/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 SequenceOfStatements --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=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/ldv-regression/test11.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:55:04,794 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:55:04,798 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:55:04,833 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:55:04,834 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:55:04,836 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:55:04,837 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:55:04,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:55:04,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:55:04,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:55:04,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:55:04,845 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:55:04,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:55:04,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:55:04,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:55:04,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:55:04,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:55:04,852 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:55:04,854 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:55:04,856 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:55:04,858 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:55:04,859 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:55:04,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:55:04,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:55:04,867 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:55:04,867 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:55:04,868 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:55:04,869 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:55:04,869 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:55:04,874 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:55:04,874 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:55:04,875 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:55:04,879 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:55:04,881 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:55:04,883 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:55:04,884 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:55:04,885 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:55:04,885 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:55:04,885 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:55:04,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:55:04,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:55:04,890 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 [2020-10-27 19:55:04,953 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:55:04,954 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:55:04,958 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:55:04,958 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:55:04,958 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:55:04,959 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:55:04,959 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:55:04,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:55:04,962 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:55:04,962 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:55:04,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:55:04,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:55:04,964 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:55:04,964 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:55:04,964 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:55:04,965 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:55:04,965 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:55:04,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:55:04,966 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:55:04,966 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:55:04,966 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:55:04,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:55:04,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:55:04,967 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:55:04,968 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:55:04,968 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:55:04,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:55:04,968 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:55:04,968 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:55:04,969 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:55:05,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:55:05,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:55:05,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:55:05,434 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:55:05,434 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:55:05,435 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test11.c [2020-10-27 19:55:05,522 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/957d22579/1f44674f257648ceab9733c9af75d84f/FLAGfc972a19f [2020-10-27 19:55:06,177 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:55:06,178 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test11.c [2020-10-27 19:55:06,185 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/957d22579/1f44674f257648ceab9733c9af75d84f/FLAGfc972a19f [2020-10-27 19:55:06,551 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/957d22579/1f44674f257648ceab9733c9af75d84f [2020-10-27 19:55:06,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:55:06,564 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:55:06,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:55:06,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:55:06,571 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:55:06,572 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:55:06" (1/1) ... [2020-10-27 19:55:06,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7709b6bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:06, skipping insertion in model container [2020-10-27 19:55:06,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:55:06" (1/1) ... [2020-10-27 19:55:06,584 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:55:06,600 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:55:06,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:55:06,777 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:55:06,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:55:06,819 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:55:06,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:06 WrapperNode [2020-10-27 19:55:06,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:55:06,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:55:06,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:55:06,822 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:55:06,835 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:06" (1/1) ... [2020-10-27 19:55:06,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:06" (1/1) ... [2020-10-27 19:55:06,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:06" (1/1) ... [2020-10-27 19:55:06,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:06" (1/1) ... [2020-10-27 19:55:06,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:06" (1/1) ... [2020-10-27 19:55:06,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:06" (1/1) ... [2020-10-27 19:55:06,857 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:06" (1/1) ... [2020-10-27 19:55:06,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:55:06,861 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:55:06,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:55:06,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:55:06,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:06" (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 [2020-10-27 19:55:06,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:55:06,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:55:06,942 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:55:06,942 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2020-10-27 19:55:06,943 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:55:06,943 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:55:06,943 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:55:06,943 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:55:06,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:55:06,944 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 19:55:06,944 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 19:55:06,944 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2020-10-27 19:55:06,944 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:55:06,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:55:06,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:55:06,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:55:06,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:55:06,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:55:06,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:55:07,400 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:55:07,401 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 19:55:07,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:55:07 BoogieIcfgContainer [2020-10-27 19:55:07,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:55:07,406 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:55:07,406 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:55:07,409 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:55:07,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:55:06" (1/3) ... [2020-10-27 19:55:07,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c79e0c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:55:07, skipping insertion in model container [2020-10-27 19:55:07,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:06" (2/3) ... [2020-10-27 19:55:07,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c79e0c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:55:07, skipping insertion in model container [2020-10-27 19:55:07,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:55:07" (3/3) ... [2020-10-27 19:55:07,414 INFO L111 eAbstractionObserver]: Analyzing ICFG test11.c [2020-10-27 19:55:07,426 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:55:07,432 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:55:07,445 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:55:07,476 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:55:07,476 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:55:07,476 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:55:07,477 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:55:07,477 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:55:07,477 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:55:07,477 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:55:07,477 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:55:07,495 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-27 19:55:07,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-27 19:55:07,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:55:07,502 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:55:07,502 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:55:07,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:55:07,509 INFO L82 PathProgramCache]: Analyzing trace with hash -2136784098, now seen corresponding path program 1 times [2020-10-27 19:55:07,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:55:07,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812785194] [2020-10-27 19:55:07,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:55:07,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:55:07,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:55:08,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:55:08,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:55:08,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 19:55:08,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:55:08,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 478 [2020-10-27 19:55:08,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:55:08,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:55:08,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 19:55:08,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 19:55:08,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 19:55:08,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:55:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:55:08,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:55:08,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:55:08,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:55:08,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:55:08,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 19:55:08,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:55:08,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:55:08,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:55:08,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:55:08,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:55:08,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:55:08,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:55:08,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:55:08,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:55:08,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 19:55:08,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:55:08,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 19:55:08,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:55:08,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:55:08,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:55:08,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 19:55:08,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:55:08,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:55:08,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [812785194] [2020-10-27 19:55:08,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:55:08,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 19:55:08,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210514105] [2020-10-27 19:55:08,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:55:08,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:55:08,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:55:08,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:55:08,471 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 5 states. [2020-10-27 19:55:08,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:55:08,666 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2020-10-27 19:55:08,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:55:08,669 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-27 19:55:08,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:55:08,678 INFO L225 Difference]: With dead ends: 36 [2020-10-27 19:55:08,678 INFO L226 Difference]: Without dead ends: 20 [2020-10-27 19:55:08,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:55:08,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-27 19:55:08,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-27 19:55:08,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-27 19:55:08,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-10-27 19:55:08,741 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 16 [2020-10-27 19:55:08,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:55:08,741 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-10-27 19:55:08,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:55:08,743 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-10-27 19:55:08,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-27 19:55:08,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:55:08,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:55:08,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:55:08,746 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:55:08,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:55:08,748 INFO L82 PathProgramCache]: Analyzing trace with hash -406152648, now seen corresponding path program 1 times [2020-10-27 19:55:08,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:55:08,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090918904] [2020-10-27 19:55:08,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:55:08,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:55:08,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:55:08,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:55:09,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:55:09,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 19:55:09,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:55:09,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 453 [2020-10-27 19:55:09,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:55:09,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:55:09,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 19:55:09,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 19:55:09,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:55:09,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:55:09,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:55:09,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:55:09,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:55:09,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:55:09,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:55:09,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 19:55:09,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:55:09,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:55:09,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:55:09,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:55:09,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:55:09,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:55:09,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:55:09,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:55:09,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:55:09,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 19:55:09,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:55:09,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 19:55:09,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:55:09,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:55:09,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:55:09,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:55:09,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:55:09,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:55:09,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090918904] [2020-10-27 19:55:09,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:55:09,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 19:55:09,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223130441] [2020-10-27 19:55:09,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 19:55:09,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:55:09,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 19:55:09,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:55:09,406 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 6 states. [2020-10-27 19:55:09,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:55:09,617 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2020-10-27 19:55:09,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 19:55:09,618 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-27 19:55:09,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:55:09,620 INFO L225 Difference]: With dead ends: 23 [2020-10-27 19:55:09,620 INFO L226 Difference]: Without dead ends: 20 [2020-10-27 19:55:09,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-27 19:55:09,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-27 19:55:09,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-27 19:55:09,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-27 19:55:09,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-10-27 19:55:09,637 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 18 [2020-10-27 19:55:09,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:55:09,637 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-10-27 19:55:09,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 19:55:09,638 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-10-27 19:55:09,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-27 19:55:09,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:55:09,639 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:55:09,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:55:09,641 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:55:09,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:55:09,642 INFO L82 PathProgramCache]: Analyzing trace with hash 294210658, now seen corresponding path program 1 times [2020-10-27 19:55:09,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:55:09,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752002208] [2020-10-27 19:55:09,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:55:09,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:55:09,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:55:09,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:55:09,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 19:55:09,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:55:09,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-27 19:55:09,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:55:09,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 19:55:09,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 19:55:09,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 19:55:09,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:55:09,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:55:09,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:55:09,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:55:09,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:55:09,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:55:09,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:55:09,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 19:55:09,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:55:09,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:55:09,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:55:09,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:55:09,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:55:09,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 19:55:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:55:09,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:55:09,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:55:09,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 19:55:09,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:55:09,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 19:55:09,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:55:09,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:55:09,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:55:09,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 19:55:09,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:55:09,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:55:09,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752002208] [2020-10-27 19:55:09,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:55:09,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 19:55:09,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570438227] [2020-10-27 19:55:09,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:55:09,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:55:09,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:55:09,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:55:09,972 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 5 states. [2020-10-27 19:55:10,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:55:10,073 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2020-10-27 19:55:10,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:55:10,074 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-27 19:55:10,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:55:10,074 INFO L225 Difference]: With dead ends: 20 [2020-10-27 19:55:10,074 INFO L226 Difference]: Without dead ends: 0 [2020-10-27 19:55:10,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:55:10,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-27 19:55:10,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-27 19:55:10,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-27 19:55:10,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-27 19:55:10,076 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-10-27 19:55:10,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:55:10,076 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-27 19:55:10,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:55:10,077 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-27 19:55:10,077 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-27 19:55:10,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 19:55:10,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-27 19:55:10,268 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-27 19:55:10,269 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-27 19:55:10,269 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-27 19:55:10,269 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-27 19:55:10,269 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-27 19:55:10,270 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |~#a~0.base| |old(~#a~0.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-10-27 19:55:10,270 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-27 19:55:10,270 INFO L274 CegarLoopResult]: For program point get_dummyFINAL(lines 9 12) no Hoare annotation was computed. [2020-10-27 19:55:10,270 INFO L274 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-10-27 19:55:10,270 INFO L277 CegarLoopResult]: At program point get_dummyENTRY(lines 9 12) the Hoare annotation is: true [2020-10-27 19:55:10,270 INFO L274 CegarLoopResult]: For program point get_dummyEXIT(lines 9 12) no Hoare annotation was computed. [2020-10-27 19:55:10,270 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-27 19:55:10,271 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-27 19:55:10,271 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-27 19:55:10,271 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-27 19:55:10,271 INFO L270 CegarLoopResult]: At program point L27(lines 14 34) the Hoare annotation is: false [2020-10-27 19:55:10,271 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 14 34) no Hoare annotation was computed. [2020-10-27 19:55:10,272 INFO L274 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-10-27 19:55:10,272 INFO L270 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (and (or (<= (+ main_~pc~0.base 1) 0) (<= 1 main_~pc~0.base)) (= main_~pc~0.base |main_~#c~0.base|) (= |main_~#c~0.offset| main_~pc~0.offset)) [2020-10-27 19:55:10,272 INFO L274 CegarLoopResult]: For program point L21-2(line 21) no Hoare annotation was computed. [2020-10-27 19:55:10,272 INFO L274 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-10-27 19:55:10,272 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 14 34) no Hoare annotation was computed. [2020-10-27 19:55:10,272 INFO L274 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-10-27 19:55:10,273 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 14 34) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-10-27 19:55:10,273 INFO L274 CegarLoopResult]: For program point L26(lines 26 28) no Hoare annotation was computed. [2020-10-27 19:55:10,273 INFO L274 CegarLoopResult]: For program point L20(lines 20 21) no Hoare annotation was computed. [2020-10-27 19:55:10,273 INFO L274 CegarLoopResult]: For program point L20-2(lines 20 23) no Hoare annotation was computed. [2020-10-27 19:55:10,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:55:10 BoogieIcfgContainer [2020-10-27 19:55:10,284 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 19:55:10,287 INFO L168 Benchmark]: Toolchain (without parser) took 3726.54 ms. Allocated memory is still 164.6 MB. Free memory was 140.2 MB in the beginning and 144.0 MB in the end (delta: -3.8 MB). Peak memory consumption was 88.4 MB. Max. memory is 8.0 GB. [2020-10-27 19:55:10,287 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 125.8 MB. Free memory is still 84.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:55:10,288 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.96 ms. Allocated memory is still 164.6 MB. Free memory was 139.6 MB in the beginning and 130.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 19:55:10,289 INFO L168 Benchmark]: Boogie Preprocessor took 38.77 ms. Allocated memory is still 164.6 MB. Free memory was 130.3 MB in the beginning and 128.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 19:55:10,290 INFO L168 Benchmark]: RCFGBuilder took 542.63 ms. Allocated memory is still 164.6 MB. Free memory was 128.7 MB in the beginning and 112.7 MB in the end (delta: 16.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-10-27 19:55:10,291 INFO L168 Benchmark]: TraceAbstraction took 2878.49 ms. Allocated memory is still 164.6 MB. Free memory was 112.1 MB in the beginning and 144.0 MB in the end (delta: -31.9 MB). Peak memory consumption was 60.1 MB. Max. memory is 8.0 GB. [2020-10-27 19:55:10,294 INFO L339 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 125.8 MB. Free memory is still 84.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 253.96 ms. Allocated memory is still 164.6 MB. Free memory was 139.6 MB in the beginning and 130.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.77 ms. Allocated memory is still 164.6 MB. Free memory was 130.3 MB in the beginning and 128.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 542.63 ms. Allocated memory is still 164.6 MB. Free memory was 128.7 MB in the beginning and 112.7 MB in the end (delta: 16.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2878.49 ms. Allocated memory is still 164.6 MB. Free memory was 112.1 MB in the beginning and 144.0 MB in the end (delta: -31.9 MB). Peak memory consumption was 60.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 43 SDtfs, 30 SDslu, 68 SDs, 0 SdLazy, 108 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 10 PreInvPairs, 10 NumberOfFragments, 71 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 78 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 4079 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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...