/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --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_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:57:29,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:57:29,295 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:57:29,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:57:29,329 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:57:29,338 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:57:29,339 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:57:29,342 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:57:29,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:57:29,347 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:57:29,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:57:29,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:57:29,351 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:57:29,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:57:29,358 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:57:29,360 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:57:29,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:57:29,363 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:57:29,365 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:57:29,372 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:57:29,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:57:29,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:57:29,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:57:29,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:57:29,394 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:57:29,394 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:57:29,394 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:57:29,395 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:57:29,396 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:57:29,397 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:57:29,399 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:57:29,400 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:57:29,401 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:57:29,405 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:57:29,406 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:57:29,406 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:57:29,407 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:57:29,410 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:57:29,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:57:29,411 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:57:29,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:57:29,415 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 07:57:29,465 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:57:29,466 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:57:29,467 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:57:29,467 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:57:29,467 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:57:29,469 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:57:29,469 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:57:29,469 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:57:29,469 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:57:29,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:57:29,470 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:57:29,470 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:57:29,470 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:57:29,470 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:57:29,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:57:29,470 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:57:29,472 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:57:29,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:57:29,472 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:57:29,472 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:57:29,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:57:29,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:57:29,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:57:29,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:57:29,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:57:29,474 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:57:29,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:57:29,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:57:29,474 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:57:29,474 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:57:29,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:57:29,957 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:57:29,963 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:57:29,965 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:57:29,966 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:57:29,967 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label54.c [2020-09-25 07:57:30,045 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9864608dd/c02ca3ac440f433c840463790742f0c1/FLAG9f941adb2 [2020-09-25 07:57:30,700 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:57:30,701 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label54.c [2020-09-25 07:57:30,717 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9864608dd/c02ca3ac440f433c840463790742f0c1/FLAG9f941adb2 [2020-09-25 07:57:30,937 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9864608dd/c02ca3ac440f433c840463790742f0c1 [2020-09-25 07:57:30,952 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:57:30,958 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:57:30,960 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:57:30,960 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:57:30,964 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:57:30,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:57:30" (1/1) ... [2020-09-25 07:57:30,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347c51ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:30, skipping insertion in model container [2020-09-25 07:57:30,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:57:30" (1/1) ... [2020-09-25 07:57:30,980 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:57:31,031 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:57:31,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:57:31,625 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:57:31,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:57:31,883 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:57:31,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:31 WrapperNode [2020-09-25 07:57:31,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:57:31,887 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:57:31,887 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:57:31,887 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:57:31,908 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:31" (1/1) ... [2020-09-25 07:57:31,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:31" (1/1) ... [2020-09-25 07:57:31,941 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:31" (1/1) ... [2020-09-25 07:57:31,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:31" (1/1) ... [2020-09-25 07:57:32,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:31" (1/1) ... [2020-09-25 07:57:32,032 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:31" (1/1) ... [2020-09-25 07:57:32,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:31" (1/1) ... [2020-09-25 07:57:32,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:57:32,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:57:32,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:57:32,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:57:32,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:31" (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 07:57:32,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:57:32,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:57:32,138 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:57:32,138 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:57:32,138 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:57:32,139 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:57:32,139 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:57:32,139 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:57:32,139 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:57:32,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:57:32,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:57:33,623 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:57:33,624 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:57:33,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:57:33 BoogieIcfgContainer [2020-09-25 07:57:33,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:57:33,634 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:57:33,634 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:57:33,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:57:33,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:57:30" (1/3) ... [2020-09-25 07:57:33,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b01f935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:57:33, skipping insertion in model container [2020-09-25 07:57:33,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:31" (2/3) ... [2020-09-25 07:57:33,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b01f935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:57:33, skipping insertion in model container [2020-09-25 07:57:33,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:57:33" (3/3) ... [2020-09-25 07:57:33,643 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label54.c [2020-09-25 07:57:33,657 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:57:33,669 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:57:33,697 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:57:33,738 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:57:33,738 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:57:33,739 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:57:33,739 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:57:33,739 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:57:33,739 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:57:33,739 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:57:33,739 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:57:33,776 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 07:57:33,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 07:57:33,791 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:33,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:57:33,793 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:33,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:33,803 INFO L82 PathProgramCache]: Analyzing trace with hash -2126243537, now seen corresponding path program 1 times [2020-09-25 07:57:33,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:33,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214183840] [2020-09-25 07:57:33,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:34,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:34,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:34,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:35,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:35,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 07:57:35,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:57:35,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1454 [2020-09-25 07:57:35,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:35,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:35,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:57:35,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:57:35,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 07:57:35,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:57:35,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:35,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:35,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:35,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:35,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:35,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:35,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 07:57:35,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:35,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:35,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:35,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:35,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:57:35,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:35,824 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 07:57:35,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214183840] [2020-09-25 07:57:35,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:57:35,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:57:35,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196554185] [2020-09-25 07:57:35,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:57:35,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:35,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:57:35,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:57:35,860 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 07:57:37,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:37,889 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 07:57:37,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:57:37,891 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2020-09-25 07:57:37,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:37,915 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 07:57:37,916 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 07:57:37,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:57:37,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 07:57:38,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 07:57:38,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 07:57:38,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 07:57:38,028 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 81 [2020-09-25 07:57:38,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:38,029 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 07:57:38,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:57:38,030 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 07:57:38,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 07:57:38,039 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:38,039 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, 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 07:57:38,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:57:38,040 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:38,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:38,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1687287808, now seen corresponding path program 1 times [2020-09-25 07:57:38,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:38,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911957885] [2020-09-25 07:57:38,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:38,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:38,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:38,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:38,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:38,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:39,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:39,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:43,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:43,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 07:57:43,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:57:43,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 07:57:43,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:43,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:43,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:43,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 07:57:43,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 07:57:43,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:43,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:43,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:43,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:43,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:43,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:43,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:43,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:57:43,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:43,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:43,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:57:43,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:43,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:57:43,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:43,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:43,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:43,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:43,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:43,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 07:57:43,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:43,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 07:57:43,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:43,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:43,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:43,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:43,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 07:57:43,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:43,476 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:57:43,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911957885] [2020-09-25 07:57:43,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:57:43,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:57:43,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107605503] [2020-09-25 07:57:43,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:57:43,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:43,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:57:43,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:57:43,481 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 07:57:45,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:45,092 INFO L93 Difference]: Finished difference Result 1224 states and 1530 transitions. [2020-09-25 07:57:45,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:57:45,093 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-09-25 07:57:45,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:45,099 INFO L225 Difference]: With dead ends: 1224 [2020-09-25 07:57:45,099 INFO L226 Difference]: Without dead ends: 695 [2020-09-25 07:57:45,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 07:57:45,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-09-25 07:57:45,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2020-09-25 07:57:45,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 07:57:45,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 07:57:45,158 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 160 [2020-09-25 07:57:45,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:45,160 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 07:57:45,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:57:45,161 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 07:57:45,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 07:57:45,176 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:45,176 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, 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] [2020-09-25 07:57:45,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:57:45,177 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:45,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:45,177 INFO L82 PathProgramCache]: Analyzing trace with hash 935848482, now seen corresponding path program 1 times [2020-09-25 07:57:45,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:45,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416189375] [2020-09-25 07:57:45,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:45,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:45,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:45,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:45,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:46,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:48,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:48,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:50,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:50,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 07:57:50,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:57:50,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 07:57:50,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:50,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:50,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:50,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 07:57:50,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 07:57:50,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:50,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:50,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:50,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:50,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:50,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:50,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:50,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:57:50,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:50,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:50,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:57:50,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:50,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:57:50,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:50,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:50,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:50,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:50,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:57:50,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:50,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 07:57:50,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:50,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:50,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:50,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:50,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 07:57:50,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:50,513 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:57:50,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416189375] [2020-09-25 07:57:50,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:57:50,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:57:50,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041940925] [2020-09-25 07:57:50,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:57:50,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:50,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:57:50,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:57:50,516 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 5 states. [2020-09-25 07:57:52,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:52,431 INFO L93 Difference]: Finished difference Result 1549 states and 1979 transitions. [2020-09-25 07:57:52,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:57:52,433 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-09-25 07:57:52,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:52,439 INFO L225 Difference]: With dead ends: 1549 [2020-09-25 07:57:52,440 INFO L226 Difference]: Without dead ends: 1019 [2020-09-25 07:57:52,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 07:57:52,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2020-09-25 07:57:52,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 999. [2020-09-25 07:57:52,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2020-09-25 07:57:52,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1219 transitions. [2020-09-25 07:57:52,474 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1219 transitions. Word has length 170 [2020-09-25 07:57:52,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:52,475 INFO L479 AbstractCegarLoop]: Abstraction has 999 states and 1219 transitions. [2020-09-25 07:57:52,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:57:52,475 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1219 transitions. [2020-09-25 07:57:52,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-25 07:57:52,478 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:52,478 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, 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] [2020-09-25 07:57:52,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:57:52,479 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:52,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:52,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1528839770, now seen corresponding path program 1 times [2020-09-25 07:57:52,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:52,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381129555] [2020-09-25 07:57:52,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:52,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:52,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:52,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:52,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:52,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:53,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:55,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:55,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-25 07:57:55,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:57:55,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3039 [2020-09-25 07:57:55,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:55,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:55,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:57:55,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 07:57:55,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 07:57:55,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:55,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:55,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:55,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:55,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:55,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:55,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:55,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:57:55,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:55,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:55,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:55,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:55,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:57:55,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:55,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:55,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:55,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:55,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:55,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 07:57:55,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:55,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-09-25 07:57:55,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:55,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:55,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:55,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:57:55,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 07:57:55,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:55,969 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:57:55,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381129555] [2020-09-25 07:57:55,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:57:55,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:57:55,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261790428] [2020-09-25 07:57:55,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:57:55,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:55,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:57:55,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:57:55,972 INFO L87 Difference]: Start difference. First operand 999 states and 1219 transitions. Second operand 7 states. [2020-09-25 07:57:58,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:58,033 INFO L93 Difference]: Finished difference Result 2183 states and 2765 transitions. [2020-09-25 07:57:58,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:57:58,039 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 172 [2020-09-25 07:57:58,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:58,049 INFO L225 Difference]: With dead ends: 2183 [2020-09-25 07:57:58,049 INFO L226 Difference]: Without dead ends: 1349 [2020-09-25 07:57:58,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:57:58,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2020-09-25 07:57:58,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 1327. [2020-09-25 07:57:58,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1327 states. [2020-09-25 07:57:58,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 1584 transitions. [2020-09-25 07:57:58,112 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 1584 transitions. Word has length 172 [2020-09-25 07:57:58,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:58,113 INFO L479 AbstractCegarLoop]: Abstraction has 1327 states and 1584 transitions. [2020-09-25 07:57:58,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:57:58,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 1584 transitions. [2020-09-25 07:57:58,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-09-25 07:57:58,118 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:58,119 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:57:58,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:57:58,119 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:58,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:58,119 INFO L82 PathProgramCache]: Analyzing trace with hash 620665156, now seen corresponding path program 1 times [2020-09-25 07:57:58,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:58,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453936924] [2020-09-25 07:57:58,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:58,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:58,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:58,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:58,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:58,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:58,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:00,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:01,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:02,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:02,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:03,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:03,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:03,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-09-25 07:58:03,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 07:58:03,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-09-25 07:58:03,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:03,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:03,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:58:03,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 07:58:03,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 07:58:03,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:03,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:58:03,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:03,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:03,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:03,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:58:03,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:03,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 07:58:03,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:03,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:03,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:58:03,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:03,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:58:03,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:58:03,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:58:03,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:03,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:03,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:03,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:58:03,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:03,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 07:58:03,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:03,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:03,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:58:03,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:03,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 07:58:03,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:03,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 07:58:03,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:03,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:04,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:04,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:04,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 07:58:04,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:58:04,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 420 [2020-09-25 07:58:04,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:04,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:04,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:58:04,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:04,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 07:58:04,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:04,484 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 138 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-09-25 07:58:04,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453936924] [2020-09-25 07:58:04,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:58:04,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:58:04,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818973594] [2020-09-25 07:58:04,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:58:04,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:58:04,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:58:04,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:58:04,487 INFO L87 Difference]: Start difference. First operand 1327 states and 1584 transitions. Second operand 9 states. [2020-09-25 07:58:08,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:58:08,986 INFO L93 Difference]: Finished difference Result 3460 states and 4424 transitions. [2020-09-25 07:58:08,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 07:58:08,987 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 253 [2020-09-25 07:58:08,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:58:09,000 INFO L225 Difference]: With dead ends: 3460 [2020-09-25 07:58:09,000 INFO L226 Difference]: Without dead ends: 2279 [2020-09-25 07:58:09,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-09-25 07:58:09,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2279 states. [2020-09-25 07:58:09,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2279 to 2096. [2020-09-25 07:58:09,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2096 states. [2020-09-25 07:58:09,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 2493 transitions. [2020-09-25 07:58:09,071 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 2493 transitions. Word has length 253 [2020-09-25 07:58:09,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:58:09,072 INFO L479 AbstractCegarLoop]: Abstraction has 2096 states and 2493 transitions. [2020-09-25 07:58:09,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:58:09,072 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 2493 transitions. [2020-09-25 07:58:09,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-09-25 07:58:09,078 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:58:09,079 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:58:09,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:58:09,079 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:58:09,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:58:09,080 INFO L82 PathProgramCache]: Analyzing trace with hash 420038777, now seen corresponding path program 1 times [2020-09-25 07:58:09,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:58:09,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082797545] [2020-09-25 07:58:09,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:58:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:09,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:09,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:09,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:09,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:11,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:12,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:13,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:13,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:14,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:14,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-09-25 07:58:14,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:58:14,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-25 07:58:14,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:14,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:14,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:58:14,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 07:58:14,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-09-25 07:58:14,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:14,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:58:14,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:14,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:14,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:14,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:58:14,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:14,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 07:58:14,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:14,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:14,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:58:14,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:14,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:58:14,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:14,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:58:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:14,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:14,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:14,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 07:58:14,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:14,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 07:58:14,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:14,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:14,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:58:14,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:14,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 07:58:14,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:14,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 07:58:14,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:14,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:14,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:14,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 07:58:14,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:14,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 07:58:14,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:14,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:14,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:58:14,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:58:14,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 07:58:14,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:58:14,764 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 203 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:58:14,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1082797545] [2020-09-25 07:58:14,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:58:14,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:58:14,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474350890] [2020-09-25 07:58:14,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:58:14,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:58:14,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:58:14,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:58:14,768 INFO L87 Difference]: Start difference. First operand 2096 states and 2493 transitions. Second operand 8 states.