/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=1.0 --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/Problem10_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:04:44,308 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:04:44,313 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:04:44,360 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:04:44,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:04:44,361 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:04:44,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:04:44,364 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:04:44,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:04:44,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:04:44,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:04:44,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:04:44,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:04:44,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:04:44,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:04:44,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:04:44,375 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:04:44,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:04:44,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:04:44,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:04:44,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:04:44,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:04:44,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:04:44,385 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:04:44,388 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:04:44,390 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:04:44,390 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:04:44,391 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:04:44,392 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:04:44,393 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:04:44,393 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:04:44,394 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:04:44,395 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:04:44,396 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:04:44,397 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:04:44,398 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:04:44,398 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:04:44,399 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:04:44,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:04:44,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:04:44,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:04:44,402 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 09:04:44,428 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:04:44,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:04:44,430 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:04:44,430 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:04:44,431 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:04:44,431 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:04:44,431 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:04:44,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:04:44,432 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:04:44,432 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:04:44,432 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:04:44,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:04:44,432 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:04:44,433 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:04:44,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:04:44,433 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:04:44,433 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:04:44,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:04:44,434 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:04:44,434 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:04:44,434 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:04:44,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:04:44,435 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:04:44,435 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:04:44,435 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:04:44,435 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:04:44,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:04:44,436 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:04:44,436 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:04:44,436 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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-09-25 09:04:44,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:04:44,900 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:04:44,904 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:04:44,906 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:04:44,907 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:04:44,908 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label06.c [2020-09-25 09:04:44,995 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08faf6ce3/b964ae2110db4801bfd2b65f474a4d2a/FLAGe58c9a8ed [2020-09-25 09:04:45,642 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:04:45,643 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label06.c [2020-09-25 09:04:45,666 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08faf6ce3/b964ae2110db4801bfd2b65f474a4d2a/FLAGe58c9a8ed [2020-09-25 09:04:45,870 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08faf6ce3/b964ae2110db4801bfd2b65f474a4d2a [2020-09-25 09:04:45,885 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:04:45,891 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:04:45,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:04:45,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:04:45,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:04:45,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:04:45" (1/1) ... [2020-09-25 09:04:45,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41395291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:45, skipping insertion in model container [2020-09-25 09:04:45,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:04:45" (1/1) ... [2020-09-25 09:04:45,919 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:04:45,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:04:46,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:04:46,539 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:04:46,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:04:46,781 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:04:46,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:46 WrapperNode [2020-09-25 09:04:46,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:04:46,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:04:46,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:04:46,783 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:04:46,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:46" (1/1) ... [2020-09-25 09:04:46,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:46" (1/1) ... [2020-09-25 09:04:46,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:46" (1/1) ... [2020-09-25 09:04:46,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:46" (1/1) ... [2020-09-25 09:04:46,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:46" (1/1) ... [2020-09-25 09:04:46,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:46" (1/1) ... [2020-09-25 09:04:46,891 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:46" (1/1) ... [2020-09-25 09:04:46,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:04:46,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:04:46,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:04:46,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:04:46,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:46" (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 09:04:47,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:04:47,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:04:47,008 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:04:47,008 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:04:47,008 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:04:47,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:04:47,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:04:47,010 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:04:47,010 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:04:47,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:04:47,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:04:48,458 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:04:48,459 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:04:48,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:04:48 BoogieIcfgContainer [2020-09-25 09:04:48,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:04:48,470 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:04:48,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:04:48,475 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:04:48,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:04:45" (1/3) ... [2020-09-25 09:04:48,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a715b42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:04:48, skipping insertion in model container [2020-09-25 09:04:48,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:04:46" (2/3) ... [2020-09-25 09:04:48,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a715b42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:04:48, skipping insertion in model container [2020-09-25 09:04:48,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:04:48" (3/3) ... [2020-09-25 09:04:48,480 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label06.c [2020-09-25 09:04:48,494 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:04:48,507 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:04:48,532 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:04:48,568 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:04:48,569 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:04:48,569 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:04:48,569 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:04:48,569 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:04:48,569 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:04:48,570 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:04:48,570 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:04:48,602 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 09:04:48,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 09:04:48,612 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:48,613 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] [2020-09-25 09:04:48,614 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:48,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:48,622 INFO L82 PathProgramCache]: Analyzing trace with hash -200720489, now seen corresponding path program 1 times [2020-09-25 09:04:48,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:48,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484036615] [2020-09-25 09:04:48,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:48,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:48,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:49,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:49,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:49,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 09:04:49,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:04:49,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 893 [2020-09-25 09:04:49,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:49,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:49,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:04:49,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 09:04:49,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 09:04:49,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:04:49,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:49,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:49,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:49,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:49,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:04:49,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:49,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 09:04:49,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:49,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:49,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:49,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:49,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:04:49,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:49,871 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 09:04:49,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484036615] [2020-09-25 09:04:49,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:04:49,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 09:04:49,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414473380] [2020-09-25 09:04:49,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:04:49,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:49,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:04:49,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:04:49,906 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 09:04:52,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:52,923 INFO L93 Difference]: Finished difference Result 1352 states and 1911 transitions. [2020-09-25 09:04:52,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:04:52,927 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-09-25 09:04:52,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:52,959 INFO L225 Difference]: With dead ends: 1352 [2020-09-25 09:04:52,959 INFO L226 Difference]: Without dead ends: 806 [2020-09-25 09:04:52,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:04:53,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2020-09-25 09:04:53,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 727. [2020-09-25 09:04:53,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-09-25 09:04:53,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 896 transitions. [2020-09-25 09:04:53,115 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 896 transitions. Word has length 43 [2020-09-25 09:04:53,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:53,116 INFO L479 AbstractCegarLoop]: Abstraction has 727 states and 896 transitions. [2020-09-25 09:04:53,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:04:53,116 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 896 transitions. [2020-09-25 09:04:53,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-09-25 09:04:53,132 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:53,133 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:53,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:04:53,133 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:53,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:53,134 INFO L82 PathProgramCache]: Analyzing trace with hash -819138438, now seen corresponding path program 1 times [2020-09-25 09:04:53,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:53,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405487112] [2020-09-25 09:04:53,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:53,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:53,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:53,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:53,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:54,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:54,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:54,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:56,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:56,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 09:04:56,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:04:56,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3199 [2020-09-25 09:04:56,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:56,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:56,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:04:56,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:04:56,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 09:04:56,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:56,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:56,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:56,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:56,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:04:56,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:56,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 09:04:56,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:56,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:56,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:56,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:56,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:04:56,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:56,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:04:56,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:56,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:56,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:56,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:56,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 09:04:56,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:04:56,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-09-25 09:04:56,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:56,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:56,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:56,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:04:56,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 09:04:56,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:56,843 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:04:56,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405487112] [2020-09-25 09:04:56,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:56,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:04:56,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106215175] [2020-09-25 09:04:56,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:04:56,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:56,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:04:56,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:04:56,848 INFO L87 Difference]: Start difference. First operand 727 states and 896 transitions. Second operand 6 states. [2020-09-25 09:04:58,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:58,623 INFO L93 Difference]: Finished difference Result 1057 states and 1392 transitions. [2020-09-25 09:04:58,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:04:58,624 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2020-09-25 09:04:58,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:58,636 INFO L225 Difference]: With dead ends: 1057 [2020-09-25 09:04:58,636 INFO L226 Difference]: Without dead ends: 1055 [2020-09-25 09:04:58,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:04:58,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2020-09-25 09:04:58,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 879. [2020-09-25 09:04:58,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 879 states. [2020-09-25 09:04:58,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1129 transitions. [2020-09-25 09:04:58,708 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1129 transitions. Word has length 126 [2020-09-25 09:04:58,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:58,711 INFO L479 AbstractCegarLoop]: Abstraction has 879 states and 1129 transitions. [2020-09-25 09:04:58,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:04:58,712 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1129 transitions. [2020-09-25 09:04:58,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 09:04:58,725 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:58,726 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:58,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:04:58,727 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:58,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:58,727 INFO L82 PathProgramCache]: Analyzing trace with hash -203251606, now seen corresponding path program 1 times [2020-09-25 09:04:58,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:58,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030617255] [2020-09-25 09:04:58,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:58,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:58,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:59,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:59,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:59,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:01,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:01,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 09:05:01,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:05:01,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2305 [2020-09-25 09:05:01,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:01,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:01,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:05:01,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 09:05:01,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 09:05:01,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:01,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:01,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:01,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:01,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:01,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:01,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:01,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 09:05:01,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:01,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:01,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:05:01,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:01,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:05:01,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:01,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:01,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:01,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:01,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:05:01,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:01,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-09-25 09:05:01,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:01,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:01,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:05:01,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:01,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 09:05:01,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:01,606 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:05:01,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030617255] [2020-09-25 09:05:01,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:01,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:05:01,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724312091] [2020-09-25 09:05:01,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:05:01,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:01,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:05:01,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:05:01,609 INFO L87 Difference]: Start difference. First operand 879 states and 1129 transitions. Second operand 8 states. [2020-09-25 09:05:05,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:05,684 INFO L93 Difference]: Finished difference Result 2798 states and 3833 transitions. [2020-09-25 09:05:05,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:05:05,685 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 132 [2020-09-25 09:05:05,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:05,696 INFO L225 Difference]: With dead ends: 2798 [2020-09-25 09:05:05,697 INFO L226 Difference]: Without dead ends: 2052 [2020-09-25 09:05:05,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:05:05,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2052 states. [2020-09-25 09:05:05,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2052 to 2011. [2020-09-25 09:05:05,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2011 states. [2020-09-25 09:05:05,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2011 states to 2011 states and 2658 transitions. [2020-09-25 09:05:05,768 INFO L78 Accepts]: Start accepts. Automaton has 2011 states and 2658 transitions. Word has length 132 [2020-09-25 09:05:05,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:05,769 INFO L479 AbstractCegarLoop]: Abstraction has 2011 states and 2658 transitions. [2020-09-25 09:05:05,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:05:05,769 INFO L276 IsEmpty]: Start isEmpty. Operand 2011 states and 2658 transitions. [2020-09-25 09:05:05,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 09:05:05,772 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:05,772 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:05,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:05:05,773 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:05,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:05,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1010276362, now seen corresponding path program 1 times [2020-09-25 09:05:05,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:05,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666938] [2020-09-25 09:05:05,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:05,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:05,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:06,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:06,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:06,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:07,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:08,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:08,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:10,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:10,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-25 09:05:10,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:05:10,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4879 [2020-09-25 09:05:10,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:10,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:10,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:05:10,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 09:05:10,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 09:05:10,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:10,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:10,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:10,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:10,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:10,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:10,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:10,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 09:05:10,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:10,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:10,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:10,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:10,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:05:10,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:10,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:10,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:10,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:10,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:10,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 09:05:10,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:10,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-25 09:05:10,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:10,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:10,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:10,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:05:10,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 09:05:10,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:11,072 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:05:11,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666938] [2020-09-25 09:05:11,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:05:11,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:05:11,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934545083] [2020-09-25 09:05:11,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:05:11,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:11,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:05:11,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:05:11,077 INFO L87 Difference]: Start difference. First operand 2011 states and 2658 transitions. Second operand 7 states. [2020-09-25 09:05:13,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:13,518 INFO L93 Difference]: Finished difference Result 4922 states and 6946 transitions. [2020-09-25 09:05:13,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:05:13,519 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 151 [2020-09-25 09:05:13,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:13,540 INFO L225 Difference]: With dead ends: 4922 [2020-09-25 09:05:13,541 INFO L226 Difference]: Without dead ends: 3076 [2020-09-25 09:05:13,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:05:13,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3076 states. [2020-09-25 09:05:13,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3076 to 2672. [2020-09-25 09:05:13,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2672 states. [2020-09-25 09:05:13,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2672 states to 2672 states and 3472 transitions. [2020-09-25 09:05:13,662 INFO L78 Accepts]: Start accepts. Automaton has 2672 states and 3472 transitions. Word has length 151 [2020-09-25 09:05:13,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:13,663 INFO L479 AbstractCegarLoop]: Abstraction has 2672 states and 3472 transitions. [2020-09-25 09:05:13,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:05:13,663 INFO L276 IsEmpty]: Start isEmpty. Operand 2672 states and 3472 transitions. [2020-09-25 09:05:13,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 09:05:13,666 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:13,667 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:13,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:05:13,667 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:13,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:13,667 INFO L82 PathProgramCache]: Analyzing trace with hash -554529762, now seen corresponding path program 1 times [2020-09-25 09:05:13,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:13,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024339575] [2020-09-25 09:05:13,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:13,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:13,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:13,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:14,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:15,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:17,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:17,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 09:05:17,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:05:17,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3926 [2020-09-25 09:05:17,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:17,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:17,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:05:17,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:05:17,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-09-25 09:05:17,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:05:17,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:17,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:17,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:17,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:17,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:17,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 09:05:17,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:17,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:17,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:05:17,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:17,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:05:17,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:17,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:17,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:17,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:18,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:18,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:18,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 09:05:18,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:18,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 332 [2020-09-25 09:05:18,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:18,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:18,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:05:18,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:18,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 09:05:18,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:18,328 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:05:18,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024339575] [2020-09-25 09:05:18,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:18,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:05:18,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891420329] [2020-09-25 09:05:18,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:05:18,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:18,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:05:18,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:05:18,336 INFO L87 Difference]: Start difference. First operand 2672 states and 3472 transitions. Second operand 10 states. [2020-09-25 09:05:22,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:22,410 INFO L93 Difference]: Finished difference Result 6372 states and 8572 transitions. [2020-09-25 09:05:22,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 09:05:22,412 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 175 [2020-09-25 09:05:22,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:22,431 INFO L225 Difference]: With dead ends: 6372 [2020-09-25 09:05:22,431 INFO L226 Difference]: Without dead ends: 3809 [2020-09-25 09:05:22,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2020-09-25 09:05:22,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3809 states. [2020-09-25 09:05:22,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3809 to 3467. [2020-09-25 09:05:22,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3467 states. [2020-09-25 09:05:22,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3467 states to 3467 states and 4461 transitions. [2020-09-25 09:05:22,551 INFO L78 Accepts]: Start accepts. Automaton has 3467 states and 4461 transitions. Word has length 175 [2020-09-25 09:05:22,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:22,551 INFO L479 AbstractCegarLoop]: Abstraction has 3467 states and 4461 transitions. [2020-09-25 09:05:22,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:05:22,552 INFO L276 IsEmpty]: Start isEmpty. Operand 3467 states and 4461 transitions. [2020-09-25 09:05:22,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-25 09:05:22,556 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:22,557 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-09-25 09:05:22,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:05:22,557 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:22,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:22,558 INFO L82 PathProgramCache]: Analyzing trace with hash 915514958, now seen corresponding path program 1 times [2020-09-25 09:05:22,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:22,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656815515] [2020-09-25 09:05:22,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:22,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:22,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:22,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:22,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:23,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:23,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:23,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:25,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:25,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:25,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:25,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:26,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:26,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:27,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:27,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-25 09:05:27,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 09:05:27,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 09:05:27,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:27,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:27,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:05:27,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:05:27,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-09-25 09:05:27,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:27,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:27,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:27,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:27,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:27,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:27,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:27,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 09:05:27,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:27,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:27,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:05:27,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:27,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:05:27,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:27,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:27,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:27,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:27,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:27,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:27,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 09:05:27,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:27,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-25 09:05:27,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:27,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:27,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:27,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:27,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 09:05:27,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:27,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 09:05:28,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:28,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:28,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:28,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:28,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 09:05:28,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:28,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-09-25 09:05:28,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:28,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:28,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:05:28,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:28,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 09:05:28,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:05:28,610 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-25 09:05:28,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [656815515] [2020-09-25 09:05:28,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:28,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:05:28,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265734151] [2020-09-25 09:05:28,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:05:28,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:28,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:05:28,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:05:28,614 INFO L87 Difference]: Start difference. First operand 3467 states and 4461 transitions. Second operand 10 states. [2020-09-25 09:05:31,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:31,734 INFO L93 Difference]: Finished difference Result 8524 states and 11499 transitions. [2020-09-25 09:05:31,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:05:31,735 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 205 [2020-09-25 09:05:31,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:31,759 INFO L225 Difference]: With dead ends: 8524 [2020-09-25 09:05:31,759 INFO L226 Difference]: Without dead ends: 5184 [2020-09-25 09:05:31,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 09:05:31,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5184 states. [2020-09-25 09:05:31,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5184 to 4835. [2020-09-25 09:05:31,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4835 states. [2020-09-25 09:05:31,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4835 states to 4835 states and 6154 transitions. [2020-09-25 09:05:31,909 INFO L78 Accepts]: Start accepts. Automaton has 4835 states and 6154 transitions. Word has length 205 [2020-09-25 09:05:31,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:31,910 INFO L479 AbstractCegarLoop]: Abstraction has 4835 states and 6154 transitions. [2020-09-25 09:05:31,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:05:31,910 INFO L276 IsEmpty]: Start isEmpty. Operand 4835 states and 6154 transitions. [2020-09-25 09:05:31,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-25 09:05:31,916 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:31,916 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-09-25 09:05:31,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 09:05:31,917 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:31,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:31,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1819236263, now seen corresponding path program 1 times [2020-09-25 09:05:31,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:31,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436271494] [2020-09-25 09:05:31,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:31,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:32,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:32,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:32,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:33,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:33,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking...