/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=SMALLEST --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/Problem01_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:20:52,267 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:20:52,271 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:20:52,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:20:52,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:20:52,334 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:20:52,336 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:20:52,340 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:20:52,343 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:20:52,347 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:20:52,349 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:20:52,350 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:20:52,350 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:20:52,354 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:20:52,357 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:20:52,359 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:20:52,361 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:20:52,362 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:20:52,364 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:20:52,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:20:52,377 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:20:52,378 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:20:52,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:20:52,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:20:52,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:20:52,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:20:52,384 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:20:52,387 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:20:52,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:20:52,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:20:52,391 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:20:52,392 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:20:52,393 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:20:52,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:20:52,395 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:20:52,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:20:52,396 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:20:52,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:20:52,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:20:52,398 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:20:52,400 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:20:52,401 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 [2020-09-24 18:20:52,454 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:20:52,454 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:20:52,457 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:20:52,457 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:20:52,458 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:20:52,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:20:52,458 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:20:52,459 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:20:52,459 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:20:52,459 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:20:52,460 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:20:52,460 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:20:52,461 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:20:52,461 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:20:52,461 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:20:52,462 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:20:52,462 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:20:52,462 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:20:52,462 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:20:52,462 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:20:52,463 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:20:52,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:20:52,463 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:20:52,463 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:20:52,463 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:20:52,464 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:20:52,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:20:52,464 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:20:52,464 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:20:52,464 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:20:52,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:20:52,990 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:20:52,995 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:20:52,998 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:20:52,999 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:20:53,000 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label58.c [2020-09-24 18:20:53,097 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63a294ef2/1dc951593b0746e59d42047ca9cb9056/FLAGf3980a006 [2020-09-24 18:20:53,738 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:20:53,739 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label58.c [2020-09-24 18:20:53,753 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63a294ef2/1dc951593b0746e59d42047ca9cb9056/FLAGf3980a006 [2020-09-24 18:20:54,002 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63a294ef2/1dc951593b0746e59d42047ca9cb9056 [2020-09-24 18:20:54,015 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:20:54,021 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:20:54,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:20:54,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:20:54,027 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:20:54,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:20:54" (1/1) ... [2020-09-24 18:20:54,032 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36345b5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:54, skipping insertion in model container [2020-09-24 18:20:54,032 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:20:54" (1/1) ... [2020-09-24 18:20:54,041 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:20:54,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:20:54,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:20:54,603 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:20:54,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:20:54,899 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:20:54,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:54 WrapperNode [2020-09-24 18:20:54,899 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:20:54,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:20:54,901 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:20:54,901 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:20:54,921 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:54" (1/1) ... [2020-09-24 18:20:54,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:54" (1/1) ... [2020-09-24 18:20:54,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:54" (1/1) ... [2020-09-24 18:20:54,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:54" (1/1) ... [2020-09-24 18:20:54,991 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:54" (1/1) ... [2020-09-24 18:20:55,008 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:54" (1/1) ... [2020-09-24 18:20:55,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:54" (1/1) ... [2020-09-24 18:20:55,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:20:55,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:20:55,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:20:55,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:20:55,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:54" (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 [2020-09-24 18:20:55,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:20:55,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:20:55,106 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:20:55,106 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:20:55,106 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:20:55,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:20:55,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:20:55,106 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:20:55,107 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:20:55,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:20:55,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:20:56,447 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:20:56,447 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:20:56,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:20:56 BoogieIcfgContainer [2020-09-24 18:20:56,468 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:20:56,470 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:20:56,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:20:56,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:20:56,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:20:54" (1/3) ... [2020-09-24 18:20:56,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@264ef44f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:20:56, skipping insertion in model container [2020-09-24 18:20:56,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:54" (2/3) ... [2020-09-24 18:20:56,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@264ef44f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:20:56, skipping insertion in model container [2020-09-24 18:20:56,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:20:56" (3/3) ... [2020-09-24 18:20:56,480 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label58.c [2020-09-24 18:20:56,493 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:20:56,510 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:20:56,534 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:20:56,586 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:20:56,587 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:20:56,587 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:20:56,587 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:20:56,587 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:20:56,587 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:20:56,588 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:20:56,588 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:20:56,636 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 18:20:56,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-24 18:20:56,680 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:56,684 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:20:56,685 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:56,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:56,693 INFO L82 PathProgramCache]: Analyzing trace with hash 2032478133, now seen corresponding path program 1 times [2020-09-24 18:20:56,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:56,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342727807] [2020-09-24 18:20:56,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:57,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:57,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:57,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:57,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:58,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:59,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:59,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:00,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:02,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:02,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-24 18:21:02,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:21:02,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 18:21:02,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:02,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:21:02,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 18:21:02,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-24 18:21:02,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:21:02,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:02,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:02,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:02,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:02,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:21:02,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:02,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 18:21:02,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:02,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:02,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:02,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 18:21:02,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:21:02,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:21:02,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342727807] [2020-09-24 18:21:02,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:21:02,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:21:02,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194030344] [2020-09-24 18:21:02,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:21:02,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:02,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:21:02,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:21:02,539 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-24 18:21:05,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:05,006 INFO L93 Difference]: Finished difference Result 1270 states and 1669 transitions. [2020-09-24 18:21:05,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:21:05,008 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-09-24 18:21:05,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:05,047 INFO L225 Difference]: With dead ends: 1270 [2020-09-24 18:21:05,048 INFO L226 Difference]: Without dead ends: 696 [2020-09-24 18:21:05,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:21:05,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-24 18:21:05,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 603. [2020-09-24 18:21:05,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-24 18:21:05,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 731 transitions. [2020-09-24 18:21:05,171 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 731 transitions. Word has length 127 [2020-09-24 18:21:05,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:05,172 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 731 transitions. [2020-09-24 18:21:05,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:21:05,172 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 731 transitions. [2020-09-24 18:21:05,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-24 18:21:05,178 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:05,179 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:21:05,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:21:05,179 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:05,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:05,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1441250023, now seen corresponding path program 1 times [2020-09-24 18:21:05,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:05,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421057510] [2020-09-24 18:21:05,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:05,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:05,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:05,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:05,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:05,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:07,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:08,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:09,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:10,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:10,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-24 18:21:10,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:21:10,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-24 18:21:10,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:10,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:21:10,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:21:10,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:21:10,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:10,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:10,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:10,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:10,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:10,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:21:10,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:10,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 18:21:10,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:10,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:10,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:10,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:21:10,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:21:10,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:21:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:10,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:10,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:10,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:21:10,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:10,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-24 18:21:10,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:10,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:10,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:21:10,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 18:21:10,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:10,544 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:21:10,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421057510] [2020-09-24 18:21:10,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:21:10,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 18:21:10,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900702053] [2020-09-24 18:21:10,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:21:10,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:10,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:21:10,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:21:10,559 INFO L87 Difference]: Start difference. First operand 603 states and 731 transitions. Second operand 8 states. [2020-09-24 18:21:13,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:13,694 INFO L93 Difference]: Finished difference Result 1938 states and 2501 transitions. [2020-09-24 18:21:13,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 18:21:13,695 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 149 [2020-09-24 18:21:13,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:13,711 INFO L225 Difference]: With dead ends: 1938 [2020-09-24 18:21:13,711 INFO L226 Difference]: Without dead ends: 1359 [2020-09-24 18:21:13,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-24 18:21:13,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1359 states. [2020-09-24 18:21:13,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1359 to 1240. [2020-09-24 18:21:13,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1240 states. [2020-09-24 18:21:13,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1570 transitions. [2020-09-24 18:21:13,798 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1570 transitions. Word has length 149 [2020-09-24 18:21:13,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:13,799 INFO L479 AbstractCegarLoop]: Abstraction has 1240 states and 1570 transitions. [2020-09-24 18:21:13,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:21:13,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1570 transitions. [2020-09-24 18:21:13,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-24 18:21:13,807 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:13,807 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:21:13,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:21:13,808 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:13,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:13,808 INFO L82 PathProgramCache]: Analyzing trace with hash -572807862, now seen corresponding path program 1 times [2020-09-24 18:21:13,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:13,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229889382] [2020-09-24 18:21:13,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:13,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:13,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:13,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:14,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:14,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:14,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:17,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:17,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:18,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:18,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:18,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:18,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-24 18:21:18,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:21:18,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-24 18:21:18,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:18,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:18,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-24 18:21:18,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-24 18:21:18,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:18,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:18,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:18,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:19,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:19,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:21:19,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:19,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:21:19,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:19,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:19,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:19,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:19,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:19,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:21:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:19,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:19,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:19,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:19,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:19,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 18:21:19,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:19,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:19,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:19,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 18:21:19,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:19,121 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:21:19,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229889382] [2020-09-24 18:21:19,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:19,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:21:19,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893659542] [2020-09-24 18:21:19,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:21:19,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:19,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:21:19,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:21:19,125 INFO L87 Difference]: Start difference. First operand 1240 states and 1570 transitions. Second operand 5 states. [2020-09-24 18:21:20,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:20,993 INFO L93 Difference]: Finished difference Result 3245 states and 4237 transitions. [2020-09-24 18:21:20,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:21:20,994 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-24 18:21:20,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:21,015 INFO L225 Difference]: With dead ends: 3245 [2020-09-24 18:21:21,015 INFO L226 Difference]: Without dead ends: 2029 [2020-09-24 18:21:21,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:21:21,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2029 states. [2020-09-24 18:21:21,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2029 to 1534. [2020-09-24 18:21:21,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1534 states. [2020-09-24 18:21:21,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1534 states to 1534 states and 1912 transitions. [2020-09-24 18:21:21,108 INFO L78 Accepts]: Start accepts. Automaton has 1534 states and 1912 transitions. Word has length 156 [2020-09-24 18:21:21,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:21,114 INFO L479 AbstractCegarLoop]: Abstraction has 1534 states and 1912 transitions. [2020-09-24 18:21:21,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:21:21,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1534 states and 1912 transitions. [2020-09-24 18:21:21,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-24 18:21:21,125 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:21,125 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:21:21,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:21:21,126 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:21,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:21,127 INFO L82 PathProgramCache]: Analyzing trace with hash -531650440, now seen corresponding path program 1 times [2020-09-24 18:21:21,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:21,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135775019] [2020-09-24 18:21:21,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:21,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:21,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:21,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:22,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:23,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:24,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:25,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:26,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:26,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-24 18:21:26,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:21:26,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 18:21:26,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:26,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:26,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 18:21:26,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 18:21:26,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:26,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:26,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:26,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:26,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:26,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:21:26,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:26,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:21:26,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:26,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:26,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:26,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:26,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:21:26,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:21:26,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:26,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:26,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:26,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:21:26,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:26,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 18:21:26,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:26,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:26,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:26,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:21:26,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:26,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 18:21:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:26,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:26,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:26,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:21:26,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:26,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 18:21:26,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:26,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:26,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:21:26,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 18:21:26,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:26,452 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:21:26,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135775019] [2020-09-24 18:21:26,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:26,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:21:26,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768594550] [2020-09-24 18:21:26,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:21:26,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:26,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:21:26,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:21:26,458 INFO L87 Difference]: Start difference. First operand 1534 states and 1912 transitions. Second operand 7 states. [2020-09-24 18:21:28,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:28,735 INFO L93 Difference]: Finished difference Result 3464 states and 4439 transitions. [2020-09-24 18:21:28,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:21:28,737 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 170 [2020-09-24 18:21:28,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:28,750 INFO L225 Difference]: With dead ends: 3464 [2020-09-24 18:21:28,750 INFO L226 Difference]: Without dead ends: 1954 [2020-09-24 18:21:28,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:21:28,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2020-09-24 18:21:28,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1716. [2020-09-24 18:21:28,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1716 states. [2020-09-24 18:21:28,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 2149 transitions. [2020-09-24 18:21:28,825 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 2149 transitions. Word has length 170 [2020-09-24 18:21:28,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:28,825 INFO L479 AbstractCegarLoop]: Abstraction has 1716 states and 2149 transitions. [2020-09-24 18:21:28,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:21:28,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 2149 transitions. [2020-09-24 18:21:28,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-24 18:21:28,834 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:28,834 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:21:28,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:21:28,834 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:28,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:28,835 INFO L82 PathProgramCache]: Analyzing trace with hash 2069482775, now seen corresponding path program 1 times [2020-09-24 18:21:28,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:28,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672152818] [2020-09-24 18:21:28,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:28,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:28,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:28,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:29,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:29,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:29,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:29,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:29,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:29,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:29,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:30,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:31,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:32,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:32,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:33,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:33,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:33,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:33,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-24 18:21:33,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-24 18:21:33,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 18:21:33,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:33,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:21:33,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-24 18:21:33,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 18:21:33,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:33,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:33,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:33,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:33,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:33,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:21:33,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:33,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:21:33,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:33,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:33,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:33,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:33,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:33,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:21:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:34,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:34,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:34,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 18:21:34,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:34,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 18:21:34,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:34,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:21:34,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:34,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 18:21:34,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:34,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 18:21:34,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:34,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:34,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:34,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:21:34,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:34,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 18:21:34,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:34,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:34,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:21:34,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 18:21:34,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:34,186 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:21:34,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672152818] [2020-09-24 18:21:34,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:34,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 18:21:34,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676912967] [2020-09-24 18:21:34,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:21:34,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:34,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:21:34,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:21:34,189 INFO L87 Difference]: Start difference. First operand 1716 states and 2149 transitions. Second operand 8 states. [2020-09-24 18:21:36,524 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-09-24 18:21:37,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:37,708 INFO L93 Difference]: Finished difference Result 5165 states and 6689 transitions. [2020-09-24 18:21:37,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 18:21:37,709 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 177 [2020-09-24 18:21:37,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:37,729 INFO L225 Difference]: With dead ends: 5165 [2020-09-24 18:21:37,730 INFO L226 Difference]: Without dead ends: 3473 [2020-09-24 18:21:37,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-24 18:21:37,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3473 states. [2020-09-24 18:21:37,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3473 to 3196. [2020-09-24 18:21:37,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3196 states. [2020-09-24 18:21:37,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3196 states to 3196 states and 3927 transitions. [2020-09-24 18:21:37,846 INFO L78 Accepts]: Start accepts. Automaton has 3196 states and 3927 transitions. Word has length 177 [2020-09-24 18:21:37,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:37,847 INFO L479 AbstractCegarLoop]: Abstraction has 3196 states and 3927 transitions. [2020-09-24 18:21:37,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:21:37,847 INFO L276 IsEmpty]: Start isEmpty. Operand 3196 states and 3927 transitions. [2020-09-24 18:21:37,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-24 18:21:37,864 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:37,865 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:21:37,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:21:37,865 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:37,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:37,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1573576556, now seen corresponding path program 1 times [2020-09-24 18:21:37,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:37,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13791154] [2020-09-24 18:21:37,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:37,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:37,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:38,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:38,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:38,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:38,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:38,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:38,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking...