/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=0.3 --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 12:22:52,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:22:52,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:22:52,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:22:52,861 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:22:52,862 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:22:52,864 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:22:52,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:22:52,868 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:22:52,869 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:22:52,870 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:22:52,871 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:22:52,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:22:52,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:22:52,876 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:22:52,879 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:22:52,880 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:22:52,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:22:52,885 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:22:52,887 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:22:52,889 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:22:52,891 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:22:52,892 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:22:52,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:22:52,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:22:52,898 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:22:52,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:22:52,899 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:22:52,899 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:22:52,901 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:22:52,902 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:22:52,903 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:22:52,904 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:22:52,905 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:22:52,906 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:22:52,907 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:22:52,908 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:22:52,908 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:22:52,908 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:22:52,909 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:22:52,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:22:52,911 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 12:22:52,940 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:22:52,940 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:22:52,941 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:22:52,942 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:22:52,942 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:22:52,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:22:52,942 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:22:52,943 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:22:52,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:22:52,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:22:52,943 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:22:52,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:22:52,944 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:22:52,944 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:22:52,944 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:22:52,944 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:22:52,944 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:22:52,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:22:52,945 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:22:52,945 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:22:52,945 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:22:52,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:22:52,946 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:22:52,946 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:22:52,946 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:22:52,946 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:22:52,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:22:52,947 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:22:52,947 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:22:52,947 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:22:53,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:22:53,467 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:22:53,473 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:22:53,475 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:22:53,477 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:22:53,478 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label02.c [2020-09-25 12:22:53,579 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac6aa748a/b7fb89cff0c44caa961bdfd686732c9b/FLAG8dde6fc94 [2020-09-25 12:22:54,294 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:22:54,295 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label02.c [2020-09-25 12:22:54,319 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac6aa748a/b7fb89cff0c44caa961bdfd686732c9b/FLAG8dde6fc94 [2020-09-25 12:22:54,483 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac6aa748a/b7fb89cff0c44caa961bdfd686732c9b [2020-09-25 12:22:54,497 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:22:54,502 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:22:54,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:22:54,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:22:54,508 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:22:54,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:22:54" (1/1) ... [2020-09-25 12:22:54,514 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f78b0b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:54, skipping insertion in model container [2020-09-25 12:22:54,514 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:22:54" (1/1) ... [2020-09-25 12:22:54,523 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:22:54,582 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:22:55,103 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:22:55,111 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:22:55,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:22:55,395 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:22:55,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:55 WrapperNode [2020-09-25 12:22:55,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:22:55,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:22:55,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:22:55,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:22:55,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:55" (1/1) ... [2020-09-25 12:22:55,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:55" (1/1) ... [2020-09-25 12:22:55,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:55" (1/1) ... [2020-09-25 12:22:55,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:55" (1/1) ... [2020-09-25 12:22:55,473 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:55" (1/1) ... [2020-09-25 12:22:55,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:55" (1/1) ... [2020-09-25 12:22:55,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:55" (1/1) ... [2020-09-25 12:22:55,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:22:55,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:22:55,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:22:55,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:22:55,514 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:55" (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 12:22:55,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:22:55,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:22:55,592 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:22:55,592 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:22:55,592 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:22:55,592 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:22:55,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:22:55,593 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:22:55,593 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:22:55,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:22:55,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:22:57,000 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:22:57,007 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:22:57,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:22:57 BoogieIcfgContainer [2020-09-25 12:22:57,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:22:57,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:22:57,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:22:57,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:22:57,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:22:54" (1/3) ... [2020-09-25 12:22:57,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60617e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:22:57, skipping insertion in model container [2020-09-25 12:22:57,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:55" (2/3) ... [2020-09-25 12:22:57,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60617e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:22:57, skipping insertion in model container [2020-09-25 12:22:57,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:22:57" (3/3) ... [2020-09-25 12:22:57,027 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label02.c [2020-09-25 12:22:57,039 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:22:57,050 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:22:57,072 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:22:57,111 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:22:57,112 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:22:57,112 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:22:57,112 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:22:57,112 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:22:57,112 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:22:57,112 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:22:57,113 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:22:57,152 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 12:22:57,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-09-25 12:22:57,172 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:57,174 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 12:22:57,174 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:57,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:57,182 INFO L82 PathProgramCache]: Analyzing trace with hash -299401006, now seen corresponding path program 1 times [2020-09-25 12:22:57,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:57,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803637987] [2020-09-25 12:22:57,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:57,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:57,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:58,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:59,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:59,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:01,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:01,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:02,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:02,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 12:23:02,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:23:02,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 12:23:02,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:02,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:02,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:23:02,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 12:23:02,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 12:23:02,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:23:02,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:02,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:02,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:02,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:02,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:23:02,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:02,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 12:23:02,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:02,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:02,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:23:02,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:02,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 12:23:02,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:02,762 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 12:23:02,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803637987] [2020-09-25 12:23:02,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:23:02,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:23:02,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336608619] [2020-09-25 12:23:02,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:23:02,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:02,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:23:02,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:23:02,796 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 12:23:05,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:23:05,086 INFO L93 Difference]: Finished difference Result 1248 states and 1696 transitions. [2020-09-25 12:23:05,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:23:05,091 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2020-09-25 12:23:05,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:23:05,116 INFO L225 Difference]: With dead ends: 1248 [2020-09-25 12:23:05,116 INFO L226 Difference]: Without dead ends: 670 [2020-09-25 12:23:05,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 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 12:23:05,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-09-25 12:23:05,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 621. [2020-09-25 12:23:05,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-09-25 12:23:05,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 723 transitions. [2020-09-25 12:23:05,237 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 723 transitions. Word has length 119 [2020-09-25 12:23:05,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:23:05,238 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 723 transitions. [2020-09-25 12:23:05,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:23:05,238 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 723 transitions. [2020-09-25 12:23:05,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-25 12:23:05,247 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:05,248 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:23:05,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:23:05,248 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:05,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:05,249 INFO L82 PathProgramCache]: Analyzing trace with hash -290925319, now seen corresponding path program 1 times [2020-09-25 12:23:05,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:05,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986647525] [2020-09-25 12:23:05,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:05,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:05,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:05,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:05,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:06,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:06,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:07,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:08,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:10,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:10,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 12:23:10,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:23:10,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 12:23:10,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:10,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:10,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:23:10,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 12:23:10,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 12:23:10,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:10,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:10,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:10,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:10,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:23:10,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:10,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:23:10,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:10,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:10,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:23:10,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:10,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:23:10,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:10,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:23:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:10,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:10,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:10,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:23:10,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:10,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 12:23:10,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:10,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:10,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:23:10,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:10,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 12:23:10,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:10,596 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:23:10,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986647525] [2020-09-25 12:23:10,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:23:10,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 12:23:10,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160562756] [2020-09-25 12:23:10,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:23:10,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:10,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:23:10,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:23:10,600 INFO L87 Difference]: Start difference. First operand 621 states and 723 transitions. Second operand 6 states. [2020-09-25 12:23:12,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:23:12,807 INFO L93 Difference]: Finished difference Result 1533 states and 1846 transitions. [2020-09-25 12:23:12,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:23:12,808 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2020-09-25 12:23:12,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:23:12,815 INFO L225 Difference]: With dead ends: 1533 [2020-09-25 12:23:12,816 INFO L226 Difference]: Without dead ends: 934 [2020-09-25 12:23:12,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:23:12,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2020-09-25 12:23:12,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 772. [2020-09-25 12:23:12,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 772 states. [2020-09-25 12:23:12,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 953 transitions. [2020-09-25 12:23:12,863 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 953 transitions. Word has length 136 [2020-09-25 12:23:12,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:23:12,864 INFO L479 AbstractCegarLoop]: Abstraction has 772 states and 953 transitions. [2020-09-25 12:23:12,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:23:12,864 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 953 transitions. [2020-09-25 12:23:12,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-25 12:23:12,871 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:12,876 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 12:23:12,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:23:12,877 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:12,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:12,877 INFO L82 PathProgramCache]: Analyzing trace with hash 165606425, now seen corresponding path program 1 times [2020-09-25 12:23:12,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:12,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911023525] [2020-09-25 12:23:12,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:12,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:12,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:12,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:13,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:13,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:13,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:16,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:16,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 12:23:16,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:23:16,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3680 [2020-09-25 12:23:16,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:16,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:16,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:23:16,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-25 12:23:16,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 12:23:16,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:16,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:16,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:16,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:16,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:16,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:23:16,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:16,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 12:23:16,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:16,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:16,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:23:16,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:16,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:23:16,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:16,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:23:16,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:16,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:16,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:16,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 12:23:16,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:16,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 12:23:16,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:16,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:16,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:23:16,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:16,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 12:23:16,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:16,832 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:23:16,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911023525] [2020-09-25 12:23:16,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:23:16,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:23:16,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253518338] [2020-09-25 12:23:16,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:23:16,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:16,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:23:16,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:23:16,838 INFO L87 Difference]: Start difference. First operand 772 states and 953 transitions. Second operand 5 states. [2020-09-25 12:23:19,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:23:19,030 INFO L93 Difference]: Finished difference Result 2144 states and 2711 transitions. [2020-09-25 12:23:19,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:23:19,031 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-09-25 12:23:19,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:23:19,045 INFO L225 Difference]: With dead ends: 2144 [2020-09-25 12:23:19,045 INFO L226 Difference]: Without dead ends: 1394 [2020-09-25 12:23:19,049 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 12:23:19,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2020-09-25 12:23:19,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 1189. [2020-09-25 12:23:19,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1189 states. [2020-09-25 12:23:19,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1456 transitions. [2020-09-25 12:23:19,107 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1456 transitions. Word has length 145 [2020-09-25 12:23:19,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:23:19,109 INFO L479 AbstractCegarLoop]: Abstraction has 1189 states and 1456 transitions. [2020-09-25 12:23:19,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:23:19,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1456 transitions. [2020-09-25 12:23:19,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 12:23:19,118 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:19,118 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:23:19,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:23:19,121 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:19,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:19,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1494650338, now seen corresponding path program 1 times [2020-09-25 12:23:19,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:19,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25412812] [2020-09-25 12:23:19,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:19,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:19,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:19,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:20,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:20,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:21,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:21,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:21,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:24,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:24,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-25 12:23:24,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:23:24,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 12:23:24,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:24,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:24,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:23:24,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 12:23:24,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 12:23:24,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:24,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:24,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:24,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:24,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:23:24,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:24,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:23:24,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:24,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:24,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:23:24,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:24,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:23:24,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:24,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:23:24,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:24,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:24,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:24,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:23:24,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:24,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:23:24,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:24,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:24,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:23:24,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:24,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 12:23:24,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:24,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 12:23:24,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:24,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:24,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:24,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:24,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 12:23:24,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:23:24,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-25 12:23:24,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:24,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:24,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:23:24,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:24,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 12:23:24,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:24,969 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 12:23:24,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25412812] [2020-09-25 12:23:24,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:23:24,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:23:24,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988816128] [2020-09-25 12:23:24,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:23:24,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:24,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:23:24,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:23:24,973 INFO L87 Difference]: Start difference. First operand 1189 states and 1456 transitions. Second operand 10 states. [2020-09-25 12:23:28,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:23:28,847 INFO L93 Difference]: Finished difference Result 2917 states and 3712 transitions. [2020-09-25 12:23:28,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 12:23:28,850 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 170 [2020-09-25 12:23:28,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:23:28,857 INFO L225 Difference]: With dead ends: 2917 [2020-09-25 12:23:28,858 INFO L226 Difference]: Without dead ends: 1302 [2020-09-25 12:23:28,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210 [2020-09-25 12:23:28,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2020-09-25 12:23:28,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 1138. [2020-09-25 12:23:28,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1138 states. [2020-09-25 12:23:28,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1304 transitions. [2020-09-25 12:23:28,904 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1304 transitions. Word has length 170 [2020-09-25 12:23:28,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:23:28,905 INFO L479 AbstractCegarLoop]: Abstraction has 1138 states and 1304 transitions. [2020-09-25 12:23:28,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:23:28,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1304 transitions. [2020-09-25 12:23:28,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 12:23:28,910 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:28,911 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:23:28,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:23:28,912 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:28,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:28,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1683203294, now seen corresponding path program 1 times [2020-09-25 12:23:28,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:28,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15492864] [2020-09-25 12:23:28,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:28,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:28,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:29,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:29,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:29,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:29,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:30,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:31,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:32,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:32,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 12:23:32,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:23:32,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3800 [2020-09-25 12:23:32,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:32,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:32,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:23:32,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 12:23:32,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 12:23:32,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:32,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:32,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:32,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:32,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:23:32,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:32,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:23:32,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:32,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:32,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:23:32,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:32,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:23:32,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:32,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:23:32,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:32,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:32,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:32,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:23:32,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:32,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:23:32,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:32,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:32,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:23:32,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:32,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:23:32,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:32,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 12:23:32,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:32,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:32,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:32,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 12:23:32,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:32,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 12:23:32,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:32,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:32,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:23:32,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:32,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 12:23:32,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:33,062 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 12:23:33,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [15492864] [2020-09-25 12:23:33,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:23:33,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:23:33,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424727633] [2020-09-25 12:23:33,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:23:33,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:33,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:23:33,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:23:33,066 INFO L87 Difference]: Start difference. First operand 1138 states and 1304 transitions. Second operand 5 states. [2020-09-25 12:23:35,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:23:35,110 INFO L93 Difference]: Finished difference Result 2752 states and 3242 transitions. [2020-09-25 12:23:35,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:23:35,111 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 176 [2020-09-25 12:23:35,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:23:35,121 INFO L225 Difference]: With dead ends: 2752 [2020-09-25 12:23:35,121 INFO L226 Difference]: Without dead ends: 1459 [2020-09-25 12:23:35,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 12:23:35,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2020-09-25 12:23:35,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 1423. [2020-09-25 12:23:35,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1423 states. [2020-09-25 12:23:35,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 1677 transitions. [2020-09-25 12:23:35,174 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 1677 transitions. Word has length 176 [2020-09-25 12:23:35,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:23:35,175 INFO L479 AbstractCegarLoop]: Abstraction has 1423 states and 1677 transitions. [2020-09-25 12:23:35,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:23:35,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 1677 transitions. [2020-09-25 12:23:35,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-09-25 12:23:35,182 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:35,183 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 12:23:35,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:23:35,183 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:35,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:35,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1371800963, now seen corresponding path program 1 times [2020-09-25 12:23:35,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:35,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680283592] [2020-09-25 12:23:35,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:35,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:35,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:35,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:35,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:36,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:40,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:40,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-09-25 12:23:40,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:23:40,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-25 12:23:40,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:40,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:40,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:23:40,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-09-25 12:23:40,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 12:23:40,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:40,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:40,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:40,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:40,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:40,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:23:40,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:40,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:23:40,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:40,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:40,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:23:40,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:40,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:23:40,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:23:40,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:23:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:40,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:40,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:40,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:23:40,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:40,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:23:40,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:40,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:40,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:23:40,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:40,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:23:40,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:40,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 12:23:40,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:40,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:40,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:40,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:23:40,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:40,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 12:23:40,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:40,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:40,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:23:40,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:40,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 12:23:40,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:40,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-25 12:23:40,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:40,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:40,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:40,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 12:23:40,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:40,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-25 12:23:40,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:40,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:40,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:23:40,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:23:40,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 12:23:40,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:23:40,688 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 12:23:40,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680283592] [2020-09-25 12:23:40,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:23:40,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:23:40,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401057663] [2020-09-25 12:23:40,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:23:40,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:40,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:23:40,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:23:40,691 INFO L87 Difference]: Start difference. First operand 1423 states and 1677 transitions. Second operand 7 states.