/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label14.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:35:40,253 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:35:40,257 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:35:40,302 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:35:40,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:35:40,310 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:35:40,312 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:35:40,316 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:35:40,319 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:35:40,323 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:35:40,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:35:40,324 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:35:40,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:35:40,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:35:40,331 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:35:40,332 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:35:40,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:35:40,335 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:35:40,337 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:35:40,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:35:40,350 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:35:40,351 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:35:40,352 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:35:40,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:35:40,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:35:40,367 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:35:40,367 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:35:40,368 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:35:40,369 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:35:40,376 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:35:40,376 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:35:40,377 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:35:40,381 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:35:40,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:35:40,383 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:35:40,384 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:35:40,386 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:35:40,386 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:35:40,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:35:40,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:35:40,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:35:40,389 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 05:35:40,432 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:35:40,433 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:35:40,435 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:35:40,435 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:35:40,435 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:35:40,435 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:35:40,436 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:35:40,436 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:35:40,436 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:35:40,436 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:35:40,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:35:40,438 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:35:40,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:35:40,438 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:35:40,439 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:35:40,439 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:35:40,439 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:35:40,439 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:35:40,440 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:35:40,440 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:35:40,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:35:40,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:35:40,440 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:35:40,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:35:40,441 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:35:40,441 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:35:40,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:35:40,441 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:35:40,442 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:35:40,442 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:35:40,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:35:40,904 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:35:40,909 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:35:40,912 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:35:40,912 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:35:40,914 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label14.c [2020-09-25 05:35:41,003 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0806899fc/73fe07563a0d4d92874cff407358bbe7/FLAG2a08fbdb3 [2020-09-25 05:35:41,639 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:35:41,640 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label14.c [2020-09-25 05:35:41,659 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0806899fc/73fe07563a0d4d92874cff407358bbe7/FLAG2a08fbdb3 [2020-09-25 05:35:41,906 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0806899fc/73fe07563a0d4d92874cff407358bbe7 [2020-09-25 05:35:41,920 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:35:41,925 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:35:41,928 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:35:41,928 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:35:41,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:35:41,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:35:41" (1/1) ... [2020-09-25 05:35:41,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45241865 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:41, skipping insertion in model container [2020-09-25 05:35:41,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:35:41" (1/1) ... [2020-09-25 05:35:41,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:35:42,026 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:35:42,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:35:42,585 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:35:42,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:35:42,816 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:35:42,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:42 WrapperNode [2020-09-25 05:35:42,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:35:42,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:35:42,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:35:42,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:35:42,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:42" (1/1) ... [2020-09-25 05:35:42,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:42" (1/1) ... [2020-09-25 05:35:42,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:42" (1/1) ... [2020-09-25 05:35:42,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:42" (1/1) ... [2020-09-25 05:35:42,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:42" (1/1) ... [2020-09-25 05:35:42,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:42" (1/1) ... [2020-09-25 05:35:42,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:42" (1/1) ... [2020-09-25 05:35:42,932 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:35:42,933 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:35:42,933 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:35:42,933 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:35:42,934 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:42" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:35:43,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:35:43,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:35:43,006 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:35:43,006 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:35:43,006 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:35:43,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:35:43,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:35:43,007 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:35:43,007 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:35:43,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:35:43,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:35:44,357 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:35:44,358 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:35:44,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:35:44 BoogieIcfgContainer [2020-09-25 05:35:44,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:35:44,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:35:44,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:35:44,373 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:35:44,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:35:41" (1/3) ... [2020-09-25 05:35:44,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e31f99b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:35:44, skipping insertion in model container [2020-09-25 05:35:44,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:35:42" (2/3) ... [2020-09-25 05:35:44,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e31f99b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:35:44, skipping insertion in model container [2020-09-25 05:35:44,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:35:44" (3/3) ... [2020-09-25 05:35:44,377 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label14.c [2020-09-25 05:35:44,389 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:35:44,401 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:35:44,426 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:35:44,463 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:35:44,463 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:35:44,463 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:35:44,463 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:35:44,463 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:35:44,464 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:35:44,464 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:35:44,464 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:35:44,497 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 05:35:44,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 05:35:44,517 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:44,519 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, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:35:44,520 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:44,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:44,528 INFO L82 PathProgramCache]: Analyzing trace with hash 569136050, now seen corresponding path program 1 times [2020-09-25 05:35:44,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:44,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798812231] [2020-09-25 05:35:44,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:44,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:45,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:45,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:46,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:47,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:48,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:49,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:49,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:49,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 05:35:49,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:35:49,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 05:35:49,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:49,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:49,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:35:49,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 05:35:49,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 05:35:49,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:35:50,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:50,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:50,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:50,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:50,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:35:50,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:50,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 05:35:50,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:50,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:50,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:50,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:50,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 05:35:50,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:50,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:35:50,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798812231] [2020-09-25 05:35:50,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:35:50,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:35:50,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952141379] [2020-09-25 05:35:50,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:35:50,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:50,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:35:50,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:35:50,250 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 05:35:52,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:52,738 INFO L93 Difference]: Finished difference Result 1205 states and 1651 transitions. [2020-09-25 05:35:52,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:35:52,740 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-25 05:35:52,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:52,776 INFO L225 Difference]: With dead ends: 1205 [2020-09-25 05:35:52,776 INFO L226 Difference]: Without dead ends: 627 [2020-09-25 05:35:52,789 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 05:35:52,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-09-25 05:35:52,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 613. [2020-09-25 05:35:52,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-09-25 05:35:52,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 759 transitions. [2020-09-25 05:35:52,939 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 759 transitions. Word has length 143 [2020-09-25 05:35:52,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:52,940 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 759 transitions. [2020-09-25 05:35:52,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:35:52,940 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 759 transitions. [2020-09-25 05:35:52,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-25 05:35:52,947 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:52,948 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:35:52,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:35:52,948 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:52,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:52,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1046453143, now seen corresponding path program 1 times [2020-09-25 05:35:52,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:52,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143688175] [2020-09-25 05:35:52,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:52,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:52,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:53,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:53,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:53,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:57,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:57,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-25 05:35:57,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:35:57,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 05:35:57,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:57,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:57,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:35:57,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 05:35:57,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 05:35:57,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 05:35:58,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:58,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:58,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:58,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:58,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:35:58,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:58,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 05:35:58,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:58,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:58,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:58,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:58,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 05:35:58,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:35:58,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:35:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:58,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:58,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:58,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 05:35:58,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:58,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 05:35:58,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:58,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:58,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:58,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:35:58,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 05:35:58,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:58,388 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:35:58,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143688175] [2020-09-25 05:35:58,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:35:58,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 05:35:58,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053021638] [2020-09-25 05:35:58,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:35:58,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:58,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:35:58,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:35:58,394 INFO L87 Difference]: Start difference. First operand 613 states and 759 transitions. Second operand 8 states. [2020-09-25 05:36:02,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:36:02,275 INFO L93 Difference]: Finished difference Result 2086 states and 2719 transitions. [2020-09-25 05:36:02,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 05:36:02,277 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 177 [2020-09-25 05:36:02,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:36:02,290 INFO L225 Difference]: With dead ends: 2086 [2020-09-25 05:36:02,290 INFO L226 Difference]: Without dead ends: 1495 [2020-09-25 05:36:02,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-25 05:36:02,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2020-09-25 05:36:02,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 1266. [2020-09-25 05:36:02,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1266 states. [2020-09-25 05:36:02,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 1650 transitions. [2020-09-25 05:36:02,351 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 1650 transitions. Word has length 177 [2020-09-25 05:36:02,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:36:02,351 INFO L479 AbstractCegarLoop]: Abstraction has 1266 states and 1650 transitions. [2020-09-25 05:36:02,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:36:02,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 1650 transitions. [2020-09-25 05:36:02,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 05:36:02,358 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:36:02,358 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:36:02,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:36:02,359 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:36:02,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:36:02,359 INFO L82 PathProgramCache]: Analyzing trace with hash 139340650, now seen corresponding path program 1 times [2020-09-25 05:36:02,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:36:02,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850002507] [2020-09-25 05:36:02,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:36:02,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:02,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:02,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:02,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:02,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:04,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:04,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:05,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:05,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:07,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:07,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 05:36:07,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:36:07,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 05:36:07,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:07,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:07,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:36:07,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 05:36:07,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-25 05:36:07,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:07,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:36:07,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:07,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:07,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:07,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:36:07,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:07,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:36:07,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:07,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:07,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:36:07,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:07,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:36:07,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:07,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:36:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:07,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:07,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:07,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 05:36:07,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:07,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 05:36:07,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:07,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:07,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:36:07,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:07,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 05:36:07,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:07,717 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 05:36:07,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [850002507] [2020-09-25 05:36:07,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:36:07,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:36:07,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593086390] [2020-09-25 05:36:07,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:36:07,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:36:07,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:36:07,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:36:07,724 INFO L87 Difference]: Start difference. First operand 1266 states and 1650 transitions. Second operand 5 states. [2020-09-25 05:36:09,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:36:09,735 INFO L93 Difference]: Finished difference Result 2283 states and 2952 transitions. [2020-09-25 05:36:09,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:36:09,736 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-09-25 05:36:09,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:36:09,742 INFO L225 Difference]: With dead ends: 2283 [2020-09-25 05:36:09,742 INFO L226 Difference]: Without dead ends: 1039 [2020-09-25 05:36:09,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:36:09,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-09-25 05:36:09,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 933. [2020-09-25 05:36:09,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 933 states. [2020-09-25 05:36:09,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1150 transitions. [2020-09-25 05:36:09,778 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1150 transitions. Word has length 181 [2020-09-25 05:36:09,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:36:09,779 INFO L479 AbstractCegarLoop]: Abstraction has 933 states and 1150 transitions. [2020-09-25 05:36:09,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:36:09,779 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1150 transitions. [2020-09-25 05:36:09,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-25 05:36:09,784 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:36:09,785 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:36:09,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:36:09,785 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:36:09,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:36:09,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1806294077, now seen corresponding path program 1 times [2020-09-25 05:36:09,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:36:09,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474886348] [2020-09-25 05:36:09,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:36:09,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:09,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:09,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:10,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:10,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:10,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:11,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:14,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:14,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-09-25 05:36:14,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:36:14,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 05:36:14,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:14,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:14,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:36:14,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 05:36:14,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 05:36:14,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:14,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:36:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:14,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:14,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:14,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:36:14,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:14,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:36:14,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:14,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:14,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:36:14,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:14,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:36:14,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:14,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:36:14,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:14,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:14,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:14,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 05:36:14,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:14,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:36:14,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:14,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:14,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:36:14,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:14,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 05:36:14,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:14,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 05:36:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:14,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:15,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:15,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 05:36:15,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:15,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 05:36:15,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:15,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:15,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:36:15,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:36:15,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 05:36:15,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:15,098 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:36:15,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1474886348] [2020-09-25 05:36:15,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:36:15,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:36:15,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778117709] [2020-09-25 05:36:15,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:36:15,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:36:15,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:36:15,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:36:15,102 INFO L87 Difference]: Start difference. First operand 933 states and 1150 transitions. Second operand 7 states. [2020-09-25 05:36:18,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:36:18,252 INFO L93 Difference]: Finished difference Result 3019 states and 4096 transitions. [2020-09-25 05:36:18,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:36:18,253 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 195 [2020-09-25 05:36:18,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:36:18,278 INFO L225 Difference]: With dead ends: 3019 [2020-09-25 05:36:18,278 INFO L226 Difference]: Without dead ends: 2108 [2020-09-25 05:36:18,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:36:18,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states. [2020-09-25 05:36:18,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 2029. [2020-09-25 05:36:18,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2029 states. [2020-09-25 05:36:18,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2029 states to 2029 states and 2550 transitions. [2020-09-25 05:36:18,400 INFO L78 Accepts]: Start accepts. Automaton has 2029 states and 2550 transitions. Word has length 195 [2020-09-25 05:36:18,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:36:18,401 INFO L479 AbstractCegarLoop]: Abstraction has 2029 states and 2550 transitions. [2020-09-25 05:36:18,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:36:18,401 INFO L276 IsEmpty]: Start isEmpty. Operand 2029 states and 2550 transitions. [2020-09-25 05:36:18,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-25 05:36:18,417 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:36:18,417 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:36:18,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:36:18,418 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:36:18,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:36:18,419 INFO L82 PathProgramCache]: Analyzing trace with hash 551155189, now seen corresponding path program 1 times [2020-09-25 05:36:18,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:36:18,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669418690] [2020-09-25 05:36:18,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:36:18,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:18,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:18,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:18,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:18,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:22,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:22,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-09-25 05:36:22,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:36:22,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4198 [2020-09-25 05:36:22,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:22,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:22,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:36:22,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-25 05:36:22,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 05:36:22,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:36:22,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:36:22,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:22,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:22,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:22,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 05:36:22,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:22,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 05:36:22,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:22,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:22,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:36:22,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:22,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:36:22,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:36:22,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 05:36:22,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:22,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:22,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:22,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:36:22,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:22,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:36:22,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:22,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:22,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:36:22,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:22,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:36:22,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:36:22,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 05:36:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:22,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:22,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:36:22,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 05:36:22,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:36:22,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 05:36:22,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:36:22,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:36:22,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:36:22,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:36:22,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 05:36:22,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:36:22,973 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 05:36:22,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669418690] [2020-09-25 05:36:22,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:36:22,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:36:22,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284668262] [2020-09-25 05:36:22,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:36:22,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:36:22,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:36:22,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:36:22,976 INFO L87 Difference]: Start difference. First operand 2029 states and 2550 transitions. Second operand 6 states. [2020-09-25 05:36:25,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:36:25,420 INFO L93 Difference]: Finished difference Result 4541 states and 5967 transitions. [2020-09-25 05:36:25,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:36:25,422 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 199 [2020-09-25 05:36:25,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:36:25,438 INFO L225 Difference]: With dead ends: 4541 [2020-09-25 05:36:25,438 INFO L226 Difference]: Without dead ends: 2534 [2020-09-25 05:36:25,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 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 05:36:25,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2534 states. [2020-09-25 05:36:25,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2534 to 2509. [2020-09-25 05:36:25,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2509 states. [2020-09-25 05:36:25,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2509 states to 2509 states and 3132 transitions. [2020-09-25 05:36:25,539 INFO L78 Accepts]: Start accepts. Automaton has 2509 states and 3132 transitions. Word has length 199 [2020-09-25 05:36:25,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:36:25,539 INFO L479 AbstractCegarLoop]: Abstraction has 2509 states and 3132 transitions. [2020-09-25 05:36:25,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:36:25,540 INFO L276 IsEmpty]: Start isEmpty. Operand 2509 states and 3132 transitions. [2020-09-25 05:36:25,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-09-25 05:36:25,556 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:36:25,556 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:36:25,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:36:25,557 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:36:25,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:36:25,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1287869319, now seen corresponding path program 1 times [2020-09-25 05:36:25,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:36:25,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725241938] [2020-09-25 05:36:25,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:36:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:36:25,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:25,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:27,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:27,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:27,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:27,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:28,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:29,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:36:29,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking...