/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/Problem02_label57.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:10:46,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:10:46,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:10:46,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:10:46,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:10:46,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:10:46,939 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:10:46,941 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:10:46,942 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:10:46,943 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:10:46,945 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:10:46,946 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:10:46,946 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:10:46,947 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:10:46,948 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:10:46,949 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:10:46,950 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:10:46,952 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:10:46,953 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:10:46,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:10:46,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:10:46,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:10:46,960 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:10:46,961 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:10:46,963 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:10:46,963 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:10:46,964 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:10:46,965 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:10:46,967 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:10:46,968 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:10:46,968 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:10:46,969 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:10:46,970 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:10:46,971 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:10:46,972 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:10:46,972 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:10:46,973 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:10:46,973 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:10:46,974 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:10:46,975 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:10:46,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:10:46,977 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 10:10:47,004 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:10:47,004 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:10:47,005 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:10:47,006 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:10:47,006 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:10:47,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:10:47,006 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:10:47,006 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:10:47,007 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:10:47,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:10:47,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:10:47,007 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:10:47,007 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:10:47,008 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:10:47,008 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:10:47,008 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:10:47,008 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:10:47,008 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:10:47,009 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:10:47,009 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:10:47,009 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:10:47,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:10:47,009 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:10:47,010 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:10:47,010 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:10:47,010 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:10:47,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:10:47,010 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:10:47,011 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:10:47,011 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 10:10:47,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:10:47,511 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:10:47,516 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:10:47,519 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:10:47,521 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:10:47,522 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label57.c [2020-09-25 10:10:47,605 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59e3785c3/86b2e75f83ec485b9235ca53161ce2e4/FLAG6e691f7ba [2020-09-25 10:10:48,247 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:10:48,248 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label57.c [2020-09-25 10:10:48,262 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59e3785c3/86b2e75f83ec485b9235ca53161ce2e4/FLAG6e691f7ba [2020-09-25 10:10:48,475 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59e3785c3/86b2e75f83ec485b9235ca53161ce2e4 [2020-09-25 10:10:48,492 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:10:48,498 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:10:48,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:10:48,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:10:48,505 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:10:48,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:10:48" (1/1) ... [2020-09-25 10:10:48,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d72532b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:48, skipping insertion in model container [2020-09-25 10:10:48,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:10:48" (1/1) ... [2020-09-25 10:10:48,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:10:48,588 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:10:49,029 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:10:49,038 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:10:49,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:10:49,300 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:10:49,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:49 WrapperNode [2020-09-25 10:10:49,301 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:10:49,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:10:49,302 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:10:49,302 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:10:49,321 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:49" (1/1) ... [2020-09-25 10:10:49,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:49" (1/1) ... [2020-09-25 10:10:49,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:49" (1/1) ... [2020-09-25 10:10:49,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:49" (1/1) ... [2020-09-25 10:10:49,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:49" (1/1) ... [2020-09-25 10:10:49,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:49" (1/1) ... [2020-09-25 10:10:49,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:49" (1/1) ... [2020-09-25 10:10:49,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:10:49,433 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:10:49,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:10:49,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:10:49,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:49" (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 10:10:49,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:10:49,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:10:49,547 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:10:49,547 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:10:49,547 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:10:49,547 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:10:49,547 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:10:49,548 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:10:49,548 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:10:49,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:10:49,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:10:51,105 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:10:51,106 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:10:51,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:10:51 BoogieIcfgContainer [2020-09-25 10:10:51,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:10:51,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:10:51,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:10:51,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:10:51,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:10:48" (1/3) ... [2020-09-25 10:10:51,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590b40ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:10:51, skipping insertion in model container [2020-09-25 10:10:51,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:49" (2/3) ... [2020-09-25 10:10:51,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590b40ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:10:51, skipping insertion in model container [2020-09-25 10:10:51,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:10:51" (3/3) ... [2020-09-25 10:10:51,125 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label57.c [2020-09-25 10:10:51,137 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:10:51,149 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:10:51,172 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:10:51,207 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:10:51,207 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:10:51,207 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:10:51,207 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:10:51,207 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:10:51,208 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:10:51,208 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:10:51,208 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:10:51,249 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 10:10:51,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-09-25 10:10:51,272 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:51,273 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] [2020-09-25 10:10:51,274 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:51,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:51,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1788019222, now seen corresponding path program 1 times [2020-09-25 10:10:51,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:51,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100677907] [2020-09-25 10:10:51,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:51,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:51,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:51,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:52,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:52,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:53,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:53,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:55,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:55,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:56,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:56,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:56,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:56,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 10:10:56,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 10:10:56,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 10:10:56,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:56,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:56,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:10:56,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 10:10:56,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 10:10:56,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 10:10:56,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:56,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:56,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:56,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:56,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:56,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:56,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 10:10:56,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:56,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:56,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:56,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:56,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:10:56,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:56,973 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 10:10:56,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100677907] [2020-09-25 10:10:56,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:10:56,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:10:56,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361202664] [2020-09-25 10:10:56,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:10:56,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:57,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:10:57,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:10:57,010 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 10:10:59,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:59,721 INFO L93 Difference]: Finished difference Result 1206 states and 1652 transitions. [2020-09-25 10:10:59,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:10:59,723 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2020-09-25 10:10:59,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:59,758 INFO L225 Difference]: With dead ends: 1206 [2020-09-25 10:10:59,758 INFO L226 Difference]: Without dead ends: 628 [2020-09-25 10:10:59,771 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 [2020-09-25 10:10:59,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-09-25 10:10:59,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 615. [2020-09-25 10:10:59,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-09-25 10:10:59,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 751 transitions. [2020-09-25 10:10:59,905 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 751 transitions. Word has length 117 [2020-09-25 10:10:59,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:59,906 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 751 transitions. [2020-09-25 10:10:59,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:10:59,907 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 751 transitions. [2020-09-25 10:10:59,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 10:10:59,914 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:59,915 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:10:59,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:10:59,915 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:59,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:59,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1102849521, now seen corresponding path program 1 times [2020-09-25 10:10:59,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:59,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823485436] [2020-09-25 10:10:59,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:59,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:59,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:00,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:00,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:00,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:00,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:01,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:01,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:04,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:04,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-25 10:11:04,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:11:04,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 10:11:04,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:04,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:04,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:11:04,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:11:04,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 10:11:04,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:05,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:05,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:05,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:05,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:05,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:11:05,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:05,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 10:11:05,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:05,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:05,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:05,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:05,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:11:05,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:05,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:11:05,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:05,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:05,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:05,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:05,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 10:11:05,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:05,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 10:11:05,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:05,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:05,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:11:05,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:05,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:11:05,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:05,640 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:11:05,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823485436] [2020-09-25 10:11:05,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:05,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:11:05,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227859882] [2020-09-25 10:11:05,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:11:05,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:05,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:11:05,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:11:05,646 INFO L87 Difference]: Start difference. First operand 615 states and 751 transitions. Second operand 11 states. [2020-09-25 10:11:08,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:08,962 INFO L93 Difference]: Finished difference Result 1925 states and 2547 transitions. [2020-09-25 10:11:08,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:11:08,963 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 151 [2020-09-25 10:11:08,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:08,970 INFO L225 Difference]: With dead ends: 1925 [2020-09-25 10:11:08,971 INFO L226 Difference]: Without dead ends: 560 [2020-09-25 10:11:08,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:11:08,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2020-09-25 10:11:08,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 547. [2020-09-25 10:11:08,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2020-09-25 10:11:09,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 662 transitions. [2020-09-25 10:11:09,002 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 662 transitions. Word has length 151 [2020-09-25 10:11:09,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:09,003 INFO L479 AbstractCegarLoop]: Abstraction has 547 states and 662 transitions. [2020-09-25 10:11:09,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:11:09,003 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 662 transitions. [2020-09-25 10:11:09,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-25 10:11:09,008 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:09,008 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:09,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:11:09,009 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:09,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:09,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1442537615, now seen corresponding path program 1 times [2020-09-25 10:11:09,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:09,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646044643] [2020-09-25 10:11:09,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:09,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:09,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:09,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:09,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:10,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:11,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:11,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:14,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:14,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 10:11:14,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:11:14,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 10:11:14,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:14,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:14,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 10:11:14,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:11:14,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 10:11:14,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:14,695 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2020-09-25 10:11:14,872 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 41 [2020-09-25 10:11:15,030 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 41 [2020-09-25 10:11:15,186 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 36 [2020-09-25 10:11:15,336 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 32 [2020-09-25 10:11:15,472 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 27 [2020-09-25 10:11:15,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:15,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:15,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:15,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:15,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:11:15,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:15,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 10:11:15,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:15,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:15,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:15,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:15,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:11:15,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:15,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:11:15,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:15,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:15,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:15,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:15,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 10:11:15,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:15,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-25 10:11:15,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:15,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:15,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:11:15,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:15,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 10:11:15,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:11:15,981 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:11:15,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646044643] [2020-09-25 10:11:15,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:15,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 10:11:15,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045388622] [2020-09-25 10:11:15,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 10:11:15,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:15,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 10:11:15,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:11:15,986 INFO L87 Difference]: Start difference. First operand 547 states and 662 transitions. Second operand 17 states. [2020-09-25 10:11:18,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:18,965 INFO L93 Difference]: Finished difference Result 1021 states and 1258 transitions. [2020-09-25 10:11:18,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 10:11:18,966 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 152 [2020-09-25 10:11:18,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:18,970 INFO L225 Difference]: With dead ends: 1021 [2020-09-25 10:11:18,970 INFO L226 Difference]: Without dead ends: 496 [2020-09-25 10:11:18,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=139, Invalid=367, Unknown=0, NotChecked=0, Total=506 [2020-09-25 10:11:18,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2020-09-25 10:11:18,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 486. [2020-09-25 10:11:18,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2020-09-25 10:11:18,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 544 transitions. [2020-09-25 10:11:18,989 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 544 transitions. Word has length 152 [2020-09-25 10:11:18,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:18,990 INFO L479 AbstractCegarLoop]: Abstraction has 486 states and 544 transitions. [2020-09-25 10:11:18,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 10:11:18,990 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 544 transitions. [2020-09-25 10:11:18,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-25 10:11:18,993 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:18,994 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:18,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:11:18,994 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:18,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:18,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1385410123, now seen corresponding path program 1 times [2020-09-25 10:11:18,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:18,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580794722] [2020-09-25 10:11:18,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:19,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:19,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:19,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:19,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:19,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:19,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:20,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:20,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:22,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:22,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:22,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:24,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:24,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-09-25 10:11:24,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 10:11:24,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 10:11:24,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:24,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:24,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:11:24,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 10:11:24,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-25 10:11:24,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:24,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:24,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:24,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:24,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:24,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:11:24,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:24,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 10:11:24,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:24,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:24,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:24,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:24,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 10:11:24,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:24,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:11:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:24,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:24,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:24,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:11:24,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:24,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 10:11:24,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:24,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:24,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:24,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:24,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 10:11:24,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:24,350 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:11:24,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580794722] [2020-09-25 10:11:24,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:24,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:11:24,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661944891] [2020-09-25 10:11:24,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:11:24,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:24,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:11:24,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:11:24,354 INFO L87 Difference]: Start difference. First operand 486 states and 544 transitions. Second operand 6 states. [2020-09-25 10:11:26,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:26,030 INFO L93 Difference]: Finished difference Result 1372 states and 1586 transitions. [2020-09-25 10:11:26,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:11:26,030 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 155 [2020-09-25 10:11:26,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:26,040 INFO L225 Difference]: With dead ends: 1372 [2020-09-25 10:11:26,041 INFO L226 Difference]: Without dead ends: 908 [2020-09-25 10:11:26,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:11:26,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2020-09-25 10:11:26,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 827. [2020-09-25 10:11:26,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 827 states. [2020-09-25 10:11:26,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 934 transitions. [2020-09-25 10:11:26,106 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 934 transitions. Word has length 155 [2020-09-25 10:11:26,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:26,106 INFO L479 AbstractCegarLoop]: Abstraction has 827 states and 934 transitions. [2020-09-25 10:11:26,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:11:26,107 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 934 transitions. [2020-09-25 10:11:26,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 10:11:26,111 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:26,111 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:26,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:11:26,112 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:26,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:26,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1304518793, now seen corresponding path program 1 times [2020-09-25 10:11:26,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:26,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1306682691] [2020-09-25 10:11:26,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:26,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:26,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:26,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:26,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:26,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:27,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:28,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:29,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:29,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:30,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:30,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:31,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:31,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 10:11:31,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 10:11:31,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 10:11:31,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:31,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:31,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:31,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 10:11:31,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 10:11:31,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:11:31,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:31,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:31,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:31,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:31,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:11:31,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:31,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:11:31,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:31,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:31,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:11:31,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:31,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:11:31,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:11:31,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:11:31,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:31,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:31,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:31,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:11:31,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:31,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:11:31,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:31,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:31,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:11:31,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:31,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:11:31,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:31,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 10:11:31,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:31,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:31,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:31,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:11:31,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:31,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 10:11:31,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:31,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:31,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:31,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:31,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 10:11:31,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:31,406 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 10:11:31,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1306682691] [2020-09-25 10:11:31,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:31,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 10:11:31,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486015707] [2020-09-25 10:11:31,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:11:31,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:31,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:11:31,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:11:31,409 INFO L87 Difference]: Start difference. First operand 827 states and 934 transitions. Second operand 5 states. [2020-09-25 10:11:32,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:32,774 INFO L93 Difference]: Finished difference Result 2250 states and 2595 transitions. [2020-09-25 10:11:32,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 10:11:32,779 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-09-25 10:11:32,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:32,786 INFO L225 Difference]: With dead ends: 2250 [2020-09-25 10:11:32,787 INFO L226 Difference]: Without dead ends: 1445 [2020-09-25 10:11:32,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:11:32,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2020-09-25 10:11:32,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1286. [2020-09-25 10:11:32,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1286 states. [2020-09-25 10:11:32,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 1419 transitions. [2020-09-25 10:11:32,837 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 1419 transitions. Word has length 173 [2020-09-25 10:11:32,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:32,838 INFO L479 AbstractCegarLoop]: Abstraction has 1286 states and 1419 transitions. [2020-09-25 10:11:32,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:11:32,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 1419 transitions. [2020-09-25 10:11:32,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-25 10:11:32,843 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:32,843 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:32,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:11:32,843 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:32,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:32,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1702439527, now seen corresponding path program 1 times [2020-09-25 10:11:32,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:32,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031980071] [2020-09-25 10:11:32,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:32,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:32,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:32,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:33,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:33,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:35,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking...