/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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:09:43,334 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:09:43,338 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:09:43,384 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:09:43,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:09:43,396 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:09:43,399 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:09:43,402 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:09:43,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:09:43,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:09:43,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:09:43,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:09:43,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:09:43,414 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:09:43,415 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:09:43,416 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:09:43,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:09:43,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:09:43,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:09:43,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:09:43,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:09:43,424 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:09:43,425 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:09:43,426 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:09:43,429 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:09:43,429 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:09:43,429 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:09:43,430 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:09:43,431 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:09:43,432 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:09:43,432 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:09:43,433 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:09:43,434 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:09:43,435 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:09:43,436 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:09:43,436 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:09:43,437 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:09:43,437 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:09:43,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:09:43,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:09:43,439 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:09:43,440 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 17:09:43,466 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:09:43,466 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:09:43,467 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:09:43,467 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:09:43,468 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:09:43,468 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:09:43,468 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:09:43,468 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:09:43,469 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:09:43,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:09:43,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:09:43,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:09:43,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:09:43,470 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:09:43,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:09:43,470 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:09:43,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:09:43,470 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:09:43,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:09:43,471 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:09:43,471 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:09:43,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:09:43,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:09:43,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:09:43,472 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:09:43,472 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:09:43,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:09:43,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:09:43,473 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:09:43,473 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;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;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;log-additional-information=true; [2020-09-24 17:09:43,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:09:43,952 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:09:43,956 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:09:43,958 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:09:43,959 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:09:43,961 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label13.c [2020-09-24 17:09:44,051 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3b6348fe/57a0e27c5ff1499a8c874fc67009392d/FLAG0bc495bad [2020-09-24 17:09:44,688 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:09:44,689 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label13.c [2020-09-24 17:09:44,704 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3b6348fe/57a0e27c5ff1499a8c874fc67009392d/FLAG0bc495bad [2020-09-24 17:09:44,918 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e3b6348fe/57a0e27c5ff1499a8c874fc67009392d [2020-09-24 17:09:44,930 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:09:44,936 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:09:44,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:09:44,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:09:44,944 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:09:44,945 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:09:44" (1/1) ... [2020-09-24 17:09:44,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f08f2df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:44, skipping insertion in model container [2020-09-24 17:09:44,950 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:09:44" (1/1) ... [2020-09-24 17:09:44,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:09:45,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:09:45,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:09:45,587 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:09:45,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:09:45,822 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:09:45,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:45 WrapperNode [2020-09-24 17:09:45,824 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:09:45,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:09:45,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:09:45,825 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:09:45,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:45" (1/1) ... [2020-09-24 17:09:45,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:45" (1/1) ... [2020-09-24 17:09:45,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:45" (1/1) ... [2020-09-24 17:09:45,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:45" (1/1) ... [2020-09-24 17:09:45,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:45" (1/1) ... [2020-09-24 17:09:45,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:45" (1/1) ... [2020-09-24 17:09:45,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:45" (1/1) ... [2020-09-24 17:09:45,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:09:45,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:09:45,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:09:45,939 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:09:45,941 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:45" (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 17:09:46,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:09:46,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:09:46,038 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 17:09:46,039 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:09:46,039 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 17:09:46,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:09:46,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 17:09:46,040 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 17:09:46,040 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:09:46,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:09:46,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:09:47,277 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:09:47,277 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 17:09:47,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:09:47 BoogieIcfgContainer [2020-09-24 17:09:47,286 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:09:47,287 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:09:47,287 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:09:47,291 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:09:47,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:09:44" (1/3) ... [2020-09-24 17:09:47,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d4dfc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:09:47, skipping insertion in model container [2020-09-24 17:09:47,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:45" (2/3) ... [2020-09-24 17:09:47,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d4dfc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:09:47, skipping insertion in model container [2020-09-24 17:09:47,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:09:47" (3/3) ... [2020-09-24 17:09:47,296 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label13.c [2020-09-24 17:09:47,307 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:09:47,318 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:09:47,340 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:09:47,374 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:09:47,374 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:09:47,374 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:09:47,374 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:09:47,375 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:09:47,375 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:09:47,375 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:09:47,375 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:09:47,406 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 17:09:47,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-24 17:09:47,429 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:09:47,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:09:47,431 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:09:47,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:09:47,439 INFO L82 PathProgramCache]: Analyzing trace with hash -946278635, now seen corresponding path program 1 times [2020-09-24 17:09:47,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:09:47,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340830662] [2020-09-24 17:09:47,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:09:47,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:47,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:48,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:48,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:49,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:49,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:49,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:52,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:53,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:53,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:00,642 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:10:00,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-24 17:10:00,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 17:10:00,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12922 [2020-09-24 17:10:00,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:10:00,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:10:00,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 17:10:00,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-09-24 17:10:00,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:10:00,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:10:00,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:10:00,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:00,932 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:10:00,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 17:10:00,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:10:00,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 17:10:00,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:10:00,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:10:00,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:10:00,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 17:10:00,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:10:00,991 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 17:10:00,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340830662] [2020-09-24 17:10:00,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:10:00,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 17:10:00,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454615332] [2020-09-24 17:10:01,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 17:10:01,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:10:01,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 17:10:01,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 17:10:01,025 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-24 17:10:03,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:10:03,149 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-24 17:10:03,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 17:10:03,156 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-09-24 17:10:03,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:10:03,197 INFO L225 Difference]: With dead ends: 1340 [2020-09-24 17:10:03,198 INFO L226 Difference]: Without dead ends: 741 [2020-09-24 17:10:03,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 17:10:03,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-24 17:10:03,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-24 17:10:03,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-24 17:10:03,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-24 17:10:03,314 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 151 [2020-09-24 17:10:03,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:10:03,316 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-24 17:10:03,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 17:10:03,317 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-24 17:10:03,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-24 17:10:03,327 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:10:03,328 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:10:03,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:10:03,328 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:10:03,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:10:03,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1054538660, now seen corresponding path program 1 times [2020-09-24 17:10:03,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:10:03,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937138923] [2020-09-24 17:10:03,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:10:03,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:10:03,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:03,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:03,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:05,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:06,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:06,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:11,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:13,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:14,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:14,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:15,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:15,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:15,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:17,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:17,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking...