/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_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:08:13,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:08:13,814 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:08:13,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:08:13,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:08:13,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:08:13,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:08:13,871 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:08:13,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:08:13,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:08:13,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:08:13,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:08:13,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:08:13,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:08:13,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:08:13,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:08:13,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:08:13,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:08:13,893 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:08:13,901 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:08:13,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:08:13,905 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:08:13,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:08:13,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:08:13,925 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:08:13,925 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:08:13,925 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:08:13,926 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:08:13,928 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:08:13,929 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:08:13,929 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:08:13,933 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:08:13,934 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:08:13,935 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:08:13,938 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:08:13,938 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:08:13,939 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:08:13,940 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:08:13,940 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:08:13,941 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:08:13,943 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:08:13,944 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 10:08:13,992 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:08:13,992 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:08:13,994 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:08:13,995 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:08:13,995 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:08:13,995 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:08:13,995 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:08:13,996 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:08:13,996 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:08:13,996 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:08:13,997 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:08:13,997 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:08:13,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:08:13,998 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:08:13,998 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:08:13,998 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:08:13,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:08:13,999 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:08:13,999 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:08:13,999 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:08:13,999 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:08:14,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:08:14,000 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:08:14,000 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:08:14,000 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:08:14,001 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:08:14,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:08:14,001 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:08:14,001 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:08:14,001 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 10:08:14,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:08:14,495 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:08:14,507 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:08:14,509 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:08:14,509 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:08:14,511 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label08.c [2020-09-25 10:08:14,619 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5843f7b04/9e6af7e4caf7484fb73ffd5d837653e5/FLAG898f45fe9 [2020-09-25 10:08:15,246 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:08:15,247 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label08.c [2020-09-25 10:08:15,262 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5843f7b04/9e6af7e4caf7484fb73ffd5d837653e5/FLAG898f45fe9 [2020-09-25 10:08:15,508 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5843f7b04/9e6af7e4caf7484fb73ffd5d837653e5 [2020-09-25 10:08:15,519 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:08:15,525 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:08:15,526 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:08:15,526 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:08:15,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:08:15,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:08:15" (1/1) ... [2020-09-25 10:08:15,537 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d0614b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:15, skipping insertion in model container [2020-09-25 10:08:15,537 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:08:15" (1/1) ... [2020-09-25 10:08:15,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:08:15,622 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:08:16,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:08:16,105 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:08:16,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:08:16,322 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:08:16,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:16 WrapperNode [2020-09-25 10:08:16,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:08:16,324 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:08:16,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:08:16,324 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:08:16,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:16" (1/1) ... [2020-09-25 10:08:16,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:16" (1/1) ... [2020-09-25 10:08:16,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:16" (1/1) ... [2020-09-25 10:08:16,366 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:16" (1/1) ... [2020-09-25 10:08:16,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:16" (1/1) ... [2020-09-25 10:08:16,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:16" (1/1) ... [2020-09-25 10:08:16,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:16" (1/1) ... [2020-09-25 10:08:16,437 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:08:16,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:08:16,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:08:16,438 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:08:16,439 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:16" (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 10:08:16,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:08:16,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:08:16,517 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:08:16,518 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:08:16,518 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:08:16,518 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:08:16,518 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:08:16,518 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:08:16,518 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:08:16,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:08:16,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:08:18,019 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:08:18,020 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:08:18,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:08:18 BoogieIcfgContainer [2020-09-25 10:08:18,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:08:18,032 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:08:18,032 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:08:18,036 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:08:18,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:08:15" (1/3) ... [2020-09-25 10:08:18,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e437f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:08:18, skipping insertion in model container [2020-09-25 10:08:18,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:16" (2/3) ... [2020-09-25 10:08:18,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e437f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:08:18, skipping insertion in model container [2020-09-25 10:08:18,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:08:18" (3/3) ... [2020-09-25 10:08:18,042 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label08.c [2020-09-25 10:08:18,057 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:08:18,070 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:08:18,097 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:08:18,137 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:08:18,137 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:08:18,137 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:08:18,137 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:08:18,138 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:08:18,138 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:08:18,138 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:08:18,138 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:08:18,175 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 10:08:18,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 10:08:18,198 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:08:18,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:08:18,201 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:08:18,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:08:18,211 INFO L82 PathProgramCache]: Analyzing trace with hash 524055129, now seen corresponding path program 1 times [2020-09-25 10:08:18,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:08:18,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967537662] [2020-09-25 10:08:18,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:08:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:18,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:18,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:19,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:20,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:20,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:20,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:21,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:22,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:22,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:23,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:23,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 10:08:23,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:08:23,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 10:08:23,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:23,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:23,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:08:23,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:08:23,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-25 10:08:23,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 10:08:23,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:08:23,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:23,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:23,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:23,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:08:23,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:23,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 10:08:23,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:23,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:23,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:08:23,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:23,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:08:23,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:23,912 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 10:08:23,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967537662] [2020-09-25 10:08:23,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:08:23,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:08:23,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521736655] [2020-09-25 10:08:23,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:08:23,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:08:23,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:08:23,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:08:23,950 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 10:08:26,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:08:26,122 INFO L93 Difference]: Finished difference Result 1205 states and 1651 transitions. [2020-09-25 10:08:26,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:08:26,125 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-09-25 10:08:26,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:08:26,150 INFO L225 Difference]: With dead ends: 1205 [2020-09-25 10:08:26,151 INFO L226 Difference]: Without dead ends: 627 [2020-09-25 10:08:26,165 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 10:08:26,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-09-25 10:08:26,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 613. [2020-09-25 10:08:26,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-09-25 10:08:26,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 759 transitions. [2020-09-25 10:08:26,281 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 759 transitions. Word has length 148 [2020-09-25 10:08:26,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:08:26,283 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 759 transitions. [2020-09-25 10:08:26,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:08:26,283 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 759 transitions. [2020-09-25 10:08:26,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 10:08:26,292 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:08:26,293 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:08:26,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:08:26,293 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:08:26,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:08:26,299 INFO L82 PathProgramCache]: Analyzing trace with hash -2122100332, now seen corresponding path program 1 times [2020-09-25 10:08:26,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:08:26,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164602826] [2020-09-25 10:08:26,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:08:26,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:26,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:26,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:26,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:27,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:29,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:29,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:31,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:31,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-25 10:08:31,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:08:31,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 10:08:31,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:31,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:31,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:08:31,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 10:08:31,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-25 10:08:31,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:31,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:08:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:31,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:31,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:31,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:08:31,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:31,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:08:31,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:31,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:31,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:08:31,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:31,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:08:31,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:31,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:08:31,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:31,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:31,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:31,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 10:08:31,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:31,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 10:08:31,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:31,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:31,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:08:31,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:31,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 10:08:31,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:31,665 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 10:08:31,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164602826] [2020-09-25 10:08:31,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:08:31,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 10:08:31,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692220270] [2020-09-25 10:08:31,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:08:31,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:08:31,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:08:31,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:08:31,671 INFO L87 Difference]: Start difference. First operand 613 states and 759 transitions. Second operand 5 states. [2020-09-25 10:08:34,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:08:34,009 INFO L93 Difference]: Finished difference Result 1592 states and 2044 transitions. [2020-09-25 10:08:34,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 10:08:34,010 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-09-25 10:08:34,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:08:34,017 INFO L225 Difference]: With dead ends: 1592 [2020-09-25 10:08:34,018 INFO L226 Difference]: Without dead ends: 1001 [2020-09-25 10:08:34,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:08:34,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2020-09-25 10:08:34,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 801. [2020-09-25 10:08:34,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 801 states. [2020-09-25 10:08:34,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 979 transitions. [2020-09-25 10:08:34,072 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 979 transitions. Word has length 182 [2020-09-25 10:08:34,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:08:34,073 INFO L479 AbstractCegarLoop]: Abstraction has 801 states and 979 transitions. [2020-09-25 10:08:34,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:08:34,073 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 979 transitions. [2020-09-25 10:08:34,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-09-25 10:08:34,079 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:08:34,083 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, 1, 1, 1, 1, 1, 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 10:08:34,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:08:34,084 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:08:34,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:08:34,084 INFO L82 PathProgramCache]: Analyzing trace with hash 694463905, now seen corresponding path program 1 times [2020-09-25 10:08:34,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:08:34,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487823660] [2020-09-25 10:08:34,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:08:34,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:34,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:34,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:34,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:35,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:35,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:36,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:36,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:39,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:39,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-09-25 10:08:39,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:08:39,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 10:08:39,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:39,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:39,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:08:39,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 10:08:39,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 10:08:39,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:39,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:08:39,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:39,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:39,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:39,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:08:39,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:39,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 10:08:39,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:39,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:39,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:08:39,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:39,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:08:39,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:39,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:08:39,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:39,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:39,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:39,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:08:39,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:39,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 10:08:39,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:39,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:39,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:08:39,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:39,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 10:08:39,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:39,604 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 10:08:39,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487823660] [2020-09-25 10:08:39,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:08:39,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 10:08:39,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027028227] [2020-09-25 10:08:39,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:08:39,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:08:39,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:08:39,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:08:39,609 INFO L87 Difference]: Start difference. First operand 801 states and 979 transitions. Second operand 5 states. [2020-09-25 10:08:42,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:08:42,166 INFO L93 Difference]: Finished difference Result 2166 states and 2751 transitions. [2020-09-25 10:08:42,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 10:08:42,167 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2020-09-25 10:08:42,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:08:42,181 INFO L225 Difference]: With dead ends: 2166 [2020-09-25 10:08:42,185 INFO L226 Difference]: Without dead ends: 1387 [2020-09-25 10:08:42,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:08:42,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2020-09-25 10:08:42,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 1268. [2020-09-25 10:08:42,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1268 states. [2020-09-25 10:08:42,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 1585 transitions. [2020-09-25 10:08:42,239 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 1585 transitions. Word has length 186 [2020-09-25 10:08:42,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:08:42,240 INFO L479 AbstractCegarLoop]: Abstraction has 1268 states and 1585 transitions. [2020-09-25 10:08:42,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:08:42,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 1585 transitions. [2020-09-25 10:08:42,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-25 10:08:42,248 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:08:42,248 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, 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] [2020-09-25 10:08:42,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:08:42,249 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:08:42,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:08:42,249 INFO L82 PathProgramCache]: Analyzing trace with hash -522556598, now seen corresponding path program 1 times [2020-09-25 10:08:42,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:08:42,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019367500] [2020-09-25 10:08:42,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:08:42,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:42,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:42,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:42,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:42,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:44,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:46,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:46,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:47,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:47,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-09-25 10:08:47,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:08:47,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 10:08:47,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:47,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:47,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 10:08:47,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 10:08:47,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 222 [2020-09-25 10:08:47,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:08:47,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:08:47,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:47,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:47,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:47,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:08:47,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:47,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 10:08:47,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:47,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:47,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:08:47,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:47,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:08:47,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:47,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:08:47,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:47,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:47,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:48,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:48,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 10:08:48,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:08:48,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 627 [2020-09-25 10:08:48,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:48,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:48,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:08:48,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:08:48,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 10:08:48,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:08:48,731 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:08:48,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019367500] [2020-09-25 10:08:48,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:08:48,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 10:08:48,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783842985] [2020-09-25 10:08:48,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 10:08:48,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:08:48,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 10:08:48,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:08:48,736 INFO L87 Difference]: Start difference. First operand 1268 states and 1585 transitions. Second operand 13 states. [2020-09-25 10:08:54,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:08:54,851 INFO L93 Difference]: Finished difference Result 3715 states and 5027 transitions. [2020-09-25 10:08:54,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 10:08:54,852 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 229 [2020-09-25 10:08:54,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:08:54,875 INFO L225 Difference]: With dead ends: 3715 [2020-09-25 10:08:54,876 INFO L226 Difference]: Without dead ends: 2469 [2020-09-25 10:08:54,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=257, Invalid=735, Unknown=0, NotChecked=0, Total=992 [2020-09-25 10:08:54,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2469 states. [2020-09-25 10:08:54,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2469 to 1943. [2020-09-25 10:08:54,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1943 states. [2020-09-25 10:08:54,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1943 states to 1943 states and 2321 transitions. [2020-09-25 10:08:55,000 INFO L78 Accepts]: Start accepts. Automaton has 1943 states and 2321 transitions. Word has length 229 [2020-09-25 10:08:55,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:08:55,000 INFO L479 AbstractCegarLoop]: Abstraction has 1943 states and 2321 transitions. [2020-09-25 10:08:55,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 10:08:55,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1943 states and 2321 transitions. [2020-09-25 10:08:55,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-09-25 10:08:55,009 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:08:55,009 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, 1, 1, 1, 1, 1, 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 10:08:55,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:08:55,010 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:08:55,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:08:55,011 INFO L82 PathProgramCache]: Analyzing trace with hash 617732913, now seen corresponding path program 1 times [2020-09-25 10:08:55,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:08:55,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360774708] [2020-09-25 10:08:55,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:08:55,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:55,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:55,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:55,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:57,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:58,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:58,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:00,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:00,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-09-25 10:09:00,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:09:00,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 10:09:00,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:00,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:00,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 10:09:00,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:09:00,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 240 [2020-09-25 10:09:00,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:09:00,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:00,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:00,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:00,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:00,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:00,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:00,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 10:09:00,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:00,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:00,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:09:00,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:00,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:09:00,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:00,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:09:00,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:00,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:00,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:00,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:09:00,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:00,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 10:09:00,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:00,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:00,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:09:00,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:09:00,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 10:09:00,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:09:00,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 10:09:00,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:00,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:00,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:01,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:01,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 10:09:01,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:09:01,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 625 [2020-09-25 10:09:01,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:01,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:01,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:09:01,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:09:01,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 10:09:01,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:01,202 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 10:09:01,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360774708] [2020-09-25 10:09:01,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:09:01,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 10:09:01,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38620786] [2020-09-25 10:09:01,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 10:09:01,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:01,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 10:09:01,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:09:01,205 INFO L87 Difference]: Start difference. First operand 1943 states and 2321 transitions. Second operand 14 states.