/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/Problem02_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:03:38,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:03:38,260 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:03:38,286 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:03:38,287 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:03:38,288 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:03:38,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:03:38,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:03:38,294 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:03:38,295 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:03:38,296 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:03:38,297 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:03:38,297 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:03:38,299 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:03:38,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:03:38,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:03:38,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:03:38,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:03:38,305 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:03:38,307 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:03:38,309 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:03:38,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:03:38,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:03:38,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:03:38,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:03:38,316 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:03:38,316 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:03:38,317 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:03:38,318 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:03:38,319 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:03:38,319 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:03:38,320 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:03:38,321 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:03:38,322 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:03:38,324 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:03:38,324 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:03:38,325 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:03:38,325 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:03:38,325 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:03:38,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:03:38,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:03:38,328 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 09:03:38,355 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:03:38,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:03:38,356 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:03:38,357 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:03:38,357 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:03:38,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:03:38,357 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:03:38,358 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:03:38,358 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:03:38,358 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:03:38,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:03:38,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:03:38,359 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:03:38,359 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:03:38,359 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:03:38,359 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:03:38,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:03:38,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:03:38,360 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:03:38,360 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:03:38,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:03:38,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:03:38,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:03:38,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:03:38,361 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:03:38,361 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:03:38,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:03:38,362 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:03:38,362 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:03:38,362 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 09:03:38,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:03:38,907 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:03:38,912 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:03:38,914 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:03:38,916 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:03:38,917 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label44.c [2020-09-25 09:03:39,012 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4790d44ff/34b03fcee73b43a488f48bbb5e9045d8/FLAGd1487946c [2020-09-25 09:03:39,723 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:03:39,724 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label44.c [2020-09-25 09:03:39,742 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4790d44ff/34b03fcee73b43a488f48bbb5e9045d8/FLAGd1487946c [2020-09-25 09:03:39,915 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4790d44ff/34b03fcee73b43a488f48bbb5e9045d8 [2020-09-25 09:03:39,931 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:03:39,937 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:03:39,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:03:39,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:03:39,944 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:03:39,945 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:03:39" (1/1) ... [2020-09-25 09:03:39,950 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:39, skipping insertion in model container [2020-09-25 09:03:39,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:03:39" (1/1) ... [2020-09-25 09:03:39,961 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:03:40,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:03:40,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:03:40,576 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:03:40,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:03:40,866 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:03:40,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:40 WrapperNode [2020-09-25 09:03:40,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:03:40,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:03:40,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:03:40,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:03:40,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:40" (1/1) ... [2020-09-25 09:03:40,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:40" (1/1) ... [2020-09-25 09:03:40,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:40" (1/1) ... [2020-09-25 09:03:40,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:40" (1/1) ... [2020-09-25 09:03:40,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:40" (1/1) ... [2020-09-25 09:03:41,018 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:40" (1/1) ... [2020-09-25 09:03:41,027 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:40" (1/1) ... [2020-09-25 09:03:41,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:03:41,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:03:41,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:03:41,044 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:03:41,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:40" (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 09:03:41,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:03:41,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:03:41,135 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:03:41,135 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:03:41,135 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:03:41,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:03:41,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:03:41,136 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:03:41,136 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:03:41,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:03:41,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:03:42,544 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:03:42,544 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:03:42,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:03:42 BoogieIcfgContainer [2020-09-25 09:03:42,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:03:42,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:03:42,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:03:42,561 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:03:42,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:03:39" (1/3) ... [2020-09-25 09:03:42,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c64d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:03:42, skipping insertion in model container [2020-09-25 09:03:42,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:40" (2/3) ... [2020-09-25 09:03:42,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c64d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:03:42, skipping insertion in model container [2020-09-25 09:03:42,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:03:42" (3/3) ... [2020-09-25 09:03:42,572 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label44.c [2020-09-25 09:03:42,584 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:03:42,597 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:03:42,622 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:03:42,664 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:03:42,664 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:03:42,664 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:03:42,665 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:03:42,665 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:03:42,665 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:03:42,665 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:03:42,665 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:03:42,701 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 09:03:42,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-25 09:03:42,720 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:03:42,722 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] [2020-09-25 09:03:42,722 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:03:42,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:03:42,731 INFO L82 PathProgramCache]: Analyzing trace with hash -118135375, now seen corresponding path program 1 times [2020-09-25 09:03:42,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:03:42,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400466314] [2020-09-25 09:03:42,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:03:43,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:43,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:43,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:44,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:45,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:46,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:46,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:48,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:48,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-25 09:03:48,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:03:48,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 09:03:48,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:48,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:48,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:03:48,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 09:03:48,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 09:03:48,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 09:03:48,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:03:48,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:48,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:48,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:48,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:03:48,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:48,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 09:03:48,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:48,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:48,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:03:48,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:48,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 09:03:48,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:48,321 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 09:03:48,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400466314] [2020-09-25 09:03:48,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:03:48,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:03:48,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300572136] [2020-09-25 09:03:48,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:03:48,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:03:48,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:03:48,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:03:48,357 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 09:03:50,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:03:50,670 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 09:03:50,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:03:50,673 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2020-09-25 09:03:50,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:03:50,716 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 09:03:50,717 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 09:03:50,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:03:50,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 09:03:50,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 09:03:50,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 09:03:50,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 09:03:50,902 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 114 [2020-09-25 09:03:50,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:03:50,903 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 09:03:50,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:03:50,903 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 09:03:50,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 09:03:50,910 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:03:50,911 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:03:50,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:03:50,911 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:03:50,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:03:50,912 INFO L82 PathProgramCache]: Analyzing trace with hash 644121349, now seen corresponding path program 1 times [2020-09-25 09:03:50,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:03:50,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948904814] [2020-09-25 09:03:50,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:03:50,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:50,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:51,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:52,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:52,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:53,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:55,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:55,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:55,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 09:03:55,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:03:55,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 09:03:55,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:55,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:55,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:03:55,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 09:03:55,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 09:03:55,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:56,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:03:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:56,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:56,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:56,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:03:56,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:56,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 09:03:56,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:56,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:56,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:03:56,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:56,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:03:56,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:56,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:03:56,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:56,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:56,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:56,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:03:56,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:56,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 09:03:56,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:56,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:56,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:03:56,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:56,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:03:56,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:56,339 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:03:56,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948904814] [2020-09-25 09:03:56,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:03:56,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:03:56,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905998698] [2020-09-25 09:03:56,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:03:56,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:03:56,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:03:56,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:03:56,344 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 8 states. [2020-09-25 09:04:00,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:00,864 INFO L93 Difference]: Finished difference Result 2345 states and 3150 transitions. [2020-09-25 09:04:00,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:04:00,865 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 132 [2020-09-25 09:04:00,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:00,876 INFO L225 Difference]: With dead ends: 2345 [2020-09-25 09:04:00,877 INFO L226 Difference]: Without dead ends: 1479 [2020-09-25 09:04:00,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:04:00,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2020-09-25 09:04:00,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 1430. [2020-09-25 09:04:00,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1430 states. [2020-09-25 09:04:00,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 1688 transitions. [2020-09-25 09:04:00,946 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 1688 transitions. Word has length 132 [2020-09-25 09:04:00,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:00,947 INFO L479 AbstractCegarLoop]: Abstraction has 1430 states and 1688 transitions. [2020-09-25 09:04:00,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:04:00,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 1688 transitions. [2020-09-25 09:04:00,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 09:04:00,958 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:00,958 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 09:04:00,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:04:00,959 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:00,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:00,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1328421603, now seen corresponding path program 1 times [2020-09-25 09:04:00,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:00,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260939612] [2020-09-25 09:04:00,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:00,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:01,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:01,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:01,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:01,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:01,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:02,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:05,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:05,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 09:04:05,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:04:05,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4173 [2020-09-25 09:04:05,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:05,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:05,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:04:05,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:04:05,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 09:04:05,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:05,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:05,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:05,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:05,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:05,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:05,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:05,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 09:04:05,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:05,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:05,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:05,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:05,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 09:04:05,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:05,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:04:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:05,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:05,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:05,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:05,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:04:05,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:04:05,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 09:04:05,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:05,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:05,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:05,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:04:05,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:04:05,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:05,569 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:04:05,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260939612] [2020-09-25 09:04:05,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:05,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:04:05,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879441229] [2020-09-25 09:04:05,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:04:05,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:05,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:04:05,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:04:05,575 INFO L87 Difference]: Start difference. First operand 1430 states and 1688 transitions. Second operand 6 states. [2020-09-25 09:04:07,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:07,633 INFO L93 Difference]: Finished difference Result 3515 states and 4311 transitions. [2020-09-25 09:04:07,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:04:07,634 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2020-09-25 09:04:07,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:07,645 INFO L225 Difference]: With dead ends: 3515 [2020-09-25 09:04:07,645 INFO L226 Difference]: Without dead ends: 2107 [2020-09-25 09:04:07,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:04:07,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2107 states. [2020-09-25 09:04:07,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2107 to 2050. [2020-09-25 09:04:07,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2050 states. [2020-09-25 09:04:07,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2050 states to 2050 states and 2372 transitions. [2020-09-25 09:04:07,729 INFO L78 Accepts]: Start accepts. Automaton has 2050 states and 2372 transitions. Word has length 135 [2020-09-25 09:04:07,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:07,729 INFO L479 AbstractCegarLoop]: Abstraction has 2050 states and 2372 transitions. [2020-09-25 09:04:07,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:04:07,730 INFO L276 IsEmpty]: Start isEmpty. Operand 2050 states and 2372 transitions. [2020-09-25 09:04:07,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-25 09:04:07,740 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:07,740 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 09:04:07,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:04:07,740 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:07,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:07,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1278121653, now seen corresponding path program 1 times [2020-09-25 09:04:07,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:07,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664278454] [2020-09-25 09:04:07,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:07,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:07,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:07,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:07,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:08,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:12,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:12,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 09:04:12,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:04:12,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 09:04:12,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:12,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:12,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:04:12,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 09:04:12,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 09:04:12,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:12,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:12,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:12,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:12,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:12,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:12,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:12,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 09:04:12,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:12,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:12,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:12,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:12,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:04:12,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:12,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:04:12,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:12,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:13,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:13,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 09:04:13,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:13,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 09:04:13,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:13,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:13,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:13,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:04:13,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 09:04:13,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:13,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 09:04:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:13,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:13,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:13,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:04:13,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:13,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 09:04:13,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:13,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:13,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:04:13,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 09:04:13,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:04:13,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:13,116 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 09:04:13,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664278454] [2020-09-25 09:04:13,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:13,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:04:13,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621391956] [2020-09-25 09:04:13,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:04:13,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:13,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:04:13,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:04:13,123 INFO L87 Difference]: Start difference. First operand 2050 states and 2372 transitions. Second operand 7 states. [2020-09-25 09:04:15,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:15,511 INFO L93 Difference]: Finished difference Result 4812 states and 5761 transitions. [2020-09-25 09:04:15,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:04:15,512 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 155 [2020-09-25 09:04:15,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:15,534 INFO L225 Difference]: With dead ends: 4812 [2020-09-25 09:04:15,534 INFO L226 Difference]: Without dead ends: 2784 [2020-09-25 09:04:15,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:04:15,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2784 states. [2020-09-25 09:04:15,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2784 to 2522. [2020-09-25 09:04:15,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2522 states. [2020-09-25 09:04:15,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2522 states to 2522 states and 2976 transitions. [2020-09-25 09:04:15,645 INFO L78 Accepts]: Start accepts. Automaton has 2522 states and 2976 transitions. Word has length 155 [2020-09-25 09:04:15,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:15,649 INFO L479 AbstractCegarLoop]: Abstraction has 2522 states and 2976 transitions. [2020-09-25 09:04:15,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:04:15,649 INFO L276 IsEmpty]: Start isEmpty. Operand 2522 states and 2976 transitions. [2020-09-25 09:04:15,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 09:04:15,657 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:15,657 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] [2020-09-25 09:04:15,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:04:15,658 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:15,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:15,658 INFO L82 PathProgramCache]: Analyzing trace with hash -683879195, now seen corresponding path program 1 times [2020-09-25 09:04:15,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:15,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759832584] [2020-09-25 09:04:15,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:15,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:15,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:15,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:15,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:16,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:16,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:16,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:17,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:17,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:17,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:20,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:20,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-25 09:04:20,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 09:04:20,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 09:04:20,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:20,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:20,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:20,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-25 09:04:20,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 09:04:20,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:04:20,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:20,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:20,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:20,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:20,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:20,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:20,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 09:04:20,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:20,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:20,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:04:20,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:20,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:04:20,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:20,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:04:20,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:20,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:20,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:20,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:04:20,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:20,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:04:20,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:20,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:20,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:04:20,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:20,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:04:20,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:20,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 09:04:20,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:20,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:20,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:20,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 09:04:20,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:20,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 09:04:20,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:20,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:20,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:20,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:20,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 09:04:20,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:20,925 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 09:04:20,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759832584] [2020-09-25 09:04:20,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:20,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:04:20,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882201440] [2020-09-25 09:04:20,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:04:20,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:20,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:04:20,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:04:20,928 INFO L87 Difference]: Start difference. First operand 2522 states and 2976 transitions. Second operand 5 states. [2020-09-25 09:04:22,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:22,997 INFO L93 Difference]: Finished difference Result 5806 states and 7039 transitions. [2020-09-25 09:04:22,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:04:22,999 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-09-25 09:04:23,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:23,020 INFO L225 Difference]: With dead ends: 5806 [2020-09-25 09:04:23,021 INFO L226 Difference]: Without dead ends: 2461 [2020-09-25 09:04:23,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 09:04:23,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2461 states. [2020-09-25 09:04:23,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2461 to 2447. [2020-09-25 09:04:23,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2447 states. [2020-09-25 09:04:23,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2447 states to 2447 states and 2844 transitions. [2020-09-25 09:04:23,104 INFO L78 Accepts]: Start accepts. Automaton has 2447 states and 2844 transitions. Word has length 165 [2020-09-25 09:04:23,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:23,104 INFO L479 AbstractCegarLoop]: Abstraction has 2447 states and 2844 transitions. [2020-09-25 09:04:23,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:04:23,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2447 states and 2844 transitions. [2020-09-25 09:04:23,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-09-25 09:04:23,111 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:23,111 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:23,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:04:23,112 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:23,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:23,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1633180622, now seen corresponding path program 1 times [2020-09-25 09:04:23,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:23,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559907266] [2020-09-25 09:04:23,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:23,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:23,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:23,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:23,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:28,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:28,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-25 09:04:28,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:04:28,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 09:04:28,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:28,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:28,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:28,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 09:04:28,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 09:04:28,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:04:28,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:28,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:28,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:28,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:28,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:28,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:28,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:04:28,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:28,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:28,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:04:28,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:28,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:04:28,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:28,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:04:28,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:28,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:28,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:28,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:04:28,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:28,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 09:04:28,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:28,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:28,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:28,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:28,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 09:04:28,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:04:28,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 09:04:28,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:28,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:28,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:28,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 09:04:28,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:28,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 09:04:28,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:28,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:28,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:28,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:04:28,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 09:04:28,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:28,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 09:04:28,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:28,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:28,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:28,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:04:28,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:28,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 09:04:28,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:28,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:28,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:04:28,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 09:04:28,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:04:28,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:04:28,435 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 71 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 09:04:28,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559907266] [2020-09-25 09:04:28,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:28,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:04:28,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022802699] [2020-09-25 09:04:28,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:04:28,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:28,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:04:28,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:04:28,439 INFO L87 Difference]: Start difference. First operand 2447 states and 2844 transitions. Second operand 7 states.