/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/structure_assignment.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:56:47,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:56:47,847 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:56:47,883 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 01:56:47,953 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:56:47,954 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:56:47,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:56:47,956 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 01:56:47,968 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:56:47,969 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:56:47,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:56:47,971 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:56:47,971 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:56:47,971 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:56:47,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:56:47,972 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:56:47,972 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:56:47,972 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:56:47,973 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:56:47,973 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:56:47,973 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:56:47,973 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:56:47,974 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:56:47,974 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:56:47,974 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:56:47,975 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:56:47,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:56:47,975 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:56:47,975 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:56:47,976 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:56:47,976 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:56:47,976 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:56:48,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:56:48,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:56:48,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:56:48,389 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:56:48,394 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:56:48,396 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/structure_assignment.i [2021-02-22 01:56:48,490 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3f5c003f/6ff0e59c86be48e2b60c5cd8a05911c3/FLAGed1d7b0ce [2021-02-22 01:56:49,129 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:56:49,129 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/structure_assignment.i [2021-02-22 01:56:49,137 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3f5c003f/6ff0e59c86be48e2b60c5cd8a05911c3/FLAGed1d7b0ce [2021-02-22 01:56:49,528 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3f5c003f/6ff0e59c86be48e2b60c5cd8a05911c3 [2021-02-22 01:56:49,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:56:49,547 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:56:49,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:56:49,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:56:49,558 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:56:49,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:56:49" (1/1) ... [2021-02-22 01:56:49,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cc0f26a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:49, skipping insertion in model container [2021-02-22 01:56:49,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:56:49" (1/1) ... [2021-02-22 01:56:49,572 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:56:49,591 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:56:49,798 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/structure_assignment.i[305,318] [2021-02-22 01:56:49,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:56:49,842 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:56:49,857 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/structure_assignment.i[305,318] [2021-02-22 01:56:49,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:56:49,881 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:56:49,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:49 WrapperNode [2021-02-22 01:56:49,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:56:49,883 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:56:49,884 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:56:49,884 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:56:49,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:49" (1/1) ... [2021-02-22 01:56:49,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:49" (1/1) ... [2021-02-22 01:56:49,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:49" (1/1) ... [2021-02-22 01:56:49,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:49" (1/1) ... [2021-02-22 01:56:49,916 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:49" (1/1) ... [2021-02-22 01:56:49,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:49" (1/1) ... [2021-02-22 01:56:49,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:49" (1/1) ... [2021-02-22 01:56:49,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:56:49,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:56:49,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:56:49,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:56:49,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:49" (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 01:56:50,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:56:50,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:56:50,036 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:56:50,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2021-02-22 01:56:50,036 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:56:50,036 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:56:50,037 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:56:50,037 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:56:50,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:56:50,037 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2021-02-22 01:56:50,037 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:56:50,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:56:50,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:56:50,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:56:50,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:56:50,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:56:50,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:56:50,463 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:56:50,463 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-22 01:56:50,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:56:50 BoogieIcfgContainer [2021-02-22 01:56:50,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:56:50,470 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:56:50,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:56:50,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:56:50,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:56:49" (1/3) ... [2021-02-22 01:56:50,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb8c26d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:56:50, skipping insertion in model container [2021-02-22 01:56:50,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:56:49" (2/3) ... [2021-02-22 01:56:50,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb8c26d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:56:50, skipping insertion in model container [2021-02-22 01:56:50,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:56:50" (3/3) ... [2021-02-22 01:56:50,478 INFO L111 eAbstractionObserver]: Analyzing ICFG structure_assignment.i [2021-02-22 01:56:50,486 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:56:50,491 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:56:50,513 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:56:50,539 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:56:50,539 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:56:50,540 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:56:50,540 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:56:50,540 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:56:50,540 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:56:50,540 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:56:50,540 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:56:50,558 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2021-02-22 01:56:50,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-22 01:56:50,568 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:56:50,569 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, 1, 1, 1, 1, 1] [2021-02-22 01:56:50,570 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:56:50,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:56:50,577 INFO L82 PathProgramCache]: Analyzing trace with hash -918415613, now seen corresponding path program 1 times [2021-02-22 01:56:50,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:56:50,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276081322] [2021-02-22 01:56:50,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:56:50,671 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:56:50,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:50,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:50,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:50,897 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:50,899 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-22 01:56:50,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:50,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:50,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:50,931 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-22 01:56:50,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:50,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:56:50,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:50,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:51,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:56:51,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:56:51,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:56:51,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:56:51,052 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 01:56:51,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276081322] [2021-02-22 01:56:51,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:56:51,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-22 01:56:51,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145669566] [2021-02-22 01:56:51,062 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-22 01:56:51,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:56:51,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-22 01:56:51,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-22 01:56:51,080 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 7 states. [2021-02-22 01:56:51,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:56:51,314 INFO L93 Difference]: Finished difference Result 50 states and 49 transitions. [2021-02-22 01:56:51,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-22 01:56:51,317 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2021-02-22 01:56:51,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:56:51,324 INFO L225 Difference]: With dead ends: 50 [2021-02-22 01:56:51,324 INFO L226 Difference]: Without dead ends: 0 [2021-02-22 01:56:51,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-02-22 01:56:51,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-22 01:56:51,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-22 01:56:51,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-22 01:56:51,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-22 01:56:51,356 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2021-02-22 01:56:51,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:56:51,357 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-22 01:56:51,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-22 01:56:51,357 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-22 01:56:51,357 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-22 01:56:51,358 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:56:51,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-22 01:56:51,648 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-22 01:56:51,649 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-22 01:56:51,649 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-22 01:56:51,649 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-22 01:56:51,649 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-22 01:56:51,650 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-22 01:56:51,650 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-22 01:56:51,650 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-22 01:56:51,650 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2021-02-22 01:56:51,650 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-22 01:56:51,651 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-22 01:56:51,651 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-22 01:56:51,651 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-22 01:56:51,651 INFO L192 CegarLoopUtils]: At program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) the Hoare annotation is: true [2021-02-22 01:56:51,651 INFO L192 CegarLoopUtils]: At program point L11(line 11) the Hoare annotation is: true [2021-02-22 01:56:51,652 INFO L192 CegarLoopUtils]: At program point __blast_assertEXIT(lines 9 12) the Hoare annotation is: true [2021-02-22 01:56:51,652 INFO L192 CegarLoopUtils]: At program point __blast_assertFINAL(lines 9 12) the Hoare annotation is: true [2021-02-22 01:56:51,652 INFO L192 CegarLoopUtils]: At program point __blast_assertENTRY(lines 9 12) the Hoare annotation is: true [2021-02-22 01:56:51,652 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-22 01:56:51,652 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-22 01:56:51,652 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-22 01:56:51,652 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-22 01:56:51,653 INFO L185 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: (= (select (select |#memory_int| |main_~#bad~0.base|) (+ |main_~#bad~0.offset| 4)) 2) [2021-02-22 01:56:51,653 INFO L185 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: (= (select (select |#memory_int| |main_~#good~0.base|) (+ |main_~#good~0.offset| 4)) 2) [2021-02-22 01:56:51,653 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 21 28) the Hoare annotation is: true [2021-02-22 01:56:51,653 INFO L185 CegarLoopUtils]: At program point L25-1(line 25) the Hoare annotation is: (and (= (select (select |#memory_int| |main_~#good~0.base|) (+ |main_~#good~0.offset| 4)) 2) (= 2 |main_#t~mem8|)) [2021-02-22 01:56:51,654 INFO L192 CegarLoopUtils]: At program point L23(line 23) the Hoare annotation is: true [2021-02-22 01:56:51,654 INFO L185 CegarLoopUtils]: At program point L25-2(line 25) the Hoare annotation is: (= 2 |main_#t~mem8|) [2021-02-22 01:56:51,654 INFO L192 CegarLoopUtils]: At program point L23-1(line 23) the Hoare annotation is: true [2021-02-22 01:56:51,654 INFO L185 CegarLoopUtils]: At program point L25-3(line 25) the Hoare annotation is: (and (= 2 |main_#t~mem8|) (= (select (select |#memory_int| |main_~#bad~0.base|) (+ |main_~#bad~0.offset| 4)) 2)) [2021-02-22 01:56:51,654 INFO L185 CegarLoopUtils]: At program point L23-2(line 23) the Hoare annotation is: (= (select (select |#memory_int| |main_~#good~0.base|) (+ |main_~#good~0.offset| 4)) 2) [2021-02-22 01:56:51,655 INFO L185 CegarLoopUtils]: At program point L25-4(line 25) the Hoare annotation is: (= (select (select |#memory_int| |main_~#bad~0.base|) (+ |main_~#bad~0.offset| 4)) 2) [2021-02-22 01:56:51,655 INFO L185 CegarLoopUtils]: At program point L23-3(line 23) the Hoare annotation is: (= (select (select |#memory_int| |main_~#bad~0.base|) (+ |main_~#bad~0.offset| 4)) 2) [2021-02-22 01:56:51,655 INFO L185 CegarLoopUtils]: At program point L23-4(line 23) the Hoare annotation is: (= (select (select |#memory_int| |main_~#bad~0.base|) (+ |main_~#bad~0.offset| 4)) 2) [2021-02-22 01:56:51,655 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 21 28) the Hoare annotation is: true [2021-02-22 01:56:51,655 INFO L185 CegarLoopUtils]: At program point mainENTRY(lines 21 28) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2021-02-22 01:56:51,656 INFO L185 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: (= (select (select |#memory_int| |main_~#bad~0.base|) (+ |main_~#bad~0.offset| 4)) 2) [2021-02-22 01:56:51,656 INFO L185 CegarLoopUtils]: At program point L26-1(line 26) the Hoare annotation is: (and (= 2 |main_#t~mem9|) (= (select (select |#memory_int| |main_~#bad~0.base|) (+ |main_~#bad~0.offset| 4)) 2)) [2021-02-22 01:56:51,656 INFO L185 CegarLoopUtils]: At program point L24(line 24) the Hoare annotation is: (= (select (select |#memory_int| |main_~#good~0.base|) (+ |main_~#good~0.offset| 4)) 2) [2021-02-22 01:56:51,656 INFO L185 CegarLoopUtils]: At program point L26-3(line 26) the Hoare annotation is: false [2021-02-22 01:56:51,656 INFO L185 CegarLoopUtils]: At program point L24-1(line 24) the Hoare annotation is: (= (select (select |#memory_int| |main_~#bad~0.base|) (+ |main_~#bad~0.offset| 4)) 2) [2021-02-22 01:56:51,657 INFO L185 CegarLoopUtils]: At program point L26-4(line 26) the Hoare annotation is: (and (= 2 |main_#t~mem9|) (= (select (select |#memory_int| |main_~#bad~0.base|) (+ |main_~#bad~0.offset| 4)) 2)) [2021-02-22 01:56:51,657 INFO L185 CegarLoopUtils]: At program point L24-2(line 24) the Hoare annotation is: (= (select (select |#memory_int| |main_~#bad~0.base|) (+ |main_~#bad~0.offset| 4)) 2) [2021-02-22 01:56:51,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:56:51 BoogieIcfgContainer [2021-02-22 01:56:51,669 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:56:51,671 INFO L168 Benchmark]: Toolchain (without parser) took 2135.54 ms. Allocated memory is still 151.0 MB. Free memory was 127.4 MB in the beginning and 128.2 MB in the end (delta: -777.1 kB). Peak memory consumption was 57.7 MB. Max. memory is 8.0 GB. [2021-02-22 01:56:51,672 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 125.2 MB in the end (delta: 115.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:56:51,673 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.40 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 117.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-22 01:56:51,674 INFO L168 Benchmark]: Boogie Preprocessor took 38.81 ms. Allocated memory is still 151.0 MB. Free memory was 117.1 MB in the beginning and 115.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-22 01:56:51,675 INFO L168 Benchmark]: RCFGBuilder took 542.16 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 133.0 MB in the end (delta: -17.4 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. [2021-02-22 01:56:51,676 INFO L168 Benchmark]: TraceAbstraction took 1199.27 ms. Allocated memory is still 151.0 MB. Free memory was 132.5 MB in the beginning and 128.2 MB in the end (delta: 4.3 MB). Peak memory consumption was 62.5 MB. Max. memory is 8.0 GB. [2021-02-22 01:56:51,680 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 125.2 MB in the end (delta: 115.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 329.40 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 117.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.81 ms. Allocated memory is still 151.0 MB. Free memory was 117.1 MB in the beginning and 115.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 542.16 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 133.0 MB in the end (delta: -17.4 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1199.27 ms. Allocated memory is still 151.0 MB. Free memory was 132.5 MB in the beginning and 128.2 MB in the end (delta: 4.3 MB). Peak memory consumption was 62.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 11]: 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: 9]: Procedure Contract for __blast_assert Derived contract for procedure __blast_assert: 1 - ProcedureContractResult [Line: 21]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.8s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 25 SDtfs, 10 SDslu, 84 SDs, 0 SdLazy, 68 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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, 40 LocationsWithAnnotation, 40 PreInvPairs, 50 NumberOfFragments, 206 HoareAnnotationTreeSize, 40 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 40 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.2s 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...