/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/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-invgen/fragtest_simple.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:22:27,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:22:27,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:22:27,286 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 21:22:27,379 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:22:27,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:22:27,381 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:22:27,382 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 21:22:27,424 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:22:27,424 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:22:27,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:22:27,429 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:22:27,429 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:22:27,430 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:22:27,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:22:27,430 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:22:27,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:22:27,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:22:27,432 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:22:27,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:22:27,432 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:22:27,433 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:22:27,433 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:22:27,433 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:22:27,434 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:22:27,434 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:22:27,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:22:27,435 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:22:27,435 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:22:27,435 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:22:27,435 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:22:27,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:22:27,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:22:27,903 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:22:27,905 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:22:27,906 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:22:27,907 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2021-02-21 21:22:27,993 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63394d8b8/09b72112a2f7430bafedf37f14a005fb/FLAG0aa39ef7e [2021-02-21 21:22:28,554 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:22:28,555 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2021-02-21 21:22:28,569 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63394d8b8/09b72112a2f7430bafedf37f14a005fb/FLAG0aa39ef7e [2021-02-21 21:22:28,930 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63394d8b8/09b72112a2f7430bafedf37f14a005fb [2021-02-21 21:22:28,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:22:28,948 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:22:28,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:22:28,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:22:28,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:22:28,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:22:28" (1/1) ... [2021-02-21 21:22:28,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1008107d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:22:28, skipping insertion in model container [2021-02-21 21:22:28,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:22:28" (1/1) ... [2021-02-21 21:22:28,969 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:22:28,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:22:29,144 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/fragtest_simple.i[893,906] [2021-02-21 21:22:29,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:22:29,175 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:22:29,195 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/fragtest_simple.i[893,906] [2021-02-21 21:22:29,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:22:29,242 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:22:29,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:22:29 WrapperNode [2021-02-21 21:22:29,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:22:29,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:22:29,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:22:29,245 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:22:29,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:22:29" (1/1) ... [2021-02-21 21:22:29,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:22:29" (1/1) ... [2021-02-21 21:22:29,273 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:22:29" (1/1) ... [2021-02-21 21:22:29,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:22:29" (1/1) ... [2021-02-21 21:22:29,292 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:22:29" (1/1) ... [2021-02-21 21:22:29,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:22:29" (1/1) ... [2021-02-21 21:22:29,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:22:29" (1/1) ... [2021-02-21 21:22:29,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:22:29,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:22:29,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:22:29,313 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:22:29,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:22:29" (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 [2021-02-21 21:22:29,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:22:29,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:22:29,431 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:22:29,431 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 21:22:29,431 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 21:22:29,432 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:22:29,432 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:22:29,433 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:22:29,433 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-21 21:22:29,433 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-21 21:22:29,433 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:22:29,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:22:29,434 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 21:22:29,434 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 21:22:29,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 21:22:29,435 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:22:29,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:22:29,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:22:29,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:22:29,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:22:29,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:22:29,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:22:29,843 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:22:29,844 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-21 21:22:29,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:22:29 BoogieIcfgContainer [2021-02-21 21:22:29,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:22:29,847 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:22:29,848 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:22:29,851 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:22:29,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:22:28" (1/3) ... [2021-02-21 21:22:29,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f84a2e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:22:29, skipping insertion in model container [2021-02-21 21:22:29,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:22:29" (2/3) ... [2021-02-21 21:22:29,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f84a2e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:22:29, skipping insertion in model container [2021-02-21 21:22:29,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:22:29" (3/3) ... [2021-02-21 21:22:29,855 INFO L111 eAbstractionObserver]: Analyzing ICFG fragtest_simple.i [2021-02-21 21:22:29,863 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:22:29,867 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:22:29,888 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:22:29,954 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:22:29,954 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:22:29,954 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:22:29,955 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:22:29,955 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:22:29,955 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:22:29,955 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:22:29,955 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:22:29,989 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2021-02-21 21:22:30,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-21 21:22:30,009 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:22:30,011 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, 1, 1, 1, 1, 1] [2021-02-21 21:22:30,011 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:22:30,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:22:30,031 INFO L82 PathProgramCache]: Analyzing trace with hash 747916401, now seen corresponding path program 1 times [2021-02-21 21:22:30,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:22:30,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720785676] [2021-02-21 21:22:30,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:22:30,158 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:22:30,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:22:30,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:22:30,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:22:30,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:22:30,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:22:30,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:22:30,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:22:30,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:22:30,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:22:30,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:22:30,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720785676] [2021-02-21 21:22:30,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:22:30,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 21:22:30,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769903611] [2021-02-21 21:22:30,445 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 21:22:30,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:22:30,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 21:22:30,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:22:30,468 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 3 states. [2021-02-21 21:22:30,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:22:30,640 INFO L93 Difference]: Finished difference Result 84 states and 99 transitions. [2021-02-21 21:22:30,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 21:22:30,643 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2021-02-21 21:22:30,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:22:30,653 INFO L225 Difference]: With dead ends: 84 [2021-02-21 21:22:30,653 INFO L226 Difference]: Without dead ends: 49 [2021-02-21 21:22:30,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:22:30,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-02-21 21:22:30,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-02-21 21:22:30,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2021-02-21 21:22:30,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2021-02-21 21:22:30,755 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 31 [2021-02-21 21:22:30,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:22:30,756 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2021-02-21 21:22:30,756 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 21:22:30,756 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2021-02-21 21:22:30,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-21 21:22:30,760 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:22:30,760 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:22:30,760 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:22:30,760 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:22:30,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:22:30,762 INFO L82 PathProgramCache]: Analyzing trace with hash -862446061, now seen corresponding path program 1 times [2021-02-21 21:22:30,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:22:30,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551118917] [2021-02-21 21:22:30,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:22:30,773 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:22:30,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:22:30,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:22:30,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:22:30,921 WARN L141 QuantifierPusher]: treesize reduction 9, result has 25.0 percent of original size [2021-02-21 21:22:30,922 WARN L147 QuantifierPusher]: treesize reduction 9, result has 25.0 percent of original size 3 [2021-02-21 21:22:30,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:22:30,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:22:30,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:22:30,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:22:30,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:22:30,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:22:30,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:22:30,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:22:31,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:22:31,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:22:31,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:22:31,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551118917] [2021-02-21 21:22:31,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:22:31,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 21:22:31,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963013582] [2021-02-21 21:22:31,035 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 21:22:31,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:22:31,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 21:22:31,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:22:31,038 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 6 states. [2021-02-21 21:22:31,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:22:31,378 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2021-02-21 21:22:31,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-21 21:22:31,379 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2021-02-21 21:22:31,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:22:31,381 INFO L225 Difference]: With dead ends: 58 [2021-02-21 21:22:31,381 INFO L226 Difference]: Without dead ends: 56 [2021-02-21 21:22:31,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-21 21:22:31,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-02-21 21:22:31,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2021-02-21 21:22:31,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-02-21 21:22:31,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2021-02-21 21:22:31,398 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 35 [2021-02-21 21:22:31,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:22:31,399 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2021-02-21 21:22:31,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 21:22:31,399 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2021-02-21 21:22:31,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-21 21:22:31,401 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:22:31,401 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:22:31,401 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:22:31,402 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:22:31,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:22:31,402 INFO L82 PathProgramCache]: Analyzing trace with hash -16037188, now seen corresponding path program 1 times [2021-02-21 21:22:31,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:22:31,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357663438] [2021-02-21 21:22:31,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:22:33,589 WARN L141 QuantifierPusher]: treesize reduction 76, result has 61.6 percent of original size [2021-02-21 21:22:33,625 WARN L147 QuantifierPusher]: treesize reduction 76, result has 61.6 percent of original size 122 [2021-02-21 21:22:33,626 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-21 21:22:33,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:22:33,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:22:33,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:22:33,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:22:33,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:22:33,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:22:33,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:22:33,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:22:33,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 21:22:33,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:22:33,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 21:22:33,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:22:33,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:22:33,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:22:33,753 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:22:33,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:22:33,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:22:33,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:22:33,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:22:33,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:22:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:22:33,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:22:33,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:22:33,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:22:33,859 WARN L141 QuantifierPusher]: treesize reduction 89, result has 44.7 percent of original size [2021-02-21 21:22:33,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 21:22:33,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:22:33,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 21:22:33,876 WARN L147 QuantifierPusher]: treesize reduction 89, result has 44.7 percent of original size 72 [2021-02-21 21:22:33,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:22:33,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 21:22:33,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:22:33,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 21:22:33,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:22:33,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 21:22:33,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:22:33,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 21:22:33,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:22:33,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 21:22:33,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:22:34,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 21:22:34,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:22:34,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-21 21:22:34,012 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:22:34,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 21:22:34,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:22:34,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-21 21:22:34,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:22:34,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-21 21:22:34,033 WARN L141 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-02-21 21:22:34,034 WARN L147 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size 9 [2021-02-21 21:22:34,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:22:34,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:22:34,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357663438] [2021-02-21 21:22:34,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:22:34,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 21:22:34,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708900778] [2021-02-21 21:22:34,059 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 21:22:34,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:22:34,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 21:22:34,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-02-21 21:22:34,061 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 14 states. [2021-02-21 21:22:34,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:22:34,821 INFO L93 Difference]: Finished difference Result 82 states and 88 transitions. [2021-02-21 21:22:34,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 21:22:34,821 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 45 [2021-02-21 21:22:34,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:22:34,822 INFO L225 Difference]: With dead ends: 82 [2021-02-21 21:22:34,822 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 21:22:34,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=145, Invalid=557, Unknown=0, NotChecked=0, Total=702 [2021-02-21 21:22:34,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 21:22:34,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 21:22:34,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 21:22:34,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 21:22:34,824 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2021-02-21 21:22:34,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:22:34,825 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 21:22:34,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 21:22:34,825 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 21:22:34,825 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 21:22:34,825 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 21:22:34,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 21:22:35,792 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-21 21:22:35,793 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-21 21:22:35,793 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-21 21:22:35,793 INFO L189 CegarLoopUtils]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-02-21 21:22:35,793 INFO L189 CegarLoopUtils]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-02-21 21:22:35,793 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 21:22:35,793 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-21 21:22:35,794 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2021-02-21 21:22:35,794 INFO L192 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: true [2021-02-21 21:22:35,794 INFO L192 CegarLoopUtils]: At program point L12-1(line 12) the Hoare annotation is: true [2021-02-21 21:22:35,794 INFO L192 CegarLoopUtils]: At program point L12-2(line 12) the Hoare annotation is: true [2021-02-21 21:22:35,794 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)|)) [2021-02-21 21:22:35,794 INFO L192 CegarLoopUtils]: At program point L12-3(line 12) the Hoare annotation is: true [2021-02-21 21:22:35,795 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-21 21:22:35,795 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-21 21:22:35,795 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 21:22:35,795 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 21:22:35,795 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-21 21:22:35,795 INFO L189 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-02-21 21:22:35,795 INFO L189 CegarLoopUtils]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-02-21 21:22:35,795 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-02-21 21:22:35,796 INFO L189 CegarLoopUtils]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2021-02-21 21:22:35,796 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-02-21 21:22:35,796 INFO L185 CegarLoopUtils]: At program point L31-1(lines 31 33) the Hoare annotation is: (= main_~k~0 0) [2021-02-21 21:22:35,796 INFO L185 CegarLoopUtils]: At program point L31-2(line 31) the Hoare annotation is: (= main_~k~0 0) [2021-02-21 21:22:35,796 INFO L192 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: true [2021-02-21 21:22:35,796 INFO L185 CegarLoopUtils]: At program point L31-4(line 31) the Hoare annotation is: (= main_~k~0 0) [2021-02-21 21:22:35,796 INFO L185 CegarLoopUtils]: At program point L31-5(lines 31 33) the Hoare annotation is: (= main_~k~0 0) [2021-02-21 21:22:35,797 INFO L185 CegarLoopUtils]: At program point L31-6(lines 24 55) the Hoare annotation is: (= main_~k~0 0) [2021-02-21 21:22:35,797 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 24 55) the Hoare annotation is: true [2021-02-21 21:22:35,797 INFO L185 CegarLoopUtils]: At program point L48(line 48) the Hoare annotation is: (<= 0 (+ main_~k~0 1)) [2021-02-21 21:22:35,799 INFO L185 CegarLoopUtils]: At program point L44(line 44) the Hoare annotation is: (<= 0 main_~k~0) [2021-02-21 21:22:35,799 INFO L185 CegarLoopUtils]: At program point L40(line 40) the Hoare annotation is: (<= 0 main_~k~0) [2021-02-21 21:22:35,799 INFO L185 CegarLoopUtils]: At program point L32(line 32) the Hoare annotation is: (= main_~k~0 0) [2021-02-21 21:22:35,800 INFO L185 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: (= main_~k~0 0) [2021-02-21 21:22:35,800 INFO L185 CegarLoopUtils]: At program point L49(line 49) the Hoare annotation is: (<= 0 (+ main_~k~0 1)) [2021-02-21 21:22:35,800 INFO L185 CegarLoopUtils]: At program point L45-2(lines 45 53) the Hoare annotation is: (or (<= 0 main_~k~0) (and (<= 0 (+ main_~k~0 1)) (< main_~j~0 main_~n~0))) [2021-02-21 21:22:35,800 INFO L192 CegarLoopUtils]: At program point L45-3(lines 45 53) the Hoare annotation is: true [2021-02-21 21:22:35,800 INFO L185 CegarLoopUtils]: At program point L41(line 41) the Hoare annotation is: (<= 0 main_~k~0) [2021-02-21 21:22:35,800 INFO L185 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: (= main_~k~0 0) [2021-02-21 21:22:35,800 INFO L192 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: true [2021-02-21 21:22:35,801 INFO L185 CegarLoopUtils]: At program point L50(lines 50 52) the Hoare annotation is: (<= 0 (+ main_~k~0 1)) [2021-02-21 21:22:35,801 INFO L185 CegarLoopUtils]: At program point L46(line 46) the Hoare annotation is: (<= 0 main_~k~0) [2021-02-21 21:22:35,801 INFO L185 CegarLoopUtils]: At program point L46-1(line 46) the Hoare annotation is: (<= 0 main_~k~0) [2021-02-21 21:22:35,801 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 24 55) the Hoare annotation is: true [2021-02-21 21:22:35,801 INFO L185 CegarLoopUtils]: At program point L38-1(lines 38 42) the Hoare annotation is: (<= 0 main_~k~0) [2021-02-21 21:22:35,801 INFO L185 CegarLoopUtils]: At program point L38-2(line 38) the Hoare annotation is: (<= 0 main_~k~0) [2021-02-21 21:22:35,801 INFO L185 CegarLoopUtils]: At program point L38-4(line 38) the Hoare annotation is: (<= 0 main_~k~0) [2021-02-21 21:22:35,802 INFO L185 CegarLoopUtils]: At program point L34-1(lines 34 36) the Hoare annotation is: (= main_~k~0 0) [2021-02-21 21:22:35,802 INFO L185 CegarLoopUtils]: At program point L38-5(lines 38 42) the Hoare annotation is: (<= 0 main_~k~0) [2021-02-21 21:22:35,802 INFO L185 CegarLoopUtils]: At program point L38-6(lines 38 42) the Hoare annotation is: (<= 0 main_~k~0) [2021-02-21 21:22:35,807 INFO L185 CegarLoopUtils]: At program point L30(line 30) the Hoare annotation is: (and (= main_~k~0 0) (= main_~i~0 0)) [2021-02-21 21:22:35,807 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 24 55) the Hoare annotation is: true [2021-02-21 21:22:35,807 INFO L185 CegarLoopUtils]: At program point L30-1(line 30) the Hoare annotation is: (and (= main_~k~0 0) (= main_~i~0 0)) [2021-02-21 21:22:35,808 INFO L185 CegarLoopUtils]: At program point L30-2(line 30) the Hoare annotation is: (and (= main_~k~0 0) (= main_~i~0 0)) [2021-02-21 21:22:35,808 INFO L192 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: true [2021-02-21 21:22:35,808 INFO L185 CegarLoopUtils]: At program point L39(line 39) the Hoare annotation is: (<= 0 main_~k~0) [2021-02-21 21:22:35,808 INFO L185 CegarLoopUtils]: At program point L35(line 35) the Hoare annotation is: (= main_~k~0 0) [2021-02-21 21:22:35,808 INFO L185 CegarLoopUtils]: At program point L18-2(lines 17 22) the Hoare annotation is: (and (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) (or (not (= |__VERIFIER_assert_#in~cond| 1)) (not (= main_~n~0 0)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (= main_~j~0 0)))) [2021-02-21 21:22:35,808 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-02-21 21:22:35,808 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: (and (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) (or (not (= |__VERIFIER_assert_#in~cond| 1)) (not (= main_~n~0 0)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (= main_~j~0 0)))) [2021-02-21 21:22:35,809 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-21 21:22:35,809 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-21 21:22:35,809 INFO L185 CegarLoopUtils]: At program point L18(lines 18 20) the Hoare annotation is: (and (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) (or (not (= |__VERIFIER_assert_#in~cond| 1)) (not (= main_~n~0 0)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (= main_~j~0 0)))) [2021-02-21 21:22:35,809 INFO L185 CegarLoopUtils]: At program point L19-1(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-21 21:22:35,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 09:22:35 BoogieIcfgContainer [2021-02-21 21:22:35,840 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 21:22:35,848 INFO L168 Benchmark]: Toolchain (without parser) took 6905.46 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 128.2 MB in the beginning and 115.8 MB in the end (delta: 12.5 MB). Peak memory consumption was 97.5 MB. Max. memory is 8.0 GB. [2021-02-21 21:22:35,849 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 127.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:22:35,850 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.70 ms. Allocated memory is still 151.0 MB. Free memory was 127.1 MB in the beginning and 117.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 21:22:35,856 INFO L168 Benchmark]: Boogie Preprocessor took 65.23 ms. Allocated memory is still 151.0 MB. Free memory was 117.3 MB in the beginning and 115.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 21:22:35,860 INFO L168 Benchmark]: RCFGBuilder took 533.52 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 133.7 MB in the end (delta: -18.0 MB). Peak memory consumption was 20.8 MB. Max. memory is 8.0 GB. [2021-02-21 21:22:35,861 INFO L168 Benchmark]: TraceAbstraction took 5992.13 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 133.2 MB in the beginning and 115.8 MB in the end (delta: 17.5 MB). Peak memory consumption was 101.9 MB. Max. memory is 8.0 GB. [2021-02-21 21:22:35,866 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 127.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 291.70 ms. Allocated memory is still 151.0 MB. Free memory was 127.1 MB in the beginning and 117.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 65.23 ms. Allocated memory is still 151.0 MB. Free memory was 117.3 MB in the beginning and 115.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 533.52 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 133.7 MB in the end (delta: -18.0 MB). Peak memory consumption was 20.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5992.13 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 133.2 MB in the beginning and 115.8 MB in the end (delta: 17.5 MB). Peak memory consumption was 101.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: 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: 45]: Loop Invariant Derived loop invariant: 0 <= k || (0 <= k + 1 && j < n) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: 0 <= k - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: k == 0 - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: (\old(cond) == 0 || !(cond == 0)) && (((!(\old(cond) == 1) || !(n == 0)) || \old(cond) == cond) || !(j == 0)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 65 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.8s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 140 SDtfs, 226 SDslu, 121 SDs, 0 SdLazy, 368 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred 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, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 55 LocationsWithAnnotation, 76 PreInvPairs, 130 NumberOfFragments, 241 HoareAnnotationTreeSize, 76 FomulaSimplifications, 974 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 55 FomulaSimplificationsInter, 1326 FormulaSimplificationTreeSizeReductionInter, 0.7s 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...