/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_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:03:34,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:03:34,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:03:34,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:03:34,269 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:03:34,270 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:03:34,272 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:03:34,274 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:03:34,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:03:34,276 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:03:34,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:03:34,279 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:03:34,279 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:03:34,280 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:03:34,281 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:03:34,283 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:03:34,284 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:03:34,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:03:34,287 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:03:34,289 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:03:34,291 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:03:34,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:03:34,294 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:03:34,295 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:03:34,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:03:34,298 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:03:34,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:03:34,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:03:34,300 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:03:34,301 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:03:34,301 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:03:34,304 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:03:34,305 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:03:34,306 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:03:34,310 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:03:34,310 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:03:34,311 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:03:34,311 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:03:34,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:03:34,313 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:03:34,313 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:03:34,314 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 09:03:34,341 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:03:34,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:03:34,343 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:03:34,343 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:03:34,343 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:03:34,343 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:03:34,344 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:03:34,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:03:34,344 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:03:34,344 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:03:34,344 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:03:34,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:03:34,345 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:03:34,345 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:03:34,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:03:34,345 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:03:34,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:03:34,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:03:34,346 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:03:34,346 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:03:34,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:03:34,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:03:34,347 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:03:34,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:03:34,347 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:03:34,347 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:03:34,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:03:34,348 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:03:34,348 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:03:34,348 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 09:03:34,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:03:34,829 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:03:34,833 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:03:34,835 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:03:34,835 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:03:34,837 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label42.c [2020-09-25 09:03:34,929 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/824a15c71/ac6cb89386584076a36ed58704ada9fa/FLAGa5f96d661 [2020-09-25 09:03:35,581 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:03:35,582 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label42.c [2020-09-25 09:03:35,598 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/824a15c71/ac6cb89386584076a36ed58704ada9fa/FLAGa5f96d661 [2020-09-25 09:03:35,817 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/824a15c71/ac6cb89386584076a36ed58704ada9fa [2020-09-25 09:03:35,833 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:03:35,842 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:03:35,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:03:35,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:03:35,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:03:35,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:03:35" (1/1) ... [2020-09-25 09:03:35,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1987833a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:35, skipping insertion in model container [2020-09-25 09:03:35,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:03:35" (1/1) ... [2020-09-25 09:03:35,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:03:35,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:03:36,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:03:36,578 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:03:36,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:03:36,715 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:03:36,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:36 WrapperNode [2020-09-25 09:03:36,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:03:36,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:03:36,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:03:36,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:03:36,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:36" (1/1) ... [2020-09-25 09:03:36,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:36" (1/1) ... [2020-09-25 09:03:36,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:36" (1/1) ... [2020-09-25 09:03:36,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:36" (1/1) ... [2020-09-25 09:03:36,806 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:36" (1/1) ... [2020-09-25 09:03:36,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:36" (1/1) ... [2020-09-25 09:03:36,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:36" (1/1) ... [2020-09-25 09:03:36,847 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:03:36,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:03:36,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:03:36,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:03:36,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:36" (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 09:03:36,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:03:36,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:03:36,926 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:03:36,926 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:03:36,926 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:03:36,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:03:36,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:03:36,927 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:03:36,927 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:03:36,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:03:36,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:03:38,218 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:03:38,218 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:03:38,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:03:38 BoogieIcfgContainer [2020-09-25 09:03:38,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:03:38,229 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:03:38,229 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:03:38,232 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:03:38,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:03:35" (1/3) ... [2020-09-25 09:03:38,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b3a561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:03:38, skipping insertion in model container [2020-09-25 09:03:38,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:36" (2/3) ... [2020-09-25 09:03:38,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b3a561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:03:38, skipping insertion in model container [2020-09-25 09:03:38,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:03:38" (3/3) ... [2020-09-25 09:03:38,237 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label42.c [2020-09-25 09:03:38,249 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:03:38,261 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:03:38,284 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:03:38,321 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:03:38,321 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:03:38,321 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:03:38,321 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:03:38,322 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:03:38,322 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:03:38,322 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:03:38,322 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:03:38,354 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 09:03:38,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-09-25 09:03:38,373 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:03:38,375 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:03:38,375 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:03:38,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:03:38,384 INFO L82 PathProgramCache]: Analyzing trace with hash -551630175, now seen corresponding path program 1 times [2020-09-25 09:03:38,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:03:38,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616197933] [2020-09-25 09:03:38,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:03:38,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:38,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:39,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:39,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:40,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:42,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:42,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:43,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:43,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-25 09:03:43,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:03:43,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 09:03:43,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:43,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:43,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:03:43,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 09:03:43,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 09:03:43,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:03:43,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:03:43,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:43,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:43,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:43,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:03:43,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:43,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 09:03:43,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:43,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:43,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:03:43,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:43,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 09:03:43,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:43,963 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 09:03:43,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616197933] [2020-09-25 09:03:43,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:03:43,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 09:03:43,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256987633] [2020-09-25 09:03:43,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:03:43,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:03:43,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:03:43,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:03:43,998 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-25 09:03:46,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:03:46,989 INFO L93 Difference]: Finished difference Result 1539 states and 2132 transitions. [2020-09-25 09:03:46,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:03:46,991 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-09-25 09:03:46,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:03:47,017 INFO L225 Difference]: With dead ends: 1539 [2020-09-25 09:03:47,018 INFO L226 Difference]: Without dead ends: 935 [2020-09-25 09:03:47,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:03:47,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2020-09-25 09:03:47,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 878. [2020-09-25 09:03:47,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2020-09-25 09:03:47,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1089 transitions. [2020-09-25 09:03:47,161 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1089 transitions. Word has length 126 [2020-09-25 09:03:47,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:03:47,162 INFO L479 AbstractCegarLoop]: Abstraction has 878 states and 1089 transitions. [2020-09-25 09:03:47,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:03:47,162 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1089 transitions. [2020-09-25 09:03:47,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 09:03:47,170 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:03:47,170 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:03:47,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:03:47,171 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:03:47,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:03:47,172 INFO L82 PathProgramCache]: Analyzing trace with hash 2026408437, now seen corresponding path program 1 times [2020-09-25 09:03:47,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:03:47,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070981597] [2020-09-25 09:03:47,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:03:47,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:47,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:47,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:47,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:48,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:48,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:48,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:49,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:52,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:52,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-25 09:03:52,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:03:52,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 09:03:52,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:52,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:52,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:03:52,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 09:03:52,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 09:03:52,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 09:03:52,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:03:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:52,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:52,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:52,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:03:52,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:52,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 09:03:52,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:52,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:52,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:03:52,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:52,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:03:52,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:52,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:03:52,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:52,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:52,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:52,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:03:52,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:52,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 09:03:52,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:52,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:52,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:03:52,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:52,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 09:03:52,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:52,539 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 09:03:52,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070981597] [2020-09-25 09:03:52,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:03:52,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:03:52,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579215217] [2020-09-25 09:03:52,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:03:52,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:03:52,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:03:52,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:03:52,546 INFO L87 Difference]: Start difference. First operand 878 states and 1089 transitions. Second operand 5 states. [2020-09-25 09:03:54,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:03:54,562 INFO L93 Difference]: Finished difference Result 2247 states and 2909 transitions. [2020-09-25 09:03:54,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:03:54,563 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-09-25 09:03:54,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:03:54,574 INFO L225 Difference]: With dead ends: 2247 [2020-09-25 09:03:54,575 INFO L226 Difference]: Without dead ends: 1391 [2020-09-25 09:03:54,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:03:54,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2020-09-25 09:03:54,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1336. [2020-09-25 09:03:54,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1336 states. [2020-09-25 09:03:54,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 1631 transitions. [2020-09-25 09:03:54,656 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 1631 transitions. Word has length 144 [2020-09-25 09:03:54,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:03:54,661 INFO L479 AbstractCegarLoop]: Abstraction has 1336 states and 1631 transitions. [2020-09-25 09:03:54,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:03:54,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 1631 transitions. [2020-09-25 09:03:54,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 09:03:54,674 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:03:54,676 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 09:03:54,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:03:54,677 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:03:54,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:03:54,677 INFO L82 PathProgramCache]: Analyzing trace with hash -149723680, now seen corresponding path program 1 times [2020-09-25 09:03:54,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:03:54,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1721799996] [2020-09-25 09:03:54,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:03:54,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:54,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:54,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:55,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:55,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:57,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:59,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:59,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 09:03:59,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:03:59,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 09:03:59,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:59,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:59,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:03:59,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 09:03:59,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-09-25 09:03:59,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 09:03:59,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:03:59,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:59,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:59,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:59,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:03:59,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:59,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 09:03:59,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:59,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:59,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:03:59,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:59,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:03:59,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:59,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:03:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:59,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:59,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:59,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 09:03:59,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:59,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 09:04:00,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:00,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:00,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:00,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:00,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:04:00,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:00,035 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:04:00,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1721799996] [2020-09-25 09:04:00,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:00,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:04:00,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367458486] [2020-09-25 09:04:00,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:04:00,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:00,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:04:00,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:04:00,038 INFO L87 Difference]: Start difference. First operand 1336 states and 1631 transitions. Second operand 5 states. [2020-09-25 09:04:02,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:02,086 INFO L93 Difference]: Finished difference Result 3603 states and 4612 transitions. [2020-09-25 09:04:02,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:04:02,086 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-09-25 09:04:02,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:02,103 INFO L225 Difference]: With dead ends: 3603 [2020-09-25 09:04:02,103 INFO L226 Difference]: Without dead ends: 2289 [2020-09-25 09:04:02,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:04:02,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2289 states. [2020-09-25 09:04:02,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2289 to 2249. [2020-09-25 09:04:02,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2249 states. [2020-09-25 09:04:02,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2249 states to 2249 states and 2723 transitions. [2020-09-25 09:04:02,232 INFO L78 Accepts]: Start accepts. Automaton has 2249 states and 2723 transitions. Word has length 150 [2020-09-25 09:04:02,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:02,232 INFO L479 AbstractCegarLoop]: Abstraction has 2249 states and 2723 transitions. [2020-09-25 09:04:02,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:04:02,233 INFO L276 IsEmpty]: Start isEmpty. Operand 2249 states and 2723 transitions. [2020-09-25 09:04:02,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 09:04:02,245 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:02,245 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:02,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:04:02,246 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:02,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:02,246 INFO L82 PathProgramCache]: Analyzing trace with hash 537580245, now seen corresponding path program 1 times [2020-09-25 09:04:02,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:02,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451201268] [2020-09-25 09:04:02,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:02,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:02,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:02,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:02,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:02,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:03,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:03,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:03,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:04,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:07,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:07,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 09:04:07,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:04:07,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-25 09:04:07,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:07,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:07,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:07,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-25 09:04:07,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-09-25 09:04:07,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:07,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:07,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:07,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:07,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:07,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:07,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:07,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:04:07,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:07,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:07,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:04:07,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:07,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:04:07,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:07,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:04:07,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:07,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:07,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:07,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 09:04:07,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:07,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 09:04:07,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:07,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:07,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:07,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:07,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 09:04:07,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:07,553 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:04:07,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451201268] [2020-09-25 09:04:07,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:07,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:04:07,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693909280] [2020-09-25 09:04:07,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:04:07,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:07,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:04:07,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:04:07,558 INFO L87 Difference]: Start difference. First operand 2249 states and 2723 transitions. Second operand 5 states. [2020-09-25 09:04:09,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:09,518 INFO L93 Difference]: Finished difference Result 5438 states and 6872 transitions. [2020-09-25 09:04:09,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:04:09,519 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-09-25 09:04:09,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:09,539 INFO L225 Difference]: With dead ends: 5438 [2020-09-25 09:04:09,539 INFO L226 Difference]: Without dead ends: 3211 [2020-09-25 09:04:09,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:04:09,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3211 states. [2020-09-25 09:04:09,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3211 to 3011. [2020-09-25 09:04:09,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3011 states. [2020-09-25 09:04:09,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3011 states to 3011 states and 3640 transitions. [2020-09-25 09:04:09,658 INFO L78 Accepts]: Start accepts. Automaton has 3011 states and 3640 transitions. Word has length 161 [2020-09-25 09:04:09,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:09,659 INFO L479 AbstractCegarLoop]: Abstraction has 3011 states and 3640 transitions. [2020-09-25 09:04:09,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:04:09,659 INFO L276 IsEmpty]: Start isEmpty. Operand 3011 states and 3640 transitions. [2020-09-25 09:04:09,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 09:04:09,670 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:09,670 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:04:09,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:04:09,671 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:09,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:09,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1033135550, now seen corresponding path program 1 times [2020-09-25 09:04:09,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:09,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732016116] [2020-09-25 09:04:09,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:09,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:09,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:09,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:09,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:11,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:14,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:14,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 09:04:14,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:04:14,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 09:04:14,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:14,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:14,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:04:14,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 09:04:14,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 09:04:14,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:04:14,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:14,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:14,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:14,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:14,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:14,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:14,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 09:04:14,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:14,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:14,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:14,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:14,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 09:04:14,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:14,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:04:14,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:14,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:14,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:14,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:14,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:04:14,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:04:14,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 09:04:14,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:14,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:14,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:14,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:04:14,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 09:04:14,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:14,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 09:04:14,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:14,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:14,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:14,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 09:04:14,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:14,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 09:04:14,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:14,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:14,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:14,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:04:14,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 09:04:14,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:14,978 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 09:04:14,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732016116] [2020-09-25 09:04:14,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:14,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:04:14,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611540124] [2020-09-25 09:04:14,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:04:14,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:14,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:04:14,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:04:14,982 INFO L87 Difference]: Start difference. First operand 3011 states and 3640 transitions. Second operand 7 states. [2020-09-25 09:04:17,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:04:17,067 INFO L93 Difference]: Finished difference Result 7120 states and 8774 transitions. [2020-09-25 09:04:17,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:04:17,068 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 163 [2020-09-25 09:04:17,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:04:17,087 INFO L225 Difference]: With dead ends: 7120 [2020-09-25 09:04:17,088 INFO L226 Difference]: Without dead ends: 4131 [2020-09-25 09:04:17,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:04:17,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4131 states. [2020-09-25 09:04:17,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4131 to 3624. [2020-09-25 09:04:17,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3624 states. [2020-09-25 09:04:17,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3624 states to 3624 states and 4401 transitions. [2020-09-25 09:04:17,206 INFO L78 Accepts]: Start accepts. Automaton has 3624 states and 4401 transitions. Word has length 163 [2020-09-25 09:04:17,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:04:17,207 INFO L479 AbstractCegarLoop]: Abstraction has 3624 states and 4401 transitions. [2020-09-25 09:04:17,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:04:17,207 INFO L276 IsEmpty]: Start isEmpty. Operand 3624 states and 4401 transitions. [2020-09-25 09:04:17,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 09:04:17,218 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:04:17,219 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] [2020-09-25 09:04:17,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:04:17,219 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:04:17,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:04:17,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1209881623, now seen corresponding path program 1 times [2020-09-25 09:04:17,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:04:17,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784574439] [2020-09-25 09:04:17,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:04:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:17,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:17,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:17,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:17,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:19,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:19,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:20,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:20,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:22,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:22,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 09:04:22,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:04:22,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 09:04:22,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:22,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:22,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:04:22,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 09:04:22,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 09:04:22,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:04:22,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:04:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:22,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:22,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:22,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:04:22,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:22,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 09:04:22,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:22,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:22,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:04:22,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:22,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:04:22,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:22,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:04:22,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:04:22,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:04:22,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:04:22,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 09:04:22,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:04:22,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 09:04:22,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:04:22,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:04:22,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:04:22,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:04:22,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 09:04:22,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:04:22,491 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 09:04:22,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784574439] [2020-09-25 09:04:22,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:04:22,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:04:22,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527854205] [2020-09-25 09:04:22,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:04:22,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:04:22,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:04:22,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:04:22,494 INFO L87 Difference]: Start difference. First operand 3624 states and 4401 transitions. Second operand 5 states.