/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/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/nested_structure_noptr-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:55:59,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:55:59,355 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:55:59,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 01:55:59,497 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:55:59,524 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:55:59,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:55:59,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:55:59,529 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:55:59,530 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:55:59,530 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:55:59,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:55:59,530 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:55:59,531 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:55:59,531 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:55:59,532 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:55:59,532 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:55:59,533 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:55:59,533 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:55:59,533 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:55:59,534 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:55:59,534 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:55:59,534 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:55:59,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:55:59,534 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:55:59,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:55:59,535 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:55:59,535 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:55:59,535 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:55:59,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:56:00,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:56:00,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:56:00,005 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:56:00,008 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:56:00,010 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/nested_structure_noptr-1.i [2021-02-22 01:56:00,090 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0c0a1f95/58ab111695274dd79882990e6aafe93f/FLAG95cbbac57 [2021-02-22 01:56:00,765 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:56:00,766 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/nested_structure_noptr-1.i [2021-02-22 01:56:00,775 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0c0a1f95/58ab111695274dd79882990e6aafe93f/FLAG95cbbac57 [2021-02-22 01:56:01,140 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0c0a1f95/58ab111695274dd79882990e6aafe93f [2021-02-22 01:56:01,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:56:01,159 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:56:01,162 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:56:01,162 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:56:01,167 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:56:01,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:56:01" (1/1) ... [2021-02-22 01:56:01,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cced491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:01, skipping insertion in model container [2021-02-22 01:56:01,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:56:01" (1/1) ... [2021-02-22 01:56:01,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:56:01,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:56:01,458 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/nested_structure_noptr-1.i[824,837] [2021-02-22 01:56:01,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:56:01,487 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:56:01,505 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/nested_structure_noptr-1.i[824,837] [2021-02-22 01:56:01,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:56:01,541 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:56:01,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:01 WrapperNode [2021-02-22 01:56:01,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:56:01,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:56:01,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:56:01,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:56:01,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:01" (1/1) ... [2021-02-22 01:56:01,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:01" (1/1) ... [2021-02-22 01:56:01,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:01" (1/1) ... [2021-02-22 01:56:01,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:01" (1/1) ... [2021-02-22 01:56:01,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:01" (1/1) ... [2021-02-22 01:56:01,587 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:01" (1/1) ... [2021-02-22 01:56:01,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:01" (1/1) ... [2021-02-22 01:56:01,600 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:56:01,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:56:01,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:56:01,602 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:56:01,603 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:01" (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 [2021-02-22 01:56:01,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:56:01,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:56:01,730 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:56:01,730 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-22 01:56:01,730 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:56:01,730 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:56:01,731 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:56:01,731 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-22 01:56:01,731 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-22 01:56:01,732 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:56:01,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:56:01,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-22 01:56:01,732 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:56:01,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:56:01,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:56:01,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:56:01,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:56:01,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:56:01,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:56:01,983 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:56:01,984 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-22 01:56:01,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:56:01 BoogieIcfgContainer [2021-02-22 01:56:01,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:56:01,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:56:01,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:56:01,992 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:56:01,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:56:01" (1/3) ... [2021-02-22 01:56:01,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75f1a826 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:56:01, skipping insertion in model container [2021-02-22 01:56:01,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:01" (2/3) ... [2021-02-22 01:56:01,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75f1a826 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:56:01, skipping insertion in model container [2021-02-22 01:56:01,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:56:01" (3/3) ... [2021-02-22 01:56:01,996 INFO L111 eAbstractionObserver]: Analyzing ICFG nested_structure_noptr-1.i [2021-02-22 01:56:02,003 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:56:02,008 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:56:02,030 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:56:02,056 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:56:02,056 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:56:02,056 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:56:02,057 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:56:02,057 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:56:02,057 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:56:02,057 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:56:02,057 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:56:02,075 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2021-02-22 01:56:02,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-02-22 01:56:02,084 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:56:02,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:56:02,085 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:56:02,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:56:02,093 INFO L82 PathProgramCache]: Analyzing trace with hash 2121666475, now seen corresponding path program 1 times [2021-02-22 01:56:02,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:56:02,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920183093] [2021-02-22 01:56:02,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:56:02,212 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:56:02,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:02,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:02,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:02,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:02,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-22 01:56:02,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:02,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:02,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:02,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:56:02,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:02,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:56:02,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:02,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:02,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:56:02,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:02,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:02,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:02,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:56:02,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920183093] [2021-02-22 01:56:02,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:56:02,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-22 01:56:02,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828392857] [2021-02-22 01:56:02,688 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-22 01:56:02,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:56:02,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-22 01:56:02,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-22 01:56:02,706 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 7 states. [2021-02-22 01:56:02,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:56:02,944 INFO L93 Difference]: Finished difference Result 43 states and 42 transitions. [2021-02-22 01:56:02,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-22 01:56:02,948 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2021-02-22 01:56:02,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:56:02,956 INFO L225 Difference]: With dead ends: 43 [2021-02-22 01:56:02,956 INFO L226 Difference]: Without dead ends: 0 [2021-02-22 01:56:02,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-02-22 01:56:02,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-22 01:56:02,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-22 01:56:02,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-22 01:56:02,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-22 01:56:02,991 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-02-22 01:56:02,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:56:02,993 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-22 01:56:02,993 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-22 01:56:02,993 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-22 01:56:02,993 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-22 01:56:02,993 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:56:02,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-22 01:56:03,294 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-22 01:56:03,294 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-22 01:56:03,294 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-22 01:56:03,294 INFO L189 CegarLoopUtils]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-02-22 01:56:03,294 INFO L189 CegarLoopUtils]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-02-22 01:56:03,295 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-22 01:56:03,295 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-22 01:56:03,296 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2021-02-22 01:56:03,296 INFO L192 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: true [2021-02-22 01:56:03,296 INFO L192 CegarLoopUtils]: At program point L12-1(line 12) the Hoare annotation is: true [2021-02-22 01:56:03,296 INFO L192 CegarLoopUtils]: At program point L12-2(line 12) the Hoare annotation is: true [2021-02-22 01:56:03,297 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2021-02-22 01:56:03,297 INFO L192 CegarLoopUtils]: At program point L12-3(line 12) the Hoare annotation is: true [2021-02-22 01:56:03,298 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-22 01:56:03,298 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-22 01:56:03,299 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-22 01:56:03,299 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-22 01:56:03,299 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-22 01:56:03,300 INFO L185 CegarLoopUtils]: At program point mainENTRY(lines 38 44) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2021-02-22 01:56:03,300 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 38 44) the Hoare annotation is: true [2021-02-22 01:56:03,300 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 38 44) the Hoare annotation is: true [2021-02-22 01:56:03,301 INFO L185 CegarLoopUtils]: At program point L43(line 43) the Hoare annotation is: (= (select (select |#memory_int| |main_~#good~0.base|) (+ |main_~#good~0.offset| 8)) 4) [2021-02-22 01:56:03,301 INFO L185 CegarLoopUtils]: At program point L42(line 42) the Hoare annotation is: (and (= |main_#t~mem3| 4) (= (select (select |#memory_int| |main_~#good~0.base|) (+ |main_~#good~0.offset| 8)) 4)) [2021-02-22 01:56:03,302 INFO L185 CegarLoopUtils]: At program point L41(line 41) the Hoare annotation is: (= (select (select |#memory_int| |main_~#good~0.base|) (+ |main_~#good~0.offset| 8)) 4) [2021-02-22 01:56:03,302 INFO L185 CegarLoopUtils]: At program point L42-1(line 42) the Hoare annotation is: (and (= |main_#t~mem3| 4) (= (select (select |#memory_int| |main_~#good~0.base|) (+ |main_~#good~0.offset| 8)) 4)) [2021-02-22 01:56:03,302 INFO L192 CegarLoopUtils]: At program point L40(line 40) the Hoare annotation is: true [2021-02-22 01:56:03,302 INFO L192 CegarLoopUtils]: At program point L40-1(line 40) the Hoare annotation is: true [2021-02-22 01:56:03,303 INFO L192 CegarLoopUtils]: At program point L40-2(line 40) the Hoare annotation is: true [2021-02-22 01:56:03,304 INFO L192 CegarLoopUtils]: At program point L40-3(line 40) the Hoare annotation is: true [2021-02-22 01:56:03,304 INFO L185 CegarLoopUtils]: At program point L40-4(line 40) the Hoare annotation is: (= (select (select |#memory_int| |main_~#good~0.base|) (+ |main_~#good~0.offset| 8)) 4) [2021-02-22 01:56:03,305 INFO L185 CegarLoopUtils]: At program point L40-5(line 40) the Hoare annotation is: (= (select (select |#memory_int| |main_~#good~0.base|) (+ |main_~#good~0.offset| 8)) 4) [2021-02-22 01:56:03,306 INFO L185 CegarLoopUtils]: At program point L15(line 15) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-22 01:56:03,306 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 13 18) the Hoare annotation is: true [2021-02-22 01:56:03,306 INFO L185 CegarLoopUtils]: At program point L14(lines 14 16) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-22 01:56:03,306 INFO L185 CegarLoopUtils]: At program point L15-1(line 15) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-22 01:56:03,307 INFO L185 CegarLoopUtils]: At program point L14-2(lines 13 18) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-22 01:56:03,307 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 13 18) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-22 01:56:03,308 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-22 01:56:03,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:56:03 BoogieIcfgContainer [2021-02-22 01:56:03,327 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:56:03,333 INFO L168 Benchmark]: Toolchain (without parser) took 2184.46 ms. Allocated memory is still 159.4 MB. Free memory was 124.6 MB in the beginning and 73.0 MB in the end (delta: 51.6 MB). Peak memory consumption was 51.5 MB. Max. memory is 8.0 GB. [2021-02-22 01:56:03,337 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 159.4 MB. Free memory is still 141.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:56:03,342 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.54 ms. Allocated memory is still 159.4 MB. Free memory was 123.6 MB in the beginning and 114.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-22 01:56:03,346 INFO L168 Benchmark]: Boogie Preprocessor took 57.63 ms. Allocated memory is still 159.4 MB. Free memory was 114.0 MB in the beginning and 112.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:56:03,378 INFO L168 Benchmark]: RCFGBuilder took 384.56 ms. Allocated memory is still 159.4 MB. Free memory was 112.6 MB in the beginning and 130.7 MB in the end (delta: -18.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. [2021-02-22 01:56:03,381 INFO L168 Benchmark]: TraceAbstraction took 1340.36 ms. Allocated memory is still 159.4 MB. Free memory was 130.2 MB in the beginning and 73.0 MB in the end (delta: 57.2 MB). Peak memory consumption was 55.6 MB. Max. memory is 8.0 GB. [2021-02-22 01:56:03,396 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 159.4 MB. Free memory is still 141.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 380.54 ms. Allocated memory is still 159.4 MB. Free memory was 123.6 MB in the beginning and 114.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 57.63 ms. Allocated memory is still 159.4 MB. Free memory was 114.0 MB in the beginning and 112.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 384.56 ms. Allocated memory is still 159.4 MB. Free memory was 112.6 MB in the beginning and 130.7 MB in the end (delta: -18.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1340.36 ms. Allocated memory is still 159.4 MB. Free memory was 130.2 MB in the beginning and 73.0 MB in the end (delta: 57.2 MB). Peak memory consumption was 55.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: 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 - ProcedureContractResult [Line: 38]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 13]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 12 SDslu, 81 SDs, 0 SdLazy, 49 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 33 LocationsWithAnnotation, 33 PreInvPairs, 43 NumberOfFragments, 146 HoareAnnotationTreeSize, 33 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 33 FomulaSimplificationsInter, 137 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...