/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:07:59,832 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:07:59,837 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:07:59,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:07:59,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:07:59,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:07:59,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:07:59,899 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:07:59,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:07:59,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:07:59,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:07:59,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:07:59,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:07:59,911 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:07:59,914 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:07:59,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:07:59,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:07:59,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:07:59,920 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:07:59,927 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:07:59,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:07:59,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:07:59,932 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:07:59,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:07:59,937 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:07:59,937 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:07:59,938 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:07:59,941 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:07:59,942 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:07:59,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:07:59,944 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:07:59,945 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:07:59,946 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:07:59,946 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:07:59,948 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:07:59,948 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:07:59,949 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:07:59,949 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:07:59,949 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:07:59,950 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:07:59,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:07:59,953 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 10:08:00,002 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:08:00,002 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:08:00,005 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:08:00,005 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:08:00,005 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:08:00,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:08:00,006 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:08:00,006 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:08:00,006 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:08:00,006 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:08:00,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:08:00,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:08:00,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:08:00,009 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:08:00,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:08:00,009 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:08:00,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:08:00,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:08:00,010 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:08:00,010 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:08:00,010 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:08:00,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:08:00,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:08:00,011 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:08:00,011 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:08:00,011 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:08:00,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:08:00,011 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:08:00,011 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:08:00,012 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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:08:00,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:08:00,442 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:08:00,447 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:08:00,449 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:08:00,449 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:08:00,450 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label02.c [2020-09-25 10:08:00,534 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8aaa5a02/013a74de8a864e568da25e9835f34281/FLAG9d721d0a9 [2020-09-25 10:08:01,201 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:08:01,202 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label02.c [2020-09-25 10:08:01,220 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8aaa5a02/013a74de8a864e568da25e9835f34281/FLAG9d721d0a9 [2020-09-25 10:08:01,390 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8aaa5a02/013a74de8a864e568da25e9835f34281 [2020-09-25 10:08:01,406 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:08:01,413 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:08:01,414 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:08:01,414 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:08:01,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:08:01,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:08:01" (1/1) ... [2020-09-25 10:08:01,426 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 10:08:01, skipping insertion in model container [2020-09-25 10:08:01,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:08:01" (1/1) ... [2020-09-25 10:08:01,434 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:08:01,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:08:01,954 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:08:01,960 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:08:02,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:08:02,200 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:08:02,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:02 WrapperNode [2020-09-25 10:08:02,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:08:02,202 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:08:02,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:08:02,202 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:08:02,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:02" (1/1) ... [2020-09-25 10:08:02,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:02" (1/1) ... [2020-09-25 10:08:02,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:02" (1/1) ... [2020-09-25 10:08:02,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:02" (1/1) ... [2020-09-25 10:08:02,281 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:02" (1/1) ... [2020-09-25 10:08:02,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:02" (1/1) ... [2020-09-25 10:08:02,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:02" (1/1) ... [2020-09-25 10:08:02,326 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:08:02,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:08:02,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:08:02,327 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:08:02,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:02" (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 10:08:02,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:08:02,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:08:02,397 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:08:02,397 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:08:02,397 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:08:02,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:08:02,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:08:02,397 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:08:02,397 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:08:02,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:08:02,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:08:03,861 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:08:03,861 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:08:03,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:08:03 BoogieIcfgContainer [2020-09-25 10:08:03,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:08:03,880 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:08:03,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:08:03,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:08:03,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:08:01" (1/3) ... [2020-09-25 10:08:03,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590b40ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:08:03, skipping insertion in model container [2020-09-25 10:08:03,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:02" (2/3) ... [2020-09-25 10:08:03,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590b40ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:08:03, skipping insertion in model container [2020-09-25 10:08:03,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:08:03" (3/3) ... [2020-09-25 10:08:03,889 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label02.c [2020-09-25 10:08:03,901 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:08:03,914 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:08:03,937 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:08:03,984 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:08:03,985 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:08:03,985 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:08:03,985 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:08:03,985 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:08:03,986 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:08:03,986 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:08:03,986 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:08:04,032 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 10:08:04,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-09-25 10:08:04,052 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:08:04,053 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] [2020-09-25 10:08:04,054 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:08:04,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:08:04,060 INFO L82 PathProgramCache]: Analyzing trace with hash -299401006, now seen corresponding path program 1 times [2020-09-25 10:08:04,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:08:04,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100677907] [2020-09-25 10:08:04,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:08:04,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:04,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:04,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:05,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:06,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:06,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:08,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:08,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:09,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:09,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 10:08:09,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:08:09,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 10:08:09,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:09,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:09,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:08:09,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:08:09,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 10:08:09,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:08:09,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:08:09,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:09,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:09,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:09,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:08:09,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:09,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 10:08:09,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:09,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:09,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:08:09,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:09,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 10:08:09,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:09,628 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 10:08:09,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100677907] [2020-09-25 10:08:09,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:08:09,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:08:09,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414163996] [2020-09-25 10:08:09,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:08:09,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:08:09,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:08:09,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:08:09,671 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 10:08:11,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:08:11,894 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 10:08:11,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:08:11,899 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2020-09-25 10:08:11,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:08:11,938 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 10:08:11,939 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 10:08:11,950 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 10:08:11,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 10:08:12,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 10:08:12,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 10:08:12,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 10:08:12,095 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 119 [2020-09-25 10:08:12,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:08:12,096 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 10:08:12,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:08:12,097 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 10:08:12,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 10:08:12,108 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:08:12,108 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 10:08:12,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:08:12,109 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:08:12,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:08:12,109 INFO L82 PathProgramCache]: Analyzing trace with hash -637954050, now seen corresponding path program 1 times [2020-09-25 10:08:12,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:08:12,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910822839] [2020-09-25 10:08:12,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:08:12,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:12,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:12,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:12,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:12,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:12,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:14,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:14,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:15,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:15,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:16,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:17,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:17,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 10:08:17,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 10:08:17,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 10:08:17,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:17,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:17,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:08:17,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:08:17,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 10:08:17,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:17,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:08:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:17,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:17,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:17,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:08:17,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:17,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 10:08:17,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:17,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:17,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:08:17,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:17,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:08:17,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 10:08:17,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:08:17,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:17,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:17,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:17,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:17,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:08:17,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:08:17,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 10:08:17,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:17,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:17,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:08:17,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:08:17,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 10:08:17,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:17,503 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:08:17,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910822839] [2020-09-25 10:08:17,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:08:17,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:08:17,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596866568] [2020-09-25 10:08:17,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:08:17,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:08:17,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:08:17,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:08:17,510 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 6 states. [2020-09-25 10:08:19,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:08:19,587 INFO L93 Difference]: Finished difference Result 1755 states and 2211 transitions. [2020-09-25 10:08:19,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:08:19,592 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2020-09-25 10:08:19,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:08:19,601 INFO L225 Difference]: With dead ends: 1755 [2020-09-25 10:08:19,602 INFO L226 Difference]: Without dead ends: 1044 [2020-09-25 10:08:19,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:08:19,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2020-09-25 10:08:19,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 881. [2020-09-25 10:08:19,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 881 states. [2020-09-25 10:08:19,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1094 transitions. [2020-09-25 10:08:19,650 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1094 transitions. Word has length 137 [2020-09-25 10:08:19,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:08:19,651 INFO L479 AbstractCegarLoop]: Abstraction has 881 states and 1094 transitions. [2020-09-25 10:08:19,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:08:19,651 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1094 transitions. [2020-09-25 10:08:19,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 10:08:19,660 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:08:19,661 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:08:19,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:08:19,661 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:08:19,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:08:19,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1018685367, now seen corresponding path program 1 times [2020-09-25 10:08:19,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:08:19,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377208037] [2020-09-25 10:08:19,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:08:19,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:19,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:19,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:20,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:20,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:20,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:20,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:23,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:23,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 10:08:23,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:08:23,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3791 [2020-09-25 10:08:23,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:23,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:23,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:08:23,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:08:23,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 10:08:23,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:23,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:08:23,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:23,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:23,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:23,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:08:23,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:23,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 10:08:23,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:23,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:23,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:08:23,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:23,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:08:23,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:23,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:08:23,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:23,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:23,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:23,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:23,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 10:08:23,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:08:23,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-25 10:08:23,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:23,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:23,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:08:23,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:23,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:08:23,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:24,234 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:08:24,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377208037] [2020-09-25 10:08:24,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:08:24,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:08:24,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409587895] [2020-09-25 10:08:24,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:08:24,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:08:24,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:08:24,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:08:24,239 INFO L87 Difference]: Start difference. First operand 881 states and 1094 transitions. Second operand 11 states. [2020-09-25 10:08:27,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:08:27,321 INFO L93 Difference]: Finished difference Result 1910 states and 2504 transitions. [2020-09-25 10:08:27,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 10:08:27,322 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 153 [2020-09-25 10:08:27,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:08:27,328 INFO L225 Difference]: With dead ends: 1910 [2020-09-25 10:08:27,328 INFO L226 Difference]: Without dead ends: 950 [2020-09-25 10:08:27,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-09-25 10:08:27,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2020-09-25 10:08:27,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 783. [2020-09-25 10:08:27,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 783 states. [2020-09-25 10:08:27,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 911 transitions. [2020-09-25 10:08:27,366 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 911 transitions. Word has length 153 [2020-09-25 10:08:27,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:08:27,367 INFO L479 AbstractCegarLoop]: Abstraction has 783 states and 911 transitions. [2020-09-25 10:08:27,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:08:27,368 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 911 transitions. [2020-09-25 10:08:27,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 10:08:27,372 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:08:27,373 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:08:27,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:08:27,373 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:08:27,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:08:27,374 INFO L82 PathProgramCache]: Analyzing trace with hash 278855818, now seen corresponding path program 1 times [2020-09-25 10:08:27,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:08:27,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700022205] [2020-09-25 10:08:27,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:08:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:27,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:27,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:27,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:29,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:29,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:30,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:30,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:32,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:32,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 10:08:32,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:08:32,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 10:08:32,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:32,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:32,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:08:32,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:08:32,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-09-25 10:08:32,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:08:32,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:08:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:32,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:32,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:32,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:08:32,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:32,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 10:08:32,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:32,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:32,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:08:32,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:32,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:08:32,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:32,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:08:32,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:32,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:32,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:32,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:32,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:08:32,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:08:32,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 10:08:32,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:32,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:32,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:08:32,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:32,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 10:08:32,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:08:32,962 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:08:32,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700022205] [2020-09-25 10:08:32,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:08:32,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:08:32,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234942956] [2020-09-25 10:08:32,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:08:32,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:08:32,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:08:32,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:08:32,966 INFO L87 Difference]: Start difference. First operand 783 states and 911 transitions. Second operand 11 states. [2020-09-25 10:08:35,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:08:35,175 INFO L93 Difference]: Finished difference Result 1200 states and 1338 transitions. [2020-09-25 10:08:35,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:08:35,176 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 157 [2020-09-25 10:08:35,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:08:35,181 INFO L225 Difference]: With dead ends: 1200 [2020-09-25 10:08:35,182 INFO L226 Difference]: Without dead ends: 775 [2020-09-25 10:08:35,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=119, Invalid=223, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:08:35,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2020-09-25 10:08:35,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 762. [2020-09-25 10:08:35,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2020-09-25 10:08:35,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 882 transitions. [2020-09-25 10:08:35,210 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 882 transitions. Word has length 157 [2020-09-25 10:08:35,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:08:35,211 INFO L479 AbstractCegarLoop]: Abstraction has 762 states and 882 transitions. [2020-09-25 10:08:35,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:08:35,211 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 882 transitions. [2020-09-25 10:08:35,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-25 10:08:35,215 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:08:35,215 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, 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] [2020-09-25 10:08:35,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:08:35,216 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:08:35,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:08:35,217 INFO L82 PathProgramCache]: Analyzing trace with hash -344439174, now seen corresponding path program 1 times [2020-09-25 10:08:35,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:08:35,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132527836] [2020-09-25 10:08:35,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:08:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:35,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:35,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:35,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:35,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:38,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:38,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:38,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:38,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:40,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:40,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-09-25 10:08:40,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:08:40,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 10:08:40,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:40,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:40,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:08:40,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:08:40,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-09-25 10:08:40,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:08:40,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:08:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:40,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:40,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:40,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:08:40,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:40,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 10:08:40,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:40,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:40,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:08:40,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:40,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:08:40,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:40,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:08:40,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:40,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:40,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:40,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:40,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 10:08:40,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:08:40,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-25 10:08:40,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:40,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:40,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:08:40,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:40,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 10:08:40,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:08:40,780 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:08:40,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132527836] [2020-09-25 10:08:40,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:08:40,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:08:40,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964139092] [2020-09-25 10:08:40,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:08:40,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:08:40,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:08:40,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:08:40,783 INFO L87 Difference]: Start difference. First operand 762 states and 882 transitions. Second operand 11 states. [2020-09-25 10:08:44,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:08:44,440 INFO L93 Difference]: Finished difference Result 2560 states and 3176 transitions. [2020-09-25 10:08:44,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 10:08:44,441 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 180 [2020-09-25 10:08:44,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:08:44,449 INFO L225 Difference]: With dead ends: 2560 [2020-09-25 10:08:44,449 INFO L226 Difference]: Without dead ends: 1398 [2020-09-25 10:08:44,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=135, Invalid=245, Unknown=0, NotChecked=0, Total=380 [2020-09-25 10:08:44,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1398 states. [2020-09-25 10:08:44,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1398 to 1371. [2020-09-25 10:08:44,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1371 states. [2020-09-25 10:08:44,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 1523 transitions. [2020-09-25 10:08:44,501 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 1523 transitions. Word has length 180 [2020-09-25 10:08:44,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:08:44,501 INFO L479 AbstractCegarLoop]: Abstraction has 1371 states and 1523 transitions. [2020-09-25 10:08:44,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:08:44,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 1523 transitions. [2020-09-25 10:08:44,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-25 10:08:44,510 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:08:44,511 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:08:44,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:08:44,512 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:08:44,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:08:44,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1577445626, now seen corresponding path program 1 times [2020-09-25 10:08:44,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:08:44,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673315355] [2020-09-25 10:08:44,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:08:44,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:44,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:44,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:44,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:46,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:47,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:48,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:49,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:49,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-09-25 10:08:49,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:08:49,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 10:08:49,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:49,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:49,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 10:08:49,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:08:49,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 211 [2020-09-25 10:08:49,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:08:49,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:08:49,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:49,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:49,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:49,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:08:49,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:49,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 10:08:49,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:49,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:49,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:08:49,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:49,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:08:49,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:08:49,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:08:49,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:49,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:49,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:49,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:08:49,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:49,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 10:08:49,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:49,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:49,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:08:49,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:08:49,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 10:08:49,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:08:49,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 10:08:49,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:49,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:49,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:50,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:50,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 10:08:50,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:08:50,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-09-25 10:08:50,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:50,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:50,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:08:50,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:08:50,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 10:08:50,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:08:50,349 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 7 proven. 86 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:08:50,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673315355] [2020-09-25 10:08:50,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:08:50,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 10:08:50,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660804472] [2020-09-25 10:08:50,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 10:08:50,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:08:50,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 10:08:50,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:08:50,352 INFO L87 Difference]: Start difference. First operand 1371 states and 1523 transitions. Second operand 14 states.