/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:25:12,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:25:12,855 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:25:12,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:25:12,904 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:25:12,912 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:25:12,915 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:25:12,919 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:25:12,921 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:25:12,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:25:12,926 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:25:12,927 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:25:12,927 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:25:12,930 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:25:12,933 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:25:12,935 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:25:12,937 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:25:12,938 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:25:12,940 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:25:12,948 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:25:12,951 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:25:12,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:25:12,954 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:25:12,955 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:25:12,967 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:25:12,968 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:25:12,968 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:25:12,974 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:25:12,975 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:25:12,979 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:25:12,979 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:25:12,980 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:25:12,984 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:25:12,985 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:25:12,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:25:12,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:25:12,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:25:12,988 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:25:12,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:25:12,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:25:12,990 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:25:12,992 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 18:25:13,035 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:25:13,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:25:13,037 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:25:13,037 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:25:13,038 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:25:13,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:25:13,038 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:25:13,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:25:13,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:25:13,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:25:13,040 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:25:13,040 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:25:13,040 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:25:13,041 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:25:13,041 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:25:13,041 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:25:13,041 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:25:13,041 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:25:13,042 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:25:13,042 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:25:13,042 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:25:13,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:25:13,042 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:25:13,043 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:25:13,043 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:25:13,043 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:25:13,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:25:13,044 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:25:13,044 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:25:13,044 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 18:25:13,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:25:13,575 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:25:13,580 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:25:13,582 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:25:13,582 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:25:13,584 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label37.c [2020-09-24 18:25:13,666 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/690bfe0bc/1e8b3f73636d4bf1bc14dadd798dbc8f/FLAGebf867f1c [2020-09-24 18:25:14,333 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:25:14,334 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label37.c [2020-09-24 18:25:14,348 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/690bfe0bc/1e8b3f73636d4bf1bc14dadd798dbc8f/FLAGebf867f1c [2020-09-24 18:25:14,587 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/690bfe0bc/1e8b3f73636d4bf1bc14dadd798dbc8f [2020-09-24 18:25:14,603 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:25:14,612 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:25:14,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:25:14,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:25:14,620 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:25:14,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:25:14" (1/1) ... [2020-09-24 18:25:14,626 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4839a71c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:14, skipping insertion in model container [2020-09-24 18:25:14,626 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:25:14" (1/1) ... [2020-09-24 18:25:14,637 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:25:14,711 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:25:15,222 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:25:15,233 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:25:15,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:25:15,496 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:25:15,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:15 WrapperNode [2020-09-24 18:25:15,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:25:15,498 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:25:15,498 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:25:15,498 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:25:15,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:15" (1/1) ... [2020-09-24 18:25:15,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:15" (1/1) ... [2020-09-24 18:25:15,536 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:15" (1/1) ... [2020-09-24 18:25:15,537 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:15" (1/1) ... [2020-09-24 18:25:15,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:15" (1/1) ... [2020-09-24 18:25:15,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:15" (1/1) ... [2020-09-24 18:25:15,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:15" (1/1) ... [2020-09-24 18:25:15,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:25:15,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:25:15,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:25:15,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:25:15,614 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:25:15,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:25:15,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:25:15,688 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:25:15,688 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:25:15,688 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:25:15,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:25:15,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:25:15,689 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:25:15,689 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:25:15,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:25:15,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:25:17,269 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:25:17,269 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:25:17,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:25:17 BoogieIcfgContainer [2020-09-24 18:25:17,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:25:17,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:25:17,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:25:17,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:25:17,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:25:14" (1/3) ... [2020-09-24 18:25:17,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14d92ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:25:17, skipping insertion in model container [2020-09-24 18:25:17,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:25:15" (2/3) ... [2020-09-24 18:25:17,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14d92ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:25:17, skipping insertion in model container [2020-09-24 18:25:17,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:25:17" (3/3) ... [2020-09-24 18:25:17,294 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label37.c [2020-09-24 18:25:17,307 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:25:17,326 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:25:17,351 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:25:17,396 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:25:17,396 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:25:17,396 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:25:17,396 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:25:17,397 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:25:17,397 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:25:17,397 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:25:17,397 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:25:17,427 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 18:25:17,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-24 18:25:17,440 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:17,442 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] [2020-09-24 18:25:17,442 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:17,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:17,450 INFO L82 PathProgramCache]: Analyzing trace with hash 813911311, now seen corresponding path program 1 times [2020-09-24 18:25:17,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:17,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622445182] [2020-09-24 18:25:17,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:17,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:17,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:18,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:18,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:19,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:19,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 18:25:19,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:25:19,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1412 [2020-09-24 18:25:19,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:19,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:25:19,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 18:25:19,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 18:25:19,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 18:25:19,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:19,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:19,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:19,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:19,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:19,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:19,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 18:25:19,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:19,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:19,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:19,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:25:19,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:19,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:25:19,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622445182] [2020-09-24 18:25:19,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:25:19,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:25:19,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144903350] [2020-09-24 18:25:19,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:25:19,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:19,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:25:19,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:25:19,342 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 18:25:21,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:21,591 INFO L93 Difference]: Finished difference Result 1089 states and 1514 transitions. [2020-09-24 18:25:21,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:25:21,594 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-09-24 18:25:21,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:21,617 INFO L225 Difference]: With dead ends: 1089 [2020-09-24 18:25:21,617 INFO L226 Difference]: Without dead ends: 575 [2020-09-24 18:25:21,628 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 [2020-09-24 18:25:21,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-09-24 18:25:21,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2020-09-24 18:25:21,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-24 18:25:21,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 642 transitions. [2020-09-24 18:25:21,730 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 642 transitions. Word has length 73 [2020-09-24 18:25:21,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:25:21,731 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 642 transitions. [2020-09-24 18:25:21,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:25:21,732 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 642 transitions. [2020-09-24 18:25:21,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-24 18:25:21,741 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:21,741 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:25:21,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:25:21,742 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:21,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:21,743 INFO L82 PathProgramCache]: Analyzing trace with hash 975789152, now seen corresponding path program 1 times [2020-09-24 18:25:21,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:21,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250806684] [2020-09-24 18:25:21,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:21,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:21,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:21,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:22,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:22,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:22,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:22,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:23,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:26,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:26,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-24 18:25:26,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:25:26,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 18:25:26,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:26,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:26,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-24 18:25:26,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 18:25:26,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:25:26,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:26,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:26,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:26,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:26,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:26,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:26,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:25:26,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:26,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:26,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:26,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:26,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:26,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:25:26,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:26,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:27,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:27,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 18:25:27,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:27,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-24 18:25:27,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:27,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:27,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:27,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-24 18:25:27,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:27,171 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:25:27,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250806684] [2020-09-24 18:25:27,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:25:27,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:25:27,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311793847] [2020-09-24 18:25:27,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:25:27,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:27,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:25:27,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:25:27,176 INFO L87 Difference]: Start difference. First operand 545 states and 642 transitions. Second operand 5 states. [2020-09-24 18:25:28,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:28,866 INFO L93 Difference]: Finished difference Result 1389 states and 1702 transitions. [2020-09-24 18:25:28,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:25:28,867 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-09-24 18:25:28,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:28,880 INFO L225 Difference]: With dead ends: 1389 [2020-09-24 18:25:28,880 INFO L226 Difference]: Without dead ends: 859 [2020-09-24 18:25:28,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:25:28,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-09-24 18:25:28,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 849. [2020-09-24 18:25:28,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 849 states. [2020-09-24 18:25:28,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1017 transitions. [2020-09-24 18:25:28,951 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1017 transitions. Word has length 152 [2020-09-24 18:25:28,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:25:28,952 INFO L479 AbstractCegarLoop]: Abstraction has 849 states and 1017 transitions. [2020-09-24 18:25:28,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:25:28,952 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1017 transitions. [2020-09-24 18:25:28,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-24 18:25:28,959 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:28,960 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:25:28,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:25:28,960 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:28,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:28,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1429790590, now seen corresponding path program 1 times [2020-09-24 18:25:28,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:28,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535943537] [2020-09-24 18:25:28,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:29,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:29,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:29,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:29,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:29,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:30,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:30,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:31,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:31,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:34,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:34,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 18:25:34,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:25:34,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:25:34,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:34,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:34,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-24 18:25:34,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-24 18:25:34,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:34,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:34,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:34,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:34,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:34,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:34,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 18:25:34,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:34,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:34,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:34,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:34,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:34,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:25:34,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:34,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:34,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:34,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 18:25:34,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:34,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-24 18:25:34,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:34,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:34,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:34,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 18:25:34,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:34,340 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:25:34,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535943537] [2020-09-24 18:25:34,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:25:34,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:25:34,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379757545] [2020-09-24 18:25:34,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:25:34,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:34,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:25:34,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:25:34,344 INFO L87 Difference]: Start difference. First operand 849 states and 1017 transitions. Second operand 5 states. [2020-09-24 18:25:36,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:36,127 INFO L93 Difference]: Finished difference Result 1165 states and 1448 transitions. [2020-09-24 18:25:36,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:25:36,129 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-09-24 18:25:36,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:36,136 INFO L225 Difference]: With dead ends: 1165 [2020-09-24 18:25:36,136 INFO L226 Difference]: Without dead ends: 1163 [2020-09-24 18:25:36,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:25:36,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2020-09-24 18:25:36,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1003. [2020-09-24 18:25:36,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-09-24 18:25:36,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1256 transitions. [2020-09-24 18:25:36,172 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1256 transitions. Word has length 162 [2020-09-24 18:25:36,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:25:36,173 INFO L479 AbstractCegarLoop]: Abstraction has 1003 states and 1256 transitions. [2020-09-24 18:25:36,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:25:36,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1256 transitions. [2020-09-24 18:25:36,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-09-24 18:25:36,179 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:36,179 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 18:25:36,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:25:36,180 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:36,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:36,181 INFO L82 PathProgramCache]: Analyzing trace with hash 383410675, now seen corresponding path program 1 times [2020-09-24 18:25:36,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:36,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608178948] [2020-09-24 18:25:36,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:36,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:36,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:36,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:37,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:37,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:40,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:41,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:41,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-09-24 18:25:41,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:25:41,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-24 18:25:41,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:41,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:41,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-24 18:25:41,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-24 18:25:41,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:41,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:41,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:41,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:41,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:41,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:41,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:41,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:25:41,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:41,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:41,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:41,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:41,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:41,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:25:41,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:41,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:41,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:41,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 18:25:41,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:41,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-24 18:25:41,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:41,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:41,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:41,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 18:25:41,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:41,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 18:25:41,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:41,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:41,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:41,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 18:25:41,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:41,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-24 18:25:41,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:41,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:41,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:25:41,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 18:25:41,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:41,754 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:25:41,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [608178948] [2020-09-24 18:25:41,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:25:41,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:25:41,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355826950] [2020-09-24 18:25:41,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:25:41,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:41,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:25:41,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:25:41,759 INFO L87 Difference]: Start difference. First operand 1003 states and 1256 transitions. Second operand 7 states. [2020-09-24 18:25:44,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:44,180 INFO L93 Difference]: Finished difference Result 2501 states and 3282 transitions. [2020-09-24 18:25:44,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:25:44,181 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 244 [2020-09-24 18:25:44,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:44,193 INFO L225 Difference]: With dead ends: 2501 [2020-09-24 18:25:44,193 INFO L226 Difference]: Without dead ends: 1513 [2020-09-24 18:25:44,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:25:44,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states. [2020-09-24 18:25:44,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 1175. [2020-09-24 18:25:44,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1175 states. [2020-09-24 18:25:44,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1460 transitions. [2020-09-24 18:25:44,266 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1460 transitions. Word has length 244 [2020-09-24 18:25:44,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:25:44,267 INFO L479 AbstractCegarLoop]: Abstraction has 1175 states and 1460 transitions. [2020-09-24 18:25:44,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:25:44,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1460 transitions. [2020-09-24 18:25:44,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-09-24 18:25:44,277 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:44,278 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2020-09-24 18:25:44,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:25:44,278 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:44,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:44,279 INFO L82 PathProgramCache]: Analyzing trace with hash 454791686, now seen corresponding path program 1 times [2020-09-24 18:25:44,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:44,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416894103] [2020-09-24 18:25:44,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:44,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:44,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:44,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:44,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:45,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:45,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:46,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:49,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:49,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-09-24 18:25:49,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:25:49,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-09-24 18:25:49,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:49,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:49,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-09-24 18:25:49,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-24 18:25:49,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:25:49,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:49,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:49,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:49,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:49,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:49,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:49,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:25:49,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:49,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:49,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:49,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:49,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:49,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:25:49,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:49,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:49,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:49,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 18:25:49,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:49,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-24 18:25:49,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:49,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:49,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:49,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 18:25:49,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:49,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-24 18:25:49,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:49,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:49,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:49,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 18:25:49,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:49,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-24 18:25:49,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:49,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:49,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:25:49,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 18:25:49,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:50,012 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:25:50,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416894103] [2020-09-24 18:25:50,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:25:50,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:25:50,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064420181] [2020-09-24 18:25:50,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:25:50,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:50,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:25:50,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:25:50,015 INFO L87 Difference]: Start difference. First operand 1175 states and 1460 transitions. Second operand 7 states. [2020-09-24 18:25:52,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:25:52,965 INFO L93 Difference]: Finished difference Result 3061 states and 3876 transitions. [2020-09-24 18:25:52,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 18:25:52,965 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 251 [2020-09-24 18:25:52,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:25:52,978 INFO L225 Difference]: With dead ends: 3061 [2020-09-24 18:25:52,978 INFO L226 Difference]: Without dead ends: 1901 [2020-09-24 18:25:52,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:25:52,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1901 states. [2020-09-24 18:25:53,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1901 to 1840. [2020-09-24 18:25:53,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1840 states. [2020-09-24 18:25:53,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1840 states to 1840 states and 2314 transitions. [2020-09-24 18:25:53,063 INFO L78 Accepts]: Start accepts. Automaton has 1840 states and 2314 transitions. Word has length 251 [2020-09-24 18:25:53,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:25:53,064 INFO L479 AbstractCegarLoop]: Abstraction has 1840 states and 2314 transitions. [2020-09-24 18:25:53,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:25:53,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1840 states and 2314 transitions. [2020-09-24 18:25:53,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-09-24 18:25:53,071 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:25:53,072 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2020-09-24 18:25:53,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:25:53,072 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:25:53,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:25:53,073 INFO L82 PathProgramCache]: Analyzing trace with hash -175345899, now seen corresponding path program 1 times [2020-09-24 18:25:53,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:25:53,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055770185] [2020-09-24 18:25:53,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:25:53,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:53,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:53,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:53,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:53,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:54,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:55,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:55,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:56,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:57,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:57,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:58,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:58,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-09-24 18:25:58,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 18:25:58,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-24 18:25:58,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:58,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:58,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-24 18:25:58,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-24 18:25:58,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:58,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:25:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:58,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:58,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:58,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:25:58,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:58,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:25:58,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:58,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:25:58,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:58,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:25:58,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:58,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 18:25:58,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:58,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:58,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:58,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 18:25:58,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:58,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-24 18:25:58,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:58,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:25:58,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:25:58,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 18:25:58,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:25:58,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-24 18:25:58,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:25:58,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:25:58,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:25:58,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 18:25:58,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:25:58,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-09-24 18:25:58,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:25:58,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:25:58,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:25:58,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 18:25:58,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:25:58,685 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:25:58,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055770185] [2020-09-24 18:25:58,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:25:58,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:25:58,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282197736] [2020-09-24 18:25:58,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:25:58,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:25:58,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:25:58,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:25:58,689 INFO L87 Difference]: Start difference. First operand 1840 states and 2314 transitions. Second operand 7 states.