/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_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:33:41,405 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:33:41,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:33:41,436 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:33:41,436 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:33:41,437 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:33:41,439 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:33:41,441 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:33:41,443 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:33:41,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:33:41,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:33:41,446 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:33:41,446 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:33:41,448 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:33:41,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:33:41,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:33:41,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:33:41,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:33:41,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:33:41,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:33:41,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:33:41,459 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:33:41,460 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:33:41,461 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:33:41,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:33:41,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:33:41,464 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:33:41,465 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:33:41,466 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:33:41,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:33:41,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:33:41,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:33:41,469 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:33:41,470 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:33:41,471 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:33:41,471 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:33:41,472 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:33:41,472 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:33:41,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:33:41,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:33:41,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:33:41,475 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 13:33:41,509 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:33:41,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:33:41,511 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:33:41,511 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:33:41,511 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:33:41,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:33:41,511 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:33:41,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:33:41,512 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:33:41,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:33:41,512 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:33:41,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:33:41,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:33:41,513 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:33:41,513 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:33:41,513 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:33:41,513 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:33:41,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:33:41,517 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:33:41,517 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:33:41,517 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:33:41,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:33:41,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:33:41,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:33:41,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:33:41,520 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:33:41,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:33:41,520 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:33:41,521 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:33:41,521 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 13:33:41,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:33:42,003 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:33:42,008 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:33:42,009 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:33:42,010 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:33:42,011 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label07.c [2020-09-25 13:33:42,091 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2adbbb1fa/b77f41829e7e44008aaf9d529419bbe7/FLAGeb0d9d77f [2020-09-25 13:33:42,708 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:33:42,709 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label07.c [2020-09-25 13:33:42,721 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2adbbb1fa/b77f41829e7e44008aaf9d529419bbe7/FLAGeb0d9d77f [2020-09-25 13:33:42,941 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2adbbb1fa/b77f41829e7e44008aaf9d529419bbe7 [2020-09-25 13:33:42,952 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:33:42,959 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:33:42,960 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:33:42,961 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:33:42,965 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:33:42,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:33:42" (1/1) ... [2020-09-25 13:33:42,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d064956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:42, skipping insertion in model container [2020-09-25 13:33:42,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:33:42" (1/1) ... [2020-09-25 13:33:42,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:33:43,051 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:33:43,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:33:43,495 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:33:43,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:33:43,751 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:33:43,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:43 WrapperNode [2020-09-25 13:33:43,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:33:43,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:33:43,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:33:43,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:33:43,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:43" (1/1) ... [2020-09-25 13:33:43,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:43" (1/1) ... [2020-09-25 13:33:43,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:43" (1/1) ... [2020-09-25 13:33:43,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:43" (1/1) ... [2020-09-25 13:33:43,824 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:43" (1/1) ... [2020-09-25 13:33:43,841 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:43" (1/1) ... [2020-09-25 13:33:43,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:43" (1/1) ... [2020-09-25 13:33:43,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:33:43,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:33:43,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:33:43,860 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:33:43,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:43" (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 13:33:43,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:33:43,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:33:43,935 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:33:43,935 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:33:43,935 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:33:43,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:33:43,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:33:43,936 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:33:43,936 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:33:43,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:33:43,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:33:45,410 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:33:45,410 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:33:45,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:33:45 BoogieIcfgContainer [2020-09-25 13:33:45,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:33:45,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:33:45,421 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:33:45,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:33:45,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:33:42" (1/3) ... [2020-09-25 13:33:45,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@534177e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:33:45, skipping insertion in model container [2020-09-25 13:33:45,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:43" (2/3) ... [2020-09-25 13:33:45,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@534177e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:33:45, skipping insertion in model container [2020-09-25 13:33:45,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:33:45" (3/3) ... [2020-09-25 13:33:45,429 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label07.c [2020-09-25 13:33:45,441 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:33:45,453 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:33:45,479 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:33:45,518 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:33:45,519 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:33:45,519 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:33:45,520 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:33:45,520 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:33:45,520 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:33:45,520 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:33:45,520 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:33:45,559 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 13:33:45,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 13:33:45,572 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:45,574 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] [2020-09-25 13:33:45,575 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:45,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:45,583 INFO L82 PathProgramCache]: Analyzing trace with hash -843476993, now seen corresponding path program 1 times [2020-09-25 13:33:45,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:45,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662152597] [2020-09-25 13:33:45,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:45,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:45,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:46,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:46,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:46,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:46,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 13:33:46,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:33:46,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 858 [2020-09-25 13:33:46,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:46,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:46,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:33:46,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:33:46,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 13:33:46,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 13:33:46,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:46,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:46,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:46,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:46,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:33:46,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:46,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 13:33:46,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:46,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:46,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:46,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:46,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:33:46,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:46,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:33:46,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662152597] [2020-09-25 13:33:46,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:33:46,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:33:46,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780429931] [2020-09-25 13:33:46,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:33:46,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:46,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:33:46,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:33:46,926 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 13:33:49,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:49,382 INFO L93 Difference]: Finished difference Result 1226 states and 1798 transitions. [2020-09-25 13:33:49,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:33:49,384 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-09-25 13:33:49,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:49,411 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 13:33:49,411 INFO L226 Difference]: Without dead ends: 707 [2020-09-25 13:33:49,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:33:49,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-25 13:33:49,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 695. [2020-09-25 13:33:49,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 13:33:49,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 902 transitions. [2020-09-25 13:33:49,532 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 902 transitions. Word has length 64 [2020-09-25 13:33:49,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:49,533 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 902 transitions. [2020-09-25 13:33:49,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:33:49,533 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 902 transitions. [2020-09-25 13:33:49,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 13:33:49,543 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:49,543 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, 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] [2020-09-25 13:33:49,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:33:49,544 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:49,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:49,545 INFO L82 PathProgramCache]: Analyzing trace with hash -685131667, now seen corresponding path program 1 times [2020-09-25 13:33:49,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:49,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238293193] [2020-09-25 13:33:49,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:49,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:49,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:49,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:49,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:50,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:51,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:52,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:52,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:52,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:54,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:54,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 13:33:54,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:33:54,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:33:54,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:54,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:54,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:33:54,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:33:54,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-09-25 13:33:54,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:54,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:54,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:54,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:54,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:54,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:33:54,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:54,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 13:33:54,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:54,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:54,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:54,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:54,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:33:54,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:54,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:33:54,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:54,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:55,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:55,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:33:55,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:55,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-09-25 13:33:55,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:55,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:55,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:33:55,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:33:55,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:33:55,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:55,224 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 7 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:33:55,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238293193] [2020-09-25 13:33:55,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:55,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:33:55,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692015808] [2020-09-25 13:33:55,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:33:55,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:55,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:33:55,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:33:55,230 INFO L87 Difference]: Start difference. First operand 695 states and 902 transitions. Second operand 8 states. [2020-09-25 13:33:58,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:58,069 INFO L93 Difference]: Finished difference Result 2492 states and 3498 transitions. [2020-09-25 13:33:58,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:33:58,070 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 153 [2020-09-25 13:33:58,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:58,094 INFO L225 Difference]: With dead ends: 2492 [2020-09-25 13:33:58,095 INFO L226 Difference]: Without dead ends: 1812 [2020-09-25 13:33:58,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:33:58,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1812 states. [2020-09-25 13:33:58,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1812 to 1363. [2020-09-25 13:33:58,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1363 states. [2020-09-25 13:33:58,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1798 transitions. [2020-09-25 13:33:58,210 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1798 transitions. Word has length 153 [2020-09-25 13:33:58,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:58,215 INFO L479 AbstractCegarLoop]: Abstraction has 1363 states and 1798 transitions. [2020-09-25 13:33:58,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:33:58,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1798 transitions. [2020-09-25 13:33:58,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 13:33:58,229 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:58,229 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, 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] [2020-09-25 13:33:58,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:33:58,230 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:58,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:58,230 INFO L82 PathProgramCache]: Analyzing trace with hash -188026709, now seen corresponding path program 1 times [2020-09-25 13:33:58,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:58,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056348392] [2020-09-25 13:33:58,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:58,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:58,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:58,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:59,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:59,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:00,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:01,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:01,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:03,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:03,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 13:34:03,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:34:03,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 13:34:03,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:03,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:03,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:34:03,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:34:03,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 13:34:03,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:34:03,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:03,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:03,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:03,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:03,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:03,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:03,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:34:03,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:03,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:03,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:03,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:03,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:34:03,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:03,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:03,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:03,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:03,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:03,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 13:34:03,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:03,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-25 13:34:03,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:03,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:03,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:34:03,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:03,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 13:34:03,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:03,687 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:34:03,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056348392] [2020-09-25 13:34:03,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:34:03,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:34:03,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595794117] [2020-09-25 13:34:03,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:34:03,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:03,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:34:03,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:34:03,693 INFO L87 Difference]: Start difference. First operand 1363 states and 1798 transitions. Second operand 7 states. [2020-09-25 13:34:05,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:05,880 INFO L93 Difference]: Finished difference Result 3461 states and 4758 transitions. [2020-09-25 13:34:05,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:34:05,881 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 156 [2020-09-25 13:34:05,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:05,903 INFO L225 Difference]: With dead ends: 3461 [2020-09-25 13:34:05,904 INFO L226 Difference]: Without dead ends: 2113 [2020-09-25 13:34:05,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:34:05,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2113 states. [2020-09-25 13:34:06,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2113 to 2024. [2020-09-25 13:34:06,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2024 states. [2020-09-25 13:34:06,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2024 states to 2024 states and 2736 transitions. [2020-09-25 13:34:06,029 INFO L78 Accepts]: Start accepts. Automaton has 2024 states and 2736 transitions. Word has length 156 [2020-09-25 13:34:06,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:06,031 INFO L479 AbstractCegarLoop]: Abstraction has 2024 states and 2736 transitions. [2020-09-25 13:34:06,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:34:06,032 INFO L276 IsEmpty]: Start isEmpty. Operand 2024 states and 2736 transitions. [2020-09-25 13:34:06,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 13:34:06,041 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:06,042 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, 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] [2020-09-25 13:34:06,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:34:06,043 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:06,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:06,043 INFO L82 PathProgramCache]: Analyzing trace with hash 370694072, now seen corresponding path program 1 times [2020-09-25 13:34:06,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:06,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193418708] [2020-09-25 13:34:06,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:06,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:06,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:06,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:06,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:06,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:07,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:07,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:11,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:11,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-25 13:34:11,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:34:11,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-09-25 13:34:11,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:11,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:11,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:34:11,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:34:11,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 13:34:11,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:11,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:11,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:11,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:11,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:11,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:11,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:11,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:34:11,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:11,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:11,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:11,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:11,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:34:11,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:11,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:11,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:11,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:11,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 13:34:11,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:11,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-09-25 13:34:11,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:11,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:11,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:34:11,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:11,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 13:34:11,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:11,826 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:34:11,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193418708] [2020-09-25 13:34:11,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:34:11,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:34:11,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521324090] [2020-09-25 13:34:11,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:34:11,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:11,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:34:11,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:34:11,836 INFO L87 Difference]: Start difference. First operand 2024 states and 2736 transitions. Second operand 7 states. [2020-09-25 13:34:13,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:13,815 INFO L93 Difference]: Finished difference Result 3922 states and 5343 transitions. [2020-09-25 13:34:13,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 13:34:13,816 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 193 [2020-09-25 13:34:13,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:13,828 INFO L225 Difference]: With dead ends: 3922 [2020-09-25 13:34:13,828 INFO L226 Difference]: Without dead ends: 2063 [2020-09-25 13:34:13,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:34:13,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2063 states. [2020-09-25 13:34:13,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2063 to 2034. [2020-09-25 13:34:13,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2034 states. [2020-09-25 13:34:13,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2034 states to 2034 states and 2768 transitions. [2020-09-25 13:34:13,898 INFO L78 Accepts]: Start accepts. Automaton has 2034 states and 2768 transitions. Word has length 193 [2020-09-25 13:34:13,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:13,898 INFO L479 AbstractCegarLoop]: Abstraction has 2034 states and 2768 transitions. [2020-09-25 13:34:13,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:34:13,899 INFO L276 IsEmpty]: Start isEmpty. Operand 2034 states and 2768 transitions. [2020-09-25 13:34:13,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-09-25 13:34:13,905 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:13,905 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:34:13,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:34:13,905 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:13,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:13,906 INFO L82 PathProgramCache]: Analyzing trace with hash 858722410, now seen corresponding path program 1 times [2020-09-25 13:34:13,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:13,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [820124535] [2020-09-25 13:34:13,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:13,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:14,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:14,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:14,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:14,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:19,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:19,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:19,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-09-25 13:34:19,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:34:19,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5103 [2020-09-25 13:34:19,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:19,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:19,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:34:19,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:34:19,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-25 13:34:19,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:19,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:19,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:19,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:19,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:19,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:19,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:19,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:34:19,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:19,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:19,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:19,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:19,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:34:19,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:19,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:19,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:19,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:19,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:19,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 13:34:19,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:19,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 345 [2020-09-25 13:34:19,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:19,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:19,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:34:19,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:19,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 13:34:19,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:19,869 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:34:19,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [820124535] [2020-09-25 13:34:19,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:34:19,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 13:34:19,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352496393] [2020-09-25 13:34:19,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:34:19,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:19,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:34:19,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:34:19,876 INFO L87 Difference]: Start difference. First operand 2034 states and 2768 transitions. Second operand 8 states. [2020-09-25 13:34:22,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:22,490 INFO L93 Difference]: Finished difference Result 6267 states and 9121 transitions. [2020-09-25 13:34:22,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 13:34:22,491 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 210 [2020-09-25 13:34:22,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:22,518 INFO L225 Difference]: With dead ends: 6267 [2020-09-25 13:34:22,519 INFO L226 Difference]: Without dead ends: 4398 [2020-09-25 13:34:22,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:34:22,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4398 states. [2020-09-25 13:34:22,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4398 to 4058. [2020-09-25 13:34:22,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4058 states. [2020-09-25 13:34:22,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4058 states to 4058 states and 5426 transitions. [2020-09-25 13:34:22,648 INFO L78 Accepts]: Start accepts. Automaton has 4058 states and 5426 transitions. Word has length 210 [2020-09-25 13:34:22,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:22,649 INFO L479 AbstractCegarLoop]: Abstraction has 4058 states and 5426 transitions. [2020-09-25 13:34:22,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:34:22,649 INFO L276 IsEmpty]: Start isEmpty. Operand 4058 states and 5426 transitions. [2020-09-25 13:34:22,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-09-25 13:34:22,655 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:22,655 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:34:22,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:34:22,656 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:22,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:22,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1595178403, now seen corresponding path program 1 times [2020-09-25 13:34:22,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:22,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283351597] [2020-09-25 13:34:22,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:22,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:22,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:22,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:23,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:23,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:24,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:24,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:25,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:27,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:27,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-09-25 13:34:27,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:34:27,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 13:34:27,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:27,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:27,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:34:27,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:34:27,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 13:34:27,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:27,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:27,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:27,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:27,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:27,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:27,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:34:27,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:27,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:27,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:27,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:27,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:34:27,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:27,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:27,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:27,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:27,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:27,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:34:27,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:27,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-25 13:34:27,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:27,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:27,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:34:27,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:27,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 13:34:27,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:28,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 13:34:28,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:28,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:28,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:28,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:34:28,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:28,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-25 13:34:28,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:28,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:28,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:34:28,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:28,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:34:28,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:28,329 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 13:34:28,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283351597] [2020-09-25 13:34:28,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:28,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:34:28,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456179274] [2020-09-25 13:34:28,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:34:28,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:28,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:34:28,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:34:28,332 INFO L87 Difference]: Start difference. First operand 4058 states and 5426 transitions. Second operand 9 states.