/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=0.4 --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_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:35:16,356 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:35:16,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:35:16,412 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:35:16,413 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:35:16,426 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:35:16,427 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:35:16,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:35:16,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:35:16,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:35:16,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:35:16,441 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:35:16,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:35:16,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:35:16,450 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:35:16,453 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:35:16,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:35:16,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:35:16,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:35:16,468 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:35:16,471 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:35:16,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:35:16,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:35:16,475 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:35:16,480 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:35:16,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:35:16,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:35:16,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:35:16,485 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:35:16,487 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:35:16,487 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:35:16,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:35:16,489 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:35:16,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:35:16,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:35:16,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:35:16,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:35:16,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:35:16,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:35:16,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:35:16,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:35:16,497 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 05:35:16,550 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:35:16,550 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:35:16,553 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:35:16,553 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:35:16,553 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:35:16,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:35:16,554 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:35:16,554 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:35:16,554 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:35:16,554 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:35:16,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:35:16,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:35:16,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:35:16,556 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:35:16,557 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:35:16,557 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:35:16,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:35:16,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:35:16,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:35:16,558 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:35:16,558 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:35:16,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:35:16,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:35:16,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:35:16,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:35:16,559 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:35:16,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:35:16,559 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:35:16,560 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:35:16,560 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 05:35:17,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:35:17,028 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:35:17,035 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:35:17,037 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:35:17,038 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:35:17,039 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label10.c [2020-09-25 05:35:17,134 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4fe61dc3f/8aaed851804e45a8873ea7fae48da3e3/FLAG233f921df [2020-09-25 05:35:17,775 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:35:17,776 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label10.c [2020-09-25 05:35:17,790 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4fe61dc3f/8aaed851804e45a8873ea7fae48da3e3/FLAG233f921df [2020-09-25 05:35:18,016 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4fe61dc3f/8aaed851804e45a8873ea7fae48da3e3 [2020-09-25 05:35:18,029 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:35:18,034 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:35:18,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:35:18,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:35:18,040 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:35:18,041 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:35:18" (1/1) ... [2020-09-25 05:35:18,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fe12ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:18, skipping insertion in model container [2020-09-25 05:35:18,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:35:18" (1/1) ... [2020-09-25 05:35:18,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:35:18,126 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:35:18,593 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:35:18,599 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:35:18,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:35:18,863 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:35:18,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:18 WrapperNode [2020-09-25 05:35:18,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:35:18,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:35:18,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:35:18,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:35:18,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:18" (1/1) ... [2020-09-25 05:35:18,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:18" (1/1) ... [2020-09-25 05:35:18,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:18" (1/1) ... [2020-09-25 05:35:18,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:18" (1/1) ... [2020-09-25 05:35:18,961 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:18" (1/1) ... [2020-09-25 05:35:18,977 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:18" (1/1) ... [2020-09-25 05:35:18,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:18" (1/1) ... [2020-09-25 05:35:18,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:35:18,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:35:18,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:35:18,990 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:35:18,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:18" (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 05:35:19,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:35:19,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:35:19,095 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:35:19,095 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:35:19,096 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:35:19,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:35:19,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:35:19,096 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:35:19,096 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:35:19,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:35:19,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:35:20,527 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:35:20,527 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:35:20,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:35:20 BoogieIcfgContainer [2020-09-25 05:35:20,537 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:35:20,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:35:20,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:35:20,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:35:20,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:35:18" (1/3) ... [2020-09-25 05:35:20,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3887f53b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:35:20, skipping insertion in model container [2020-09-25 05:35:20,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:18" (2/3) ... [2020-09-25 05:35:20,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3887f53b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:35:20, skipping insertion in model container [2020-09-25 05:35:20,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:35:20" (3/3) ... [2020-09-25 05:35:20,548 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label10.c [2020-09-25 05:35:20,560 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:35:20,572 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:35:20,595 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:35:20,633 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:35:20,633 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:35:20,633 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:35:20,633 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:35:20,634 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:35:20,636 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:35:20,636 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:35:20,636 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:35:20,672 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 05:35:20,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 05:35:20,698 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:20,700 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:35:20,700 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:20,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:20,709 INFO L82 PathProgramCache]: Analyzing trace with hash 2114164186, now seen corresponding path program 1 times [2020-09-25 05:35:20,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:20,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66102414] [2020-09-25 05:35:20,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:21,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:21,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:21,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:21,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:22,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:22,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:24,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:24,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:25,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:26,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:26,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 05:35:26,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:35:26,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-09-25 05:35:26,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:26,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:26,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:35:26,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 05:35:26,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-25 05:35:26,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:35:26,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:26,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:26,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:26,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:26,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:35:26,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:26,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 05:35:26,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:26,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:26,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:26,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:26,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:35:26,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:26,365 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 05:35:26,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66102414] [2020-09-25 05:35:26,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:35:26,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:35:26,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050958332] [2020-09-25 05:35:26,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:35:26,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:26,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:35:26,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:35:26,398 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-25 05:35:29,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:29,431 INFO L93 Difference]: Finished difference Result 1539 states and 2132 transitions. [2020-09-25 05:35:29,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:35:29,434 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-09-25 05:35:29,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:29,475 INFO L225 Difference]: With dead ends: 1539 [2020-09-25 05:35:29,476 INFO L226 Difference]: Without dead ends: 935 [2020-09-25 05:35:29,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:35:29,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2020-09-25 05:35:29,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 878. [2020-09-25 05:35:29,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2020-09-25 05:35:29,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1089 transitions. [2020-09-25 05:35:29,643 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1089 transitions. Word has length 161 [2020-09-25 05:35:29,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:29,645 INFO L479 AbstractCegarLoop]: Abstraction has 878 states and 1089 transitions. [2020-09-25 05:35:29,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:35:29,645 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1089 transitions. [2020-09-25 05:35:29,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 05:35:29,658 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:29,659 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:35:29,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:35:29,659 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:29,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:29,660 INFO L82 PathProgramCache]: Analyzing trace with hash -880282106, now seen corresponding path program 1 times [2020-09-25 05:35:29,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:29,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917071238] [2020-09-25 05:35:29,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:29,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:29,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:29,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:29,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:30,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:30,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:30,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:32,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:32,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:33,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:34,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:34,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 05:35:34,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:35:34,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 05:35:34,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:34,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:34,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:34,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 05:35:34,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-09-25 05:35:34,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:35:34,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:34,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:34,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:34,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:35:34,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:34,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:35:34,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:34,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:34,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:34,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:34,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:34,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 05:35:34,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:35:34,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:34,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:34,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:34,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:35:34,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:34,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:35:34,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:34,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:34,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:34,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:34,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 05:35:34,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:34,984 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 05:35:34,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917071238] [2020-09-25 05:35:34,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:35:34,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:35:34,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667445210] [2020-09-25 05:35:34,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:35:34,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:34,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:35:34,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:35:34,990 INFO L87 Difference]: Start difference. First operand 878 states and 1089 transitions. Second operand 5 states. [2020-09-25 05:35:36,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:36,928 INFO L93 Difference]: Finished difference Result 2199 states and 2857 transitions. [2020-09-25 05:35:36,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:35:36,928 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2020-09-25 05:35:36,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:36,938 INFO L225 Difference]: With dead ends: 2199 [2020-09-25 05:35:36,938 INFO L226 Difference]: Without dead ends: 1343 [2020-09-25 05:35:36,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:35:36,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2020-09-25 05:35:37,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1330. [2020-09-25 05:35:37,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1330 states. [2020-09-25 05:35:37,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 1680 transitions. [2020-09-25 05:35:37,019 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 1680 transitions. Word has length 179 [2020-09-25 05:35:37,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:37,021 INFO L479 AbstractCegarLoop]: Abstraction has 1330 states and 1680 transitions. [2020-09-25 05:35:37,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:35:37,022 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 1680 transitions. [2020-09-25 05:35:37,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-25 05:35:37,030 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:37,031 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:35:37,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:35:37,031 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:37,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:37,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1103327617, now seen corresponding path program 1 times [2020-09-25 05:35:37,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:37,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608496596] [2020-09-25 05:35:37,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:37,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:37,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:37,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:37,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:37,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:42,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:42,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 05:35:42,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:35:42,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 05:35:42,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:42,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:42,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:35:42,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 05:35:42,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 05:35:42,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:42,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:42,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:42,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:42,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:42,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:35:42,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:42,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 05:35:42,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:42,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:42,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:42,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:42,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 05:35:42,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:42,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:35:42,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:42,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:42,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:42,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 05:35:42,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:42,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 05:35:42,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:42,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:42,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:42,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:35:42,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 05:35:42,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:42,326 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:35:42,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608496596] [2020-09-25 05:35:42,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:35:42,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 05:35:42,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47987964] [2020-09-25 05:35:42,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:35:42,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:42,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:35:42,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:35:42,330 INFO L87 Difference]: Start difference. First operand 1330 states and 1680 transitions. Second operand 7 states. [2020-09-25 05:35:44,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:44,472 INFO L93 Difference]: Finished difference Result 3922 states and 5203 transitions. [2020-09-25 05:35:44,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:35:44,473 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 195 [2020-09-25 05:35:44,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:44,489 INFO L225 Difference]: With dead ends: 3922 [2020-09-25 05:35:44,489 INFO L226 Difference]: Without dead ends: 2614 [2020-09-25 05:35:44,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:35:44,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2614 states. [2020-09-25 05:35:44,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2614 to 2431. [2020-09-25 05:35:44,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2431 states. [2020-09-25 05:35:44,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 3117 transitions. [2020-09-25 05:35:44,603 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 3117 transitions. Word has length 195 [2020-09-25 05:35:44,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:44,604 INFO L479 AbstractCegarLoop]: Abstraction has 2431 states and 3117 transitions. [2020-09-25 05:35:44,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:35:44,604 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 3117 transitions. [2020-09-25 05:35:44,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-25 05:35:44,618 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:44,619 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:35:44,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:35:44,620 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:44,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:44,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1228146501, now seen corresponding path program 1 times [2020-09-25 05:35:44,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:44,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479145899] [2020-09-25 05:35:44,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:44,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:44,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:44,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:44,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:45,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:46,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:48,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:49,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:49,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:49,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:49,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-09-25 05:35:49,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:35:49,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 05:35:49,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:49,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:49,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:35:49,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 05:35:49,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 05:35:49,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:35:49,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:49,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:49,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:49,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:49,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:35:49,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:49,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:35:49,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:49,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:49,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:49,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:49,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:49,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:49,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:35:49,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:49,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:50,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:50,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:35:50,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:50,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 05:35:50,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:50,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:50,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:50,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:50,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 05:35:50,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:50,226 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 05:35:50,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479145899] [2020-09-25 05:35:50,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:35:50,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:35:50,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633583010] [2020-09-25 05:35:50,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:35:50,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:50,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:35:50,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:35:50,229 INFO L87 Difference]: Start difference. First operand 2431 states and 3117 transitions. Second operand 8 states. [2020-09-25 05:35:54,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:54,590 INFO L93 Difference]: Finished difference Result 7051 states and 9367 transitions. [2020-09-25 05:35:54,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:35:54,591 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 199 [2020-09-25 05:35:54,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:54,613 INFO L225 Difference]: With dead ends: 7051 [2020-09-25 05:35:54,613 INFO L226 Difference]: Without dead ends: 4422 [2020-09-25 05:35:54,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:35:54,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4422 states. [2020-09-25 05:35:54,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4422 to 4347. [2020-09-25 05:35:54,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4347 states. [2020-09-25 05:35:54,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4347 states to 4347 states and 5413 transitions. [2020-09-25 05:35:54,767 INFO L78 Accepts]: Start accepts. Automaton has 4347 states and 5413 transitions. Word has length 199 [2020-09-25 05:35:54,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:54,767 INFO L479 AbstractCegarLoop]: Abstraction has 4347 states and 5413 transitions. [2020-09-25 05:35:54,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:35:54,767 INFO L276 IsEmpty]: Start isEmpty. Operand 4347 states and 5413 transitions. [2020-09-25 05:35:54,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-25 05:35:54,784 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:54,784 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:35:54,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:35:54,785 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:54,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:54,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1612061781, now seen corresponding path program 1 times [2020-09-25 05:35:54,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:54,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189571415] [2020-09-25 05:35:54,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:54,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:54,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:54,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:54,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:55,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:55,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:55,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:59,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:59,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-09-25 05:35:59,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:35:59,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 05:35:59,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:59,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:59,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:59,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 05:35:59,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 05:35:59,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:59,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:59,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:59,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:59,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:59,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:35:59,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:59,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:35:59,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:59,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:59,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:59,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:59,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:59,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:59,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:35:59,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:59,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:59,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:59,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:35:59,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:59,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:35:59,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:59,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:59,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:59,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:59,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 05:35:59,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:59,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 05:35:59,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:00,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:00,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:00,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 05:36:00,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:00,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 05:36:00,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:00,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:00,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:36:00,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:36:00,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 05:36:00,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:00,193 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:36:00,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189571415] [2020-09-25 05:36:00,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:36:00,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:36:00,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978442254] [2020-09-25 05:36:00,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:36:00,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:36:00,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:36:00,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:36:00,197 INFO L87 Difference]: Start difference. First operand 4347 states and 5413 transitions. Second operand 7 states. [2020-09-25 05:36:03,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:36:03,655 INFO L93 Difference]: Finished difference Result 12336 states and 16539 transitions. [2020-09-25 05:36:03,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:36:03,656 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 213 [2020-09-25 05:36:03,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:36:03,705 INFO L225 Difference]: With dead ends: 12336 [2020-09-25 05:36:03,706 INFO L226 Difference]: Without dead ends: 8011 [2020-09-25 05:36:03,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:36:03,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8011 states. [2020-09-25 05:36:03,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8011 to 7832. [2020-09-25 05:36:03,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7832 states. [2020-09-25 05:36:03,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7832 states to 7832 states and 9891 transitions. [2020-09-25 05:36:03,977 INFO L78 Accepts]: Start accepts. Automaton has 7832 states and 9891 transitions. Word has length 213 [2020-09-25 05:36:03,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:36:03,978 INFO L479 AbstractCegarLoop]: Abstraction has 7832 states and 9891 transitions. [2020-09-25 05:36:03,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:36:03,978 INFO L276 IsEmpty]: Start isEmpty. Operand 7832 states and 9891 transitions. [2020-09-25 05:36:04,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-25 05:36:04,019 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:36:04,019 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:36:04,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:36:04,020 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:36:04,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:36:04,020 INFO L82 PathProgramCache]: Analyzing trace with hash 556027229, now seen corresponding path program 1 times [2020-09-25 05:36:04,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:36:04,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273169898] [2020-09-25 05:36:04,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:36:04,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:04,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:04,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:04,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:04,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking...