/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_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:36:32,308 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:36:32,313 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:36:32,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:36:32,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:36:32,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:36:32,370 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:36:32,374 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:36:32,377 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:36:32,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:36:32,381 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:36:32,382 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:36:32,382 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:36:32,385 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:36:32,388 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:36:32,389 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:36:32,391 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:36:32,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:36:32,394 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:36:32,402 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:36:32,405 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:36:32,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:36:32,407 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:36:32,408 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:36:32,421 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:36:32,421 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:36:32,421 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:36:32,427 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:36:32,428 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:36:32,429 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:36:32,429 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:36:32,433 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:36:32,434 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:36:32,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:36:32,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:36:32,438 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:36:32,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:36:32,440 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:36:32,441 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:36:32,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:36:32,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:36:32,444 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 05:36:32,488 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:36:32,488 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:36:32,490 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:36:32,491 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:36:32,491 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:36:32,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:36:32,492 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:36:32,492 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:36:32,492 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:36:32,492 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:36:32,493 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:36:32,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:36:32,493 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:36:32,494 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:36:32,494 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:36:32,494 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:36:32,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:36:32,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:36:32,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:36:32,495 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:36:32,495 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:36:32,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:36:32,496 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:36:32,496 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:36:32,496 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:36:32,496 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:36:32,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:36:32,497 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:36:32,497 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:36:32,497 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 05:36:32,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:36:32,976 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:36:32,981 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:36:32,983 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:36:32,983 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:36:32,985 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label34.c [2020-09-25 05:36:33,075 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b08ecdf55/1fa1f54d62964df0adf2742c909e606d/FLAGfbb7330cd [2020-09-25 05:36:33,713 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:36:33,714 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label34.c [2020-09-25 05:36:33,736 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b08ecdf55/1fa1f54d62964df0adf2742c909e606d/FLAGfbb7330cd [2020-09-25 05:36:33,952 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b08ecdf55/1fa1f54d62964df0adf2742c909e606d [2020-09-25 05:36:33,967 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:36:33,974 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:36:33,975 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:36:33,975 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:36:33,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:36:33,981 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:36:33" (1/1) ... [2020-09-25 05:36:33,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f80c2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:33, skipping insertion in model container [2020-09-25 05:36:33,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:36:33" (1/1) ... [2020-09-25 05:36:33,996 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:36:34,064 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:36:34,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:36:34,551 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:36:34,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:36:34,807 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:36:34,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:34 WrapperNode [2020-09-25 05:36:34,809 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:36:34,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:36:34,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:36:34,810 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:36:34,825 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:34" (1/1) ... [2020-09-25 05:36:34,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:34" (1/1) ... [2020-09-25 05:36:34,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:34" (1/1) ... [2020-09-25 05:36:34,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:34" (1/1) ... [2020-09-25 05:36:34,887 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:34" (1/1) ... [2020-09-25 05:36:34,923 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:34" (1/1) ... [2020-09-25 05:36:34,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:34" (1/1) ... [2020-09-25 05:36:34,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:36:34,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:36:34,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:36:34,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:36:34,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:34" (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 05:36:35,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:36:35,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:36:35,037 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:36:35,037 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:36:35,037 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:36:35,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:36:35,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:36:35,039 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:36:35,039 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:36:35,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:36:35,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:36:36,389 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:36:36,389 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:36:36,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:36:36 BoogieIcfgContainer [2020-09-25 05:36:36,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:36:36,401 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:36:36,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:36:36,405 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:36:36,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:36:33" (1/3) ... [2020-09-25 05:36:36,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c445f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:36:36, skipping insertion in model container [2020-09-25 05:36:36,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:36:34" (2/3) ... [2020-09-25 05:36:36,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c445f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:36:36, skipping insertion in model container [2020-09-25 05:36:36,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:36:36" (3/3) ... [2020-09-25 05:36:36,410 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label34.c [2020-09-25 05:36:36,422 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:36:36,433 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:36:36,456 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:36:36,497 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:36:36,498 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:36:36,498 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:36:36,499 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:36:36,499 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:36:36,499 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:36:36,499 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:36:36,499 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:36:36,537 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 05:36:36,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-09-25 05:36:36,561 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:36:36,563 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] [2020-09-25 05:36:36,563 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:36:36,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:36:36,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1247500167, now seen corresponding path program 1 times [2020-09-25 05:36:36,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:36:36,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11241220] [2020-09-25 05:36:36,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:36:36,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:36,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:37,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:37,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:37,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:38,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:39,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:39,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:40,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:41,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:41,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:41,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-25 05:36:41,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:36:41,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 05:36:41,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:41,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:41,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:36:41,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:36:41,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 05:36:41,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 05:36:42,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:36:42,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:42,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:42,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:42,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:36:42,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:42,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 05:36:42,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:42,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:42,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:36:42,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:42,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 05:36:42,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:42,242 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 05:36:42,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11241220] [2020-09-25 05:36:42,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:36:42,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:36:42,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052481146] [2020-09-25 05:36:42,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:36:42,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:36:42,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:36:42,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:36:42,290 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 05:36:44,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:36:44,719 INFO L93 Difference]: Finished difference Result 1248 states and 1696 transitions. [2020-09-25 05:36:44,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:36:44,722 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2020-09-25 05:36:44,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:36:44,747 INFO L225 Difference]: With dead ends: 1248 [2020-09-25 05:36:44,748 INFO L226 Difference]: Without dead ends: 670 [2020-09-25 05:36:44,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:36:44,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-09-25 05:36:44,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 621. [2020-09-25 05:36:44,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-09-25 05:36:44,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 723 transitions. [2020-09-25 05:36:44,862 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 723 transitions. Word has length 124 [2020-09-25 05:36:44,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:36:44,864 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 723 transitions. [2020-09-25 05:36:44,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:36:44,864 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 723 transitions. [2020-09-25 05:36:44,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 05:36:44,872 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:36:44,872 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:36:44,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:36:44,873 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:36:44,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:36:44,873 INFO L82 PathProgramCache]: Analyzing trace with hash 2003096754, now seen corresponding path program 1 times [2020-09-25 05:36:44,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:36:44,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237699703] [2020-09-25 05:36:44,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:36:44,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:44,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:45,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:45,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:46,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:47,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:47,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:48,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:49,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:49,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:49,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 05:36:49,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:36:49,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 05:36:49,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:49,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:49,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:36:49,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 05:36:49,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-25 05:36:49,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:50,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:36:50,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:50,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:50,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:50,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:36:50,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:50,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 05:36:50,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:50,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:50,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:36:50,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:50,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:36:50,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:50,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:36:50,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:50,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:50,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:50,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:36:50,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:50,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:36:50,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:50,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:50,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:36:50,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:50,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 05:36:50,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:50,226 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:36:50,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237699703] [2020-09-25 05:36:50,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:36:50,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:36:50,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750101739] [2020-09-25 05:36:50,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:36:50,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:36:50,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:36:50,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:36:50,231 INFO L87 Difference]: Start difference. First operand 621 states and 723 transitions. Second operand 5 states. [2020-09-25 05:36:52,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:36:52,220 INFO L93 Difference]: Finished difference Result 1533 states and 1846 transitions. [2020-09-25 05:36:52,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:36:52,222 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-09-25 05:36:52,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:36:52,229 INFO L225 Difference]: With dead ends: 1533 [2020-09-25 05:36:52,229 INFO L226 Difference]: Without dead ends: 934 [2020-09-25 05:36:52,232 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 05:36:52,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2020-09-25 05:36:52,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 772. [2020-09-25 05:36:52,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 772 states. [2020-09-25 05:36:52,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 953 transitions. [2020-09-25 05:36:52,275 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 953 transitions. Word has length 141 [2020-09-25 05:36:52,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:36:52,276 INFO L479 AbstractCegarLoop]: Abstraction has 772 states and 953 transitions. [2020-09-25 05:36:52,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:36:52,277 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 953 transitions. [2020-09-25 05:36:52,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 05:36:52,281 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:36:52,281 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:36:52,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:36:52,282 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:36:52,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:36:52,282 INFO L82 PathProgramCache]: Analyzing trace with hash 180693394, now seen corresponding path program 1 times [2020-09-25 05:36:52,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:36:52,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90885183] [2020-09-25 05:36:52,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:36:52,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:52,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:52,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:53,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:53,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:53,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:53,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:54,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:54,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:57,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:57,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 05:36:57,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:36:57,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 05:36:57,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:57,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:57,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:36:57,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 05:36:57,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 05:36:57,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:57,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:36:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:57,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:57,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:57,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:36:57,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:57,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 05:36:57,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:57,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:57,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:36:57,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:57,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:36:57,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 05:36:57,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:36:57,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:57,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:57,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:57,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 05:36:57,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:57,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 05:36:57,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:57,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:57,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:36:57,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:57,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 05:36:57,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:57,696 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:36:57,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90885183] [2020-09-25 05:36:57,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:36:57,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:36:57,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464890927] [2020-09-25 05:36:57,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:36:57,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:36:57,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:36:57,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:36:57,701 INFO L87 Difference]: Start difference. First operand 772 states and 953 transitions. Second operand 5 states. [2020-09-25 05:36:59,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:36:59,460 INFO L93 Difference]: Finished difference Result 1986 states and 2561 transitions. [2020-09-25 05:36:59,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:36:59,461 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-09-25 05:36:59,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:36:59,476 INFO L225 Difference]: With dead ends: 1986 [2020-09-25 05:36:59,477 INFO L226 Difference]: Without dead ends: 1236 [2020-09-25 05:36:59,480 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 05:36:59,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2020-09-25 05:36:59,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 1226. [2020-09-25 05:36:59,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1226 states. [2020-09-25 05:36:59,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1541 transitions. [2020-09-25 05:36:59,543 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 1541 transitions. Word has length 150 [2020-09-25 05:36:59,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:36:59,544 INFO L479 AbstractCegarLoop]: Abstraction has 1226 states and 1541 transitions. [2020-09-25 05:36:59,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:36:59,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 1541 transitions. [2020-09-25 05:36:59,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 05:36:59,550 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:36:59,551 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:36:59,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:36:59,551 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:36:59,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:36:59,552 INFO L82 PathProgramCache]: Analyzing trace with hash 253863597, now seen corresponding path program 1 times [2020-09-25 05:36:59,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:36:59,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887301385] [2020-09-25 05:36:59,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:36:59,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:59,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:59,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:59,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:00,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:00,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:01,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:01,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:01,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:04,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:04,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-25 05:37:04,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:37:04,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 05:37:04,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:04,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:04,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:04,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-09-25 05:37:04,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-25 05:37:04,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 05:37:04,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:04,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:04,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:04,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:04,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:04,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:04,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:37:04,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:04,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:04,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:04,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:04,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:04,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:04,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:04,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:04,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:04,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:04,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:37:04,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:04,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:37:04,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:04,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:04,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:04,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:04,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:04,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:04,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 05:37:04,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:04,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:04,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:04,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 05:37:04,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:04,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 05:37:04,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:04,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:04,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:04,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:04,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 05:37:04,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:05,038 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 05:37:05,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887301385] [2020-09-25 05:37:05,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:37:05,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:37:05,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170160401] [2020-09-25 05:37:05,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:37:05,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:05,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:37:05,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:37:05,045 INFO L87 Difference]: Start difference. First operand 1226 states and 1541 transitions. Second operand 5 states. [2020-09-25 05:37:07,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:07,481 INFO L93 Difference]: Finished difference Result 3346 states and 4362 transitions. [2020-09-25 05:37:07,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:37:07,483 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-09-25 05:37:07,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:07,501 INFO L225 Difference]: With dead ends: 3346 [2020-09-25 05:37:07,502 INFO L226 Difference]: Without dead ends: 2142 [2020-09-25 05:37:07,508 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 05:37:07,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2020-09-25 05:37:07,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 1530. [2020-09-25 05:37:07,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1530 states. [2020-09-25 05:37:07,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 1894 transitions. [2020-09-25 05:37:07,585 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 1894 transitions. Word has length 175 [2020-09-25 05:37:07,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:07,586 INFO L479 AbstractCegarLoop]: Abstraction has 1530 states and 1894 transitions. [2020-09-25 05:37:07,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:37:07,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 1894 transitions. [2020-09-25 05:37:07,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 05:37:07,594 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:07,595 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:37:07,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:37:07,596 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:07,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:07,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1487586036, now seen corresponding path program 1 times [2020-09-25 05:37:07,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:07,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665543036] [2020-09-25 05:37:07,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:07,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:07,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:08,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:08,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-25 05:37:08,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:37:08,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 958 [2020-09-25 05:37:08,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:08,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:08,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:37:08,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 05:37:08,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 05:37:08,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 05:37:08,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:08,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:08,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:08,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:08,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:08,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 05:37:08,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:08,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:08,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:08,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:08,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:37:08,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 05:37:08,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:08,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:08,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:08,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:08,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 05:37:08,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:08,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-09-25 05:37:08,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:08,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:08,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:08,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:37:08,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 05:37:08,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:09,025 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:37:09,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665543036] [2020-09-25 05:37:09,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:37:09,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 05:37:09,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553069400] [2020-09-25 05:37:09,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:37:09,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:09,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:37:09,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:37:09,029 INFO L87 Difference]: Start difference. First operand 1530 states and 1894 transitions. Second operand 7 states. [2020-09-25 05:37:10,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:10,841 INFO L93 Difference]: Finished difference Result 3095 states and 3906 transitions. [2020-09-25 05:37:10,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:37:10,842 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 193 [2020-09-25 05:37:10,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:10,855 INFO L225 Difference]: With dead ends: 3095 [2020-09-25 05:37:10,855 INFO L226 Difference]: Without dead ends: 1587 [2020-09-25 05:37:10,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:37:10,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1587 states. [2020-09-25 05:37:10,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1587 to 1531. [2020-09-25 05:37:10,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1531 states. [2020-09-25 05:37:10,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 1797 transitions. [2020-09-25 05:37:10,929 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 1797 transitions. Word has length 193 [2020-09-25 05:37:10,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:10,931 INFO L479 AbstractCegarLoop]: Abstraction has 1531 states and 1797 transitions. [2020-09-25 05:37:10,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:37:10,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 1797 transitions. [2020-09-25 05:37:10,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-09-25 05:37:10,938 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:10,939 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:37:10,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:37:10,939 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:10,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:10,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1088706783, now seen corresponding path program 1 times [2020-09-25 05:37:10,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:10,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094820984] [2020-09-25 05:37:10,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:10,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:10,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:11,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:11,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:11,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:11,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:15,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:15,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-09-25 05:37:15,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:37:15,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4243 [2020-09-25 05:37:15,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:15,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:15,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:15,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 05:37:15,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 05:37:15,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:37:15,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:15,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:15,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:15,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:37:15,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:15,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:37:15,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:15,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:15,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:15,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:15,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:15,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:15,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:37:15,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:15,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:15,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:15,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 05:37:15,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:15,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:37:15,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:15,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:15,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:15,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:15,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:15,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:15,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 05:37:15,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:15,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:15,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:15,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:37:15,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:15,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:37:15,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:15,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:15,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:15,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:15,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 05:37:15,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:15,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 05:37:15,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:15,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:15,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:15,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 05:37:15,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:15,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-25 05:37:15,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:15,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:15,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:15,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:37:15,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 05:37:15,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:15,659 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 05:37:15,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094820984] [2020-09-25 05:37:15,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:37:15,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:37:15,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851112754] [2020-09-25 05:37:15,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:37:15,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:15,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:37:15,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:37:15,663 INFO L87 Difference]: Start difference. First operand 1531 states and 1797 transitions. Second operand 7 states. [2020-09-25 05:37:17,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:17,721 INFO L93 Difference]: Finished difference Result 3356 states and 3926 transitions. [2020-09-25 05:37:17,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:37:17,722 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 228 [2020-09-25 05:37:17,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:17,729 INFO L225 Difference]: With dead ends: 3356 [2020-09-25 05:37:17,730 INFO L226 Difference]: Without dead ends: 1482 [2020-09-25 05:37:17,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:37:17,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2020-09-25 05:37:17,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1470. [2020-09-25 05:37:17,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1470 states. [2020-09-25 05:37:17,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 1699 transitions. [2020-09-25 05:37:17,780 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 1699 transitions. Word has length 228 [2020-09-25 05:37:17,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:17,781 INFO L479 AbstractCegarLoop]: Abstraction has 1470 states and 1699 transitions. [2020-09-25 05:37:17,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:37:17,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 1699 transitions. [2020-09-25 05:37:17,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-09-25 05:37:17,787 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:17,788 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 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] [2020-09-25 05:37:17,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:37:17,789 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:17,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:17,789 INFO L82 PathProgramCache]: Analyzing trace with hash -389374120, now seen corresponding path program 1 times [2020-09-25 05:37:17,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:17,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130552644] [2020-09-25 05:37:17,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:17,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:17,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:17,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:18,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:18,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:18,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:19,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:19,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking...