/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/test17.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:22:38,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:22:38,855 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:22:38,913 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 04:22:38,945 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:22:38,948 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:22:38,950 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:22:38,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:22:38,956 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:22:38,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:22:38,977 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:22:38,985 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:22:38,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:22:38,990 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:22:38,992 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:22:38,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:22:39,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 04:22:39,018 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:22:39,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:22:39,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:22:39,023 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 04:22:39,047 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:22:39,047 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:22:39,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:22:39,053 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:22:39,053 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:22:39,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:22:39,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:22:39,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:22:39,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:22:39,054 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:22:39,056 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:22:39,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:22:39,056 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:22:39,057 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:22:39,057 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:22:39,057 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:22:39,058 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:22:39,058 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:22:39,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:22:39,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:22:39,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:22:39,059 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:22:39,059 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:22:39,059 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:22:39,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:22:39,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:22:39,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:22:39,565 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:22:39,566 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:22:39,567 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test17.c [2021-02-24 04:22:39,650 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4052d188d/2f76a65359704aa8826364a52c97cb6b/FLAGc1431c3d8 [2021-02-24 04:22:40,431 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:22:40,432 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test17.c [2021-02-24 04:22:40,440 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4052d188d/2f76a65359704aa8826364a52c97cb6b/FLAGc1431c3d8 [2021-02-24 04:22:40,783 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4052d188d/2f76a65359704aa8826364a52c97cb6b [2021-02-24 04:22:40,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:22:40,800 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:22:40,804 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:22:40,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:22:40,809 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:22:40,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:22:40" (1/1) ... [2021-02-24 04:22:40,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31a8212a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:22:40, skipping insertion in model container [2021-02-24 04:22:40,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:22:40" (1/1) ... [2021-02-24 04:22:40,822 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:22:40,841 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:22:41,028 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/test17.c[377,390] [2021-02-24 04:22:41,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:22:41,047 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:22:41,060 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/test17.c[377,390] [2021-02-24 04:22:41,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:22:41,076 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:22:41,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:22:41 WrapperNode [2021-02-24 04:22:41,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:22:41,077 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:22:41,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:22:41,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:22:41,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:22:41" (1/1) ... [2021-02-24 04:22:41,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:22:41" (1/1) ... [2021-02-24 04:22:41,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:22:41" (1/1) ... [2021-02-24 04:22:41,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:22:41" (1/1) ... [2021-02-24 04:22:41,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:22:41" (1/1) ... [2021-02-24 04:22:41,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:22:41" (1/1) ... [2021-02-24 04:22:41,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:22:41" (1/1) ... [2021-02-24 04:22:41,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:22:41,109 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:22:41,109 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:22:41,109 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:22:41,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:22:41" (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 [2021-02-24 04:22:41,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:22:41,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:22:41,203 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:22:41,203 INFO L138 BoogieDeclarations]: Found implementation of procedure equal [2021-02-24 04:22:41,204 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:22:41,204 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:22:41,204 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:22:41,205 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:22:41,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:22:41,206 INFO L130 BoogieDeclarations]: Found specification of procedure equal [2021-02-24 04:22:41,206 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:22:41,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:22:41,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:22:41,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:22:41,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:22:41,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:22:41,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:22:41,480 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:22:41,480 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-24 04:22:41,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:22:41 BoogieIcfgContainer [2021-02-24 04:22:41,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:22:41,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:22:41,488 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:22:41,496 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:22:41,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:22:40" (1/3) ... [2021-02-24 04:22:41,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@83be4d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:22:41, skipping insertion in model container [2021-02-24 04:22:41,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:22:41" (2/3) ... [2021-02-24 04:22:41,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@83be4d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:22:41, skipping insertion in model container [2021-02-24 04:22:41,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:22:41" (3/3) ... [2021-02-24 04:22:41,506 INFO L111 eAbstractionObserver]: Analyzing ICFG test17.c [2021-02-24 04:22:41,523 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:22:41,539 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:22:41,593 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:22:41,664 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:22:41,664 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:22:41,664 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:22:41,665 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:22:41,665 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:22:41,669 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:22:41,669 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:22:41,670 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:22:41,720 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2021-02-24 04:22:41,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-02-24 04:22:41,759 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:22:41,760 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] [2021-02-24 04:22:41,761 INFO L428 AbstractCegarLoop]: === Iteration 1 === [equalErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:22:41,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:22:41,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1610863234, now seen corresponding path program 1 times [2021-02-24 04:22:41,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:22:41,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141732079] [2021-02-24 04:22:41,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:22:41,898 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:22:42,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:22:42,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:22:42,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:22:42,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:22:42,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:22:42,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:22:42,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:22:42,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:22:42,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:22:42,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:22:42,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:22:42,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:22:42,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:22:42,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:22:42,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:22:42,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:22:42,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141732079] [2021-02-24 04:22:42,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:22:42,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 04:22:42,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401993700] [2021-02-24 04:22:42,327 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 04:22:42,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:22:42,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 04:22:42,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-24 04:22:42,353 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 6 states. [2021-02-24 04:22:42,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:22:42,660 INFO L93 Difference]: Finished difference Result 36 states and 35 transitions. [2021-02-24 04:22:42,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 04:22:42,662 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2021-02-24 04:22:42,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:22:42,670 INFO L225 Difference]: With dead ends: 36 [2021-02-24 04:22:42,671 INFO L226 Difference]: Without dead ends: 0 [2021-02-24 04:22:42,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-02-24 04:22:42,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-24 04:22:42,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-24 04:22:42,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-24 04:22:42,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-24 04:22:42,710 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2021-02-24 04:22:42,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:22:42,710 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-24 04:22:42,711 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 04:22:42,711 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-24 04:22:42,711 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-24 04:22:42,711 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:22:42,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-24 04:22:43,162 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-24 04:22:43,162 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-24 04:22:43,163 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-24 04:22:43,163 INFO L185 CegarLoopUtils]: At program point equalEXIT(lines 6 14) the Hoare annotation is: (or (not (= |equal_#in~a.offset| |equal_#in~b.offset|)) (and (= equal_~a.base equal_~b.base) (= equal_~a.base |equal_#in~b.base|) (= equal_~b.offset equal_~a.offset) (= equal_~a.offset |equal_#in~b.offset|)) (not (= |equal_#in~a.base| |equal_#in~b.base|))) [2021-02-24 04:22:43,164 INFO L185 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: (or (not (= |equal_#in~a.offset| |equal_#in~b.offset|)) (not (= |equal_#in~a.base| |equal_#in~b.base|))) [2021-02-24 04:22:43,164 INFO L192 CegarLoopUtils]: At program point equalENTRY(lines 6 14) the Hoare annotation is: true [2021-02-24 04:22:43,164 INFO L185 CegarLoopUtils]: At program point equalFINAL(lines 6 14) the Hoare annotation is: (or (not (= |equal_#in~a.offset| |equal_#in~b.offset|)) (and (= equal_~a.base equal_~b.base) (= equal_~a.base |equal_#in~b.base|) (= equal_~b.offset equal_~a.offset) (= equal_~a.offset |equal_#in~b.offset|)) (not (= |equal_#in~a.base| |equal_#in~b.base|))) [2021-02-24 04:22:43,164 INFO L185 CegarLoopUtils]: At program point L8(lines 6 14) the Hoare annotation is: (or (not (= |equal_#in~a.offset| |equal_#in~b.offset|)) (not (= |equal_#in~a.base| |equal_#in~b.base|))) [2021-02-24 04:22:43,165 INFO L185 CegarLoopUtils]: At program point L7(lines 7 9) the Hoare annotation is: (or (not (= |equal_#in~a.offset| |equal_#in~b.offset|)) (and (= equal_~a.base equal_~b.base) (= equal_~a.base |equal_#in~b.base|) (= equal_~b.offset equal_~a.offset) (= equal_~a.offset |equal_#in~b.offset|)) (not (= |equal_#in~a.base| |equal_#in~b.base|))) [2021-02-24 04:22:43,165 INFO L185 CegarLoopUtils]: At program point L6(lines 6 14) the Hoare annotation is: (or (not (= |equal_#in~a.offset| |equal_#in~b.offset|)) (not (= |equal_#in~a.base| |equal_#in~b.base|)) (and (= equal_~a.base |equal_#in~b.base|) (= equal_~a.offset |equal_#in~b.offset|))) [2021-02-24 04:22:43,165 INFO L185 CegarLoopUtils]: At program point equalErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) the Hoare annotation is: (or (not (= |equal_#in~a.offset| |equal_#in~b.offset|)) (not (= |equal_#in~a.base| |equal_#in~b.base|))) [2021-02-24 04:22:43,166 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-24 04:22:43,166 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-24 04:22:43,166 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 04:22:43,166 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-24 04:22:43,166 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-24 04:22:43,167 INFO L192 CegarLoopUtils]: At program point L3-5(line 3) the Hoare annotation is: true [2021-02-24 04:22:43,167 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2021-02-24 04:22:43,167 INFO L192 CegarLoopUtils]: At program point L16(line 16) the Hoare annotation is: true [2021-02-24 04:22:43,167 INFO L192 CegarLoopUtils]: At program point L16-1(line 16) the Hoare annotation is: true [2021-02-24 04:22:43,168 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |~#a~0.base| |old(~#a~0.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= ~b~0 |old(~b~0)|)) [2021-02-24 04:22:43,168 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-24 04:22:43,168 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-24 04:22:43,168 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-24 04:22:43,168 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-24 04:22:43,169 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 04:22:43,169 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-24 04:22:43,169 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-24 04:22:43,169 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 18 21) the Hoare annotation is: true [2021-02-24 04:22:43,169 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 18 21) the Hoare annotation is: true [2021-02-24 04:22:43,169 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 18 21) the Hoare annotation is: true [2021-02-24 04:22:43,170 INFO L192 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: true [2021-02-24 04:22:43,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:22:43 BoogieIcfgContainer [2021-02-24 04:22:43,193 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 04:22:43,196 INFO L168 Benchmark]: Toolchain (without parser) took 2406.79 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 130.2 MB in the beginning and 110.4 MB in the end (delta: 19.7 MB). Peak memory consumption was 57.4 MB. Max. memory is 8.0 GB. [2021-02-24 04:22:43,196 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 154.1 MB. Free memory is still 128.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:22:43,198 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.56 ms. Allocated memory is still 154.1 MB. Free memory was 129.1 MB in the beginning and 119.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-24 04:22:43,199 INFO L168 Benchmark]: Boogie Preprocessor took 30.22 ms. Allocated memory is still 154.1 MB. Free memory was 119.9 MB in the beginning and 118.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 04:22:43,200 INFO L168 Benchmark]: RCFGBuilder took 374.32 ms. Allocated memory is still 154.1 MB. Free memory was 118.6 MB in the beginning and 105.2 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-24 04:22:43,201 INFO L168 Benchmark]: TraceAbstraction took 1705.52 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 104.8 MB in the beginning and 110.4 MB in the end (delta: -5.6 MB). Peak memory consumption was 32.3 MB. Max. memory is 8.0 GB. [2021-02-24 04:22:43,205 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 154.1 MB. Free memory is still 128.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 272.56 ms. Allocated memory is still 154.1 MB. Free memory was 129.1 MB in the beginning and 119.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.22 ms. Allocated memory is still 154.1 MB. Free memory was 119.9 MB in the beginning and 118.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 374.32 ms. Allocated memory is still 154.1 MB. Free memory was 118.6 MB in the beginning and 105.2 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1705.52 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 104.8 MB in the beginning and 110.4 MB in the end (delta: -5.6 MB). Peak memory consumption was 32.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 6]: Loop Invariant Derived loop invariant: !(a == b) || !(a == b) - ProcedureContractResult [Line: 6]: Procedure Contract for equal Derived contract for procedure equal: (!(a == b) || (((a == b && a == b) && b == a) && a == b)) || !(a == b) - ProcedureContractResult [Line: 18]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 15 SDslu, 56 SDs, 0 SdLazy, 26 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 29 LocationsWithAnnotation, 29 PreInvPairs, 36 NumberOfFragments, 170 HoareAnnotationTreeSize, 29 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 29 FomulaSimplificationsInter, 390 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...