/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=1.0 --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_label32.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:05:36,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:05:36,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:05:36,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:05:36,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:05:36,350 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:05:36,351 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:05:36,355 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:05:36,357 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:05:36,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:05:36,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:05:36,363 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:05:36,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:05:36,368 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:05:36,371 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:05:36,372 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:05:36,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:05:36,377 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:05:36,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:05:36,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:05:36,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:05:36,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:05:36,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:05:36,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:05:36,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:05:36,399 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:05:36,399 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:05:36,402 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:05:36,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:05:36,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:05:36,405 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:05:36,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:05:36,406 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:05:36,407 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:05:36,409 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:05:36,409 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:05:36,410 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:05:36,411 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:05:36,411 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:05:36,412 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:05:36,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:05:36,414 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 09:05:36,466 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:05:36,466 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:05:36,469 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:05:36,469 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:05:36,469 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:05:36,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:05:36,470 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:05:36,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:05:36,471 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:05:36,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:05:36,472 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:05:36,472 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:05:36,472 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:05:36,473 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:05:36,473 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:05:36,473 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:05:36,473 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:05:36,474 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:05:36,474 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:05:36,474 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:05:36,474 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:05:36,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:05:36,475 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:05:36,475 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:05:36,475 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:05:36,475 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:05:36,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:05:36,476 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:05:36,476 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:05:36,476 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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-09-25 09:05:36,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:05:36,970 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:05:36,975 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:05:36,976 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:05:36,977 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:05:36,978 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label32.c [2020-09-25 09:05:37,061 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b43229381/725b0a969bfe4ebf832631864bc3ae7d/FLAGdaffa7368 [2020-09-25 09:05:37,712 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:05:37,713 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label32.c [2020-09-25 09:05:37,730 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b43229381/725b0a969bfe4ebf832631864bc3ae7d/FLAGdaffa7368 [2020-09-25 09:05:37,913 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b43229381/725b0a969bfe4ebf832631864bc3ae7d [2020-09-25 09:05:37,927 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:05:37,933 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:05:37,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:05:37,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:05:37,938 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:05:37,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:05:37" (1/1) ... [2020-09-25 09:05:37,944 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c5f9fa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:37, skipping insertion in model container [2020-09-25 09:05:37,944 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:05:37" (1/1) ... [2020-09-25 09:05:37,954 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:05:38,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:05:38,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:05:38,492 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:05:38,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:05:38,762 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:05:38,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:38 WrapperNode [2020-09-25 09:05:38,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:05:38,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:05:38,765 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:05:38,765 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:05:38,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:38" (1/1) ... [2020-09-25 09:05:38,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:38" (1/1) ... [2020-09-25 09:05:38,807 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:38" (1/1) ... [2020-09-25 09:05:38,807 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:38" (1/1) ... [2020-09-25 09:05:38,868 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:38" (1/1) ... [2020-09-25 09:05:38,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:38" (1/1) ... [2020-09-25 09:05:38,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:38" (1/1) ... [2020-09-25 09:05:38,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:05:38,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:05:38,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:05:38,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:05:38,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:38" (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 09:05:38,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:05:38,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:05:38,999 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:05:38,999 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:05:39,000 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:05:39,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:05:39,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:05:39,002 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:05:39,002 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:05:39,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:05:39,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:05:40,498 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:05:40,498 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:05:40,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:05:40 BoogieIcfgContainer [2020-09-25 09:05:40,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:05:40,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:05:40,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:05:40,514 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:05:40,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:05:37" (1/3) ... [2020-09-25 09:05:40,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7035905d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:05:40, skipping insertion in model container [2020-09-25 09:05:40,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:38" (2/3) ... [2020-09-25 09:05:40,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7035905d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:05:40, skipping insertion in model container [2020-09-25 09:05:40,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:05:40" (3/3) ... [2020-09-25 09:05:40,519 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label32.c [2020-09-25 09:05:40,532 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:05:40,544 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:05:40,569 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:05:40,604 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:05:40,604 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:05:40,605 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:05:40,605 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:05:40,605 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:05:40,605 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:05:40,605 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:05:40,606 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:05:40,637 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 09:05:40,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-25 09:05:40,646 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:40,648 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] [2020-09-25 09:05:40,648 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:40,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:40,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1927363665, now seen corresponding path program 1 times [2020-09-25 09:05:40,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:40,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086755843] [2020-09-25 09:05:40,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:40,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:40,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:41,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:41,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:41,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 09:05:41,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:41,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 720 [2020-09-25 09:05:41,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:41,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:41,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:05:41,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:05:41,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 09:05:41,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 09:05:41,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:41,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:41,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:41,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:41,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:41,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:41,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 09:05:41,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:41,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:41,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:41,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:41,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:05:41,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:41,754 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 09:05:41,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086755843] [2020-09-25 09:05:41,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:05:41,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:05:41,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724335073] [2020-09-25 09:05:41,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:05:41,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:41,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:05:41,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:05:41,789 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 09:05:43,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:43,765 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 09:05:43,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:05:43,768 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-09-25 09:05:43,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:43,801 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 09:05:43,802 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 09:05:43,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:05:43,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 09:05:43,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 09:05:43,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 09:05:43,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 09:05:43,943 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 44 [2020-09-25 09:05:43,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:43,944 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 09:05:43,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:05:43,945 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 09:05:43,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-09-25 09:05:43,951 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:43,952 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:43,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:05:43,953 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:43,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:43,953 INFO L82 PathProgramCache]: Analyzing trace with hash -739682472, now seen corresponding path program 1 times [2020-09-25 09:05:43,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:43,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567581708] [2020-09-25 09:05:43,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:43,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:44,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:44,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:44,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:44,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:45,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:45,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:45,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-25 09:05:45,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:05:45,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1872 [2020-09-25 09:05:45,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:45,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:45,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:05:45,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 09:05:45,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 09:05:45,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:45,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:45,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:45,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:46,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:46,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:46,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:46,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 09:05:46,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:46,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:46,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:46,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:46,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:05:46,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:46,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:46,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:46,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:46,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:46,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:46,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 09:05:46,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:46,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-25 09:05:46,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:46,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:46,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:46,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:05:46,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 09:05:46,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:46,327 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:05:46,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567581708] [2020-09-25 09:05:46,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:46,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:05:46,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838518232] [2020-09-25 09:05:46,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:05:46,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:46,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:05:46,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:05:46,332 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 6 states. [2020-09-25 09:05:48,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:48,470 INFO L93 Difference]: Finished difference Result 1437 states and 1858 transitions. [2020-09-25 09:05:48,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:05:48,470 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2020-09-25 09:05:48,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:48,477 INFO L225 Difference]: With dead ends: 1437 [2020-09-25 09:05:48,478 INFO L226 Difference]: Without dead ends: 909 [2020-09-25 09:05:48,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:05:48,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2020-09-25 09:05:48,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 859. [2020-09-25 09:05:48,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 859 states. [2020-09-25 09:05:48,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1029 transitions. [2020-09-25 09:05:48,525 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1029 transitions. Word has length 124 [2020-09-25 09:05:48,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:48,526 INFO L479 AbstractCegarLoop]: Abstraction has 859 states and 1029 transitions. [2020-09-25 09:05:48,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:05:48,527 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1029 transitions. [2020-09-25 09:05:48,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 09:05:48,530 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:48,530 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:48,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:05:48,530 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:48,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:48,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1991578147, now seen corresponding path program 1 times [2020-09-25 09:05:48,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:48,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209495284] [2020-09-25 09:05:48,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:48,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:48,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:48,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:48,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:48,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:49,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:50,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:51,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:51,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:53,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:53,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 09:05:53,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:05:53,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4603 [2020-09-25 09:05:53,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:53,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:53,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:05:53,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 09:05:53,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 09:05:53,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:53,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:53,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:53,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:53,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:53,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:53,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 09:05:53,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:53,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:53,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:05:53,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:53,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:05:53,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:53,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:53,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:53,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:53,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:53,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:05:53,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:53,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 09:05:53,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:53,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:53,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:05:53,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:53,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 09:05:53,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:53,510 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:05:53,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209495284] [2020-09-25 09:05:53,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:53,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:05:53,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834678554] [2020-09-25 09:05:53,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:05:53,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:53,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:05:53,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:05:53,514 INFO L87 Difference]: Start difference. First operand 859 states and 1029 transitions. Second operand 6 states. [2020-09-25 09:05:56,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:56,552 INFO L93 Difference]: Finished difference Result 2863 states and 3612 transitions. [2020-09-25 09:05:56,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:05:56,554 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2020-09-25 09:05:56,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:56,570 INFO L225 Difference]: With dead ends: 2863 [2020-09-25 09:05:56,571 INFO L226 Difference]: Without dead ends: 2019 [2020-09-25 09:05:56,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:05:56,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2020-09-25 09:05:56,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 1649. [2020-09-25 09:05:56,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1649 states. [2020-09-25 09:05:56,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 2084 transitions. [2020-09-25 09:05:56,676 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 2084 transitions. Word has length 133 [2020-09-25 09:05:56,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:56,678 INFO L479 AbstractCegarLoop]: Abstraction has 1649 states and 2084 transitions. [2020-09-25 09:05:56,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:05:56,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 2084 transitions. [2020-09-25 09:05:56,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-25 09:05:56,690 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:56,691 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:05:56,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:05:56,691 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:56,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:56,692 INFO L82 PathProgramCache]: Analyzing trace with hash -718653912, now seen corresponding path program 1 times [2020-09-25 09:05:56,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:56,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329829500] [2020-09-25 09:05:56,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:56,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:56,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:56,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:57,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:57,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:57,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:59,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:59,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:59,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:00,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:00,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-09-25 09:06:00,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:06:00,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4018 [2020-09-25 09:06:00,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:00,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:00,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:06:00,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 09:06:00,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 09:06:00,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:00,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:00,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:00,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:00,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:00,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:00,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:00,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 09:06:00,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:00,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:00,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:06:00,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:00,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:06:00,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:00,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:00,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:00,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:01,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:01,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 09:06:01,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:01,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-25 09:06:01,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:01,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:01,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:06:01,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:01,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 09:06:01,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:01,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 09:06:01,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:01,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:01,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:01,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:01,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 09:06:01,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:06:01,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-09-25 09:06:01,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:01,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:01,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:01,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:06:01,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 09:06:01,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:01,478 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 97 proven. 24 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 09:06:01,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [329829500] [2020-09-25 09:06:01,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:01,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:06:01,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346255513] [2020-09-25 09:06:01,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:06:01,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:01,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:06:01,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:06:01,484 INFO L87 Difference]: Start difference. First operand 1649 states and 2084 transitions. Second operand 8 states. [2020-09-25 09:06:04,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:04,738 INFO L93 Difference]: Finished difference Result 4595 states and 6031 transitions. [2020-09-25 09:06:04,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:06:04,745 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 203 [2020-09-25 09:06:04,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:04,763 INFO L225 Difference]: With dead ends: 4595 [2020-09-25 09:06:04,763 INFO L226 Difference]: Without dead ends: 2961 [2020-09-25 09:06:04,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-25 09:06:04,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2020-09-25 09:06:04,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 2906. [2020-09-25 09:06:04,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2906 states. [2020-09-25 09:06:04,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2906 states to 2906 states and 3722 transitions. [2020-09-25 09:06:04,852 INFO L78 Accepts]: Start accepts. Automaton has 2906 states and 3722 transitions. Word has length 203 [2020-09-25 09:06:04,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:04,853 INFO L479 AbstractCegarLoop]: Abstraction has 2906 states and 3722 transitions. [2020-09-25 09:06:04,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:06:04,853 INFO L276 IsEmpty]: Start isEmpty. Operand 2906 states and 3722 transitions. [2020-09-25 09:06:04,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-09-25 09:06:04,858 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:04,859 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 09:06:04,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:06:04,859 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:04,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:04,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1157417370, now seen corresponding path program 1 times [2020-09-25 09:06:04,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:04,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065763284] [2020-09-25 09:06:04,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:04,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:04,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:05,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:05,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:05,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:07,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:07,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:07,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:08,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:08,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:09,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:09,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-09-25 09:06:09,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 09:06:09,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 09:06:09,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:09,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:09,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:06:09,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 09:06:09,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 09:06:09,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:10,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:10,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:10,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:10,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:10,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:10,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:10,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 09:06:10,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:10,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:10,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:06:10,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:10,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:06:10,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:10,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:10,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:10,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:10,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:10,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:06:10,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:10,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-25 09:06:10,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:10,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:10,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:10,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:10,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 09:06:10,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:10,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 09:06:10,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:10,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:10,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:10,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 09:06:10,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:10,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-25 09:06:10,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:10,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:10,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:10,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:06:10,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 09:06:10,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:10,791 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:06:10,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065763284] [2020-09-25 09:06:10,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:10,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 09:06:10,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804137114] [2020-09-25 09:06:10,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 09:06:10,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:10,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 09:06:10,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 09:06:10,796 INFO L87 Difference]: Start difference. First operand 2906 states and 3722 transitions. Second operand 9 states. [2020-09-25 09:06:15,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:15,568 INFO L93 Difference]: Finished difference Result 6183 states and 7945 transitions. [2020-09-25 09:06:15,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 09:06:15,572 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 216 [2020-09-25 09:06:15,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:15,592 INFO L225 Difference]: With dead ends: 6183 [2020-09-25 09:06:15,592 INFO L226 Difference]: Without dead ends: 3442 [2020-09-25 09:06:15,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2020-09-25 09:06:15,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3442 states. [2020-09-25 09:06:15,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3442 to 3220. [2020-09-25 09:06:15,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3220 states. [2020-09-25 09:06:15,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3220 states to 3220 states and 4085 transitions. [2020-09-25 09:06:15,701 INFO L78 Accepts]: Start accepts. Automaton has 3220 states and 4085 transitions. Word has length 216 [2020-09-25 09:06:15,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:15,702 INFO L479 AbstractCegarLoop]: Abstraction has 3220 states and 4085 transitions. [2020-09-25 09:06:15,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 09:06:15,702 INFO L276 IsEmpty]: Start isEmpty. Operand 3220 states and 4085 transitions. [2020-09-25 09:06:15,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-09-25 09:06:15,707 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:15,707 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 09:06:15,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:06:15,708 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:15,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:15,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1961292051, now seen corresponding path program 1 times [2020-09-25 09:06:15,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:15,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884587201] [2020-09-25 09:06:15,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:15,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:15,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:16,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:16,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:16,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:19,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:20,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:20,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-09-25 09:06:20,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:06:20,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 09:06:20,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:20,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:20,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:20,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 09:06:20,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 09:06:20,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:20,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:20,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:20,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:20,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:20,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:20,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:20,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 09:06:20,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:20,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:20,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:06:20,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:20,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:06:20,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:06:20,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:20,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:20,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:21,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:21,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:06:21,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:21,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-25 09:06:21,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:21,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:21,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:21,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:21,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 09:06:21,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:06:21,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 09:06:21,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:21,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:21,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:21,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 09:06:21,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:21,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-09-25 09:06:21,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:21,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:21,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:21,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:06:21,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 09:06:21,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:21,434 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 138 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:06:21,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884587201] [2020-09-25 09:06:21,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:21,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:06:21,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141737910] [2020-09-25 09:06:21,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:06:21,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:21,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:06:21,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:06:21,438 INFO L87 Difference]: Start difference. First operand 3220 states and 4085 transitions. Second operand 8 states. [2020-09-25 09:06:24,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:24,998 INFO L93 Difference]: Finished difference Result 8401 states and 10934 transitions. [2020-09-25 09:06:25,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:06:25,003 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 227 [2020-09-25 09:06:25,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:25,025 INFO L225 Difference]: With dead ends: 8401 [2020-09-25 09:06:25,025 INFO L226 Difference]: Without dead ends: 4400 [2020-09-25 09:06:25,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-09-25 09:06:25,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4400 states. [2020-09-25 09:06:25,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4400 to 2586. [2020-09-25 09:06:25,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2586 states. [2020-09-25 09:06:25,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2586 states to 2586 states and 2976 transitions. [2020-09-25 09:06:25,123 INFO L78 Accepts]: Start accepts. Automaton has 2586 states and 2976 transitions. Word has length 227 [2020-09-25 09:06:25,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:25,124 INFO L479 AbstractCegarLoop]: Abstraction has 2586 states and 2976 transitions. [2020-09-25 09:06:25,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:06:25,124 INFO L276 IsEmpty]: Start isEmpty. Operand 2586 states and 2976 transitions. [2020-09-25 09:06:25,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-09-25 09:06:25,129 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:25,129 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 09:06:25,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 09:06:25,130 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:25,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:25,130 INFO L82 PathProgramCache]: Analyzing trace with hash -647992022, now seen corresponding path program 1 times [2020-09-25 09:06:25,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:25,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029225938] [2020-09-25 09:06:25,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:25,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:25,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:25,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:25,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking...