/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:32:53,209 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:32:53,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:32:53,255 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:32:53,256 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:32:53,264 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:32:53,266 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:32:53,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:32:53,273 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:32:53,276 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:32:53,277 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:32:53,278 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:32:53,278 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:32:53,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:32:53,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:32:53,286 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:32:53,288 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:32:53,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:32:53,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:32:53,300 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:32:53,303 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:32:53,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:32:53,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:32:53,306 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:32:53,319 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:32:53,319 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:32:53,319 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:32:53,325 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:32:53,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:32:53,327 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:32:53,327 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:32:53,331 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:32:53,332 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:32:53,336 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:32:53,337 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:32:53,337 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:32:53,339 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:32:53,340 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:32:53,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:32:53,341 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:32:53,342 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:32:53,343 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 13:32:53,388 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:32:53,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:32:53,391 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:32:53,391 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:32:53,391 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:32:53,391 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:32:53,392 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:32:53,392 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:32:53,392 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:32:53,392 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:32:53,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:32:53,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:32:53,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:32:53,394 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:32:53,395 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:32:53,395 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:32:53,395 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:32:53,395 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:32:53,395 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:32:53,396 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:32:53,396 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:32:53,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:32:53,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:32:53,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:32:53,397 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:32:53,397 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:32:53,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:32:53,397 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:32:53,397 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:32:53,398 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=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:32:53,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:32:53,899 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:32:53,903 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:32:53,905 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:32:53,906 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:32:53,907 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label51.c [2020-09-25 13:32:54,000 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb3fa65e6/c4a932d1bf2e4a89bb463d61c8d480f8/FLAG4701f91fe [2020-09-25 13:32:54,682 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:32:54,682 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label51.c [2020-09-25 13:32:54,714 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb3fa65e6/c4a932d1bf2e4a89bb463d61c8d480f8/FLAG4701f91fe [2020-09-25 13:32:54,899 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb3fa65e6/c4a932d1bf2e4a89bb463d61c8d480f8 [2020-09-25 13:32:54,914 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:32:54,921 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:32:54,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:32:54,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:32:54,927 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:32:54,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:32:54" (1/1) ... [2020-09-25 13:32:54,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d4757cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:54, skipping insertion in model container [2020-09-25 13:32:54,933 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:32:54" (1/1) ... [2020-09-25 13:32:54,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:32:54,998 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:32:55,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:32:55,549 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:32:55,675 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:32:55,696 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:32:55,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:55 WrapperNode [2020-09-25 13:32:55,697 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:32:55,698 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:32:55,698 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:32:55,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:32:55,718 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:55" (1/1) ... [2020-09-25 13:32:55,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:55" (1/1) ... [2020-09-25 13:32:55,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:55" (1/1) ... [2020-09-25 13:32:55,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:55" (1/1) ... [2020-09-25 13:32:55,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:55" (1/1) ... [2020-09-25 13:32:55,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:55" (1/1) ... [2020-09-25 13:32:55,859 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:55" (1/1) ... [2020-09-25 13:32:55,868 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:32:55,869 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:32:55,869 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:32:55,869 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:32:55,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:55" (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 13:32:55,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:32:55,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:32:55,957 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:32:55,957 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:32:55,957 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:32:55,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:32:55,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:32:55,959 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:32:55,959 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:32:55,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:32:55,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:32:57,286 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:32:57,286 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:32:57,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:32:57 BoogieIcfgContainer [2020-09-25 13:32:57,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:32:57,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:32:57,302 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:32:57,306 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:32:57,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:32:54" (1/3) ... [2020-09-25 13:32:57,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b4cc94e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:32:57, skipping insertion in model container [2020-09-25 13:32:57,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:55" (2/3) ... [2020-09-25 13:32:57,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b4cc94e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:32:57, skipping insertion in model container [2020-09-25 13:32:57,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:32:57" (3/3) ... [2020-09-25 13:32:57,312 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label51.c [2020-09-25 13:32:57,324 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:32:57,343 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:32:57,369 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:32:57,419 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:32:57,420 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:32:57,420 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:32:57,420 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:32:57,421 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:32:57,421 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:32:57,421 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:32:57,421 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:32:57,466 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 13:32:57,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-25 13:32:57,507 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:57,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:32:57,509 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:57,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:57,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1376443753, now seen corresponding path program 1 times [2020-09-25 13:32:57,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:57,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331446254] [2020-09-25 13:32:57,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:57,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:57,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:58,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:58,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:59,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:00,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:02,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:02,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 13:33:02,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:33:02,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 13:33:02,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:02,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:02,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:33:02,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 13:33:02,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 13:33:02,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:33:03,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:03,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:03,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:03,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:03,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:03,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:03,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 13:33:03,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:03,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:03,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:03,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:03,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 13:33:03,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:33:03,149 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 13:33:03,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331446254] [2020-09-25 13:33:03,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:33:03,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:33:03,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91264573] [2020-09-25 13:33:03,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:33:03,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:03,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:33:03,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:33:03,185 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 13:33:05,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:05,634 INFO L93 Difference]: Finished difference Result 1387 states and 1841 transitions. [2020-09-25 13:33:05,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:33:05,639 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2020-09-25 13:33:05,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:05,666 INFO L225 Difference]: With dead ends: 1387 [2020-09-25 13:33:05,666 INFO L226 Difference]: Without dead ends: 779 [2020-09-25 13:33:05,677 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 13:33:05,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2020-09-25 13:33:05,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 659. [2020-09-25 13:33:05,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-09-25 13:33:05,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 807 transitions. [2020-09-25 13:33:05,787 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 807 transitions. Word has length 136 [2020-09-25 13:33:05,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:05,788 INFO L479 AbstractCegarLoop]: Abstraction has 659 states and 807 transitions. [2020-09-25 13:33:05,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:33:05,788 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 807 transitions. [2020-09-25 13:33:05,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 13:33:05,794 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:05,795 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:33:05,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:33:05,795 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:05,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:05,796 INFO L82 PathProgramCache]: Analyzing trace with hash 685540285, now seen corresponding path program 1 times [2020-09-25 13:33:05,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:05,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416189375] [2020-09-25 13:33:05,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:05,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:05,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:05,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:06,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:06,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:07,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:08,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:08,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:10,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:10,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 13:33:10,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:33:10,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 13:33:10,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:10,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:10,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:10,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 13:33:10,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 13:33:10,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:33:10,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:10,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:10,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:11,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:11,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:11,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:11,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:33:11,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:11,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:11,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:11,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:11,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:11,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:11,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:11,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:11,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:11,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:11,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:33:11,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:11,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 13:33:11,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:11,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:11,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:11,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:11,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 13:33:11,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:11,108 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 13:33:11,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416189375] [2020-09-25 13:33:11,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:11,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:33:11,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835761119] [2020-09-25 13:33:11,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:33:11,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:11,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:33:11,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:33:11,116 INFO L87 Difference]: Start difference. First operand 659 states and 807 transitions. Second operand 5 states. [2020-09-25 13:33:13,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:13,471 INFO L93 Difference]: Finished difference Result 1648 states and 2113 transitions. [2020-09-25 13:33:13,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:33:13,473 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-09-25 13:33:13,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:13,481 INFO L225 Difference]: With dead ends: 1648 [2020-09-25 13:33:13,481 INFO L226 Difference]: Without dead ends: 1011 [2020-09-25 13:33:13,485 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 13:33:13,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2020-09-25 13:33:13,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 965. [2020-09-25 13:33:13,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 965 states. [2020-09-25 13:33:13,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1175 transitions. [2020-09-25 13:33:13,531 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1175 transitions. Word has length 154 [2020-09-25 13:33:13,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:13,532 INFO L479 AbstractCegarLoop]: Abstraction has 965 states and 1175 transitions. [2020-09-25 13:33:13,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:33:13,532 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1175 transitions. [2020-09-25 13:33:13,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-25 13:33:13,537 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:13,538 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:33:13,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:33:13,538 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:13,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:13,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1224055138, now seen corresponding path program 1 times [2020-09-25 13:33:13,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:13,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040235809] [2020-09-25 13:33:13,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:13,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:13,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:13,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:14,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:14,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:14,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:17,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:17,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:18,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:18,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:18,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-09-25 13:33:18,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:33:18,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 13:33:18,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:18,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:18,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 13:33:18,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 13:33:18,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 13:33:18,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:19,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:19,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:19,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:19,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:19,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:19,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:33:19,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:19,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:19,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:19,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:19,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:19,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:19,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:19,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:19,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:19,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:19,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:33:19,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:19,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 13:33:19,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:19,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:19,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:33:19,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:19,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:33:19,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:19,619 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:33:19,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1040235809] [2020-09-25 13:33:19,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:19,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 13:33:19,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990577666] [2020-09-25 13:33:19,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 13:33:19,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:19,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 13:33:19,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:33:19,621 INFO L87 Difference]: Start difference. First operand 965 states and 1175 transitions. Second operand 13 states. [2020-09-25 13:33:20,424 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-09-25 13:33:20,788 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-09-25 13:33:21,629 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-09-25 13:33:22,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:22,935 INFO L93 Difference]: Finished difference Result 1996 states and 2510 transitions. [2020-09-25 13:33:22,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 13:33:22,935 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 155 [2020-09-25 13:33:22,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:22,949 INFO L225 Difference]: With dead ends: 1996 [2020-09-25 13:33:22,950 INFO L226 Difference]: Without dead ends: 1053 [2020-09-25 13:33:22,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2020-09-25 13:33:22,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2020-09-25 13:33:23,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 1024. [2020-09-25 13:33:23,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2020-09-25 13:33:23,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1242 transitions. [2020-09-25 13:33:23,010 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1242 transitions. Word has length 155 [2020-09-25 13:33:23,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:23,011 INFO L479 AbstractCegarLoop]: Abstraction has 1024 states and 1242 transitions. [2020-09-25 13:33:23,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 13:33:23,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1242 transitions. [2020-09-25 13:33:23,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-25 13:33:23,018 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:23,019 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:33:23,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:33:23,028 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:23,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:23,029 INFO L82 PathProgramCache]: Analyzing trace with hash 82692427, now seen corresponding path program 1 times [2020-09-25 13:33:23,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:23,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794318954] [2020-09-25 13:33:23,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:23,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:23,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:23,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:23,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:23,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:24,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:24,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:25,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:26,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:28,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:28,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-25 13:33:28,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:33:28,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 13:33:28,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:28,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:28,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:28,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 13:33:28,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-25 13:33:28,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:28,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:28,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:28,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:28,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:28,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:28,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:28,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:33:28,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:28,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:28,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:28,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:28,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:28,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:28,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:28,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:28,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:28,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:28,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:33:28,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:28,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 13:33:28,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:28,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:28,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:28,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:28,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:33:28,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:28,371 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:33:28,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794318954] [2020-09-25 13:33:28,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:28,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 13:33:28,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039953044] [2020-09-25 13:33:28,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:33:28,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:28,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:33:28,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:33:28,379 INFO L87 Difference]: Start difference. First operand 1024 states and 1242 transitions. Second operand 6 states. [2020-09-25 13:33:31,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:31,103 INFO L93 Difference]: Finished difference Result 2744 states and 3556 transitions. [2020-09-25 13:33:31,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:33:31,104 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2020-09-25 13:33:31,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:31,116 INFO L225 Difference]: With dead ends: 2744 [2020-09-25 13:33:31,116 INFO L226 Difference]: Without dead ends: 1742 [2020-09-25 13:33:31,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:33:31,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2020-09-25 13:33:31,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1634. [2020-09-25 13:33:31,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1634 states. [2020-09-25 13:33:31,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 2042 transitions. [2020-09-25 13:33:31,170 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 2042 transitions. Word has length 158 [2020-09-25 13:33:31,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:31,171 INFO L479 AbstractCegarLoop]: Abstraction has 1634 states and 2042 transitions. [2020-09-25 13:33:31,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:33:31,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 2042 transitions. [2020-09-25 13:33:31,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-25 13:33:31,179 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:31,179 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:33:31,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:33:31,180 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:31,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:31,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1101002084, now seen corresponding path program 1 times [2020-09-25 13:33:31,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:31,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136706658] [2020-09-25 13:33:31,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:31,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:31,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:31,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:31,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:32,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:33,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:34,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:35,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:35,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:36,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:36,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-25 13:33:36,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:33:36,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 13:33:36,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:36,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:36,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 13:33:36,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-25 13:33:36,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 13:33:36,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:33:36,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:36,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:36,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:36,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:36,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:36,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:36,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:33:36,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:36,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:36,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:36,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:36,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:36,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:36,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:36,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:36,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:37,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:37,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 13:33:37,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:37,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 13:33:37,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:37,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:37,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:33:37,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:37,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 13:33:37,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:37,335 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:33:37,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136706658] [2020-09-25 13:33:37,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:37,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 13:33:37,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504119934] [2020-09-25 13:33:37,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 13:33:37,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:37,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 13:33:37,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:33:37,337 INFO L87 Difference]: Start difference. First operand 1634 states and 2042 transitions. Second operand 16 states. [2020-09-25 13:33:40,439 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-09-25 13:33:40,637 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-09-25 13:33:41,168 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-09-25 13:33:41,614 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-09-25 13:33:41,821 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-09-25 13:33:42,096 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-09-25 13:33:42,475 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-09-25 13:33:43,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:43,314 INFO L93 Difference]: Finished difference Result 5851 states and 7850 transitions. [2020-09-25 13:33:43,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 13:33:43,315 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 184 [2020-09-25 13:33:43,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:43,338 INFO L225 Difference]: With dead ends: 5851 [2020-09-25 13:33:43,338 INFO L226 Difference]: Without dead ends: 4220 [2020-09-25 13:33:43,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=325, Invalid=605, Unknown=0, NotChecked=0, Total=930 [2020-09-25 13:33:43,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4220 states. [2020-09-25 13:33:43,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4220 to 4153. [2020-09-25 13:33:43,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4153 states. [2020-09-25 13:33:43,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4153 states to 4153 states and 5110 transitions. [2020-09-25 13:33:43,491 INFO L78 Accepts]: Start accepts. Automaton has 4153 states and 5110 transitions. Word has length 184 [2020-09-25 13:33:43,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:43,491 INFO L479 AbstractCegarLoop]: Abstraction has 4153 states and 5110 transitions. [2020-09-25 13:33:43,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 13:33:43,492 INFO L276 IsEmpty]: Start isEmpty. Operand 4153 states and 5110 transitions. [2020-09-25 13:33:43,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 13:33:43,509 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:43,510 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 13:33:43,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:33:43,510 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:43,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:43,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1659877275, now seen corresponding path program 1 times [2020-09-25 13:33:43,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:43,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121169289] [2020-09-25 13:33:43,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:43,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:43,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:43,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:43,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking...