/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/just_assert.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 16:09:55,883 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 16:09:55,886 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 16:09:55,931 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 16:09:55,932 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 16:09:55,934 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 16:09:55,935 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 16:09:55,938 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 16:09:55,940 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 16:09:55,941 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 16:09:55,942 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 16:09:55,943 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 16:09:55,944 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 16:09:55,945 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 16:09:55,946 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 16:09:55,948 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 16:09:55,949 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 16:09:55,950 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 16:09:55,952 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 16:09:55,954 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 16:09:55,956 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 16:09:55,959 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 16:09:55,960 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 16:09:55,961 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 16:09:55,965 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 16:09:55,975 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 16:09:55,976 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 16:09:55,977 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 16:09:55,980 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 [2021-02-21 16:09:56,043 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 16:09:56,046 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 16:09:56,048 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 16:09:56,048 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 16:09:56,048 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 16:09:56,049 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 16:09:56,049 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 16:09:56,049 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 16:09:56,049 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 16:09:56,049 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 16:09:56,050 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 16:09:56,051 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 16:09:56,051 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 16:09:56,051 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 16:09:56,052 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 16:09:56,052 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 16:09:56,052 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 16:09:56,052 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 16:09:56,053 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 16:09:56,053 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 16:09:56,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:09:56,054 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 16:09:56,054 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 16:09:56,054 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 16:09:56,055 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 16:09:56,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 16:09:56,055 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 16:09:56,055 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 16:09:56,056 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 16:09:56,470 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 16:09:56,496 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 16:09:56,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 16:09:56,501 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 16:09:56,502 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 16:09:56,503 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/just_assert.i [2021-02-21 16:09:56,589 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f9bf6e55/8a7be07c57684324bc0f5941f0e34cb4/FLAG456a17249 [2021-02-21 16:09:57,185 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 16:09:57,186 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/just_assert.i [2021-02-21 16:09:57,196 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f9bf6e55/8a7be07c57684324bc0f5941f0e34cb4/FLAG456a17249 [2021-02-21 16:09:57,587 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f9bf6e55/8a7be07c57684324bc0f5941f0e34cb4 [2021-02-21 16:09:57,592 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 16:09:57,613 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 16:09:57,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 16:09:57,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 16:09:57,620 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 16:09:57,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:09:57" (1/1) ... [2021-02-21 16:09:57,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f55b5c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:57, skipping insertion in model container [2021-02-21 16:09:57,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:09:57" (1/1) ... [2021-02-21 16:09:57,634 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 16:09:57,651 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 16:09:57,873 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/just_assert.i[300,313] [2021-02-21 16:09:57,880 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:09:57,891 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 16:09:57,905 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/just_assert.i[300,313] [2021-02-21 16:09:57,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:09:57,922 INFO L208 MainTranslator]: Completed translation [2021-02-21 16:09:57,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:57 WrapperNode [2021-02-21 16:09:57,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 16:09:57,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 16:09:57,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 16:09:57,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 16:09:57,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:57" (1/1) ... [2021-02-21 16:09:57,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:57" (1/1) ... [2021-02-21 16:09:57,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:57" (1/1) ... [2021-02-21 16:09:57,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:57" (1/1) ... [2021-02-21 16:09:57,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:57" (1/1) ... [2021-02-21 16:09:57,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:57" (1/1) ... [2021-02-21 16:09:57,952 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:57" (1/1) ... [2021-02-21 16:09:57,954 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 16:09:57,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 16:09:57,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 16:09:57,956 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 16:09:57,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:57" (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 [2021-02-21 16:09:58,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 16:09:58,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 16:09:58,058 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 16:09:58,058 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 16:09:58,059 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 16:09:58,059 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 16:09:58,059 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 16:09:58,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 16:09:58,061 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 16:09:58,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 16:09:58,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 16:09:58,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 16:09:58,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 16:09:58,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 16:09:58,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 16:09:58,284 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 16:09:58,284 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-21 16:09:58,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:09:58 BoogieIcfgContainer [2021-02-21 16:09:58,286 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 16:09:58,289 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 16:09:58,289 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 16:09:58,292 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 16:09:58,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 04:09:57" (1/3) ... [2021-02-21 16:09:58,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36bd2504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:09:58, skipping insertion in model container [2021-02-21 16:09:58,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:09:57" (2/3) ... [2021-02-21 16:09:58,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36bd2504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:09:58, skipping insertion in model container [2021-02-21 16:09:58,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:09:58" (3/3) ... [2021-02-21 16:09:58,296 INFO L111 eAbstractionObserver]: Analyzing ICFG just_assert.i [2021-02-21 16:09:58,304 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 16:09:58,309 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 16:09:58,329 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 16:09:58,358 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 16:09:58,359 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 16:09:58,359 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 16:09:58,359 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 16:09:58,359 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 16:09:58,359 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 16:09:58,360 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 16:09:58,360 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 16:09:58,378 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2021-02-21 16:09:58,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-02-21 16:09:58,384 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:09:58,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:09:58,385 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:09:58,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:09:58,392 INFO L82 PathProgramCache]: Analyzing trace with hash 598621813, now seen corresponding path program 1 times [2021-02-21 16:09:58,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:09:58,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523542544] [2021-02-21 16:09:58,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:09:58,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:09:58,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:58,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:58,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:58,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:58,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:09:58,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:09:58,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:09:58,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:09:58,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:09:58,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523542544] [2021-02-21 16:09:58,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:09:58,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 16:09:58,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348903333] [2021-02-21 16:09:58,668 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 16:09:58,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:09:58,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 16:09:58,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 16:09:58,689 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 3 states. [2021-02-21 16:09:58,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:09:58,737 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2021-02-21 16:09:58,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 16:09:58,739 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2021-02-21 16:09:58,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:09:58,745 INFO L225 Difference]: With dead ends: 18 [2021-02-21 16:09:58,746 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 16:09:58,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 16:09:58,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 16:09:58,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 16:09:58,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 16:09:58,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 16:09:58,776 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-02-21 16:09:58,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:09:58,777 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 16:09:58,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 16:09:58,777 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 16:09:58,777 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 16:09:58,777 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 16:09:58,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 16:09:58,853 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-21 16:09:58,854 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-21 16:09:58,854 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-21 16:09:58,854 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-02-21 16:09:58,855 INFO L185 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|)) [2021-02-21 16:09:58,855 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-02-21 16:09:58,855 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-02-21 16:09:58,855 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 16:09:58,856 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 16:09:58,856 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-02-21 16:09:58,856 INFO L189 CegarLoopUtils]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2021-02-21 16:09:58,856 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 7 13) the Hoare annotation is: true [2021-02-21 16:09:58,857 INFO L189 CegarLoopUtils]: For program point mainFINAL(lines 7 13) no Hoare annotation was computed. [2021-02-21 16:09:58,857 INFO L189 CegarLoopUtils]: For program point L10(line 10) no Hoare annotation was computed. [2021-02-21 16:09:58,857 INFO L189 CegarLoopUtils]: For program point mainEXIT(lines 7 13) no Hoare annotation was computed. [2021-02-21 16:09:58,857 INFO L189 CegarLoopUtils]: For program point L9-1(lines 9 11) no Hoare annotation was computed. [2021-02-21 16:09:58,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 04:09:58 BoogieIcfgContainer [2021-02-21 16:09:58,864 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 16:09:58,866 INFO L168 Benchmark]: Toolchain (without parser) took 1268.21 ms. Allocated memory is still 163.6 MB. Free memory was 139.5 MB in the beginning and 87.4 MB in the end (delta: 52.2 MB). Peak memory consumption was 52.4 MB. Max. memory is 8.0 GB. [2021-02-21 16:09:58,867 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 163.6 MB. Free memory is still 138.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 16:09:58,868 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.87 ms. Allocated memory is still 163.6 MB. Free memory was 138.4 MB in the beginning and 129.6 MB in the end (delta: 8.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 16:09:58,873 INFO L168 Benchmark]: Boogie Preprocessor took 30.55 ms. Allocated memory is still 163.6 MB. Free memory was 129.6 MB in the beginning and 128.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 16:09:58,874 INFO L168 Benchmark]: RCFGBuilder took 331.20 ms. Allocated memory is still 163.6 MB. Free memory was 128.3 MB in the beginning and 117.0 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-21 16:09:58,875 INFO L168 Benchmark]: TraceAbstraction took 575.40 ms. Allocated memory is still 163.6 MB. Free memory was 116.5 MB in the beginning and 87.4 MB in the end (delta: 29.1 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 GB. [2021-02-21 16:09:58,880 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 163.6 MB. Free memory is still 138.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 307.87 ms. Allocated memory is still 163.6 MB. Free memory was 138.4 MB in the beginning and 129.6 MB in the end (delta: 8.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.55 ms. Allocated memory is still 163.6 MB. Free memory was 129.6 MB in the beginning and 128.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 331.20 ms. Allocated memory is still 163.6 MB. Free memory was 128.3 MB in the beginning and 117.0 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 575.40 ms. Allocated memory is still 163.6 MB. Free memory was 116.5 MB in the beginning and 87.4 MB in the end (delta: 29.1 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9 SDtfs, 3 SDslu, 3 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 4 NumberOfFragments, 34 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 30 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 216 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...