/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/test18.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:37:43,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:37:43,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:37:43,440 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 13:37:43,456 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:37:43,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:37:43,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:37:43,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:37:43,462 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:37:43,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:37:43,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:37:43,469 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:37:43,471 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:37:43,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:37:43,475 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:37:43,476 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:37:43,480 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 13:37:43,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:37:43,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:37:43,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:37:43,520 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 [2021-02-23 13:37:43,547 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:37:43,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:37:43,549 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:37:43,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:37:43,550 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:37:43,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:37:43,550 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:37:43,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:37:43,551 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:37:43,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:37:43,551 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:37:43,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:37:43,552 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:37:43,552 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:37:43,552 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:37:43,552 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:37:43,553 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:37:43,553 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:37:43,553 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:37:43,553 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:37:43,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:37:43,554 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:37:43,554 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:37:43,555 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:37:43,555 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:37:43,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:37:43,555 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:37:43,556 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:37:43,556 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:37:43,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:37:43,960 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:37:43,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:37:43,965 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:37:43,966 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:37:43,967 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test18.c [2021-02-23 13:37:44,055 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7db3e8779/9dddb854aaf5486e884b438fb79ac364/FLAG848160e54 [2021-02-23 13:37:44,696 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:37:44,697 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test18.c [2021-02-23 13:37:44,705 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7db3e8779/9dddb854aaf5486e884b438fb79ac364/FLAG848160e54 [2021-02-23 13:37:45,083 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7db3e8779/9dddb854aaf5486e884b438fb79ac364 [2021-02-23 13:37:45,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:37:45,103 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:37:45,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:37:45,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:37:45,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:37:45,116 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:37:45" (1/1) ... [2021-02-23 13:37:45,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@442a2193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:45, skipping insertion in model container [2021-02-23 13:37:45,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:37:45" (1/1) ... [2021-02-23 13:37:45,128 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:37:45,146 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:37:45,388 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/test18.c[524,537] [2021-02-23 13:37:45,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:37:45,406 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:37:45,424 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/test18.c[524,537] [2021-02-23 13:37:45,425 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:37:45,449 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:37:45,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:45 WrapperNode [2021-02-23 13:37:45,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:37:45,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:37:45,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:37:45,450 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:37:45,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:45" (1/1) ... [2021-02-23 13:37:45,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:45" (1/1) ... [2021-02-23 13:37:45,471 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:45" (1/1) ... [2021-02-23 13:37:45,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:45" (1/1) ... [2021-02-23 13:37:45,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:45" (1/1) ... [2021-02-23 13:37:45,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:45" (1/1) ... [2021-02-23 13:37:45,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:45" (1/1) ... [2021-02-23 13:37:45,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:37:45,486 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:37:45,486 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:37:45,486 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:37:45,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:45" (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 [2021-02-23 13:37:45,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:37:45,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:37:45,577 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:37:45,577 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-02-23 13:37:45,577 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-02-23 13:37:45,578 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:37:45,578 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:37:45,578 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:37:45,578 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:37:45,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:37:45,578 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-02-23 13:37:45,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 13:37:45,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 13:37:45,579 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-02-23 13:37:45,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:37:45,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:37:45,580 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:37:45,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:37:45,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:37:45,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:37:45,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:37:45,962 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:37:45,962 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 13:37:45,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:37:45 BoogieIcfgContainer [2021-02-23 13:37:45,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:37:45,970 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:37:45,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:37:45,974 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:37:45,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:37:45" (1/3) ... [2021-02-23 13:37:45,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb9fe9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:37:45, skipping insertion in model container [2021-02-23 13:37:45,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:45" (2/3) ... [2021-02-23 13:37:45,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb9fe9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:37:45, skipping insertion in model container [2021-02-23 13:37:45,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:37:45" (3/3) ... [2021-02-23 13:37:45,978 INFO L111 eAbstractionObserver]: Analyzing ICFG test18.c [2021-02-23 13:37:45,987 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:37:45,991 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:37:46,012 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:37:46,053 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:37:46,053 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:37:46,053 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:37:46,053 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:37:46,054 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:37:46,054 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:37:46,054 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:37:46,054 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:37:46,079 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2021-02-23 13:37:46,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-02-23 13:37:46,085 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:37:46,087 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:37:46,087 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:37:46,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:37:46,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1588361574, now seen corresponding path program 1 times [2021-02-23 13:37:46,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:37:46,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468726762] [2021-02-23 13:37:46,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:37:46,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:37:46,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:46,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:37:46,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:46,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:37:46,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:46,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:37:46,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:46,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:37:46,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:37:46,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:37:46,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:46,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:37:46,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 13:37:46,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:37:46,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:46,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 13:37:46,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:46,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 13:37:46,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:46,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:37:46,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 13:37:46,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:37:46,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:46,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-23 13:37:46,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:37:46,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468726762] [2021-02-23 13:37:46,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:37:46,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-23 13:37:46,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103318747] [2021-02-23 13:37:46,823 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 13:37:46,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:37:46,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 13:37:46,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-02-23 13:37:46,839 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 11 states. [2021-02-23 13:37:47,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:37:47,126 INFO L93 Difference]: Finished difference Result 27 states and 26 transitions. [2021-02-23 13:37:47,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 13:37:47,128 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2021-02-23 13:37:47,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:37:47,134 INFO L225 Difference]: With dead ends: 27 [2021-02-23 13:37:47,134 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 13:37:47,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-02-23 13:37:47,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 13:37:47,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 13:37:47,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 13:37:47,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 13:37:47,163 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-02-23 13:37:47,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:37:47,163 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 13:37:47,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 13:37:47,164 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 13:37:47,164 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 13:37:47,164 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:37:47,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 13:37:47,328 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-23 13:37:47,328 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-23 13:37:47,329 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-23 13:37:47,329 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-02-23 13:37:47,329 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |#t~string5.base| |old(#t~string5.base)|) (= |old(#t~string6.offset)| |#t~string6.offset|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |old(#t~string4.offset)| |#t~string4.offset|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-23 13:37:47,329 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-02-23 13:37:47,330 INFO L185 CegarLoopUtils]: At program point L11(line 11) the Hoare annotation is: (and (= (select (select |#memory_$Pointer$.offset| |f_~#pb.base|) |f_~#pb.offset|) |f_#in~pb.offset|) (= (select (select |#memory_$Pointer$.base| |f_~#pb.base|) |f_~#pb.offset|) |f_#in~pb.base|)) [2021-02-23 13:37:47,330 INFO L189 CegarLoopUtils]: For program point L11-1(line 11) no Hoare annotation was computed. [2021-02-23 13:37:47,330 INFO L189 CegarLoopUtils]: For program point fEXIT(lines 10 13) no Hoare annotation was computed. [2021-02-23 13:37:47,330 INFO L185 CegarLoopUtils]: At program point fENTRY(lines 10 13) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) [2021-02-23 13:37:47,330 INFO L189 CegarLoopUtils]: For program point fFINAL(lines 10 13) no Hoare annotation was computed. [2021-02-23 13:37:47,330 INFO L189 CegarLoopUtils]: For program point gEXIT(lines 6 8) no Hoare annotation was computed. [2021-02-23 13:37:47,331 INFO L189 CegarLoopUtils]: For program point gFINAL(lines 6 8) no Hoare annotation was computed. [2021-02-23 13:37:47,331 INFO L185 CegarLoopUtils]: At program point gENTRY(lines 6 8) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) [2021-02-23 13:37:47,331 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-02-23 13:37:47,331 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 13:37:47,331 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 13:37:47,331 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-02-23 13:37:47,331 INFO L185 CegarLoopUtils]: At program point L17(line 17) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) [2021-02-23 13:37:47,332 INFO L189 CegarLoopUtils]: For program point L17-1(line 17) no Hoare annotation was computed. [2021-02-23 13:37:47,332 INFO L189 CegarLoopUtils]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 24) no Hoare annotation was computed. [2021-02-23 13:37:47,332 INFO L185 CegarLoopUtils]: At program point mainENTRY(lines 15 26) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) [2021-02-23 13:37:47,332 INFO L189 CegarLoopUtils]: For program point mainFINAL(lines 15 26) no Hoare annotation was computed. [2021-02-23 13:37:47,332 INFO L189 CegarLoopUtils]: For program point mainEXIT(lines 15 26) no Hoare annotation was computed. [2021-02-23 13:37:47,333 INFO L185 CegarLoopUtils]: At program point L19(lines 15 26) the Hoare annotation is: false [2021-02-23 13:37:47,333 INFO L189 CegarLoopUtils]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-02-23 13:37:47,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:37:47 BoogieIcfgContainer [2021-02-23 13:37:47,343 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:37:47,345 INFO L168 Benchmark]: Toolchain (without parser) took 2253.80 ms. Allocated memory is still 161.5 MB. Free memory was 137.1 MB in the beginning and 84.4 MB in the end (delta: 52.7 MB). Peak memory consumption was 54.2 MB. Max. memory is 8.0 GB. [2021-02-23 13:37:47,346 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 161.5 MB. Free memory is still 136.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:37:47,347 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.53 ms. Allocated memory is still 161.5 MB. Free memory was 136.0 MB in the beginning and 126.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 13:37:47,348 INFO L168 Benchmark]: Boogie Preprocessor took 34.98 ms. Allocated memory is still 161.5 MB. Free memory was 126.9 MB in the beginning and 125.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 13:37:47,349 INFO L168 Benchmark]: RCFGBuilder took 478.18 ms. Allocated memory is still 161.5 MB. Free memory was 125.3 MB in the beginning and 109.1 MB in the end (delta: 16.2 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-02-23 13:37:47,349 INFO L168 Benchmark]: TraceAbstraction took 1373.41 ms. Allocated memory is still 161.5 MB. Free memory was 108.8 MB in the beginning and 84.4 MB in the end (delta: 24.4 MB). Peak memory consumption was 25.9 MB. Max. memory is 8.0 GB. [2021-02-23 13:37:47,353 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 161.5 MB. Free memory is still 136.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 341.53 ms. Allocated memory is still 161.5 MB. Free memory was 136.0 MB in the beginning and 126.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.98 ms. Allocated memory is still 161.5 MB. Free memory was 126.9 MB in the beginning and 125.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 478.18 ms. Allocated memory is still 161.5 MB. Free memory was 125.3 MB in the beginning and 109.1 MB in the end (delta: 16.2 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1373.41 ms. Allocated memory is still 161.5 MB. Free memory was 108.8 MB in the beginning and 84.4 MB in the end (delta: 24.4 MB). Peak memory consumption was 25.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 24]: 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 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 3 SDslu, 45 SDs, 0 SdLazy, 105 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 9 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 101 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 87 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 2771 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...