/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=0.2 --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/Problem11_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:20:10,791 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:20:10,795 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:20:10,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:20:10,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:20:10,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:20:10,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:20:10,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:20:10,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:20:10,869 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:20:10,871 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:20:10,872 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:20:10,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:20:10,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:20:10,879 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:20:10,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:20:10,883 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:20:10,884 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:20:10,885 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:20:10,896 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:20:10,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:20:10,901 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:20:10,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:20:10,903 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:20:10,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:20:10,906 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:20:10,906 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:20:10,909 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:20:10,910 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:20:10,912 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:20:10,913 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:20:10,914 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:20:10,914 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:20:10,915 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:20:10,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:20:10,916 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:20:10,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:20:10,917 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:20:10,917 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:20:10,921 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:20:10,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:20:10,923 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 11:20:10,971 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:20:10,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:20:10,974 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:20:10,974 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:20:10,975 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:20:10,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:20:10,975 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:20:10,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:20:10,976 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:20:10,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:20:10,977 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:20:10,977 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:20:10,978 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:20:10,978 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:20:10,978 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:20:10,978 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:20:10,979 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:20:10,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:20:10,979 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:20:10,979 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:20:10,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:20:10,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:20:10,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:20:10,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:20:10,980 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:20:10,981 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:20:10,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:20:10,981 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:20:10,981 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:20:10,981 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 11:20:11,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:20:11,495 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:20:11,501 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:20:11,503 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:20:11,504 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:20:11,505 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label18.c [2020-09-25 11:20:11,588 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3eb9c752f/72bcbc9c740943549af5a0d9e5a34cd8/FLAG859695dd9 [2020-09-25 11:20:12,246 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:20:12,247 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label18.c [2020-09-25 11:20:12,286 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3eb9c752f/72bcbc9c740943549af5a0d9e5a34cd8/FLAG859695dd9 [2020-09-25 11:20:12,442 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3eb9c752f/72bcbc9c740943549af5a0d9e5a34cd8 [2020-09-25 11:20:12,457 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:20:12,463 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:20:12,465 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:20:12,465 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:20:12,470 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:20:12,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:20:12" (1/1) ... [2020-09-25 11:20:12,476 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ccc0ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:12, skipping insertion in model container [2020-09-25 11:20:12,476 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:20:12" (1/1) ... [2020-09-25 11:20:12,486 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:20:12,554 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:20:13,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:20:13,417 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:20:13,697 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:20:13,720 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:20:13,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:13 WrapperNode [2020-09-25 11:20:13,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:20:13,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:20:13,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:20:13,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:20:13,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:13" (1/1) ... [2020-09-25 11:20:13,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:13" (1/1) ... [2020-09-25 11:20:13,796 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:13" (1/1) ... [2020-09-25 11:20:13,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:13" (1/1) ... [2020-09-25 11:20:13,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:13" (1/1) ... [2020-09-25 11:20:13,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:13" (1/1) ... [2020-09-25 11:20:13,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:13" (1/1) ... [2020-09-25 11:20:13,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:20:13,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:20:13,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:20:13,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:20:13,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:13" (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 11:20:14,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:20:14,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:20:14,025 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:20:14,025 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:20:14,025 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:20:14,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:20:14,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:20:14,026 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:20:14,026 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:20:14,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:20:14,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:20:16,425 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:20:16,426 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:20:16,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:20:16 BoogieIcfgContainer [2020-09-25 11:20:16,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:20:16,449 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:20:16,450 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:20:16,454 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:20:16,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:20:12" (1/3) ... [2020-09-25 11:20:16,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b42b96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:20:16, skipping insertion in model container [2020-09-25 11:20:16,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:13" (2/3) ... [2020-09-25 11:20:16,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b42b96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:20:16, skipping insertion in model container [2020-09-25 11:20:16,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:20:16" (3/3) ... [2020-09-25 11:20:16,464 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label18.c [2020-09-25 11:20:16,477 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:20:16,498 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:20:16,521 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:20:16,563 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:20:16,564 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:20:16,564 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:20:16,564 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:20:16,564 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:20:16,565 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:20:16,565 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:20:16,565 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:20:16,611 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states. [2020-09-25 11:20:16,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 11:20:16,626 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:16,627 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] [2020-09-25 11:20:16,628 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:16,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:16,636 INFO L82 PathProgramCache]: Analyzing trace with hash -123889732, now seen corresponding path program 1 times [2020-09-25 11:20:16,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:16,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886436789] [2020-09-25 11:20:16,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:16,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:16,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:17,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:17,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:18,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:18,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 11:20:18,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:20:18,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1285 [2020-09-25 11:20:18,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:18,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:18,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:20:18,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:20:18,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 11:20:18,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:20:18,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:18,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:18,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:18,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:18,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 11:20:18,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:18,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 11:20:18,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:18,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:18,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:18,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:18,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:20:18,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:18,319 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 11:20:18,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886436789] [2020-09-25 11:20:18,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:20:18,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:20:18,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101053485] [2020-09-25 11:20:18,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:20:18,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:18,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:20:18,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:20:18,352 INFO L87 Difference]: Start difference. First operand 813 states. Second operand 4 states. [2020-09-25 11:20:22,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:22,292 INFO L93 Difference]: Finished difference Result 1921 states and 2518 transitions. [2020-09-25 11:20:22,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:20:22,295 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-09-25 11:20:22,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:22,346 INFO L225 Difference]: With dead ends: 1921 [2020-09-25 11:20:22,346 INFO L226 Difference]: Without dead ends: 1036 [2020-09-25 11:20:22,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:20:22,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2020-09-25 11:20:22,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 978. [2020-09-25 11:20:22,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 978 states. [2020-09-25 11:20:22,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1165 transitions. [2020-09-25 11:20:22,499 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1165 transitions. Word has length 55 [2020-09-25 11:20:22,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:22,500 INFO L479 AbstractCegarLoop]: Abstraction has 978 states and 1165 transitions. [2020-09-25 11:20:22,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:20:22,501 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1165 transitions. [2020-09-25 11:20:22,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 11:20:22,510 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:22,510 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:20:22,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:20:22,511 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:22,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:22,512 INFO L82 PathProgramCache]: Analyzing trace with hash 497365935, now seen corresponding path program 1 times [2020-09-25 11:20:22,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:22,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913545510] [2020-09-25 11:20:22,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:22,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:22,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:22,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:24,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:26,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:26,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:26,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:27,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:27,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 11:20:27,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:20:27,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 11:20:27,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:27,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:27,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:20:27,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:20:27,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 11:20:27,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:27,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:27,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:27,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:27,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:27,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 11:20:27,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:27,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 11:20:27,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:27,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:27,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:20:27,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:27,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 11:20:27,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:27,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 11:20:27,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:27,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:28,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:28,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:28,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 11:20:28,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:20:28,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 767 [2020-09-25 11:20:28,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:28,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:28,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:20:28,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:28,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 11:20:28,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:28,837 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:20:28,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913545510] [2020-09-25 11:20:28,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:28,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 11:20:28,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417448499] [2020-09-25 11:20:28,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 11:20:28,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:28,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 11:20:28,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:20:28,842 INFO L87 Difference]: Start difference. First operand 978 states and 1165 transitions. Second operand 12 states. [2020-09-25 11:20:40,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:40,414 INFO L93 Difference]: Finished difference Result 2971 states and 3919 transitions. [2020-09-25 11:20:40,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 11:20:40,415 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 137 [2020-09-25 11:20:40,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:40,431 INFO L225 Difference]: With dead ends: 2971 [2020-09-25 11:20:40,431 INFO L226 Difference]: Without dead ends: 1979 [2020-09-25 11:20:40,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2020-09-25 11:20:40,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1979 states. [2020-09-25 11:20:40,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1979 to 1580. [2020-09-25 11:20:40,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1580 states. [2020-09-25 11:20:40,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 1852 transitions. [2020-09-25 11:20:40,503 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 1852 transitions. Word has length 137 [2020-09-25 11:20:40,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:40,504 INFO L479 AbstractCegarLoop]: Abstraction has 1580 states and 1852 transitions. [2020-09-25 11:20:40,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 11:20:40,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 1852 transitions. [2020-09-25 11:20:40,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 11:20:40,509 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:40,510 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:20:40,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:20:40,510 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:40,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:40,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1536608329, now seen corresponding path program 1 times [2020-09-25 11:20:40,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:40,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352859386] [2020-09-25 11:20:40,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:40,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:40,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:40,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:40,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:40,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:42,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:42,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:45,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:45,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:45,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 11:20:45,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:20:45,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 11:20:45,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:45,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:45,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:20:45,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:20:45,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-25 11:20:45,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:20:45,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:45,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:45,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:45,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:45,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 11:20:45,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:45,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 11:20:45,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:45,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:45,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:45,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:45,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:20:45,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:45,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 11:20:45,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:45,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:46,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:46,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 11:20:46,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:46,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 504 [2020-09-25 11:20:46,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:46,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:46,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:20:46,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:46,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 11:20:46,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:46,634 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 26 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:20:46,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352859386] [2020-09-25 11:20:46,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:46,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 11:20:46,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134982039] [2020-09-25 11:20:46,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 11:20:46,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:46,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 11:20:46,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:20:46,637 INFO L87 Difference]: Start difference. First operand 1580 states and 1852 transitions. Second operand 12 states. [2020-09-25 11:20:47,540 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2020-09-25 11:20:54,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:54,118 INFO L93 Difference]: Finished difference Result 3232 states and 3820 transitions. [2020-09-25 11:20:54,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 11:20:54,119 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 139 [2020-09-25 11:20:54,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:54,129 INFO L225 Difference]: With dead ends: 3232 [2020-09-25 11:20:54,129 INFO L226 Difference]: Without dead ends: 1851 [2020-09-25 11:20:54,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-09-25 11:20:54,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1851 states. [2020-09-25 11:20:54,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1851 to 1593. [2020-09-25 11:20:54,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1593 states. [2020-09-25 11:20:54,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 1874 transitions. [2020-09-25 11:20:54,183 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 1874 transitions. Word has length 139 [2020-09-25 11:20:54,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:54,184 INFO L479 AbstractCegarLoop]: Abstraction has 1593 states and 1874 transitions. [2020-09-25 11:20:54,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 11:20:54,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 1874 transitions. [2020-09-25 11:20:54,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 11:20:54,187 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:54,187 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:20:54,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:20:54,187 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:54,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:54,188 INFO L82 PathProgramCache]: Analyzing trace with hash -2087181888, now seen corresponding path program 1 times [2020-09-25 11:20:54,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:54,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [210169091] [2020-09-25 11:20:54,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:54,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:54,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:54,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:54,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:55,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:55,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:56,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:57,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:59,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:59,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 11:20:59,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:20:59,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:20:59,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:59,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:59,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:20:59,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:20:59,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 11:20:59,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:59,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:59,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:59,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:59,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:59,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 11:20:59,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:59,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 11:20:59,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:59,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:59,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:20:59,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:59,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:20:59,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:59,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 11:20:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:59,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:59,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:59,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 11:20:59,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:59,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-25 11:20:59,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:59,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:59,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:20:59,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:59,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 11:20:59,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:20:59,934 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:20:59,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [210169091] [2020-09-25 11:20:59,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:20:59,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 11:20:59,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792723823] [2020-09-25 11:20:59,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:20:59,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:59,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:20:59,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:20:59,939 INFO L87 Difference]: Start difference. First operand 1593 states and 1874 transitions. Second operand 8 states.