/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/Problem10_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:34:38,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:34:38,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:34:38,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:34:38,324 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:34:38,332 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:34:38,335 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:34:38,338 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:34:38,341 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:34:38,344 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:34:38,346 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:34:38,347 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:34:38,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:34:38,350 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:34:38,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:34:38,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:34:38,359 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:34:38,361 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:34:38,362 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:34:38,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:34:38,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:34:38,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:34:38,376 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:34:38,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:34:38,395 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:34:38,395 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:34:38,395 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:34:38,396 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:34:38,397 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:34:38,398 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:34:38,398 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:34:38,399 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:34:38,400 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:34:38,401 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:34:38,402 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:34:38,402 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:34:38,403 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:34:38,403 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:34:38,403 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:34:38,404 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:34:38,405 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:34:38,406 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 13:34:38,431 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:34:38,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:34:38,432 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:34:38,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:34:38,433 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:34:38,433 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:34:38,433 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:34:38,433 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:34:38,434 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:34:38,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:34:38,434 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:34:38,434 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:34:38,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:34:38,435 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:34:38,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:34:38,435 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:34:38,435 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:34:38,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:34:38,436 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:34:38,436 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:34:38,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:34:38,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:34:38,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:34:38,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:34:38,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:34:38,437 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:34:38,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:34:38,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:34:38,438 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:34:38,438 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 13:34:38,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:34:38,889 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:34:38,894 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:34:38,895 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:34:38,896 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:34:38,897 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label36.c [2020-09-25 13:34:38,981 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/935f7dce3/298304fee92a4717b5a1beac6a0d40ba/FLAG293ce9a5b [2020-09-25 13:34:39,709 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:34:39,710 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label36.c [2020-09-25 13:34:39,723 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/935f7dce3/298304fee92a4717b5a1beac6a0d40ba/FLAG293ce9a5b [2020-09-25 13:34:39,893 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/935f7dce3/298304fee92a4717b5a1beac6a0d40ba [2020-09-25 13:34:39,906 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:34:39,912 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:34:39,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:34:39,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:34:39,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:34:39,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:34:39" (1/1) ... [2020-09-25 13:34:39,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dbfc66d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:39, skipping insertion in model container [2020-09-25 13:34:39,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:34:39" (1/1) ... [2020-09-25 13:34:39,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:34:39,988 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:34:40,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:34:40,453 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:34:40,660 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:34:40,685 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:34:40,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:40 WrapperNode [2020-09-25 13:34:40,686 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:34:40,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:34:40,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:34:40,688 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:34:40,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:40" (1/1) ... [2020-09-25 13:34:40,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:40" (1/1) ... [2020-09-25 13:34:40,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:40" (1/1) ... [2020-09-25 13:34:40,729 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:40" (1/1) ... [2020-09-25 13:34:40,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:40" (1/1) ... [2020-09-25 13:34:40,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:40" (1/1) ... [2020-09-25 13:34:40,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:40" (1/1) ... [2020-09-25 13:34:40,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:34:40,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:34:40,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:34:40,801 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:34:40,802 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:34:40,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:34:40,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:34:40,888 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:34:40,888 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:34:40,888 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:34:40,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:34:40,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:34:40,889 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:34:40,890 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:34:40,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:34:40,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:34:42,403 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:34:42,404 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:34:42,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:34:42 BoogieIcfgContainer [2020-09-25 13:34:42,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:34:42,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:34:42,423 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:34:42,427 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:34:42,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:34:39" (1/3) ... [2020-09-25 13:34:42,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6671493f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:34:42, skipping insertion in model container [2020-09-25 13:34:42,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:40" (2/3) ... [2020-09-25 13:34:42,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6671493f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:34:42, skipping insertion in model container [2020-09-25 13:34:42,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:34:42" (3/3) ... [2020-09-25 13:34:42,434 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label36.c [2020-09-25 13:34:42,447 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:34:42,463 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:34:42,490 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:34:42,544 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:34:42,545 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:34:42,546 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:34:42,546 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:34:42,546 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:34:42,546 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:34:42,547 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:34:42,547 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:34:42,598 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 13:34:42,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 13:34:42,612 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:42,613 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:34:42,614 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:42,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:42,622 INFO L82 PathProgramCache]: Analyzing trace with hash -2108492313, now seen corresponding path program 1 times [2020-09-25 13:34:42,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:42,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428968974] [2020-09-25 13:34:42,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:42,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:42,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:43,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:43,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:43,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 13:34:43,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:34:43,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 913 [2020-09-25 13:34:43,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:43,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:43,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:34:43,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:34:43,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 13:34:43,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:34:43,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:43,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:43,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:43,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:43,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:43,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:43,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 13:34:43,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:43,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:43,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:43,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:43,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:34:43,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:43,940 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 13:34:43,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428968974] [2020-09-25 13:34:43,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:34:43,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:34:43,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231986669] [2020-09-25 13:34:43,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:34:43,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:43,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:34:43,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:34:43,977 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 13:34:46,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:46,145 INFO L93 Difference]: Finished difference Result 1089 states and 1514 transitions. [2020-09-25 13:34:46,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:34:46,148 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-09-25 13:34:46,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:46,171 INFO L225 Difference]: With dead ends: 1089 [2020-09-25 13:34:46,171 INFO L226 Difference]: Without dead ends: 575 [2020-09-25 13:34:46,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:34:46,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-09-25 13:34:46,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2020-09-25 13:34:46,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-25 13:34:46,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 642 transitions. [2020-09-25 13:34:46,281 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 642 transitions. Word has length 58 [2020-09-25 13:34:46,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:46,282 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 642 transitions. [2020-09-25 13:34:46,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:34:46,283 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 642 transitions. [2020-09-25 13:34:46,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 13:34:46,290 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:46,291 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, 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] [2020-09-25 13:34:46,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:34:46,292 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:46,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:46,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1346618775, now seen corresponding path program 1 times [2020-09-25 13:34:46,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:46,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396341651] [2020-09-25 13:34:46,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:46,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:46,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:46,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:46,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:47,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:47,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:47,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:47,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:50,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:50,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 13:34:50,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:34:50,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4502 [2020-09-25 13:34:50,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:50,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:50,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:34:50,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:34:50,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 13:34:50,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:50,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:50,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:50,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:50,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:50,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:50,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:50,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:34:50,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:50,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:50,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:50,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:50,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:34:50,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:50,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:51,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:51,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:51,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:51,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:34:51,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:34:51,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-25 13:34:51,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:51,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:51,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:51,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:51,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 13:34:51,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:51,209 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 13:34:51,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396341651] [2020-09-25 13:34:51,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:51,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:34:51,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496328172] [2020-09-25 13:34:51,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:34:51,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:51,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:34:51,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:34:51,213 INFO L87 Difference]: Start difference. First operand 545 states and 642 transitions. Second operand 5 states. [2020-09-25 13:34:52,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:52,906 INFO L93 Difference]: Finished difference Result 1389 states and 1702 transitions. [2020-09-25 13:34:52,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:34:52,907 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-09-25 13:34:52,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:52,915 INFO L225 Difference]: With dead ends: 1389 [2020-09-25 13:34:52,915 INFO L226 Difference]: Without dead ends: 859 [2020-09-25 13:34:52,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:34:52,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-09-25 13:34:52,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 849. [2020-09-25 13:34:52,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 849 states. [2020-09-25 13:34:52,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1017 transitions. [2020-09-25 13:34:52,979 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1017 transitions. Word has length 137 [2020-09-25 13:34:52,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:52,982 INFO L479 AbstractCegarLoop]: Abstraction has 849 states and 1017 transitions. [2020-09-25 13:34:52,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:34:52,983 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1017 transitions. [2020-09-25 13:34:52,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 13:34:52,994 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:52,994 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, 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] [2020-09-25 13:34:52,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:34:52,995 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:52,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:52,995 INFO L82 PathProgramCache]: Analyzing trace with hash -921428875, now seen corresponding path program 1 times [2020-09-25 13:34:52,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:52,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702482159] [2020-09-25 13:34:52,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:53,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:53,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:53,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:53,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:53,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:54,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:55,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:55,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:56,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:58,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:58,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 13:34:58,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:34:58,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 13:34:58,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:58,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:58,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:34:58,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:34:58,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 13:34:58,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:58,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:58,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:58,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:58,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:58,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:58,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 13:34:58,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:58,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:58,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:58,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:58,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:34:58,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:58,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:58,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:58,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:58,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:58,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:34:58,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:58,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-09-25 13:34:58,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:58,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:58,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:34:58,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:58,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:34:58,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:58,614 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:34:58,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702482159] [2020-09-25 13:34:58,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:58,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:34:58,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277422236] [2020-09-25 13:34:58,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:34:58,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:58,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:34:58,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:34:58,618 INFO L87 Difference]: Start difference. First operand 849 states and 1017 transitions. Second operand 8 states. [2020-09-25 13:35:02,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:02,086 INFO L93 Difference]: Finished difference Result 2420 states and 2994 transitions. [2020-09-25 13:35:02,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:35:02,087 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 147 [2020-09-25 13:35:02,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:02,099 INFO L225 Difference]: With dead ends: 2420 [2020-09-25 13:35:02,099 INFO L226 Difference]: Without dead ends: 1586 [2020-09-25 13:35:02,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:35:02,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2020-09-25 13:35:02,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1497. [2020-09-25 13:35:02,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1497 states. [2020-09-25 13:35:02,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1497 states to 1497 states and 1758 transitions. [2020-09-25 13:35:02,158 INFO L78 Accepts]: Start accepts. Automaton has 1497 states and 1758 transitions. Word has length 147 [2020-09-25 13:35:02,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:02,159 INFO L479 AbstractCegarLoop]: Abstraction has 1497 states and 1758 transitions. [2020-09-25 13:35:02,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:35:02,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1497 states and 1758 transitions. [2020-09-25 13:35:02,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-25 13:35:02,165 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:02,165 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, 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, 1, 1, 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 13:35:02,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:35:02,166 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:02,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:02,166 INFO L82 PathProgramCache]: Analyzing trace with hash -352912224, now seen corresponding path program 1 times [2020-09-25 13:35:02,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:02,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304145520] [2020-09-25 13:35:02,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:02,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:02,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:02,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:02,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:03,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:03,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:03,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:03,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:05,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:07,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:07,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-09-25 13:35:07,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:35:07,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:35:07,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:07,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:07,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:35:07,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 13:35:07,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 13:35:07,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:35:07,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:07,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:07,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:07,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:07,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:07,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:07,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:35:07,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:07,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:07,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:35:07,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:07,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:35:07,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:07,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:07,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:07,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:07,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:07,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:35:07,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:07,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 13:35:07,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:07,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:07,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:07,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:07,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 13:35:07,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:35:07,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 13:35:07,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:07,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:07,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:07,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:07,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 13:35:07,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:35:07,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-25 13:35:07,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:07,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:07,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:35:07,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:07,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 13:35:07,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:07,685 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 111 proven. 38 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 13:35:07,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304145520] [2020-09-25 13:35:07,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:35:07,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:35:07,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868412977] [2020-09-25 13:35:07,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:35:07,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:07,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:35:07,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:35:07,689 INFO L87 Difference]: Start difference. First operand 1497 states and 1758 transitions. Second operand 7 states. [2020-09-25 13:35:10,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:10,231 INFO L93 Difference]: Finished difference Result 2707 states and 3331 transitions. [2020-09-25 13:35:10,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:35:10,232 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 217 [2020-09-25 13:35:10,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:10,244 INFO L225 Difference]: With dead ends: 2707 [2020-09-25 13:35:10,244 INFO L226 Difference]: Without dead ends: 1863 [2020-09-25 13:35:10,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 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 13:35:10,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1863 states. [2020-09-25 13:35:10,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1863 to 1675. [2020-09-25 13:35:10,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1675 states. [2020-09-25 13:35:10,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1675 states to 1675 states and 1968 transitions. [2020-09-25 13:35:10,316 INFO L78 Accepts]: Start accepts. Automaton has 1675 states and 1968 transitions. Word has length 217 [2020-09-25 13:35:10,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:10,317 INFO L479 AbstractCegarLoop]: Abstraction has 1675 states and 1968 transitions. [2020-09-25 13:35:10,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:35:10,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1675 states and 1968 transitions. [2020-09-25 13:35:10,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-09-25 13:35:10,322 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:10,322 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 13:35:10,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:35:10,323 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:10,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:10,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1691089535, now seen corresponding path program 1 times [2020-09-25 13:35:10,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:10,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423028641] [2020-09-25 13:35:10,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:10,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:10,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:10,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:11,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:11,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:12,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:12,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:13,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:13,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:13,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:15,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:15,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-09-25 13:35:15,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 13:35:15,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 13:35:15,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:15,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:15,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:35:15,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:35:15,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 212 [2020-09-25 13:35:15,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:15,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:15,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:15,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:15,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:15,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:15,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:15,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 13:35:15,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:15,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:15,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:35:15,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:15,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:35:15,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:15,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:15,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:15,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:15,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:15,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:15,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:35:15,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:35:15,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-25 13:35:15,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:15,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:15,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:15,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:15,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 13:35:15,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:15,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 13:35:15,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:15,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:15,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:16,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:16,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 13:35:16,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:35:16,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-09-25 13:35:16,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:16,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:16,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:35:16,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:16,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 13:35:16,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:16,229 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-09-25 13:35:16,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423028641] [2020-09-25 13:35:16,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:35:16,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:35:16,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732510474] [2020-09-25 13:35:16,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:35:16,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:16,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:35:16,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:35:16,232 INFO L87 Difference]: Start difference. First operand 1675 states and 1968 transitions. Second operand 9 states. [2020-09-25 13:35:20,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:20,015 INFO L93 Difference]: Finished difference Result 3528 states and 4398 transitions. [2020-09-25 13:35:20,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 13:35:20,018 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 239 [2020-09-25 13:35:20,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:20,030 INFO L225 Difference]: With dead ends: 3528 [2020-09-25 13:35:20,030 INFO L226 Difference]: Without dead ends: 2482 [2020-09-25 13:35:20,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:35:20,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2482 states. [2020-09-25 13:35:20,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2482 to 2445. [2020-09-25 13:35:20,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2445 states. [2020-09-25 13:35:20,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2445 states to 2445 states and 2888 transitions. [2020-09-25 13:35:20,098 INFO L78 Accepts]: Start accepts. Automaton has 2445 states and 2888 transitions. Word has length 239 [2020-09-25 13:35:20,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:20,099 INFO L479 AbstractCegarLoop]: Abstraction has 2445 states and 2888 transitions. [2020-09-25 13:35:20,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:35:20,099 INFO L276 IsEmpty]: Start isEmpty. Operand 2445 states and 2888 transitions. [2020-09-25 13:35:20,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-09-25 13:35:20,104 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:20,105 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:35:20,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:35:20,105 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:20,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:20,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1657481291, now seen corresponding path program 1 times [2020-09-25 13:35:20,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:20,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794564733] [2020-09-25 13:35:20,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:20,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:20,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:20,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:20,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:20,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:21,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:24,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:25,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:25,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-09-25 13:35:25,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:35:25,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 13:35:25,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:25,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:25,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:35:25,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:35:25,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-09-25 13:35:25,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:35:25,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:25,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:25,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:25,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:25,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:25,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:25,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 13:35:25,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:25,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:25,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:35:25,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:25,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:35:25,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:35:25,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:25,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:25,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:25,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:25,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:25,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:35:25,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:35:25,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-25 13:35:25,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:25,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:25,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:35:25,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:25,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 13:35:25,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:35:25,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 13:35:25,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:25,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:25,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:25,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:25,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 13:35:25,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:35:25,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-09-25 13:35:25,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:25,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:25,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:35:25,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:25,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 13:35:25,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:25,882 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:35:25,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794564733] [2020-09-25 13:35:25,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:35:25,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 13:35:25,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339767968] [2020-09-25 13:35:25,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:35:25,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:25,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:35:25,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:35:25,885 INFO L87 Difference]: Start difference. First operand 2445 states and 2888 transitions. Second operand 11 states.