/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invariants/const.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 13:30:41,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 13:30:41,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 13:30:41,859 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 13:30:41,860 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 13:30:41,862 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 13:30:41,864 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 13:30:41,868 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 13:30:41,870 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 13:30:41,873 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 13:30:41,874 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 13:30:41,875 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 13:30:41,875 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 13:30:41,878 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 13:30:41,879 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 13:30:41,880 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 13:30:41,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 13:30:41,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 13:30:41,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 13:30:41,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 13:30:41,889 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 13:30:41,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 13:30:41,891 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 13:30:41,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 13:30:41,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-02 13:30:41,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-02 13:30:41,897 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-02 13:30:41,898 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-02 13:30:41,899 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-02 13:30:41,899 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-02 13:30:41,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-02 13:30:41,900 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-02 13:30:41,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-02 13:30:41,901 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-02 13:30:41,902 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-02 13:30:41,902 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-02 13:30:41,903 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-02 13:30:41,903 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-02 13:30:41,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 13:30:41,904 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 13:30:41,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 13:30:41,907 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-05-02 13:30:41,937 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 13:30:41,937 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 13:30:41,939 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 13:30:41,939 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 13:30:41,939 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 13:30:41,939 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 13:30:41,940 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 13:30:41,940 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 13:30:41,940 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 13:30:41,940 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 13:30:41,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 13:30:41,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 13:30:41,941 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 13:30:41,941 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 13:30:41,941 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 13:30:41,941 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 13:30:41,941 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 13:30:41,942 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 13:30:41,942 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 13:30:41,942 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 13:30:41,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 13:30:41,942 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 13:30:41,942 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 13:30:41,943 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 13:30:41,943 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 13:30:41,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 13:30:41,943 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 13:30:41,943 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 13:30:41,943 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 13:30:42,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 13:30:42,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 13:30:42,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 13:30:42,245 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 13:30:42,246 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 13:30:42,246 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/const.c [2021-05-02 13:30:42,295 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f28a951f/66d2b147702645ed95a18c778041926b/FLAG803c54289 [2021-05-02 13:30:42,676 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 13:30:42,677 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/const.c [2021-05-02 13:30:42,689 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f28a951f/66d2b147702645ed95a18c778041926b/FLAG803c54289 [2021-05-02 13:30:42,704 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f28a951f/66d2b147702645ed95a18c778041926b [2021-05-02 13:30:42,706 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 13:30:42,707 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 13:30:42,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 13:30:42,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 13:30:42,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 13:30:42,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 01:30:42" (1/1) ... [2021-05-02 13:30:42,714 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@595f6ad5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:30:42, skipping insertion in model container [2021-05-02 13:30:42,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 01:30:42" (1/1) ... [2021-05-02 13:30:42,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 13:30:42,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 13:30:42,835 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/const.c[366,379] [2021-05-02 13:30:42,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 13:30:42,851 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 13:30:42,873 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/const.c[366,379] [2021-05-02 13:30:42,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 13:30:42,898 INFO L208 MainTranslator]: Completed translation [2021-05-02 13:30:42,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:30:42 WrapperNode [2021-05-02 13:30:42,898 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 13:30:42,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 13:30:42,899 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 13:30:42,900 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 13:30:42,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:30:42" (1/1) ... [2021-05-02 13:30:42,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:30:42" (1/1) ... [2021-05-02 13:30:42,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:30:42" (1/1) ... [2021-05-02 13:30:42,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:30:42" (1/1) ... [2021-05-02 13:30:42,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:30:42" (1/1) ... [2021-05-02 13:30:42,923 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:30:42" (1/1) ... [2021-05-02 13:30:42,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:30:42" (1/1) ... [2021-05-02 13:30:42,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 13:30:42,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 13:30:42,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 13:30:42,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 13:30:42,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:30:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2021-05-02 13:30:43,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 13:30:43,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 13:30:43,049 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 13:30:43,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 13:30:43,049 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 13:30:43,049 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 13:30:43,049 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 13:30:43,050 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 13:30:43,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 13:30:43,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-05-02 13:30:43,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 13:30:43,051 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 13:30:43,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 13:30:43,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 13:30:43,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 13:30:43,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 13:30:43,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 13:30:43,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 13:30:43,250 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 13:30:43,250 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 13:30:43,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 01:30:43 BoogieIcfgContainer [2021-05-02 13:30:43,251 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 13:30:43,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 13:30:43,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 13:30:43,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 13:30:43,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 01:30:42" (1/3) ... [2021-05-02 13:30:43,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f7eefd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 01:30:43, skipping insertion in model container [2021-05-02 13:30:43,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:30:42" (2/3) ... [2021-05-02 13:30:43,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f7eefd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 01:30:43, skipping insertion in model container [2021-05-02 13:30:43,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 01:30:43" (3/3) ... [2021-05-02 13:30:43,256 INFO L111 eAbstractionObserver]: Analyzing ICFG const.c [2021-05-02 13:30:43,261 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 13:30:43,264 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 13:30:43,274 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 13:30:43,288 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 13:30:43,288 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 13:30:43,288 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 13:30:43,288 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 13:30:43,288 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 13:30:43,288 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 13:30:43,288 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 13:30:43,289 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 13:30:43,298 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 15 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 13:30:43,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-02 13:30:43,301 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:30:43,301 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:30:43,301 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:30:43,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:30:43,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1921127477, now seen corresponding path program 1 times [2021-05-02 13:30:43,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:30:43,309 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278434405] [2021-05-02 13:30:43,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:30:43,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:30:43,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:30:43,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:30:43,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:30:43,558 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:30:43,558 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278434405] [2021-05-02 13:30:43,560 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278434405] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 13:30:43,560 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 13:30:43,560 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-02 13:30:43,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275040446] [2021-05-02 13:30:43,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 13:30:43,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:30:43,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 13:30:43,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-02 13:30:43,576 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 15 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:30:43,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:30:43,765 INFO L93 Difference]: Finished difference Result 34 states and 43 transitions. [2021-05-02 13:30:43,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 13:30:43,767 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-05-02 13:30:43,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:30:43,771 INFO L225 Difference]: With dead ends: 34 [2021-05-02 13:30:43,771 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 13:30:43,773 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 165.9ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-02 13:30:43,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 13:30:43,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 13:30:43,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-02 13:30:43,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 13:30:43,788 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-05-02 13:30:43,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:30:43,788 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 13:30:43,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:30:43,789 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 13:30:43,789 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 13:30:43,789 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 13:30:43,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-02 13:30:43,857 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-05-02 13:30:43,857 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-05-02 13:30:43,857 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-05-02 13:30:43,857 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-02 13:30:43,857 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-05-02 13:30:43,858 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-02 13:30:43,858 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-02 13:30:43,858 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-02 13:30:43,858 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-02 13:30:43,858 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-02 13:30:43,858 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 11 22) no Hoare annotation was computed. [2021-05-02 13:30:43,858 INFO L194 CegarLoopUtils]: At program point L17(lines 13 20) the Hoare annotation is: (= main_~s~0 (* (div main_~s~0 4294967296) 4294967296)) [2021-05-02 13:30:43,858 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 11 22) no Hoare annotation was computed. [2021-05-02 13:30:43,858 INFO L198 CegarLoopUtils]: For program point L13-2(lines 13 20) no Hoare annotation was computed. [2021-05-02 13:30:43,858 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 11 22) the Hoare annotation is: true [2021-05-02 13:30:43,858 INFO L194 CegarLoopUtils]: At program point L18(line 18) the Hoare annotation is: (= main_~s~0 (* (div main_~s~0 4294967296) 4294967296)) [2021-05-02 13:30:43,858 INFO L198 CegarLoopUtils]: For program point L14(lines 14 16) no Hoare annotation was computed. [2021-05-02 13:30:43,858 INFO L198 CegarLoopUtils]: For program point L14-2(lines 13 20) no Hoare annotation was computed. [2021-05-02 13:30:43,859 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2021-05-02 13:30:43,859 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2021-05-02 13:30:43,859 INFO L198 CegarLoopUtils]: For program point L7(line 7) no Hoare annotation was computed. [2021-05-02 13:30:43,859 INFO L198 CegarLoopUtils]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-05-02 13:30:43,859 INFO L198 CegarLoopUtils]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2021-05-02 13:30:43,859 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2021-05-02 13:30:43,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 01:30:43 BoogieIcfgContainer [2021-05-02 13:30:43,868 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 13:30:43,869 INFO L168 Benchmark]: Toolchain (without parser) took 1161.30 ms. Allocated memory is still 204.5 MB. Free memory was 167.9 MB in the beginning and 110.1 MB in the end (delta: 57.7 MB). Peak memory consumption was 57.4 MB. Max. memory is 8.0 GB. [2021-05-02 13:30:43,869 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 204.5 MB. Free memory is still 184.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 13:30:43,869 INFO L168 Benchmark]: CACSL2BoogieTranslator took 188.46 ms. Allocated memory is still 204.5 MB. Free memory was 167.7 MB in the beginning and 188.0 MB in the end (delta: -20.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-05-02 13:30:43,870 INFO L168 Benchmark]: Boogie Preprocessor took 30.82 ms. Allocated memory is still 204.5 MB. Free memory was 188.0 MB in the beginning and 186.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 13:30:43,870 INFO L168 Benchmark]: RCFGBuilder took 320.35 ms. Allocated memory is still 204.5 MB. Free memory was 186.3 MB in the beginning and 172.9 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-05-02 13:30:43,871 INFO L168 Benchmark]: TraceAbstraction took 615.25 ms. Allocated memory is still 204.5 MB. Free memory was 172.3 MB in the beginning and 110.1 MB in the end (delta: 62.2 MB). Peak memory consumption was 61.9 MB. Max. memory is 8.0 GB. [2021-05-02 13:30:43,872 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 204.5 MB. Free memory is still 184.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 188.46 ms. Allocated memory is still 204.5 MB. Free memory was 167.7 MB in the beginning and 188.0 MB in the end (delta: -20.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.82 ms. Allocated memory is still 204.5 MB. Free memory was 188.0 MB in the beginning and 186.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 320.35 ms. Allocated memory is still 204.5 MB. Free memory was 186.3 MB in the beginning and 172.9 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 615.25 ms. Allocated memory is still 204.5 MB. Free memory was 172.3 MB in the beginning and 110.1 MB in the end (delta: 62.2 MB). Peak memory consumption was 61.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 503.0ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 5.0ms, AutomataDifference: 208.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 67.3ms, InitialAbstractionConstructionTime: 6.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 15 SDtfs, 21 SDslu, 23 SDs, 0 SdLazy, 31 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 43.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 165.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 5.8ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 10 NumberOfFragments, 49 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 19.0ms HoareSimplificationTime, 7 FomulaSimplificationsInter, 130 FormulaSimplificationTreeSizeReductionInter, 43.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 19.4ms SsaConstructionTime, 48.4ms SatisfiabilityAnalysisTime, 143.2ms InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 60 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: s == s / 4294967296 * 4294967296 RESULT: Ultimate proved your program to be correct! Received shutdown request...