/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:59:54,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:59:54,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:59:54,941 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:59:54,941 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:59:54,943 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:59:54,944 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:59:54,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:59:54,949 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:59:54,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:59:54,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:59:54,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:59:54,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:59:54,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:59:54,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:59:54,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:59:54,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:59:54,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:59:54,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:59:54,963 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:59:54,965 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:59:54,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:59:54,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:59:54,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:59:54,971 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:59:54,971 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:59:54,971 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:59:54,973 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:59:54,973 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:59:54,975 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:59:54,975 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:59:54,976 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:59:54,977 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:59:54,978 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:59:54,979 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:59:54,980 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:59:54,981 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:59:54,981 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:59:54,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:59:54,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:59:54,983 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:59:54,984 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 08:59:55,020 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:59:55,020 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:59:55,022 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:59:55,022 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:59:55,022 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:59:55,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:59:55,022 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:59:55,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:59:55,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:59:55,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:59:55,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:59:55,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:59:55,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:59:55,024 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:59:55,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:59:55,024 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:59:55,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:59:55,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:59:55,025 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:59:55,025 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:59:55,025 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:59:55,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:59:55,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:59:55,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:59:55,026 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:59:55,026 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:59:55,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:59:55,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:59:55,027 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:59:55,027 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 08:59:55,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:59:55,543 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:59:55,550 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:59:55,552 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:59:55,553 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:59:55,555 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label08.c [2020-09-25 08:59:55,632 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62ce3175f/02083bc52bda4cf49f23c57c99f005af/FLAG1758ae815 [2020-09-25 08:59:56,223 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:59:56,227 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label08.c [2020-09-25 08:59:56,251 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62ce3175f/02083bc52bda4cf49f23c57c99f005af/FLAG1758ae815 [2020-09-25 08:59:56,464 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62ce3175f/02083bc52bda4cf49f23c57c99f005af [2020-09-25 08:59:56,480 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:59:56,487 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:59:56,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:59:56,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:59:56,492 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:59:56,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:59:56" (1/1) ... [2020-09-25 08:59:56,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d72532b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:56, skipping insertion in model container [2020-09-25 08:59:56,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:59:56" (1/1) ... [2020-09-25 08:59:56,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:59:56,566 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:59:57,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:59:57,067 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:59:57,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:59:57,277 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:59:57,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:57 WrapperNode [2020-09-25 08:59:57,278 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:59:57,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:59:57,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:59:57,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:59:57,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:57" (1/1) ... [2020-09-25 08:59:57,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:57" (1/1) ... [2020-09-25 08:59:57,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:57" (1/1) ... [2020-09-25 08:59:57,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:57" (1/1) ... [2020-09-25 08:59:57,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:57" (1/1) ... [2020-09-25 08:59:57,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:57" (1/1) ... [2020-09-25 08:59:57,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:57" (1/1) ... [2020-09-25 08:59:57,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:59:57,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:59:57,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:59:57,391 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:59:57,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:57" (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 08:59:57,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:59:57,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:59:57,490 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 08:59:57,490 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:59:57,491 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 08:59:57,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:59:57,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:59:57,493 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 08:59:57,493 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:59:57,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:59:57,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:59:58,880 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:59:58,880 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 08:59:58,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:59:58 BoogieIcfgContainer [2020-09-25 08:59:58,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:59:58,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:59:58,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:59:58,896 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:59:58,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:59:56" (1/3) ... [2020-09-25 08:59:58,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33478af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:59:58, skipping insertion in model container [2020-09-25 08:59:58,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:57" (2/3) ... [2020-09-25 08:59:58,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33478af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:59:58, skipping insertion in model container [2020-09-25 08:59:58,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:59:58" (3/3) ... [2020-09-25 08:59:58,901 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label08.c [2020-09-25 08:59:58,916 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:59:58,927 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:59:58,954 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:59:58,990 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:59:58,991 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:59:58,991 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:59:58,991 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:59:58,991 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:59:58,991 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:59:58,991 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:59:58,992 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:59:59,024 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 08:59:59,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 08:59:59,046 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:59,047 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:59,048 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:59,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:59,056 INFO L82 PathProgramCache]: Analyzing trace with hash 461278893, now seen corresponding path program 1 times [2020-09-25 08:59:59,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:59,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036488076] [2020-09-25 08:59:59,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:59,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:59,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:00,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:00,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:00,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:00,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:00,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:01,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:01,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:02,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:02,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:04,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:04,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 09:00:04,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 09:00:04,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 09:00:04,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:04,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:04,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:00:04,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 09:00:04,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 09:00:04,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:00:04,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:04,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:04,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:04,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:04,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:04,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 09:00:04,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:04,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:04,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:04,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:04,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 09:00:04,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:04,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:00:04,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036488076] [2020-09-25 09:00:04,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:00:04,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:00:04,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748075510] [2020-09-25 09:00:04,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:00:04,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:04,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:00:04,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:00:04,705 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 09:00:07,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:07,009 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 09:00:07,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:00:07,014 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2020-09-25 09:00:07,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:07,043 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 09:00:07,043 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 09:00:07,057 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 09:00:07,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 09:00:07,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 09:00:07,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 09:00:07,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 09:00:07,203 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 141 [2020-09-25 09:00:07,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:07,207 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 09:00:07,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:00:07,207 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 09:00:07,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 09:00:07,226 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:07,227 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:00:07,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:00:07,230 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:07,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:07,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1572128645, now seen corresponding path program 1 times [2020-09-25 09:00:07,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:07,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762717458] [2020-09-25 09:00:07,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:07,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:07,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:07,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:07,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:10,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:10,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:11,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:12,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:12,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 09:00:12,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:00:12,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 09:00:12,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:12,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:12,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:00:12,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 09:00:12,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 09:00:12,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:12,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:12,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:12,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:12,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:12,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:12,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:12,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 09:00:12,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:12,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:12,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:12,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:12,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:00:12,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:12,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:12,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:12,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:12,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:12,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:00:12,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:12,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 09:00:12,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:12,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:12,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:12,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:00:12,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:00:12,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:12,607 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:00:12,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762717458] [2020-09-25 09:00:12,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:00:12,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:00:12,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178227137] [2020-09-25 09:00:12,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:00:12,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:12,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:00:12,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:00:12,617 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 7 states. [2020-09-25 09:00:15,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:15,071 INFO L93 Difference]: Finished difference Result 1538 states and 1910 transitions. [2020-09-25 09:00:15,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 09:00:15,076 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 162 [2020-09-25 09:00:15,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:15,084 INFO L225 Difference]: With dead ends: 1538 [2020-09-25 09:00:15,084 INFO L226 Difference]: Without dead ends: 959 [2020-09-25 09:00:15,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:00:15,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2020-09-25 09:00:15,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 901. [2020-09-25 09:00:15,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2020-09-25 09:00:15,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1108 transitions. [2020-09-25 09:00:15,134 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1108 transitions. Word has length 162 [2020-09-25 09:00:15,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:15,135 INFO L479 AbstractCegarLoop]: Abstraction has 901 states and 1108 transitions. [2020-09-25 09:00:15,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:00:15,135 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1108 transitions. [2020-09-25 09:00:15,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 09:00:15,140 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:15,140 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, 1] [2020-09-25 09:00:15,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:00:15,140 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:15,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:15,141 INFO L82 PathProgramCache]: Analyzing trace with hash 127836767, now seen corresponding path program 1 times [2020-09-25 09:00:15,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:15,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539754194] [2020-09-25 09:00:15,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:15,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:15,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:15,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:15,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:15,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:16,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:17,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:19,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:20,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:20,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:20,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 09:00:20,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:00:20,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 09:00:20,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:20,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:20,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:00:20,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:00:20,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 09:00:20,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:20,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:20,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:20,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:20,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:20,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:20,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:20,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 09:00:20,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:20,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:20,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:20,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:20,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 09:00:20,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:20,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:20,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:20,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:20,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:20,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:00:20,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:20,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 09:00:20,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:20,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:20,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:20,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:00:20,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 09:00:20,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:00:20,474 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 09:00:20,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539754194] [2020-09-25 09:00:20,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:00:20,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 09:00:20,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269648386] [2020-09-25 09:00:20,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:00:20,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:20,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:00:20,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:00:20,478 INFO L87 Difference]: Start difference. First operand 901 states and 1108 transitions. Second operand 8 states. [2020-09-25 09:00:23,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:23,774 INFO L93 Difference]: Finished difference Result 2983 states and 3934 transitions. [2020-09-25 09:00:23,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:00:23,775 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 163 [2020-09-25 09:00:23,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:23,796 INFO L225 Difference]: With dead ends: 2983 [2020-09-25 09:00:23,796 INFO L226 Difference]: Without dead ends: 2106 [2020-09-25 09:00:23,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-25 09:00:23,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2020-09-25 09:00:23,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 1983. [2020-09-25 09:00:23,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1983 states. [2020-09-25 09:00:23,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1983 states to 1983 states and 2511 transitions. [2020-09-25 09:00:23,916 INFO L78 Accepts]: Start accepts. Automaton has 1983 states and 2511 transitions. Word has length 163 [2020-09-25 09:00:23,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:23,918 INFO L479 AbstractCegarLoop]: Abstraction has 1983 states and 2511 transitions. [2020-09-25 09:00:23,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:00:23,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1983 states and 2511 transitions. [2020-09-25 09:00:23,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 09:00:23,931 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:23,931 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:00:23,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:00:23,939 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:23,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:23,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1373458601, now seen corresponding path program 1 times [2020-09-25 09:00:23,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:23,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101956837] [2020-09-25 09:00:23,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:24,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:24,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:24,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:24,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:25,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:27,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:28,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:28,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:28,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 09:00:28,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:00:28,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 09:00:28,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:28,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:28,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:00:28,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-09-25 09:00:28,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 09:00:28,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:29,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:29,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:29,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:29,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:29,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:29,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 09:00:29,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:29,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:29,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:00:29,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:29,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:00:29,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:29,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:29,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:29,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:29,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:00:29,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:29,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 09:00:29,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:29,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:29,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:00:29,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:29,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:00:29,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:00:29,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 09:00:29,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:29,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:29,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:29,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:29,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:29,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 09:00:29,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:29,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:29,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:00:29,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:29,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 09:00:29,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:00:29,837 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 09:00:29,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101956837] [2020-09-25 09:00:29,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:00:29,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 09:00:29,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997750561] [2020-09-25 09:00:29,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 09:00:29,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:29,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 09:00:29,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-25 09:00:29,840 INFO L87 Difference]: Start difference. First operand 1983 states and 2511 transitions. Second operand 9 states. [2020-09-25 09:00:32,748 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2020-09-25 09:00:32,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:32,844 INFO L93 Difference]: Finished difference Result 4048 states and 5204 transitions. [2020-09-25 09:00:32,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:00:32,844 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 193 [2020-09-25 09:00:32,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:32,856 INFO L225 Difference]: With dead ends: 4048 [2020-09-25 09:00:32,856 INFO L226 Difference]: Without dead ends: 1988 [2020-09-25 09:00:32,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:00:32,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1988 states. [2020-09-25 09:00:32,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1988 to 1978. [2020-09-25 09:00:32,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1978 states. [2020-09-25 09:00:32,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1978 states to 1978 states and 2502 transitions. [2020-09-25 09:00:32,930 INFO L78 Accepts]: Start accepts. Automaton has 1978 states and 2502 transitions. Word has length 193 [2020-09-25 09:00:32,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:32,931 INFO L479 AbstractCegarLoop]: Abstraction has 1978 states and 2502 transitions. [2020-09-25 09:00:32,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 09:00:32,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1978 states and 2502 transitions. [2020-09-25 09:00:32,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-25 09:00:32,942 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:32,942 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, 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 09:00:32,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:00:32,942 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:32,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:32,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1171514507, now seen corresponding path program 1 times [2020-09-25 09:00:32,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:32,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583368270] [2020-09-25 09:00:32,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:32,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:33,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:33,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:33,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:33,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:37,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:37,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:37,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:37,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-09-25 09:00:37,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:00:37,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 09:00:37,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:37,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:37,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:00:37,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 09:00:37,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 09:00:37,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:00:38,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:38,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:38,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:38,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:38,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:38,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:38,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 09:00:38,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:38,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:38,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:38,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:38,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 09:00:38,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:38,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:38,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:38,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:38,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:38,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:38,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:00:38,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:00:38,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 09:00:38,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:38,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:38,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:38,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:00:38,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:00:38,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:38,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 09:00:38,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:38,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:38,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:38,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 09:00:38,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:38,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 09:00:38,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:38,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:38,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:38,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:00:38,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 09:00:38,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:00:38,398 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 41 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 09:00:38,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583368270] [2020-09-25 09:00:38,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:00:38,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:00:38,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684313963] [2020-09-25 09:00:38,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:00:38,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:38,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:00:38,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:00:38,400 INFO L87 Difference]: Start difference. First operand 1978 states and 2502 transitions. Second operand 8 states. [2020-09-25 09:00:40,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:40,649 INFO L93 Difference]: Finished difference Result 4372 states and 5687 transitions. [2020-09-25 09:00:40,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:00:40,651 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 199 [2020-09-25 09:00:40,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:40,666 INFO L225 Difference]: With dead ends: 4372 [2020-09-25 09:00:40,667 INFO L226 Difference]: Without dead ends: 2418 [2020-09-25 09:00:40,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-09-25 09:00:40,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2418 states. [2020-09-25 09:00:40,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2418 to 2160. [2020-09-25 09:00:40,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2160 states. [2020-09-25 09:00:40,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2160 states to 2160 states and 2689 transitions. [2020-09-25 09:00:40,761 INFO L78 Accepts]: Start accepts. Automaton has 2160 states and 2689 transitions. Word has length 199 [2020-09-25 09:00:40,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:40,761 INFO L479 AbstractCegarLoop]: Abstraction has 2160 states and 2689 transitions. [2020-09-25 09:00:40,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:00:40,761 INFO L276 IsEmpty]: Start isEmpty. Operand 2160 states and 2689 transitions. [2020-09-25 09:00:40,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-09-25 09:00:40,771 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:40,772 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, 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 09:00:40,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:00:40,772 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:40,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:40,773 INFO L82 PathProgramCache]: Analyzing trace with hash -227878836, now seen corresponding path program 1 times [2020-09-25 09:00:40,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:40,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180311442] [2020-09-25 09:00:40,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:40,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:40,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:40,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:41,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:41,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:42,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking...