/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id2_b2_o3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:01:27,327 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:01:27,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:01:27,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:01:27,372 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:01:27,383 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:01:27,385 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:01:27,389 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:01:27,392 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:01:27,395 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:01:27,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:01:27,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:01:27,397 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:01:27,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:01:27,403 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:01:27,405 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:01:27,405 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:01:27,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:01:27,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:01:27,415 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:01:27,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:01:27,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:01:27,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:01:27,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:01:27,425 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:01:27,425 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:01:27,425 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:01:27,428 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:01:27,428 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:01:27,429 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:01:27,429 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:01:27,430 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:01:27,431 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:01:27,432 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:01:27,433 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:01:27,433 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:01:27,434 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:01:27,434 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:01:27,434 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:01:27,435 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:01:27,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:01:27,438 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 10:01:27,483 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:01:27,484 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:01:27,486 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:01:27,486 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:01:27,486 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:01:27,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:01:27,487 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:01:27,487 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:01:27,487 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:01:27,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:01:27,489 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:01:27,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:01:27,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:01:27,489 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:01:27,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:01:27,490 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:01:27,490 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:01:27,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:01:27,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:01:27,491 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:01:27,491 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:01:27,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:01:27,491 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:01:27,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:01:27,492 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:01:27,492 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:01:27,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:01:27,492 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:01:27,493 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:01:27,493 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:01:27,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:01:27,950 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:01:27,955 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:01:27,956 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:01:27,957 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:01:27,958 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id2_b2_o3.c [2020-09-25 10:01:28,040 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c749344c/a173ff3ae632454c8d299b0fda308064/FLAGaae334941 [2020-09-25 10:01:28,562 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:01:28,563 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id2_b2_o3.c [2020-09-25 10:01:28,571 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c749344c/a173ff3ae632454c8d299b0fda308064/FLAGaae334941 [2020-09-25 10:01:28,896 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c749344c/a173ff3ae632454c8d299b0fda308064 [2020-09-25 10:01:28,909 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:01:28,916 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:01:28,920 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:01:28,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:01:28,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:01:28,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:01:28" (1/1) ... [2020-09-25 10:01:28,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64f92ea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:28, skipping insertion in model container [2020-09-25 10:01:28,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:01:28" (1/1) ... [2020-09-25 10:01:28,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:01:28,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:01:29,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:01:29,256 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:01:29,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:01:29,288 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:01:29,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:29 WrapperNode [2020-09-25 10:01:29,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:01:29,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:01:29,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:01:29,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:01:29,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:29" (1/1) ... [2020-09-25 10:01:29,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:29" (1/1) ... [2020-09-25 10:01:29,310 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:29" (1/1) ... [2020-09-25 10:01:29,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:29" (1/1) ... [2020-09-25 10:01:29,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:29" (1/1) ... [2020-09-25 10:01:29,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:29" (1/1) ... [2020-09-25 10:01:29,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:29" (1/1) ... [2020-09-25 10:01:29,409 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:01:29,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:01:29,410 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:01:29,410 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:01:29,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:01:29,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:01:29,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:01:29,489 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-25 10:01:29,490 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2020-09-25 10:01:29,490 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:01:29,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 10:01:29,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:01:29,490 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-25 10:01:29,491 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2020-09-25 10:01:29,491 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:01:29,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:01:29,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:01:29,712 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:01:29,712 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 10:01:29,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:01:29 BoogieIcfgContainer [2020-09-25 10:01:29,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:01:29,721 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:01:29,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:01:29,727 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:01:29,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:01:28" (1/3) ... [2020-09-25 10:01:29,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20af20ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:01:29, skipping insertion in model container [2020-09-25 10:01:29,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:29" (2/3) ... [2020-09-25 10:01:29,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20af20ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:01:29, skipping insertion in model container [2020-09-25 10:01:29,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:01:29" (3/3) ... [2020-09-25 10:01:29,733 INFO L109 eAbstractionObserver]: Analyzing ICFG id2_b2_o3.c [2020-09-25 10:01:29,751 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:01:29,761 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:01:29,787 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:01:29,822 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:01:29,823 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:01:29,823 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:01:29,823 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:01:29,823 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:01:29,824 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:01:29,824 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:01:29,824 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:01:29,862 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-09-25 10:01:29,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 10:01:29,871 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:01:29,872 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:01:29,873 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:01:29,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:01:29,882 INFO L82 PathProgramCache]: Analyzing trace with hash 875745540, now seen corresponding path program 1 times [2020-09-25 10:01:29,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:01:29,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611024146] [2020-09-25 10:01:29,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:01:30,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:30,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:30,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:30,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:01:30,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:30,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 10:01:30,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:30,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:30,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:01:30,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:01:30,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:01:30,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 10:01:30,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:01:30,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:30,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:30,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:30,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:01:30,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:30,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:01:30,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:30,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:30,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:30,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:30,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:30,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:30,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 10:01:30,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:30,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:30,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:30,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:30,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:30,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 10:01:30,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:30,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:30,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:01:30,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:30,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:01:30,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:30,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:01:30,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611024146] [2020-09-25 10:01:30,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:01:30,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:01:30,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239901211] [2020-09-25 10:01:30,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:01:30,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:01:30,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:01:30,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:01:30,300 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 5 states. [2020-09-25 10:01:30,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:01:30,411 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2020-09-25 10:01:30,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 10:01:30,414 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 10:01:30,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:01:30,427 INFO L225 Difference]: With dead ends: 51 [2020-09-25 10:01:30,427 INFO L226 Difference]: Without dead ends: 36 [2020-09-25 10:01:30,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:01:30,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-25 10:01:30,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-25 10:01:30,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-25 10:01:30,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-09-25 10:01:30,486 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 16 [2020-09-25 10:01:30,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:01:30,487 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-09-25 10:01:30,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:01:30,487 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-09-25 10:01:30,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-25 10:01:30,490 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:01:30,490 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] [2020-09-25 10:01:30,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:01:30,491 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:01:30,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:01:30,491 INFO L82 PathProgramCache]: Analyzing trace with hash 71846672, now seen corresponding path program 1 times [2020-09-25 10:01:30,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:01:30,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754161465] [2020-09-25 10:01:30,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:01:30,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:30,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:30,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:30,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:30,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 10:01:30,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:01:30,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-09-25 10:01:30,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:30,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:30,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:01:30,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 10:01:30,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 10:01:30,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:01:30,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:01:30,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:30,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:30,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:30,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:01:30,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:30,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:01:30,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:30,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:30,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:30,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:30,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:30,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:30,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 10:01:30,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:30,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:31,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:31,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 10:01:31,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:31,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 10:01:31,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:31,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:31,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:01:31,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:31,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:01:31,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:31,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:31,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:31,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:31,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:31,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:31,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 10:01:31,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:31,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:31,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:01:31,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:31,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:01:31,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:31,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:01:31,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754161465] [2020-09-25 10:01:31,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:01:31,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 10:01:31,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112967583] [2020-09-25 10:01:31,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:01:31,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:01:31,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:01:31,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:01:31,266 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 8 states. [2020-09-25 10:01:31,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:01:31,387 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2020-09-25 10:01:31,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 10:01:31,388 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-09-25 10:01:31,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:01:31,390 INFO L225 Difference]: With dead ends: 66 [2020-09-25 10:01:31,390 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 10:01:31,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:01:31,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 10:01:31,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 10:01:31,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 10:01:31,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-09-25 10:01:31,402 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 25 [2020-09-25 10:01:31,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:01:31,402 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-09-25 10:01:31,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:01:31,403 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-09-25 10:01:31,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 10:01:31,404 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:01:31,405 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 10:01:31,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:01:31,405 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:01:31,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:01:31,406 INFO L82 PathProgramCache]: Analyzing trace with hash -511991682, now seen corresponding path program 1 times [2020-09-25 10:01:31,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:01:31,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [695026533] [2020-09-25 10:01:31,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:01:31,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:31,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:31,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:31,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:32,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:32,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 10:01:32,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:01:32,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 724 [2020-09-25 10:01:32,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:32,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:32,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:01:32,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 10:01:32,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:01:32,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:32,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:01:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:32,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:32,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:32,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:01:32,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:32,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:01:32,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:32,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:32,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:32,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:32,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:32,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:32,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 10:01:32,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:32,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:32,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:32,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:33,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:33,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 10:01:33,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:01:33,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 819 [2020-09-25 10:01:33,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:33,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:33,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:01:33,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:33,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 10:01:33,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:33,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:33,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:33,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:33,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:33,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:33,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 10:01:33,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:01:33,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 10:01:33,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:33,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:33,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:01:33,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 10:01:33,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:01:33,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 10:01:33,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:33,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:33,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:33,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:33,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:33,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 10:01:33,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:33,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:33,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:01:33,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:33,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:01:33,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:33,264 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 10:01:33,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [695026533] [2020-09-25 10:01:33,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:01:33,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:01:33,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016042277] [2020-09-25 10:01:33,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:01:33,267 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:01:33,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:01:33,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:01:33,267 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 9 states. [2020-09-25 10:01:33,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:01:33,406 INFO L93 Difference]: Finished difference Result 69 states and 78 transitions. [2020-09-25 10:01:33,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:01:33,407 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-09-25 10:01:33,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:01:33,408 INFO L225 Difference]: With dead ends: 69 [2020-09-25 10:01:33,408 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 10:01:33,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:01:33,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 10:01:33,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 10:01:33,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 10:01:33,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 10:01:33,410 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2020-09-25 10:01:33,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:01:33,411 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 10:01:33,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:01:33,411 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 10:01:33,411 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 10:01:33,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:01:33,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 10:01:33,450 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 10:01:33,450 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 10:01:33,450 INFO L268 CegarLoopResult]: For program point id2FINAL(lines 14 19) no Hoare annotation was computed. [2020-09-25 10:01:33,451 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 10:01:33,451 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 10:01:33,451 INFO L271 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-09-25 10:01:33,451 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-25 10:01:33,451 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 10:01:33,451 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-25 10:01:33,452 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-25 10:01:33,452 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-25 10:01:33,452 INFO L268 CegarLoopResult]: For program point id2EXIT(lines 14 19) no Hoare annotation was computed. [2020-09-25 10:01:33,452 INFO L271 CegarLoopResult]: At program point id2ENTRY(lines 14 19) the Hoare annotation is: true [2020-09-25 10:01:33,452 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 10:01:33,452 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 10:01:33,453 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 10:01:33,453 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 10:01:33,453 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2020-09-25 10:01:33,453 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 21 27) the Hoare annotation is: true [2020-09-25 10:01:33,454 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 10:01:33,454 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 21 27) no Hoare annotation was computed. [2020-09-25 10:01:33,454 INFO L268 CegarLoopResult]: For program point L24(lines 24 26) no Hoare annotation was computed. [2020-09-25 10:01:33,455 INFO L271 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: true [2020-09-25 10:01:33,455 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 10:01:33,455 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-25 10:01:33,455 INFO L268 CegarLoopResult]: For program point L24-2(lines 21 27) no Hoare annotation was computed. [2020-09-25 10:01:33,455 INFO L268 CegarLoopResult]: For program point L23-2(line 23) no Hoare annotation was computed. [2020-09-25 10:01:33,455 INFO L268 CegarLoopResult]: For program point idFINAL(lines 7 12) no Hoare annotation was computed. [2020-09-25 10:01:33,456 INFO L268 CegarLoopResult]: For program point idEXIT(lines 7 12) no Hoare annotation was computed. [2020-09-25 10:01:33,456 INFO L271 CegarLoopResult]: At program point idENTRY(lines 7 12) the Hoare annotation is: true [2020-09-25 10:01:33,456 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-25 10:01:33,456 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-25 10:01:33,456 INFO L271 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: true [2020-09-25 10:01:33,456 INFO L268 CegarLoopResult]: For program point L10-1(line 10) no Hoare annotation was computed. [2020-09-25 10:01:33,456 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 10:01:33,457 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-09-25 10:01:33,457 INFO L268 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-09-25 10:01:33,457 INFO L268 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-09-25 10:01:33,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 10:01:33 BoogieIcfgContainer [2020-09-25 10:01:33,467 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 10:01:33,474 INFO L168 Benchmark]: Toolchain (without parser) took 4558.54 ms. Allocated memory was 147.3 MB in the beginning and 243.8 MB in the end (delta: 96.5 MB). Free memory was 102.5 MB in the beginning and 135.1 MB in the end (delta: -32.6 MB). Peak memory consumption was 63.9 MB. Max. memory is 7.1 GB. [2020-09-25 10:01:33,474 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 147.3 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 10:01:33,476 INFO L168 Benchmark]: CACSL2BoogieTranslator took 369.33 ms. Allocated memory is still 147.3 MB. Free memory was 101.8 MB in the beginning and 92.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-09-25 10:01:33,477 INFO L168 Benchmark]: Boogie Preprocessor took 119.15 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 92.5 MB in the beginning and 183.0 MB in the end (delta: -90.5 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-09-25 10:01:33,479 INFO L168 Benchmark]: RCFGBuilder took 310.67 ms. Allocated memory is still 203.9 MB. Free memory was 183.0 MB in the beginning and 169.2 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-09-25 10:01:33,487 INFO L168 Benchmark]: TraceAbstraction took 3745.78 ms. Allocated memory was 203.9 MB in the beginning and 243.8 MB in the end (delta: 39.8 MB). Free memory was 168.5 MB in the beginning and 135.1 MB in the end (delta: 33.5 MB). Peak memory consumption was 73.3 MB. Max. memory is 7.1 GB. [2020-09-25 10:01:33,498 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 147.3 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 369.33 ms. Allocated memory is still 147.3 MB. Free memory was 101.8 MB in the beginning and 92.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.15 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 92.5 MB in the beginning and 183.0 MB in the end (delta: -90.5 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 310.67 ms. Allocated memory is still 203.9 MB. Free memory was 183.0 MB in the beginning and 169.2 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3745.78 ms. Allocated memory was 203.9 MB in the beginning and 243.8 MB in the end (delta: 39.8 MB). Free memory was 168.5 MB in the beginning and 135.1 MB in the end (delta: 33.5 MB). Peak memory consumption was 73.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 111 SDtfs, 14 SDslu, 546 SDs, 0 SdLazy, 91 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 11 PreInvPairs, 11 NumberOfFragments, 9 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 6450 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 2/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...