/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-invgen/NetBSD_loop.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 02:25:40,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 02:25:40,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 02:25:40,930 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 02:25:40,957 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 02:25:40,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 02:25:40,963 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 02:25:40,964 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 02:25:40,965 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 02:25:40,970 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 02:25:40,978 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 02:25:40,982 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 02:25:40,986 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 02:25:40,988 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 02:25:40,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 02:25:40,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 02:25:41,006 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-24 02:25:41,018 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 02:25:41,030 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 02:25:41,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 02:25:41,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 02:25:41,035 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 02:25:41,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 02:25:41,035 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 02:25:41,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 02:25:41,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 02:25:41,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 02:25:41,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 02:25:41,037 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 02:25:41,037 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 02:25:41,037 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 02:25:41,037 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 02:25:41,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 02:25:41,038 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 02:25:41,038 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 02:25:41,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 02:25:41,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 02:25:41,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 02:25:41,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 02:25:41,039 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 02:25:41,039 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 02:25:41,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 02:25:41,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 02:25:41,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 02:25:41,448 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 02:25:41,449 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 02:25:41,450 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/NetBSD_loop.i [2020-10-24 02:25:41,521 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15977a2b7/8f2fb05dc8874138b7c526239b99b1d1/FLAG6243c1273 [2020-10-24 02:25:42,175 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 02:25:42,176 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/NetBSD_loop.i [2020-10-24 02:25:42,185 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15977a2b7/8f2fb05dc8874138b7c526239b99b1d1/FLAG6243c1273 [2020-10-24 02:25:42,456 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15977a2b7/8f2fb05dc8874138b7c526239b99b1d1 [2020-10-24 02:25:42,459 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 02:25:42,469 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 02:25:42,472 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 02:25:42,473 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 02:25:42,477 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 02:25:42,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:25:42" (1/1) ... [2020-10-24 02:25:42,481 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d5f172e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:42, skipping insertion in model container [2020-10-24 02:25:42,481 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:25:42" (1/1) ... [2020-10-24 02:25:42,490 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 02:25:42,510 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 02:25:42,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:25:42,774 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 02:25:42,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:25:42,820 INFO L208 MainTranslator]: Completed translation [2020-10-24 02:25:42,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:42 WrapperNode [2020-10-24 02:25:42,821 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 02:25:42,822 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 02:25:42,822 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 02:25:42,822 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 02:25:42,835 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:42" (1/1) ... [2020-10-24 02:25:42,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:42" (1/1) ... [2020-10-24 02:25:42,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:42" (1/1) ... [2020-10-24 02:25:42,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:42" (1/1) ... [2020-10-24 02:25:42,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:42" (1/1) ... [2020-10-24 02:25:42,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:42" (1/1) ... [2020-10-24 02:25:42,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:42" (1/1) ... [2020-10-24 02:25:42,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 02:25:42,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 02:25:42,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 02:25:42,883 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 02:25:42,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:42" (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 [2020-10-24 02:25:42,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 02:25:42,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 02:25:42,967 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 02:25:42,967 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-24 02:25:42,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-24 02:25:42,968 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 02:25:42,968 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 02:25:42,968 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 02:25:42,969 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-24 02:25:42,969 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-24 02:25:42,969 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 02:25:42,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 02:25:42,969 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-24 02:25:42,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-24 02:25:42,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-24 02:25:42,970 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 02:25:42,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 02:25:42,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 02:25:42,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 02:25:42,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 02:25:42,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 02:25:42,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 02:25:43,362 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 02:25:43,362 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-24 02:25:43,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:25:43 BoogieIcfgContainer [2020-10-24 02:25:43,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 02:25:43,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 02:25:43,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 02:25:43,369 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 02:25:43,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:25:42" (1/3) ... [2020-10-24 02:25:43,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ead7eaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:25:43, skipping insertion in model container [2020-10-24 02:25:43,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:42" (2/3) ... [2020-10-24 02:25:43,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ead7eaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:25:43, skipping insertion in model container [2020-10-24 02:25:43,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:25:43" (3/3) ... [2020-10-24 02:25:43,372 INFO L111 eAbstractionObserver]: Analyzing ICFG NetBSD_loop.i [2020-10-24 02:25:43,384 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 02:25:43,388 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 02:25:43,401 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 02:25:43,425 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 02:25:43,425 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 02:25:43,425 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 02:25:43,425 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 02:25:43,425 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 02:25:43,426 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 02:25:43,426 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 02:25:43,426 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 02:25:43,441 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-10-24 02:25:43,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-24 02:25:43,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:25:43,451 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] [2020-10-24 02:25:43,451 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:25:43,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:25:43,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1346092785, now seen corresponding path program 1 times [2020-10-24 02:25:43,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:25:43,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151196550] [2020-10-24 02:25:43,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:25:43,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:43,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:25:43,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:43,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:25:43,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151196550] [2020-10-24 02:25:43,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:25:43,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-24 02:25:43,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43107279] [2020-10-24 02:25:43,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 02:25:43,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:25:43,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 02:25:43,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-24 02:25:43,971 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 8 states. [2020-10-24 02:25:44,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:25:44,538 INFO L93 Difference]: Finished difference Result 83 states and 101 transitions. [2020-10-24 02:25:44,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-24 02:25:44,540 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-10-24 02:25:44,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:25:44,549 INFO L225 Difference]: With dead ends: 83 [2020-10-24 02:25:44,549 INFO L226 Difference]: Without dead ends: 49 [2020-10-24 02:25:44,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-10-24 02:25:44,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-24 02:25:44,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2020-10-24 02:25:44,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-24 02:25:44,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-10-24 02:25:44,608 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 33 [2020-10-24 02:25:44,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:25:44,608 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-10-24 02:25:44,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 02:25:44,609 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-10-24 02:25:44,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-24 02:25:44,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:25:44,611 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-24 02:25:44,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 02:25:44,612 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:25:44,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:25:44,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1045691701, now seen corresponding path program 1 times [2020-10-24 02:25:44,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:25:44,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906012668] [2020-10-24 02:25:44,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:25:44,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:44,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:25:44,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:44,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-24 02:25:44,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:44,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:25:44,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906012668] [2020-10-24 02:25:44,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:25:44,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-24 02:25:44,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688052219] [2020-10-24 02:25:44,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-24 02:25:44,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:25:44,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-24 02:25:44,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-24 02:25:44,866 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 9 states. [2020-10-24 02:25:45,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:25:45,262 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2020-10-24 02:25:45,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-24 02:25:45,263 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-10-24 02:25:45,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:25:45,265 INFO L225 Difference]: With dead ends: 57 [2020-10-24 02:25:45,265 INFO L226 Difference]: Without dead ends: 53 [2020-10-24 02:25:45,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2020-10-24 02:25:45,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-24 02:25:45,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2020-10-24 02:25:45,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-24 02:25:45,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2020-10-24 02:25:45,282 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 38 [2020-10-24 02:25:45,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:25:45,282 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2020-10-24 02:25:45,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-24 02:25:45,283 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2020-10-24 02:25:45,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-24 02:25:45,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:25:45,285 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 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] [2020-10-24 02:25:45,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 02:25:45,285 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:25:45,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:25:45,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1326012366, now seen corresponding path program 1 times [2020-10-24 02:25:45,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:25:45,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201006924] [2020-10-24 02:25:45,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:25:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:45,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:25:45,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:45,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-24 02:25:45,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:45,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:25:45,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:45,477 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-24 02:25:45,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201006924] [2020-10-24 02:25:45,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:25:45,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-24 02:25:45,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923949555] [2020-10-24 02:25:45,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 02:25:45,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:25:45,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 02:25:45,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-24 02:25:45,483 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 10 states. [2020-10-24 02:25:46,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:25:46,087 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2020-10-24 02:25:46,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-24 02:25:46,088 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2020-10-24 02:25:46,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:25:46,090 INFO L225 Difference]: With dead ends: 67 [2020-10-24 02:25:46,090 INFO L226 Difference]: Without dead ends: 63 [2020-10-24 02:25:46,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2020-10-24 02:25:46,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-24 02:25:46,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 60. [2020-10-24 02:25:46,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-24 02:25:46,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-10-24 02:25:46,109 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 47 [2020-10-24 02:25:46,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:25:46,110 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-10-24 02:25:46,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 02:25:46,110 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-10-24 02:25:46,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-24 02:25:46,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:25:46,112 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 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] [2020-10-24 02:25:46,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 02:25:46,112 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:25:46,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:25:46,113 INFO L82 PathProgramCache]: Analyzing trace with hash 851068374, now seen corresponding path program 2 times [2020-10-24 02:25:46,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:25:46,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173278820] [2020-10-24 02:25:46,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:25:46,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:46,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:25:46,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:46,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-24 02:25:46,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:46,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:25:46,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:46,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:25:46,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:46,365 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-24 02:25:46,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173278820] [2020-10-24 02:25:46,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:25:46,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-24 02:25:46,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291027210] [2020-10-24 02:25:46,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-24 02:25:46,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:25:46,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-24 02:25:46,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-24 02:25:46,368 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 11 states. [2020-10-24 02:25:47,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:25:47,043 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-10-24 02:25:47,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-24 02:25:47,046 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-10-24 02:25:47,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:25:47,047 INFO L225 Difference]: With dead ends: 71 [2020-10-24 02:25:47,048 INFO L226 Difference]: Without dead ends: 67 [2020-10-24 02:25:47,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2020-10-24 02:25:47,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-24 02:25:47,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2020-10-24 02:25:47,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-24 02:25:47,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2020-10-24 02:25:47,070 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 52 [2020-10-24 02:25:47,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:25:47,070 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2020-10-24 02:25:47,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-24 02:25:47,071 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2020-10-24 02:25:47,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-24 02:25:47,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:25:47,073 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 2, 2, 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] [2020-10-24 02:25:47,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-24 02:25:47,073 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:25:47,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:25:47,074 INFO L82 PathProgramCache]: Analyzing trace with hash 929313869, now seen corresponding path program 3 times [2020-10-24 02:25:47,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:25:47,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096203938] [2020-10-24 02:25:47,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:25:47,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:47,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:25:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:47,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-24 02:25:47,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:47,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:25:47,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:47,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:25:47,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:47,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 02:25:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:47,247 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-24 02:25:47,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096203938] [2020-10-24 02:25:47,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:25:47,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-24 02:25:47,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181001462] [2020-10-24 02:25:47,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-24 02:25:47,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:25:47,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-24 02:25:47,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-24 02:25:47,249 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 12 states. [2020-10-24 02:25:48,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:25:48,080 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2020-10-24 02:25:48,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-24 02:25:48,081 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 61 [2020-10-24 02:25:48,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:25:48,083 INFO L225 Difference]: With dead ends: 75 [2020-10-24 02:25:48,083 INFO L226 Difference]: Without dead ends: 71 [2020-10-24 02:25:48,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2020-10-24 02:25:48,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-24 02:25:48,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2020-10-24 02:25:48,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-24 02:25:48,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2020-10-24 02:25:48,103 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 61 [2020-10-24 02:25:48,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:25:48,104 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2020-10-24 02:25:48,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-24 02:25:48,104 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2020-10-24 02:25:48,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-24 02:25:48,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:25:48,106 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 3, 2, 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] [2020-10-24 02:25:48,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-24 02:25:48,106 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:25:48,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:25:48,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1249877833, now seen corresponding path program 4 times [2020-10-24 02:25:48,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:25:48,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634954848] [2020-10-24 02:25:48,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:25:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:48,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:25:48,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:48,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-24 02:25:48,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:48,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-24 02:25:48,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:48,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-24 02:25:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:48,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-24 02:25:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:48,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-24 02:25:48,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:25:48,245 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-24 02:25:48,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634954848] [2020-10-24 02:25:48,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:25:48,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-24 02:25:48,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659559190] [2020-10-24 02:25:48,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-24 02:25:48,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:25:48,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-24 02:25:48,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-24 02:25:48,248 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 9 states. [2020-10-24 02:25:48,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:25:48,674 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2020-10-24 02:25:48,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-24 02:25:48,676 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2020-10-24 02:25:48,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:25:48,679 INFO L225 Difference]: With dead ends: 69 [2020-10-24 02:25:48,679 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 02:25:48,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2020-10-24 02:25:48,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 02:25:48,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 02:25:48,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 02:25:48,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 02:25:48,681 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 66 [2020-10-24 02:25:48,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:25:48,682 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 02:25:48,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-24 02:25:48,682 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 02:25:48,682 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 02:25:48,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-24 02:25:48,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 02:25:49,198 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 23 [2020-10-24 02:25:49,346 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 23 [2020-10-24 02:25:49,584 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 19 [2020-10-24 02:25:49,970 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 20 [2020-10-24 02:25:50,023 INFO L277 CegarLoopResult]: At program point reach_errorEXIT(line 12) the Hoare annotation is: true [2020-10-24 02:25:50,023 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-24 02:25:50,023 INFO L277 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-10-24 02:25:50,023 INFO L277 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-10-24 02:25:50,023 INFO L277 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-10-24 02:25:50,024 INFO L277 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) the Hoare annotation is: true [2020-10-24 02:25:50,024 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-24 02:25:50,024 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-10-24 02:25:50,024 INFO L277 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2020-10-24 02:25:50,024 INFO L277 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-10-24 02:25:50,024 INFO L277 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-10-24 02:25:50,024 INFO L277 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-10-24 02:25:50,025 INFO L270 CegarLoopResult]: 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)|)) [2020-10-24 02:25:50,025 INFO L277 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-10-24 02:25:50,025 INFO L277 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-10-24 02:25:50,025 INFO L277 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-10-24 02:25:50,025 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-24 02:25:50,025 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-24 02:25:50,025 INFO L277 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-10-24 02:25:50,026 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-24 02:25:50,026 INFO L274 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-10-24 02:25:50,026 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-10-24 02:25:50,026 INFO L274 CegarLoopResult]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2020-10-24 02:25:50,026 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-10-24 02:25:50,026 INFO L277 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: true [2020-10-24 02:25:50,026 INFO L270 CegarLoopResult]: At program point L33-1(line 33) the Hoare annotation is: (<= 1 main_~MAXPATHLEN~0) [2020-10-24 02:25:50,027 INFO L277 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: true [2020-10-24 02:25:50,027 INFO L277 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: true [2020-10-24 02:25:50,027 INFO L277 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: true [2020-10-24 02:25:50,028 INFO L277 CegarLoopResult]: At program point mainEXIT(lines 24 45) the Hoare annotation is: true [2020-10-24 02:25:50,028 INFO L277 CegarLoopResult]: At program point mainFINAL(lines 24 45) the Hoare annotation is: true [2020-10-24 02:25:50,028 INFO L277 CegarLoopResult]: At program point L44(lines 25 45) the Hoare annotation is: true [2020-10-24 02:25:50,029 INFO L270 CegarLoopResult]: At program point L42(lines 38 43) the Hoare annotation is: (let ((.cse0 (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0)) (.cse1 (= main_~pathbuf_off~0 0)) (.cse2 (= main_~glob2_pathbuf_off~0 0)) (.cse3 (<= main_~bound_off~0 main_~MAXPATHLEN~0))) (or (and (<= 1 main_~MAXPATHLEN~0) (= main_~glob2_p_off~0 0) .cse0 .cse1 .cse2 .cse3) (and (<= main_~glob2_p_off~0 main_~MAXPATHLEN~0) (<= 1 main_~glob2_p_off~0) .cse0 .cse1 .cse2 .cse3))) [2020-10-24 02:25:50,030 INFO L270 CegarLoopResult]: At program point L40(line 40) the Hoare annotation is: (let ((.cse0 (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0)) (.cse1 (= main_~pathbuf_off~0 0)) (.cse2 (= main_~glob2_pathbuf_off~0 0)) (.cse3 (<= main_~bound_off~0 main_~MAXPATHLEN~0))) (or (and (<= main_~glob2_p_off~0 main_~MAXPATHLEN~0) (<= 1 main_~glob2_p_off~0) .cse0 (<= 1 |main_#t~post4|) .cse1 .cse2 .cse3) (and (<= 1 main_~MAXPATHLEN~0) (= main_~glob2_p_off~0 0) .cse0 (= |main_#t~post4| 0) .cse1 .cse2 .cse3))) [2020-10-24 02:25:50,030 INFO L270 CegarLoopResult]: At program point L40-1(line 40) the Hoare annotation is: (let ((.cse0 (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0)) (.cse1 (= main_~pathbuf_off~0 0)) (.cse2 (= main_~glob2_pathbuf_off~0 0)) (.cse3 (<= main_~bound_off~0 main_~MAXPATHLEN~0))) (or (and (<= 2 main_~glob2_p_off~0) (<= 1 main_~MAXPATHLEN~0) .cse0 (<= 1 |main_#t~post4|) .cse1 .cse2 .cse3) (and (<= 1 main_~glob2_p_off~0) (<= main_~glob2_p_off~0 main_~MAXPATHLEN~0) .cse0 (= |main_#t~post4| 0) .cse1 .cse2 .cse3))) [2020-10-24 02:25:50,031 INFO L270 CegarLoopResult]: At program point L38(line 38) the Hoare annotation is: (and (<= 1 main_~MAXPATHLEN~0) (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0) (= main_~pathbuf_off~0 0) (= main_~glob2_pathbuf_off~0 0) (<= main_~bound_off~0 main_~MAXPATHLEN~0)) [2020-10-24 02:25:50,031 INFO L270 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: (and (<= 1 main_~MAXPATHLEN~0) (= main_~pathbuf_off~0 0) (<= main_~bound_off~0 main_~MAXPATHLEN~0)) [2020-10-24 02:25:50,031 INFO L270 CegarLoopResult]: At program point L38-3(lines 38 43) the Hoare annotation is: (and (<= 1 main_~MAXPATHLEN~0) (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0) (<= 0 main_~glob2_p_off~0) (= main_~pathbuf_off~0 0) (= main_~glob2_pathbuf_off~0 0) (<= main_~bound_off~0 main_~MAXPATHLEN~0)) [2020-10-24 02:25:50,031 INFO L277 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: true [2020-10-24 02:25:50,031 INFO L277 CegarLoopResult]: At program point L32-1(line 32) the Hoare annotation is: true [2020-10-24 02:25:50,031 INFO L277 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: true [2020-10-24 02:25:50,031 INFO L277 CegarLoopResult]: At program point L32-2(line 32) the Hoare annotation is: true [2020-10-24 02:25:50,032 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 24 45) the Hoare annotation is: true [2020-10-24 02:25:50,032 INFO L277 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: true [2020-10-24 02:25:50,033 INFO L270 CegarLoopResult]: At program point L41(line 41) the Hoare annotation is: (and (<= 1 main_~MAXPATHLEN~0) (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0) (<= 0 main_~glob2_p_off~0) (< main_~glob2_p_off~0 (+ main_~MAXPATHLEN~0 1)) (= main_~pathbuf_off~0 0) (= main_~glob2_pathbuf_off~0 0) (<= main_~bound_off~0 main_~MAXPATHLEN~0)) [2020-10-24 02:25:50,033 INFO L270 CegarLoopResult]: At program point L41-1(line 41) the Hoare annotation is: (let ((.cse0 (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0)) (.cse1 (= main_~pathbuf_off~0 0)) (.cse2 (= main_~glob2_pathbuf_off~0 0)) (.cse3 (<= main_~bound_off~0 main_~MAXPATHLEN~0))) (or (and (<= 1 main_~MAXPATHLEN~0) (= main_~glob2_p_off~0 0) .cse0 .cse1 .cse2 .cse3) (and (<= 1 main_~glob2_p_off~0) (<= main_~glob2_p_off~0 main_~MAXPATHLEN~0) .cse0 .cse1 .cse2 .cse3))) [2020-10-24 02:25:50,034 INFO L270 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (and (<= 1 main_~MAXPATHLEN~0) (= main_~pathbuf_off~0 0) (= main_~glob2_pathbuf_off~0 0) (<= main_~bound_off~0 main_~MAXPATHLEN~0)) [2020-10-24 02:25:50,035 INFO L270 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (and (<= 1 main_~MAXPATHLEN~0) (= main_~pathbuf_off~0 0)) [2020-10-24 02:25:50,035 INFO L270 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-24 02:25:50,035 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-10-24 02:25:50,035 INFO L270 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-24 02:25:50,035 INFO L270 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-24 02:25:50,035 INFO L270 CegarLoopResult]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-24 02:25:50,036 INFO L270 CegarLoopResult]: At program point L19-1(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-24 02:25:50,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:25:50 BoogieIcfgContainer [2020-10-24 02:25:50,060 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 02:25:50,065 INFO L168 Benchmark]: Toolchain (without parser) took 7598.40 ms. Allocated memory was 152.0 MB in the beginning and 231.7 MB in the end (delta: 79.7 MB). Free memory was 129.0 MB in the beginning and 129.9 MB in the end (delta: -864.0 kB). Peak memory consumption was 127.9 MB. Max. memory is 8.0 GB. [2020-10-24 02:25:50,066 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 152.0 MB. Free memory is still 126.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 02:25:50,075 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.64 ms. Allocated memory is still 152.0 MB. Free memory was 128.3 MB in the beginning and 118.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-24 02:25:50,076 INFO L168 Benchmark]: Boogie Preprocessor took 58.48 ms. Allocated memory is still 152.0 MB. Free memory was 118.7 MB in the beginning and 117.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-24 02:25:50,077 INFO L168 Benchmark]: RCFGBuilder took 481.80 ms. Allocated memory is still 152.0 MB. Free memory was 117.2 MB in the beginning and 101.9 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-24 02:25:50,078 INFO L168 Benchmark]: TraceAbstraction took 6694.01 ms. Allocated memory was 152.0 MB in the beginning and 231.7 MB in the end (delta: 79.7 MB). Free memory was 101.4 MB in the beginning and 129.9 MB in the end (delta: -28.5 MB). Peak memory consumption was 99.6 MB. Max. memory is 8.0 GB. [2020-10-24 02:25:50,084 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 152.0 MB. Free memory is still 126.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 348.64 ms. Allocated memory is still 152.0 MB. Free memory was 128.3 MB in the beginning and 118.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 58.48 ms. Allocated memory is still 152.0 MB. Free memory was 118.7 MB in the beginning and 117.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 481.80 ms. Allocated memory is still 152.0 MB. Free memory was 117.2 MB in the beginning and 101.9 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6694.01 ms. Allocated memory was 152.0 MB in the beginning and 231.7 MB in the end (delta: 79.7 MB). Free memory was 101.4 MB in the beginning and 129.9 MB in the end (delta: -28.5 MB). Peak memory consumption was 99.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: ((((1 <= MAXPATHLEN && glob2_pathlim_off <= MAXPATHLEN) && 0 <= glob2_p_off) && pathbuf_off == 0) && glob2_pathbuf_off == 0) && bound_off <= MAXPATHLEN - ProcedureContractResult [Line: 12]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - 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) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.2s, OverallIterations: 6, TraceHistogramMax: 6, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 207 SDtfs, 375 SDslu, 578 SDs, 0 SdLazy, 1118 SolverSat, 165 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 12 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 49 LocationsWithAnnotation, 121 PreInvPairs, 159 NumberOfFragments, 347 HoareAnnotationTreeSize, 121 FomulaSimplifications, 5244 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 49 FomulaSimplificationsInter, 1136 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 297 NumberOfCodeBlocks, 297 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 291 ConstructedInterpolants, 0 QuantifiedInterpolants, 34453 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 121/137 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...