/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=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:40:04,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:40:04,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:40:04,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:40:04,324 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:40:04,336 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:40:04,338 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:40:04,342 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:40:04,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:40:04,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:40:04,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:40:04,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:40:04,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:40:04,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:40:04,358 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:40:04,360 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:40:04,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:40:04,363 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:40:04,365 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:40:04,375 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:40:04,377 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:40:04,378 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:40:04,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:40:04,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:40:04,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:40:04,384 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:40:04,384 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:40:04,387 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:40:04,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:40:04,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:40:04,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:40:04,391 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:40:04,392 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:40:04,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:40:04,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:40:04,394 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:40:04,395 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:40:04,395 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:40:04,396 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:40:04,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:40:04,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:40:04,399 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 05:40:04,446 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:40:04,446 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:40:04,449 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:40:04,449 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:40:04,449 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:40:04,450 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:40:04,450 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:40:04,450 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:40:04,450 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:40:04,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:40:04,452 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:40:04,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:40:04,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:40:04,453 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:40:04,453 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:40:04,453 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:40:04,453 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:40:04,454 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:40:04,454 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:40:04,454 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:40:04,454 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:40:04,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:40:04,455 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:40:04,455 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:40:04,455 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:40:04,455 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:40:04,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:40:04,456 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:40:04,456 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:40:04,456 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=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:40:04,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:40:04,955 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:40:04,961 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:40:04,963 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:40:04,964 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:40:04,965 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label30.c [2020-09-25 05:40:05,061 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d92b0b46/78c1a204ce614d038b3c5fca7485f853/FLAG46b1eff9f [2020-09-25 05:40:05,726 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:40:05,730 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label30.c [2020-09-25 05:40:05,752 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d92b0b46/78c1a204ce614d038b3c5fca7485f853/FLAG46b1eff9f [2020-09-25 05:40:05,956 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d92b0b46/78c1a204ce614d038b3c5fca7485f853 [2020-09-25 05:40:05,972 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:40:05,979 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:40:05,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:40:05,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:40:05,987 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:40:05,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:40:05" (1/1) ... [2020-09-25 05:40:05,994 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42dfe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:05, skipping insertion in model container [2020-09-25 05:40:05,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:40:05" (1/1) ... [2020-09-25 05:40:06,004 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:40:06,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:40:06,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:40:06,602 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:40:06,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:40:06,879 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:40:06,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:06 WrapperNode [2020-09-25 05:40:06,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:40:06,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:40:06,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:40:06,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:40:06,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:06" (1/1) ... [2020-09-25 05:40:06,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:06" (1/1) ... [2020-09-25 05:40:06,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:06" (1/1) ... [2020-09-25 05:40:06,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:06" (1/1) ... [2020-09-25 05:40:06,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:06" (1/1) ... [2020-09-25 05:40:06,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:06" (1/1) ... [2020-09-25 05:40:06,998 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:06" (1/1) ... [2020-09-25 05:40:07,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:40:07,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:40:07,014 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:40:07,014 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:40:07,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:06" (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 05:40:07,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:40:07,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:40:07,094 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:40:07,094 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:40:07,094 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:40:07,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:40:07,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:40:07,095 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:40:07,095 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:40:07,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:40:07,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:40:08,993 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:40:08,993 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:40:09,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:40:09 BoogieIcfgContainer [2020-09-25 05:40:09,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:40:09,005 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:40:09,005 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:40:09,009 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:40:09,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:40:05" (1/3) ... [2020-09-25 05:40:09,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cd1bcac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:40:09, skipping insertion in model container [2020-09-25 05:40:09,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:40:06" (2/3) ... [2020-09-25 05:40:09,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cd1bcac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:40:09, skipping insertion in model container [2020-09-25 05:40:09,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:40:09" (3/3) ... [2020-09-25 05:40:09,014 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label30.c [2020-09-25 05:40:09,027 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:40:09,038 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:40:09,062 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:40:09,098 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:40:09,099 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:40:09,099 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:40:09,099 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:40:09,099 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:40:09,099 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:40:09,099 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:40:09,100 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:40:09,135 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 05:40:09,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 05:40:09,146 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:09,148 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] [2020-09-25 05:40:09,148 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:09,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:09,156 INFO L82 PathProgramCache]: Analyzing trace with hash 2082104676, now seen corresponding path program 1 times [2020-09-25 05:40:09,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:09,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404446951] [2020-09-25 05:40:09,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:09,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:09,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:09,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:10,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:10,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 05:40:10,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:40:10,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 741 [2020-09-25 05:40:10,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:10,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:10,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:40:10,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 05:40:10,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 05:40:10,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:40:10,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:10,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:10,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:10,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:10,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:40:10,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:10,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 05:40:10,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:10,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:10,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:40:10,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:10,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:40:10,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:10,305 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 05:40:10,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404446951] [2020-09-25 05:40:10,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:40:10,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:40:10,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014415322] [2020-09-25 05:40:10,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:40:10,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:10,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:40:10,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:40:10,350 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 4 states. [2020-09-25 05:40:13,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:13,312 INFO L93 Difference]: Finished difference Result 1564 states and 2106 transitions. [2020-09-25 05:40:13,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:40:13,315 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-09-25 05:40:13,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:13,355 INFO L225 Difference]: With dead ends: 1564 [2020-09-25 05:40:13,355 INFO L226 Difference]: Without dead ends: 828 [2020-09-25 05:40:13,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:40:13,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-09-25 05:40:13,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 806. [2020-09-25 05:40:13,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-09-25 05:40:13,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 982 transitions. [2020-09-25 05:40:13,502 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 982 transitions. Word has length 62 [2020-09-25 05:40:13,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:13,503 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 982 transitions. [2020-09-25 05:40:13,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:40:13,503 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 982 transitions. [2020-09-25 05:40:13,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 05:40:13,512 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:13,513 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 05:40:13,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:40:13,513 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:13,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:13,514 INFO L82 PathProgramCache]: Analyzing trace with hash 824518871, now seen corresponding path program 1 times [2020-09-25 05:40:13,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:13,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300404144] [2020-09-25 05:40:13,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:13,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:13,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:13,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:14,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:14,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:15,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:16,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:18,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:18,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 05:40:18,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:40:18,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 05:40:18,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:18,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:18,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:40:18,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-09-25 05:40:18,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 05:40:18,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:40:18,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:18,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:18,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:18,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:18,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:40:18,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:18,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:40:18,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:18,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:18,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:18,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:18,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:18,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:40:18,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:40:18,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:18,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:18,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:18,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 05:40:18,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:18,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-25 05:40:18,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:18,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:18,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:40:18,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:18,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 05:40:18,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:18,971 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:40:18,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300404144] [2020-09-25 05:40:18,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:18,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:40:18,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097039912] [2020-09-25 05:40:18,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:40:18,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:18,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:40:18,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:40:18,976 INFO L87 Difference]: Start difference. First operand 806 states and 982 transitions. Second operand 6 states. [2020-09-25 05:40:23,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:23,210 INFO L93 Difference]: Finished difference Result 2481 states and 3217 transitions. [2020-09-25 05:40:23,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:40:23,211 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2020-09-25 05:40:23,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:23,224 INFO L225 Difference]: With dead ends: 2481 [2020-09-25 05:40:23,224 INFO L226 Difference]: Without dead ends: 1690 [2020-09-25 05:40:23,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:40:23,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1690 states. [2020-09-25 05:40:23,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1690 to 1651. [2020-09-25 05:40:23,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1651 states. [2020-09-25 05:40:23,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 2004 transitions. [2020-09-25 05:40:23,299 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 2004 transitions. Word has length 141 [2020-09-25 05:40:23,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:23,302 INFO L479 AbstractCegarLoop]: Abstraction has 1651 states and 2004 transitions. [2020-09-25 05:40:23,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:40:23,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 2004 transitions. [2020-09-25 05:40:23,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 05:40:23,312 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:23,312 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 05:40:23,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:40:23,313 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:23,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:23,313 INFO L82 PathProgramCache]: Analyzing trace with hash 223490446, now seen corresponding path program 1 times [2020-09-25 05:40:23,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:23,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689953875] [2020-09-25 05:40:23,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:23,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:23,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:23,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:23,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:23,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:24,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:26,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:26,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:26,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:26,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-25 05:40:26,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:40:26,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3264 [2020-09-25 05:40:26,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:26,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:26,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:40:26,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 05:40:26,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 05:40:26,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:26,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:26,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:26,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:26,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:26,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:40:26,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:26,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:40:26,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:26,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:26,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:26,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:26,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:26,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:26,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:40:26,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:26,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:26,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:26,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 05:40:26,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:26,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 05:40:26,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:26,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:26,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:40:26,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:26,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 05:40:26,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:40:26,945 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:40:26,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1689953875] [2020-09-25 05:40:26,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:26,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:40:26,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553868245] [2020-09-25 05:40:26,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:40:26,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:26,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:40:26,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:40:26,949 INFO L87 Difference]: Start difference. First operand 1651 states and 2004 transitions. Second operand 6 states. [2020-09-25 05:40:31,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:31,221 INFO L93 Difference]: Finished difference Result 4745 states and 6030 transitions. [2020-09-25 05:40:31,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:40:31,223 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2020-09-25 05:40:31,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:31,252 INFO L225 Difference]: With dead ends: 4745 [2020-09-25 05:40:31,252 INFO L226 Difference]: Without dead ends: 3109 [2020-09-25 05:40:31,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:40:31,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3109 states. [2020-09-25 05:40:31,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3109 to 3057. [2020-09-25 05:40:31,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3057 states. [2020-09-25 05:40:31,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3057 states to 3057 states and 3792 transitions. [2020-09-25 05:40:31,381 INFO L78 Accepts]: Start accepts. Automaton has 3057 states and 3792 transitions. Word has length 144 [2020-09-25 05:40:31,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:31,383 INFO L479 AbstractCegarLoop]: Abstraction has 3057 states and 3792 transitions. [2020-09-25 05:40:31,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:40:31,383 INFO L276 IsEmpty]: Start isEmpty. Operand 3057 states and 3792 transitions. [2020-09-25 05:40:31,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-25 05:40:31,386 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:31,386 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 05:40:31,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:40:31,387 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:31,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:31,387 INFO L82 PathProgramCache]: Analyzing trace with hash 32310375, now seen corresponding path program 1 times [2020-09-25 05:40:31,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:31,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [904374174] [2020-09-25 05:40:31,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:31,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:31,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:31,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:32,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:32,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:35,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:36,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:36,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 05:40:36,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:40:36,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 05:40:36,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:36,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:36,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:36,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-09-25 05:40:36,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 05:40:36,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:36,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:36,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:36,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:36,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:40:36,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:36,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:40:36,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:36,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:36,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:36,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:36,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:36,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:36,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:40:36,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:36,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:36,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:36,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 05:40:36,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:36,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 05:40:36,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:36,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:36,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:40:36,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:36,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 05:40:36,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:36,669 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:40:36,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [904374174] [2020-09-25 05:40:36,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:36,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:40:36,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424216972] [2020-09-25 05:40:36,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:40:36,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:36,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:40:36,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:40:36,677 INFO L87 Difference]: Start difference. First operand 3057 states and 3792 transitions. Second operand 5 states. [2020-09-25 05:40:39,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:39,485 INFO L93 Difference]: Finished difference Result 6383 states and 8218 transitions. [2020-09-25 05:40:39,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:40:39,485 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-09-25 05:40:39,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:39,505 INFO L225 Difference]: With dead ends: 6383 [2020-09-25 05:40:39,505 INFO L226 Difference]: Without dead ends: 3341 [2020-09-25 05:40:39,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:40:39,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3341 states. [2020-09-25 05:40:39,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3341 to 2168. [2020-09-25 05:40:39,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2168 states. [2020-09-25 05:40:39,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2168 states to 2168 states and 2736 transitions. [2020-09-25 05:40:39,598 INFO L78 Accepts]: Start accepts. Automaton has 2168 states and 2736 transitions. Word has length 145 [2020-09-25 05:40:39,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:39,599 INFO L479 AbstractCegarLoop]: Abstraction has 2168 states and 2736 transitions. [2020-09-25 05:40:39,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:40:39,599 INFO L276 IsEmpty]: Start isEmpty. Operand 2168 states and 2736 transitions. [2020-09-25 05:40:39,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-09-25 05:40:39,604 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:39,604 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:39,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:40:39,605 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:39,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:39,605 INFO L82 PathProgramCache]: Analyzing trace with hash 892447597, now seen corresponding path program 1 times [2020-09-25 05:40:39,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:39,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997484497] [2020-09-25 05:40:39,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:39,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:39,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:39,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:39,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:39,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:40,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:41,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:41,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:42,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:43,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:43,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:43,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:43,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:44,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:44,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-09-25 05:40:44,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 05:40:44,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 05:40:44,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:44,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:44,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:40:44,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-09-25 05:40:44,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 05:40:44,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:44,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:40:44,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:44,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:44,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:44,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:40:44,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:44,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:40:44,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:44,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:44,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:40:44,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:44,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:40:44,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:44,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:40:44,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:44,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:44,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:44,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 05:40:44,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:44,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 05:40:44,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:44,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:44,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:40:44,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:40:44,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 05:40:44,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:40:44,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 05:40:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:44,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:45,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:40:45,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 05:40:45,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:40:45,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-09-25 05:40:45,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:40:45,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:40:45,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:40:45,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:40:45,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 05:40:45,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:40:45,437 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:40:45,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997484497] [2020-09-25 05:40:45,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:40:45,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 05:40:45,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953848129] [2020-09-25 05:40:45,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 05:40:45,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:40:45,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 05:40:45,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:40:45,441 INFO L87 Difference]: Start difference. First operand 2168 states and 2736 transitions. Second operand 9 states. [2020-09-25 05:40:51,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:51,691 INFO L93 Difference]: Finished difference Result 5532 states and 7125 transitions. [2020-09-25 05:40:51,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 05:40:51,692 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 235 [2020-09-25 05:40:51,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:51,714 INFO L225 Difference]: With dead ends: 5532 [2020-09-25 05:40:51,715 INFO L226 Difference]: Without dead ends: 3168 [2020-09-25 05:40:51,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-09-25 05:40:51,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3168 states. [2020-09-25 05:40:51,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3168 to 2989. [2020-09-25 05:40:51,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2989 states. [2020-09-25 05:40:51,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2989 states to 2989 states and 3720 transitions. [2020-09-25 05:40:51,828 INFO L78 Accepts]: Start accepts. Automaton has 2989 states and 3720 transitions. Word has length 235 [2020-09-25 05:40:51,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:51,829 INFO L479 AbstractCegarLoop]: Abstraction has 2989 states and 3720 transitions. [2020-09-25 05:40:51,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 05:40:51,829 INFO L276 IsEmpty]: Start isEmpty. Operand 2989 states and 3720 transitions. [2020-09-25 05:40:51,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-09-25 05:40:51,834 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:51,834 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:51,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:40:51,835 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:51,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:51,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1490592228, now seen corresponding path program 1 times [2020-09-25 05:40:51,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:51,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802134564] [2020-09-25 05:40:51,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:51,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:51,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:51,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:52,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:52,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:52,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:52,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking...