/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/test_union.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:27:10,114 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:27:10,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:27:10,170 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:27:10,171 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:27:10,175 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:27:10,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:27:10,185 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:27:10,188 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:27:10,194 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:27:10,195 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:27:10,197 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 18:27:10,197 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 18:27:10,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 18:27:10,202 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 18:27:10,203 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 18:27:10,204 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 18:27:10,208 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 18:27:10,214 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 18:27:10,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 18:27:10,224 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 18:27:10,225 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 18:27:10,228 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 18:27:10,232 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 18:27:10,234 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 18:27:10,235 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 18:27:10,237 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 18:27:10,239 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 18:27:10,240 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 18:27:10,254 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 18:27:10,255 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 18:27:10,256 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 18:27:10,256 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 18:27:10,257 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 18:27:10,258 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 18:27:10,259 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 18:27:10,259 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 18:27:10,260 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 18:27:10,260 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:27:10,261 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:27:10,262 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:27:10,263 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 [2020-10-23 18:27:10,289 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:27:10,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:27:10,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:27:10,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:27:10,291 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:27:10,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:27:10,292 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:27:10,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:27:10,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:27:10,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:27:10,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:27:10,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:27:10,293 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:27:10,293 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:27:10,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:27:10,294 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:27:10,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:27:10,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:27:10,294 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:27:10,295 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:27:10,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:27:10,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:27:10,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:27:10,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:27:10,296 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:27:10,296 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:27:10,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:27:10,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:27:10,297 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:27:10,297 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:27:10,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:27:10,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:27:10,744 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:27:10,746 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:27:10,746 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:27:10,747 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_union.c_1.i [2020-10-23 18:27:10,841 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5713513b/0d4654a4faa44f1fa27d79b6a1d24406/FLAG97d2be1be [2020-10-23 18:27:11,480 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:27:11,481 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test_union.c_1.i [2020-10-23 18:27:11,489 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5713513b/0d4654a4faa44f1fa27d79b6a1d24406/FLAG97d2be1be [2020-10-23 18:27:11,853 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5713513b/0d4654a4faa44f1fa27d79b6a1d24406 [2020-10-23 18:27:11,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:27:11,867 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:27:11,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:27:11,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:27:11,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:27:11,877 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:27:11" (1/1) ... [2020-10-23 18:27:11,881 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@578c52ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:27:11, skipping insertion in model container [2020-10-23 18:27:11,881 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:27:11" (1/1) ... [2020-10-23 18:27:11,890 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:27:11,906 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:27:12,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:27:12,061 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:27:12,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:27:12,095 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:27:12,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:27:12 WrapperNode [2020-10-23 18:27:12,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:27:12,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:27:12,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:27:12,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:27:12,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:27:12" (1/1) ... [2020-10-23 18:27:12,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:27:12" (1/1) ... [2020-10-23 18:27:12,117 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:27:12" (1/1) ... [2020-10-23 18:27:12,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:27:12" (1/1) ... [2020-10-23 18:27:12,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:27:12" (1/1) ... [2020-10-23 18:27:12,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:27:12" (1/1) ... [2020-10-23 18:27:12,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:27:12" (1/1) ... [2020-10-23 18:27:12,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:27:12,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:27:12,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:27:12,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:27:12,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:27:12" (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 [2020-10-23 18:27:12,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:27:12,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:27:12,198 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:27:12,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-10-23 18:27:12,198 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:27:12,198 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:27:12,198 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:27:12,199 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:27:12,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:27:12,199 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-10-23 18:27:12,199 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:27:12,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:27:12,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:27:12,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:27:12,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:27:12,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:27:12,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:27:12,413 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:27:12,414 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-23 18:27:12,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:27:12 BoogieIcfgContainer [2020-10-23 18:27:12,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:27:12,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:27:12,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:27:12,421 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:27:12,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:27:11" (1/3) ... [2020-10-23 18:27:12,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41db6921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:27:12, skipping insertion in model container [2020-10-23 18:27:12,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:27:12" (2/3) ... [2020-10-23 18:27:12,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41db6921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:27:12, skipping insertion in model container [2020-10-23 18:27:12,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:27:12" (3/3) ... [2020-10-23 18:27:12,425 INFO L111 eAbstractionObserver]: Analyzing ICFG test_union.c_1.i [2020-10-23 18:27:12,439 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:27:12,444 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:27:12,460 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:27:12,490 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:27:12,491 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:27:12,491 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:27:12,491 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:27:12,491 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:27:12,491 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:27:12,492 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:27:12,492 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:27:12,539 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-10-23 18:27:12,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-23 18:27:12,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:27:12,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:27:12,548 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:27:12,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:27:12,557 INFO L82 PathProgramCache]: Analyzing trace with hash 78725897, now seen corresponding path program 1 times [2020-10-23 18:27:12,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:27:12,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385898394] [2020-10-23 18:27:12,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:27:12,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:27:12,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:27:12,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:27:12,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:27:12,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385898394] [2020-10-23 18:27:12,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:27:12,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 18:27:12,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394960190] [2020-10-23 18:27:12,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 18:27:12,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:27:12,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 18:27:12,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 18:27:12,926 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 4 states. [2020-10-23 18:27:12,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:27:12,979 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2020-10-23 18:27:12,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 18:27:12,981 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-23 18:27:12,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:27:12,987 INFO L225 Difference]: With dead ends: 26 [2020-10-23 18:27:12,987 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 18:27:12,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 18:27:13,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 18:27:13,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 18:27:13,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 18:27:13,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 18:27:13,019 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-10-23 18:27:13,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:27:13,019 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 18:27:13,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 18:27:13,019 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 18:27:13,020 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 18:27:13,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:27:13,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 18:27:13,149 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-23 18:27:13,149 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-23 18:27:13,149 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-23 18:27:13,149 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-23 18:27:13,150 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:27:13,150 INFO L270 CegarLoopResult]: 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|)) [2020-10-23 18:27:13,150 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:27:13,150 INFO L274 CegarLoopResult]: For program point __blast_assertEXIT(lines 6 9) no Hoare annotation was computed. [2020-10-23 18:27:13,150 INFO L274 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-10-23 18:27:13,150 INFO L274 CegarLoopResult]: For program point __blast_assertFINAL(lines 6 9) no Hoare annotation was computed. [2020-10-23 18:27:13,151 INFO L277 CegarLoopResult]: At program point __blast_assertENTRY(lines 6 9) the Hoare annotation is: true [2020-10-23 18:27:13,151 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:27:13,151 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 18:27:13,151 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 18:27:13,151 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:27:13,152 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 25 33) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-10-23 18:27:13,152 INFO L274 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-10-23 18:27:13,152 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 25 33) no Hoare annotation was computed. [2020-10-23 18:27:13,152 INFO L270 CegarLoopResult]: At program point L29-2(line 29) the Hoare annotation is: false [2020-10-23 18:27:13,152 INFO L274 CegarLoopResult]: For program point L29-3(line 29) no Hoare annotation was computed. [2020-10-23 18:27:13,152 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 25 33) no Hoare annotation was computed. [2020-10-23 18:27:13,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:27:13 BoogieIcfgContainer [2020-10-23 18:27:13,158 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:27:13,161 INFO L168 Benchmark]: Toolchain (without parser) took 1299.69 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 103.5 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.5 MB. Max. memory is 8.0 GB. [2020-10-23 18:27:13,162 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 125.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:27:13,163 INFO L168 Benchmark]: CACSL2BoogieTranslator took 225.05 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 116.8 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:27:13,164 INFO L168 Benchmark]: Boogie Preprocessor took 32.18 ms. Allocated memory is still 151.0 MB. Free memory was 116.8 MB in the beginning and 115.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 18:27:13,165 INFO L168 Benchmark]: RCFGBuilder took 286.16 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 103.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-23 18:27:13,166 INFO L168 Benchmark]: TraceAbstraction took 740.45 ms. Allocated memory is still 151.0 MB. Free memory was 103.2 MB in the beginning and 103.5 MB in the end (delta: -304.7 kB). Peak memory consumption was 414.3 kB. Max. memory is 8.0 GB. [2020-10-23 18:27:13,170 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 125.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 225.05 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 116.8 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.18 ms. Allocated memory is still 151.0 MB. Free memory was 116.8 MB in the beginning and 115.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 286.16 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 103.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 740.45 ms. Allocated memory is still 151.0 MB. Free memory was 103.2 MB in the beginning and 103.5 MB in the end (delta: -304.7 kB). Peak memory consumption was 414.3 kB. 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8 SDtfs, 1 SDslu, 11 SDs, 0 SdLazy, 10 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 43 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 369 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...