/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:46:09,400 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:46:09,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:46:09,433 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:46:09,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:46:09,435 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:46:09,437 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:46:09,439 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:46:09,441 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:46:09,442 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:46:09,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:46:09,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:46:09,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:46:09,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:46:09,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:46:09,448 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:46:09,449 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:46:09,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:46:09,452 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:46:09,455 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:46:09,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:46:09,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:46:09,459 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:46:09,460 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:46:09,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:46:09,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:46:09,463 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:46:09,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:46:09,467 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:46:09,468 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:46:09,468 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:46:09,469 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:46:09,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:46:09,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:46:09,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:46:09,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:46:09,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:46:09,476 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:46:09,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:46:09,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:46:09,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:46:09,481 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 06:46:09,541 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:46:09,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:46:09,543 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:46:09,543 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:46:09,543 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:46:09,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:46:09,544 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:46:09,545 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:46:09,545 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:46:09,545 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:46:09,545 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:46:09,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:46:09,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:46:09,546 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:46:09,546 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:46:09,546 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:46:09,546 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:46:09,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:46:09,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:46:09,548 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:46:09,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:46:09,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:46:09,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:46:09,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:46:09,550 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:46:09,550 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:46:09,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:46:09,550 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:46:09,550 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:46:09,550 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:46:10,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:46:10,045 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:46:10,049 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:46:10,051 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:46:10,052 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:46:10,053 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label54.c [2020-09-25 06:46:10,144 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19154cc74/af6e0c1c02eb4864b4e96e37a66758cd/FLAG48dbf346b [2020-09-25 06:46:10,818 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:46:10,819 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label54.c [2020-09-25 06:46:10,837 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19154cc74/af6e0c1c02eb4864b4e96e37a66758cd/FLAG48dbf346b [2020-09-25 06:46:11,060 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19154cc74/af6e0c1c02eb4864b4e96e37a66758cd [2020-09-25 06:46:11,074 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:46:11,081 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:46:11,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:46:11,082 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:46:11,087 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:46:11,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:46:11" (1/1) ... [2020-09-25 06:46:11,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d72532b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:11, skipping insertion in model container [2020-09-25 06:46:11,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:46:11" (1/1) ... [2020-09-25 06:46:11,102 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:46:11,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:46:11,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:46:11,639 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:46:11,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:46:11,866 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:46:11,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:11 WrapperNode [2020-09-25 06:46:11,866 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:46:11,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:46:11,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:46:11,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:46:11,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:11" (1/1) ... [2020-09-25 06:46:11,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:11" (1/1) ... [2020-09-25 06:46:11,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:11" (1/1) ... [2020-09-25 06:46:11,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:11" (1/1) ... [2020-09-25 06:46:11,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:11" (1/1) ... [2020-09-25 06:46:11,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:11" (1/1) ... [2020-09-25 06:46:11,971 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:11" (1/1) ... [2020-09-25 06:46:11,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:46:11,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:46:11,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:46:11,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:46:11,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:11" (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 06:46:12,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:46:12,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:46:12,054 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:46:12,054 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:46:12,054 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:46:12,055 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:46:12,055 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:46:12,055 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:46:12,055 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:46:12,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:46:12,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:46:13,376 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:46:13,376 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:46:13,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:46:13 BoogieIcfgContainer [2020-09-25 06:46:13,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:46:13,387 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:46:13,387 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:46:13,391 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:46:13,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:46:11" (1/3) ... [2020-09-25 06:46:13,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590b40ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:46:13, skipping insertion in model container [2020-09-25 06:46:13,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:11" (2/3) ... [2020-09-25 06:46:13,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590b40ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:46:13, skipping insertion in model container [2020-09-25 06:46:13,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:46:13" (3/3) ... [2020-09-25 06:46:13,396 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label54.c [2020-09-25 06:46:13,408 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:46:13,419 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:46:13,443 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:46:13,481 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:46:13,481 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:46:13,481 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:46:13,481 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:46:13,481 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:46:13,482 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:46:13,482 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:46:13,482 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:46:13,517 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 06:46:13,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 06:46:13,537 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:13,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:46:13,539 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:13,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:13,547 INFO L82 PathProgramCache]: Analyzing trace with hash 79338610, now seen corresponding path program 1 times [2020-09-25 06:46:13,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:13,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100677907] [2020-09-25 06:46:13,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:13,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:13,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:14,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:14,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:14,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:15,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:16,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:16,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:17,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:18,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:18,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-25 06:46:18,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:46:18,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 06:46:18,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:18,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:18,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:46:18,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:46:18,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 06:46:18,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 06:46:19,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:19,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:19,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:19,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:19,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:46:19,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:19,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 06:46:19,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:19,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:19,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:19,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:19,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:46:19,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:19,180 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 06:46:19,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100677907] [2020-09-25 06:46:19,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:46:19,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:46:19,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264801840] [2020-09-25 06:46:19,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:46:19,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:19,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:46:19,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:46:19,211 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 06:46:21,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:21,577 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 06:46:21,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:46:21,581 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-09-25 06:46:21,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:21,632 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 06:46:21,633 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 06:46:21,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:46:21,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 06:46:21,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 06:46:21,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 06:46:21,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 06:46:21,776 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 127 [2020-09-25 06:46:21,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:21,778 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 06:46:21,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:46:21,779 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 06:46:21,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-25 06:46:21,792 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:21,796 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:46:21,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:46:21,796 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:21,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:21,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1605843042, now seen corresponding path program 1 times [2020-09-25 06:46:21,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:21,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646064323] [2020-09-25 06:46:21,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:21,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:21,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:21,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:22,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:22,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:23,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:23,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:23,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:24,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:26,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:26,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 06:46:26,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:46:26,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 06:46:26,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:26,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:26,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:26,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 06:46:26,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 06:46:26,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:27,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:27,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:27,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:27,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:27,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:46:27,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:27,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 06:46:27,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:27,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:27,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:27,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:27,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:27,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 06:46:27,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:46:27,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:27,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:27,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:27,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:46:27,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:27,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 06:46:27,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:27,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:27,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:27,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:27,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 06:46:27,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:27,285 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:46:27,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646064323] [2020-09-25 06:46:27,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:46:27,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:46:27,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937759569] [2020-09-25 06:46:27,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:46:27,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:27,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:46:27,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:46:27,294 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 06:46:29,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:29,319 INFO L93 Difference]: Finished difference Result 1757 states and 2222 transitions. [2020-09-25 06:46:29,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:46:29,326 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-09-25 06:46:29,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:29,334 INFO L225 Difference]: With dead ends: 1757 [2020-09-25 06:46:29,334 INFO L226 Difference]: Without dead ends: 1046 [2020-09-25 06:46:29,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:46:29,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2020-09-25 06:46:29,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 1036. [2020-09-25 06:46:29,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2020-09-25 06:46:29,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1283 transitions. [2020-09-25 06:46:29,409 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1283 transitions. Word has length 145 [2020-09-25 06:46:29,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:29,410 INFO L479 AbstractCegarLoop]: Abstraction has 1036 states and 1283 transitions. [2020-09-25 06:46:29,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:46:29,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1283 transitions. [2020-09-25 06:46:29,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 06:46:29,415 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:29,415 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:46:29,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:46:29,416 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:29,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:29,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1464054185, now seen corresponding path program 1 times [2020-09-25 06:46:29,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:29,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214926866] [2020-09-25 06:46:29,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:29,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:29,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:29,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:30,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:30,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:30,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:30,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:33,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:33,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 06:46:33,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:46:33,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4142 [2020-09-25 06:46:33,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:33,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:33,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:33,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 06:46:33,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 06:46:33,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:33,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:33,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:33,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:33,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:33,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:46:33,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:33,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:46:33,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:33,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:33,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:33,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:33,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:33,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:33,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:46:33,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:33,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:33,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:33,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 06:46:33,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:33,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 06:46:33,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:33,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:33,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:33,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:33,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 06:46:33,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:33,895 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:46:33,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214926866] [2020-09-25 06:46:33,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:46:33,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 06:46:33,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940850986] [2020-09-25 06:46:33,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:46:33,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:33,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:46:33,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:46:33,900 INFO L87 Difference]: Start difference. First operand 1036 states and 1283 transitions. Second operand 6 states. [2020-09-25 06:46:36,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:36,722 INFO L93 Difference]: Finished difference Result 2820 states and 3635 transitions. [2020-09-25 06:46:36,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:46:36,723 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2020-09-25 06:46:36,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:36,730 INFO L225 Difference]: With dead ends: 2820 [2020-09-25 06:46:36,730 INFO L226 Difference]: Without dead ends: 1125 [2020-09-25 06:46:36,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:46:36,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2020-09-25 06:46:36,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1115. [2020-09-25 06:46:36,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1115 states. [2020-09-25 06:46:36,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1346 transitions. [2020-09-25 06:46:36,775 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1346 transitions. Word has length 161 [2020-09-25 06:46:36,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:36,776 INFO L479 AbstractCegarLoop]: Abstraction has 1115 states and 1346 transitions. [2020-09-25 06:46:36,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:46:36,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1346 transitions. [2020-09-25 06:46:36,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 06:46:36,780 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:36,781 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:46:36,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:46:36,781 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:36,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:36,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1343420525, now seen corresponding path program 1 times [2020-09-25 06:46:36,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:36,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45138802] [2020-09-25 06:46:36,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:36,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:36,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:36,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:37,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:37,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:38,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:41,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:41,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 06:46:41,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:46:41,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:46:41,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:41,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:41,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:46:41,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 06:46:41,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 06:46:41,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:41,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:41,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:41,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:41,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:41,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:46:41,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:41,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:46:41,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:41,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:41,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:41,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:41,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:41,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:41,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:46:42,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:42,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:42,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:42,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:46:42,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:42,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 06:46:42,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:42,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:42,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:46:42,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:42,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 06:46:42,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:42,254 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:46:42,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45138802] [2020-09-25 06:46:42,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:46:42,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:46:42,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682125632] [2020-09-25 06:46:42,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:46:42,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:42,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:46:42,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:46:42,257 INFO L87 Difference]: Start difference. First operand 1115 states and 1346 transitions. Second operand 8 states. [2020-09-25 06:46:46,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:46,137 INFO L93 Difference]: Finished difference Result 3322 states and 4266 transitions. [2020-09-25 06:46:46,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:46:46,138 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 165 [2020-09-25 06:46:46,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:46,151 INFO L225 Difference]: With dead ends: 3322 [2020-09-25 06:46:46,152 INFO L226 Difference]: Without dead ends: 2136 [2020-09-25 06:46:46,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:46:46,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2136 states. [2020-09-25 06:46:46,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2136 to 2084. [2020-09-25 06:46:46,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2084 states. [2020-09-25 06:46:46,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2084 states to 2084 states and 2489 transitions. [2020-09-25 06:46:46,228 INFO L78 Accepts]: Start accepts. Automaton has 2084 states and 2489 transitions. Word has length 165 [2020-09-25 06:46:46,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:46,229 INFO L479 AbstractCegarLoop]: Abstraction has 2084 states and 2489 transitions. [2020-09-25 06:46:46,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:46:46,229 INFO L276 IsEmpty]: Start isEmpty. Operand 2084 states and 2489 transitions. [2020-09-25 06:46:46,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 06:46:46,239 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:46,239 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:46:46,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:46:46,240 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:46,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:46,240 INFO L82 PathProgramCache]: Analyzing trace with hash 207491829, now seen corresponding path program 1 times [2020-09-25 06:46:46,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:46,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510957966] [2020-09-25 06:46:46,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:46,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:46,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:46,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:46,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:46,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:47,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:48,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:51,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:51,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 06:46:51,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:46:51,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 06:46:51,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:51,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:51,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:51,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-09-25 06:46:51,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 06:46:51,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:51,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:51,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:51,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:51,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:51,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:46:51,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:51,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:46:51,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:51,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:51,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:51,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:51,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:51,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 06:46:51,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:46:51,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:51,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:51,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:51,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:46:51,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:51,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:46:51,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:51,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:51,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:51,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:51,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:51,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:46:51,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 06:46:51,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:51,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:51,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:51,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 06:46:51,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:51,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 06:46:51,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:51,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:51,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:51,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:51,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 06:46:51,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:51,585 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 06:46:51,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1510957966] [2020-09-25 06:46:51,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:46:51,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:46:51,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690127781] [2020-09-25 06:46:51,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:46:51,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:51,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:46:51,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:46:51,588 INFO L87 Difference]: Start difference. First operand 2084 states and 2489 transitions. Second operand 5 states. [2020-09-25 06:46:53,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:53,495 INFO L93 Difference]: Finished difference Result 4884 states and 5996 transitions. [2020-09-25 06:46:53,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:46:53,496 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-09-25 06:46:53,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:53,510 INFO L225 Difference]: With dead ends: 4884 [2020-09-25 06:46:53,511 INFO L226 Difference]: Without dead ends: 2822 [2020-09-25 06:46:53,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:46:53,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2822 states. [2020-09-25 06:46:53,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2822 to 2708. [2020-09-25 06:46:53,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2708 states. [2020-09-25 06:46:53,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2708 states to 2708 states and 3279 transitions. [2020-09-25 06:46:53,595 INFO L78 Accepts]: Start accepts. Automaton has 2708 states and 3279 transitions. Word has length 189 [2020-09-25 06:46:53,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:53,596 INFO L479 AbstractCegarLoop]: Abstraction has 2708 states and 3279 transitions. [2020-09-25 06:46:53,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:46:53,596 INFO L276 IsEmpty]: Start isEmpty. Operand 2708 states and 3279 transitions. [2020-09-25 06:46:53,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-25 06:46:53,605 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:53,605 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:46:53,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:46:53,606 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:53,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:53,606 INFO L82 PathProgramCache]: Analyzing trace with hash 924850542, now seen corresponding path program 1 times [2020-09-25 06:46:53,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:53,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283823902] [2020-09-25 06:46:53,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:53,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:53,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:53,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:54,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:55,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:56,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:57,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:58,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:58,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-25 06:46:58,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:46:58,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 06:46:58,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:58,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:58,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:46:58,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 06:46:58,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 06:46:58,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:46:58,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:58,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:58,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:58,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:58,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:46:58,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:58,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 06:46:58,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:58,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:58,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:58,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:58,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 06:46:58,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:46:58,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:46:58,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:58,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:58,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:58,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 06:46:58,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:58,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 06:46:58,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:58,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:58,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:58,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:46:58,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 06:46:58,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:46:58,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-25 06:46:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:58,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:58,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:58,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 06:46:58,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:58,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:46:58,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:58,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:58,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:58,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 06:46:58,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:58,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:46:58,911 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 52 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 06:46:58,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283823902] [2020-09-25 06:46:58,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:46:58,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:46:58,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337934747] [2020-09-25 06:46:58,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:46:58,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:58,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:46:58,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:46:58,913 INFO L87 Difference]: Start difference. First operand 2708 states and 3279 transitions. Second operand 7 states.