/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --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_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:12:48,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:12:48,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:12:48,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:12:48,343 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:12:48,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:12:48,355 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:12:48,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:12:48,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:12:48,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:12:48,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:12:48,369 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:12:48,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:12:48,373 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:12:48,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:12:48,378 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:12:48,379 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:12:48,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:12:48,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:12:48,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:12:48,393 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:12:48,394 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:12:48,395 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:12:48,396 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:12:48,408 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:12:48,408 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:12:48,408 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:12:48,416 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:12:48,416 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:12:48,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:12:48,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:12:48,422 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:12:48,422 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:12:48,425 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:12:48,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:12:48,426 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:12:48,427 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:12:48,427 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:12:48,427 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:12:48,429 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:12:48,429 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:12:48,430 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 10:12:48,475 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:12:48,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:12:48,478 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:12:48,478 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:12:48,478 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:12:48,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:12:48,479 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:12:48,479 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:12:48,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:12:48,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:12:48,480 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:12:48,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:12:48,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:12:48,481 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:12:48,482 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:12:48,482 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:12:48,482 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:12:48,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:12:48,482 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:12:48,483 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:12:48,483 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:12:48,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:12:48,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:12:48,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:12:48,484 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:12:48,484 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:12:48,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:12:48,484 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:12:48,484 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:12:48,485 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:12:49,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:12:49,020 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:12:49,025 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:12:49,027 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:12:49,027 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:12:49,028 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label52.c [2020-09-25 10:12:49,110 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b70b7063/71f522c783924c2aadc188faca359eaf/FLAG0d3ed417b [2020-09-25 10:12:49,710 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:12:49,711 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label52.c [2020-09-25 10:12:49,727 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b70b7063/71f522c783924c2aadc188faca359eaf/FLAG0d3ed417b [2020-09-25 10:12:49,963 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b70b7063/71f522c783924c2aadc188faca359eaf [2020-09-25 10:12:49,975 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:12:49,980 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:12:49,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:12:49,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:12:49,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:12:49,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:12:49" (1/1) ... [2020-09-25 10:12:49,992 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad15a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:49, skipping insertion in model container [2020-09-25 10:12:49,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:12:49" (1/1) ... [2020-09-25 10:12:50,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:12:50,061 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:12:50,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:12:50,612 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:12:50,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:12:50,867 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:12:50,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:50 WrapperNode [2020-09-25 10:12:50,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:12:50,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:12:50,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:12:50,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:12:50,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:50" (1/1) ... [2020-09-25 10:12:50,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:50" (1/1) ... [2020-09-25 10:12:50,916 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:50" (1/1) ... [2020-09-25 10:12:50,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:50" (1/1) ... [2020-09-25 10:12:50,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:50" (1/1) ... [2020-09-25 10:12:50,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:50" (1/1) ... [2020-09-25 10:12:50,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:50" (1/1) ... [2020-09-25 10:12:50,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:12:50,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:12:50,994 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:12:50,994 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:12:50,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:50" (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 10:12:51,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:12:51,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:12:51,100 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:12:51,101 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:12:51,101 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:12:51,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:12:51,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:12:51,102 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:12:51,103 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:12:51,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:12:51,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:12:52,675 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:12:52,675 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:12:52,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:12:52 BoogieIcfgContainer [2020-09-25 10:12:52,685 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:12:52,688 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:12:52,688 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:12:52,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:12:52,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:12:49" (1/3) ... [2020-09-25 10:12:52,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9dacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:12:52, skipping insertion in model container [2020-09-25 10:12:52,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:12:50" (2/3) ... [2020-09-25 10:12:52,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9dacaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:12:52, skipping insertion in model container [2020-09-25 10:12:52,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:12:52" (3/3) ... [2020-09-25 10:12:52,698 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label52.c [2020-09-25 10:12:52,713 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:12:52,729 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:12:52,756 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:12:52,799 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:12:52,800 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:12:52,800 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:12:52,800 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:12:52,800 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:12:52,800 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:12:52,800 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:12:52,801 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:12:52,843 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 10:12:52,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 10:12:52,856 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:52,858 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] [2020-09-25 10:12:52,858 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:52,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:52,867 INFO L82 PathProgramCache]: Analyzing trace with hash 963589103, now seen corresponding path program 1 times [2020-09-25 10:12:52,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:52,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939204010] [2020-09-25 10:12:52,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:53,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:53,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:53,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:53,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:53,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 10:12:53,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:12:53,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 756 [2020-09-25 10:12:53,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:53,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:53,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:12:53,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 10:12:53,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 10:12:53,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:12:54,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:54,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:54,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:54,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:54,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:12:54,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:12:54,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 10:12:54,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:54,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:54,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:12:54,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:12:54,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:12:54,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:54,127 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 10:12:54,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939204010] [2020-09-25 10:12:54,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:12:54,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:12:54,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667728665] [2020-09-25 10:12:54,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:12:54,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:12:54,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:12:54,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:12:54,176 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 10:12:56,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:56,464 INFO L93 Difference]: Finished difference Result 1089 states and 1514 transitions. [2020-09-25 10:12:56,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:12:56,466 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-09-25 10:12:56,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:56,491 INFO L225 Difference]: With dead ends: 1089 [2020-09-25 10:12:56,491 INFO L226 Difference]: Without dead ends: 575 [2020-09-25 10:12:56,506 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 10:12:56,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-09-25 10:12:56,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2020-09-25 10:12:56,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-25 10:12:56,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 642 transitions. [2020-09-25 10:12:56,613 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 642 transitions. Word has length 60 [2020-09-25 10:12:56,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:56,615 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 642 transitions. [2020-09-25 10:12:56,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:12:56,615 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 642 transitions. [2020-09-25 10:12:56,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 10:12:56,623 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:56,624 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:12:56,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:12:56,624 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:56,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:56,625 INFO L82 PathProgramCache]: Analyzing trace with hash 2017301439, now seen corresponding path program 1 times [2020-09-25 10:12:56,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:56,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854178183] [2020-09-25 10:12:56,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:56,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:56,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:56,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:57,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:57,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:57,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:57,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:58,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:01,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:01,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 10:13:01,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:13:01,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4828 [2020-09-25 10:13:01,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:01,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:01,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:13:01,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 10:13:01,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 10:13:01,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:01,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:01,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:01,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:01,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:01,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:01,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:01,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 10:13:01,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:01,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:01,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:01,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:01,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:13:01,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:01,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:01,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:01,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:01,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:01,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:01,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 10:13:01,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:01,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-09-25 10:13:01,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:01,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:01,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:13:01,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:01,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 10:13:01,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:02,132 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:13:02,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854178183] [2020-09-25 10:13:02,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:02,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:13:02,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481479139] [2020-09-25 10:13:02,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:13:02,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:02,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:13:02,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:13:02,138 INFO L87 Difference]: Start difference. First operand 545 states and 642 transitions. Second operand 6 states. [2020-09-25 10:13:03,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:03,917 INFO L93 Difference]: Finished difference Result 1393 states and 1707 transitions. [2020-09-25 10:13:03,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:13:03,918 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2020-09-25 10:13:03,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:03,928 INFO L225 Difference]: With dead ends: 1393 [2020-09-25 10:13:03,928 INFO L226 Difference]: Without dead ends: 863 [2020-09-25 10:13:03,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:13:03,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2020-09-25 10:13:03,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 851. [2020-09-25 10:13:03,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 851 states. [2020-09-25 10:13:03,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1020 transitions. [2020-09-25 10:13:03,990 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1020 transitions. Word has length 139 [2020-09-25 10:13:03,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:03,992 INFO L479 AbstractCegarLoop]: Abstraction has 851 states and 1020 transitions. [2020-09-25 10:13:03,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:13:03,992 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1020 transitions. [2020-09-25 10:13:03,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 10:13:03,998 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:03,999 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:13:03,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:13:03,999 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:04,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:04,000 INFO L82 PathProgramCache]: Analyzing trace with hash -273743075, now seen corresponding path program 1 times [2020-09-25 10:13:04,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:04,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188523423] [2020-09-25 10:13:04,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:04,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:04,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:04,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:04,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:04,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:06,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:06,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:07,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:08,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:08,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-25 10:13:08,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:13:08,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4476 [2020-09-25 10:13:08,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:08,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:08,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:13:08,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:13:08,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-25 10:13:08,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 10:13:08,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:08,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:08,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:08,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:08,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:08,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 10:13:08,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:08,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:08,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:08,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:08,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:13:08,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:13:08,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:08,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:08,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:08,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:08,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:13:08,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:08,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-25 10:13:08,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:08,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:08,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:13:08,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:08,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 10:13:08,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:09,055 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:13:09,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188523423] [2020-09-25 10:13:09,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:09,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:13:09,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487193220] [2020-09-25 10:13:09,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:13:09,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:09,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:13:09,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:13:09,060 INFO L87 Difference]: Start difference. First operand 851 states and 1020 transitions. Second operand 8 states. [2020-09-25 10:13:12,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:12,692 INFO L93 Difference]: Finished difference Result 2938 states and 3705 transitions. [2020-09-25 10:13:12,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:13:12,695 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 149 [2020-09-25 10:13:12,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:12,711 INFO L225 Difference]: With dead ends: 2938 [2020-09-25 10:13:12,711 INFO L226 Difference]: Without dead ends: 2102 [2020-09-25 10:13:12,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:13:12,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2102 states. [2020-09-25 10:13:12,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2102 to 1987. [2020-09-25 10:13:12,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1987 states. [2020-09-25 10:13:12,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1987 states to 1987 states and 2452 transitions. [2020-09-25 10:13:12,821 INFO L78 Accepts]: Start accepts. Automaton has 1987 states and 2452 transitions. Word has length 149 [2020-09-25 10:13:12,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:12,823 INFO L479 AbstractCegarLoop]: Abstraction has 1987 states and 2452 transitions. [2020-09-25 10:13:12,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:13:12,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1987 states and 2452 transitions. [2020-09-25 10:13:12,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-25 10:13:12,842 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:12,842 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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 10:13:12,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:13:12,843 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:12,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:12,843 INFO L82 PathProgramCache]: Analyzing trace with hash -103369624, now seen corresponding path program 1 times [2020-09-25 10:13:12,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:12,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092759157] [2020-09-25 10:13:12,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:12,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:12,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:13,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:13,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:14,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:14,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:16,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:16,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:16,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:17,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:17,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-09-25 10:13:17,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:13:17,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4628 [2020-09-25 10:13:17,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:17,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:17,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:13:17,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:13:17,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-09-25 10:13:17,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:17,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:17,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:17,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:17,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:17,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:17,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 10:13:17,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:17,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:17,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:17,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:17,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:13:17,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:17,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:17,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:17,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:17,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:17,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 10:13:17,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:17,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-25 10:13:17,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:17,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:17,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:13:17,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:17,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 10:13:17,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:13:17,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 10:13:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:17,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:18,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:18,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:18,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 10:13:18,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:18,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-25 10:13:18,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:18,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:18,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:13:18,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:13:18,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 10:13:18,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:18,257 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 14 proven. 76 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-09-25 10:13:18,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092759157] [2020-09-25 10:13:18,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:18,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:13:18,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980063518] [2020-09-25 10:13:18,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:13:18,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:18,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:13:18,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:13:18,262 INFO L87 Difference]: Start difference. First operand 1987 states and 2452 transitions. Second operand 9 states. [2020-09-25 10:13:22,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:22,110 INFO L93 Difference]: Finished difference Result 5193 states and 6641 transitions. [2020-09-25 10:13:22,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 10:13:22,111 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 219 [2020-09-25 10:13:22,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:22,136 INFO L225 Difference]: With dead ends: 5193 [2020-09-25 10:13:22,136 INFO L226 Difference]: Without dead ends: 3221 [2020-09-25 10:13:22,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-09-25 10:13:22,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3221 states. [2020-09-25 10:13:22,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3221 to 3136. [2020-09-25 10:13:22,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3136 states. [2020-09-25 10:13:22,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3136 states to 3136 states and 3938 transitions. [2020-09-25 10:13:22,249 INFO L78 Accepts]: Start accepts. Automaton has 3136 states and 3938 transitions. Word has length 219 [2020-09-25 10:13:22,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:22,250 INFO L479 AbstractCegarLoop]: Abstraction has 3136 states and 3938 transitions. [2020-09-25 10:13:22,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:13:22,250 INFO L276 IsEmpty]: Start isEmpty. Operand 3136 states and 3938 transitions. [2020-09-25 10:13:22,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-09-25 10:13:22,256 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:22,256 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 10:13:22,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:13:22,257 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:22,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:22,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1270686682, now seen corresponding path program 1 times [2020-09-25 10:13:22,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:22,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938645715] [2020-09-25 10:13:22,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:22,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:22,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:22,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:22,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:22,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:24,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:24,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:24,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:26,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:26,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:27,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:27,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-09-25 10:13:27,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:13:27,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-09-25 10:13:27,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:27,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:27,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:13:27,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:13:27,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-09-25 10:13:27,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:13:27,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:13:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:27,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:27,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:27,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:13:27,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:13:27,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 10:13:27,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:27,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:27,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:13:27,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:27,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:13:27,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:13:27,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:13:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:27,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:27,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:27,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:27,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:13:27,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:27,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-25 10:13:27,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:27,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:27,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:13:27,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:27,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 10:13:27,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:27,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 10:13:27,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:27,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:28,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:28,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:13:28,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 10:13:28,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:13:28,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406 [2020-09-25 10:13:28,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:13:28,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:13:28,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:13:28,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:13:28,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 10:13:28,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:13:28,621 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-09-25 10:13:28,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938645715] [2020-09-25 10:13:28,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:13:28,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:13:28,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252696060] [2020-09-25 10:13:28,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:13:28,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:13:28,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:13:28,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:13:28,626 INFO L87 Difference]: Start difference. First operand 3136 states and 3938 transitions. Second operand 9 states. [2020-09-25 10:13:32,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:13:32,181 INFO L93 Difference]: Finished difference Result 7100 states and 9222 transitions. [2020-09-25 10:13:32,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 10:13:32,184 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 232 [2020-09-25 10:13:32,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:13:32,210 INFO L225 Difference]: With dead ends: 7100 [2020-09-25 10:13:32,211 INFO L226 Difference]: Without dead ends: 4091 [2020-09-25 10:13:32,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:13:32,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4091 states. [2020-09-25 10:13:32,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4091 to 3891. [2020-09-25 10:13:32,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3891 states. [2020-09-25 10:13:32,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3891 states to 3891 states and 4840 transitions. [2020-09-25 10:13:32,370 INFO L78 Accepts]: Start accepts. Automaton has 3891 states and 4840 transitions. Word has length 232 [2020-09-25 10:13:32,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:13:32,370 INFO L479 AbstractCegarLoop]: Abstraction has 3891 states and 4840 transitions. [2020-09-25 10:13:32,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:13:32,371 INFO L276 IsEmpty]: Start isEmpty. Operand 3891 states and 4840 transitions. [2020-09-25 10:13:32,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-09-25 10:13:32,377 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:13:32,377 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 10:13:32,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:13:32,378 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:13:32,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:13:32,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1911325122, now seen corresponding path program 1 times [2020-09-25 10:13:32,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:13:32,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688745322] [2020-09-25 10:13:32,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:13:32,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:13:32,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:32,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:34,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:34,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:13:34,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking...