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:42:59,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:42:59,388 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:42:59,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:59 WrapperNode [2020-09-25 06:42:59,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:42:59,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:42:59,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:42:59,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:42:59,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:59" (1/1) ... [2020-09-25 06:42:59,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:59" (1/1) ... [2020-09-25 06:42:59,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:59" (1/1) ... [2020-09-25 06:42:59,438 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:59" (1/1) ... [2020-09-25 06:42:59,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:59" (1/1) ... [2020-09-25 06:42:59,496 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:59" (1/1) ... [2020-09-25 06:42:59,500 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:59" (1/1) ... [2020-09-25 06:42:59,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:42:59,508 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:42:59,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:42:59,509 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:42:59,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:59" (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 06:42:59,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:42:59,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:42:59,594 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:42:59,594 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:42:59,594 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:42:59,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:42:59,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:42:59,595 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:42:59,595 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:42:59,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:42:59,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:43:01,123 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:43:01,124 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:43:01,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:43:01 BoogieIcfgContainer [2020-09-25 06:43:01,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:43:01,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:43:01,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:43:01,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:43:01,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:42:58" (1/3) ... [2020-09-25 06:43:01,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@428e29e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:43:01, skipping insertion in model container [2020-09-25 06:43:01,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:42:59" (2/3) ... [2020-09-25 06:43:01,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@428e29e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:43:01, skipping insertion in model container [2020-09-25 06:43:01,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:43:01" (3/3) ... [2020-09-25 06:43:01,157 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label46.c [2020-09-25 06:43:01,170 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:43:01,188 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:43:01,213 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:43:01,260 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:43:01,261 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:43:01,261 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:43:01,262 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:43:01,262 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:43:01,262 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:43:01,262 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:43:01,262 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:43:01,307 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 06:43:01,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 06:43:01,347 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:01,349 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] [2020-09-25 06:43:01,350 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:01,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:01,359 INFO L82 PathProgramCache]: Analyzing trace with hash -2063330177, now seen corresponding path program 1 times [2020-09-25 06:43:01,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:01,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462278962] [2020-09-25 06:43:01,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:01,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:01,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:02,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:02,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:03,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:06,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:06,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:06,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-09-25 06:43:06,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:43:06,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5150 [2020-09-25 06:43:06,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:06,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:06,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:43:06,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 06:43:06,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 06:43:06,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:43:07,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:07,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:07,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:07,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:07,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:07,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 06:43:07,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:07,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:07,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:07,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:07,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 06:43:07,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:07,205 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 06:43:07,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462278962] [2020-09-25 06:43:07,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:43:07,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:43:07,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102388404] [2020-09-25 06:43:07,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:43:07,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:07,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:43:07,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:43:07,239 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 06:43:09,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:09,534 INFO L93 Difference]: Finished difference Result 1270 states and 1669 transitions. [2020-09-25 06:43:09,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:43:09,536 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2020-09-25 06:43:09,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:09,575 INFO L225 Difference]: With dead ends: 1270 [2020-09-25 06:43:09,575 INFO L226 Difference]: Without dead ends: 696 [2020-09-25 06:43:09,588 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 [2020-09-25 06:43:09,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-25 06:43:09,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 603. [2020-09-25 06:43:09,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 06:43:09,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 731 transitions. [2020-09-25 06:43:09,754 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 731 transitions. Word has length 140 [2020-09-25 06:43:09,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:09,758 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 731 transitions. [2020-09-25 06:43:09,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:43:09,759 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 731 transitions. [2020-09-25 06:43:09,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 06:43:09,765 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:09,769 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 06:43:09,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:43:09,769 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:09,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:09,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1805238925, now seen corresponding path program 1 times [2020-09-25 06:43:09,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:09,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968596928] [2020-09-25 06:43:09,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:09,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:09,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:09,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:09,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:10,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:10,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:11,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:12,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:14,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:14,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:14,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 06:43:14,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:43:14,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 06:43:14,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:14,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:14,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:43:14,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 06:43:14,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 06:43:14,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:43:14,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:14,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:14,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:14,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:14,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:14,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 06:43:14,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:14,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:14,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:14,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:14,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 06:43:14,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:15,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:15,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:15,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:15,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:15,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:43:15,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:15,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 06:43:15,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:15,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:15,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:15,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:43:15,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 06:43:15,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:15,201 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:43:15,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968596928] [2020-09-25 06:43:15,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:43:15,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:43:15,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996585536] [2020-09-25 06:43:15,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:43:15,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:15,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:43:15,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:43:15,209 INFO L87 Difference]: Start difference. First operand 603 states and 731 transitions. Second operand 7 states. [2020-09-25 06:43:17,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:17,642 INFO L93 Difference]: Finished difference Result 1618 states and 2023 transitions. [2020-09-25 06:43:17,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 06:43:17,644 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 162 [2020-09-25 06:43:17,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:17,650 INFO L225 Difference]: With dead ends: 1618 [2020-09-25 06:43:17,650 INFO L226 Difference]: Without dead ends: 1039 [2020-09-25 06:43:17,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:43:17,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-09-25 06:43:17,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 954. [2020-09-25 06:43:17,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 954 states. [2020-09-25 06:43:17,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1183 transitions. [2020-09-25 06:43:17,713 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1183 transitions. Word has length 162 [2020-09-25 06:43:17,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:17,716 INFO L479 AbstractCegarLoop]: Abstraction has 954 states and 1183 transitions. [2020-09-25 06:43:17,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:43:17,716 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1183 transitions. [2020-09-25 06:43:17,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 06:43:17,722 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:17,722 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 06:43:17,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:43:17,723 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:17,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:17,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1181282038, now seen corresponding path program 1 times [2020-09-25 06:43:17,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:17,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638903851] [2020-09-25 06:43:17,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:17,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:17,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:18,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:18,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:18,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:18,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:19,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:21,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:21,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:22,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:22,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 06:43:22,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 06:43:22,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-09-25 06:43:22,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:22,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:22,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:22,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 06:43:22,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 06:43:22,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:43:22,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:23,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:23,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:23,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:23,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:23,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:23,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:43:23,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:23,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:23,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:23,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:23,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:23,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:23,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:23,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:23,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:23,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:23,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:43:23,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:23,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 06:43:23,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:23,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:23,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:23,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:23,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:43:23,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:23,138 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:43:23,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638903851] [2020-09-25 06:43:23,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:43:23,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 06:43:23,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820450544] [2020-09-25 06:43:23,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:43:23,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:23,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:43:23,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:43:23,141 INFO L87 Difference]: Start difference. First operand 954 states and 1183 transitions. Second operand 6 states. [2020-09-25 06:43:25,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:25,590 INFO L93 Difference]: Finished difference Result 2779 states and 3633 transitions. [2020-09-25 06:43:25,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:43:25,590 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 169 [2020-09-25 06:43:25,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:25,606 INFO L225 Difference]: With dead ends: 2779 [2020-09-25 06:43:25,606 INFO L226 Difference]: Without dead ends: 1849 [2020-09-25 06:43:25,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:43:25,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states. [2020-09-25 06:43:25,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 1669. [2020-09-25 06:43:25,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1669 states. [2020-09-25 06:43:25,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1669 states to 1669 states and 2155 transitions. [2020-09-25 06:43:25,701 INFO L78 Accepts]: Start accepts. Automaton has 1669 states and 2155 transitions. Word has length 169 [2020-09-25 06:43:25,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:25,702 INFO L479 AbstractCegarLoop]: Abstraction has 1669 states and 2155 transitions. [2020-09-25 06:43:25,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:43:25,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1669 states and 2155 transitions. [2020-09-25 06:43:25,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-09-25 06:43:25,712 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:25,712 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:25,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:43:25,712 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:25,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:25,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1796474422, now seen corresponding path program 1 times [2020-09-25 06:43:25,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:25,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600599520] [2020-09-25 06:43:25,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:25,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:25,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:25,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:26,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:28,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:28,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:28,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:30,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:30,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-09-25 06:43:30,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:43:30,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 06:43:30,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:30,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:30,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:30,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 06:43:30,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 06:43:30,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:43:30,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:30,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:30,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:30,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:30,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:30,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:30,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:43:30,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:30,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:30,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:30,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:30,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:30,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:30,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:30,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:30,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:30,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:30,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 06:43:30,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:30,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 06:43:30,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:30,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:30,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:30,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:30,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:43:30,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:30,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 06:43:30,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:30,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:31,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:31,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 06:43:31,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:31,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 06:43:31,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:31,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:31,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:31,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:43:31,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 06:43:31,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:31,070 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:43:31,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600599520] [2020-09-25 06:43:31,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:43:31,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:43:31,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083576956] [2020-09-25 06:43:31,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:43:31,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:31,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:43:31,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:43:31,075 INFO L87 Difference]: Start difference. First operand 1669 states and 2155 transitions. Second operand 7 states. [2020-09-25 06:43:33,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:33,273 INFO L93 Difference]: Finished difference Result 3587 states and 4721 transitions. [2020-09-25 06:43:33,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:43:33,274 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 194 [2020-09-25 06:43:33,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:33,300 INFO L225 Difference]: With dead ends: 3587 [2020-09-25 06:43:33,301 INFO L226 Difference]: Without dead ends: 1942 [2020-09-25 06:43:33,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:43:33,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1942 states. [2020-09-25 06:43:33,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1942 to 1710. [2020-09-25 06:43:33,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1710 states. [2020-09-25 06:43:33,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1710 states to 1710 states and 2202 transitions. [2020-09-25 06:43:33,402 INFO L78 Accepts]: Start accepts. Automaton has 1710 states and 2202 transitions. Word has length 194 [2020-09-25 06:43:33,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:33,402 INFO L479 AbstractCegarLoop]: Abstraction has 1710 states and 2202 transitions. [2020-09-25 06:43:33,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:43:33,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1710 states and 2202 transitions. [2020-09-25 06:43:33,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-25 06:43:33,412 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:33,413 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:33,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:43:33,413 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:33,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:33,414 INFO L82 PathProgramCache]: Analyzing trace with hash 382333289, now seen corresponding path program 1 times [2020-09-25 06:43:33,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:33,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1755681267] [2020-09-25 06:43:33,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:33,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:33,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:33,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:33,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:34,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:35,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:35,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:35,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:35,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:36,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:36,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:38,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:38,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 06:43:38,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 06:43:38,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 06:43:38,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:38,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:38,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:43:38,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 06:43:38,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 06:43:38,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:38,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:38,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:38,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:38,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:38,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:38,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:38,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:43:38,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:38,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:38,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:38,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:38,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:38,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:38,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:38,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:38,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:38,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:38,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 06:43:38,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:38,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 06:43:38,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:38,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:38,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:43:38,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:38,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:43:38,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:43:38,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 06:43:38,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:38,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:38,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:38,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 06:43:38,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:38,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 06:43:38,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:38,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:38,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:38,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:43:38,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 06:43:38,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:43:38,788 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:43:38,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1755681267] [2020-09-25 06:43:38,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:43:38,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:43:38,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121288815] [2020-09-25 06:43:38,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:43:38,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:38,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:43:38,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:43:38,791 INFO L87 Difference]: Start difference. First operand 1710 states and 2202 transitions. Second operand 8 states. [2020-09-25 06:43:42,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:43:42,107 INFO L93 Difference]: Finished difference Result 5177 states and 7008 transitions. [2020-09-25 06:43:42,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 06:43:42,107 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 201 [2020-09-25 06:43:42,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:43:42,129 INFO L225 Difference]: With dead ends: 5177 [2020-09-25 06:43:42,130 INFO L226 Difference]: Without dead ends: 3491 [2020-09-25 06:43:42,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-09-25 06:43:42,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3491 states. [2020-09-25 06:43:42,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3491 to 2778. [2020-09-25 06:43:42,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2778 states. [2020-09-25 06:43:42,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2778 states to 2778 states and 3582 transitions. [2020-09-25 06:43:42,249 INFO L78 Accepts]: Start accepts. Automaton has 2778 states and 3582 transitions. Word has length 201 [2020-09-25 06:43:42,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:43:42,249 INFO L479 AbstractCegarLoop]: Abstraction has 2778 states and 3582 transitions. [2020-09-25 06:43:42,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:43:42,250 INFO L276 IsEmpty]: Start isEmpty. Operand 2778 states and 3582 transitions. [2020-09-25 06:43:42,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-09-25 06:43:42,265 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:43:42,266 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-25 06:43:42,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:43:42,266 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:43:42,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:43:42,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1856671123, now seen corresponding path program 1 times [2020-09-25 06:43:42,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:43:42,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020820956] [2020-09-25 06:43:42,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:43:42,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:42,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:42,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:42,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:42,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:42,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:42,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:42,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:43,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:43,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:43,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:44,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:47,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:47,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-09-25 06:43:47,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 06:43:47,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-25 06:43:47,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:47,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:47,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:43:47,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 06:43:47,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 06:43:47,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:47,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:43:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:47,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:47,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:47,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 06:43:47,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:47,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:43:47,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:47,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:47,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:43:47,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:47,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:43:47,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:43:47,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 06:43:47,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:47,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:47,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:47,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 06:43:47,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:47,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 06:43:47,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:47,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:47,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:43:47,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:47,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:43:47,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:43:47,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 06:43:47,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:47,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:47,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:47,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:47,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:43:47,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:43:47,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 06:43:47,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:47,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:47,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:43:47,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:43:47,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 06:43:47,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:47,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-25 06:43:47,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:43:47,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:43:47,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:43:47,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 06:43:47,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:43:47,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 06:43:47,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:43:47,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:43:47,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:43:47,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:43:47,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 06:43:47,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:43:47,875 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 126 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 06:43:47,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020820956] [2020-09-25 06:43:47,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:43:47,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:43:47,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908682200] [2020-09-25 06:43:47,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:43:47,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:43:47,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:43:47,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:43:47,877 INFO L87 Difference]: Start difference. First operand 2778 states and 3582 transitions. Second operand 8 states.