/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/loops/n.c11.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 01:57:17,931 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 01:57:17,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 01:57:17,992 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 01:57:17,993 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 01:57:17,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 01:57:18,001 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 01:57:18,009 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 01:57:18,036 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 01:57:18,042 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 01:57:18,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 01:57:18,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 01:57:18,046 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 01:57:18,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 01:57:18,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 01:57:18,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 01:57:18,055 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 01:57:18,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 01:57:18,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 01:57:18,074 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 01:57:18,077 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 01:57:18,079 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 01:57:18,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 01:57:18,083 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 01:57:18,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 01:57:18,103 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 01:57:18,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 01:57:18,105 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 01:57:18,107 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 01:57:18,129 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 01:57:18,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 01:57:18,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 01:57:18,134 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 01:57:18,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 01:57:18,135 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 01:57:18,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 01:57:18,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 01:57:18,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 01:57:18,136 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 01:57:18,137 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 01:57:18,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 01:57:18,138 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 01:57:18,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 01:57:18,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 01:57:18,139 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 01:57:18,139 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 01:57:18,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 01:57:18,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 01:57:18,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 01:57:18,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 01:57:18,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 01:57:18,141 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 01:57:18,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 01:57:18,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 01:57:18,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 01:57:18,604 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 01:57:18,605 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 01:57:18,606 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/n.c11.c [2020-11-07 01:57:18,693 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/960d5398c/017af10f687c41be9ef4e38a75b439e7/FLAG42a9b3bfa [2020-11-07 01:57:19,387 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 01:57:19,388 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/n.c11.c [2020-11-07 01:57:19,395 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/960d5398c/017af10f687c41be9ef4e38a75b439e7/FLAG42a9b3bfa [2020-11-07 01:57:19,417 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/960d5398c/017af10f687c41be9ef4e38a75b439e7 [2020-11-07 01:57:19,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 01:57:19,427 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 01:57:19,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 01:57:19,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 01:57:19,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 01:57:19,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:57:19" (1/1) ... [2020-11-07 01:57:19,442 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@591051d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:19, skipping insertion in model container [2020-11-07 01:57:19,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:57:19" (1/1) ... [2020-11-07 01:57:19,451 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 01:57:19,469 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 01:57:19,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:57:19,639 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 01:57:19,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:57:19,670 INFO L208 MainTranslator]: Completed translation [2020-11-07 01:57:19,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:19 WrapperNode [2020-11-07 01:57:19,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 01:57:19,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 01:57:19,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 01:57:19,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 01:57:19,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:19" (1/1) ... [2020-11-07 01:57:19,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:19" (1/1) ... [2020-11-07 01:57:19,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:19" (1/1) ... [2020-11-07 01:57:19,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:19" (1/1) ... [2020-11-07 01:57:19,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:19" (1/1) ... [2020-11-07 01:57:19,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:19" (1/1) ... [2020-11-07 01:57:19,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:19" (1/1) ... [2020-11-07 01:57:19,707 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 01:57:19,709 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 01:57:19,709 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 01:57:19,709 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 01:57:19,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:19" (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 [2020-11-07 01:57:19,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 01:57:19,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 01:57:19,789 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 01:57:19,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 01:57:19,790 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 01:57:19,790 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 01:57:19,790 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 01:57:19,790 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 01:57:19,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 01:57:19,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 01:57:19,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-11-07 01:57:19,791 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 01:57:19,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 01:57:19,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 01:57:19,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 01:57:19,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 01:57:19,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 01:57:19,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 01:57:20,025 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 01:57:20,025 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-07 01:57:20,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:57:20 BoogieIcfgContainer [2020-11-07 01:57:20,043 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 01:57:20,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 01:57:20,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 01:57:20,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 01:57:20,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:57:19" (1/3) ... [2020-11-07 01:57:20,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62150dcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:57:20, skipping insertion in model container [2020-11-07 01:57:20,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:19" (2/3) ... [2020-11-07 01:57:20,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62150dcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:57:20, skipping insertion in model container [2020-11-07 01:57:20,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:57:20" (3/3) ... [2020-11-07 01:57:20,070 INFO L111 eAbstractionObserver]: Analyzing ICFG n.c11.c [2020-11-07 01:57:20,119 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 01:57:20,122 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 01:57:20,156 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 01:57:20,192 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 01:57:20,193 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 01:57:20,193 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 01:57:20,193 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 01:57:20,193 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 01:57:20,194 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 01:57:20,194 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 01:57:20,194 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 01:57:20,224 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-11-07 01:57:20,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-07 01:57:20,239 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:57:20,241 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] [2020-11-07 01:57:20,241 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:57:20,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:57:20,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1042171063, now seen corresponding path program 1 times [2020-11-07 01:57:20,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:57:20,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249217747] [2020-11-07 01:57:20,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:57:20,390 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:57:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:57:20,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:57:20,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:57:20,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 01:57:20,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249217747] [2020-11-07 01:57:20,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:57:20,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 01:57:20,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364815099] [2020-11-07 01:57:20,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 01:57:20,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:57:20,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 01:57:20,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 01:57:20,659 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-11-07 01:57:20,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:57:20,759 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-11-07 01:57:20,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 01:57:20,761 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-11-07 01:57:20,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:57:20,770 INFO L225 Difference]: With dead ends: 53 [2020-11-07 01:57:20,770 INFO L226 Difference]: Without dead ends: 30 [2020-11-07 01:57:20,774 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 [2020-11-07 01:57:20,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-07 01:57:20,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-07 01:57:20,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-07 01:57:20,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-11-07 01:57:20,831 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 21 [2020-11-07 01:57:20,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:57:20,831 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-11-07 01:57:20,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 01:57:20,832 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-11-07 01:57:20,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-07 01:57:20,833 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:57:20,833 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] [2020-11-07 01:57:20,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 01:57:20,834 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:57:20,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:57:20,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1209753595, now seen corresponding path program 1 times [2020-11-07 01:57:20,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:57:20,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026867208] [2020-11-07 01:57:20,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:57:20,840 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:57:20,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:57:21,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:57:21,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:57:21,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 01:57:21,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026867208] [2020-11-07 01:57:21,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:57:21,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 01:57:21,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123251052] [2020-11-07 01:57:21,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 01:57:21,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:57:21,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 01:57:21,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 01:57:21,045 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 6 states. [2020-11-07 01:57:21,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:57:21,380 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2020-11-07 01:57:21,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 01:57:21,381 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-11-07 01:57:21,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:57:21,383 INFO L225 Difference]: With dead ends: 55 [2020-11-07 01:57:21,384 INFO L226 Difference]: Without dead ends: 36 [2020-11-07 01:57:21,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-07 01:57:21,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-07 01:57:21,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2020-11-07 01:57:21,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-07 01:57:21,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-11-07 01:57:21,416 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 22 [2020-11-07 01:57:21,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:57:21,417 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-11-07 01:57:21,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 01:57:21,418 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-11-07 01:57:21,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-07 01:57:21,421 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:57:21,421 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] [2020-11-07 01:57:21,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 01:57:21,422 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:57:21,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:57:21,424 INFO L82 PathProgramCache]: Analyzing trace with hash -278234852, now seen corresponding path program 1 times [2020-11-07 01:57:21,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:57:21,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [904828047] [2020-11-07 01:57:21,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:57:22,024 WARN L194 SmtUtils]: Spent 504.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-11-07 01:57:22,037 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 01:57:22,039 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:57:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:57:22,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:57:22,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:57:22,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 01:57:22,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [904828047] [2020-11-07 01:57:22,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:57:22,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-07 01:57:22,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37687880] [2020-11-07 01:57:22,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 01:57:22,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:57:22,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 01:57:22,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-07 01:57:22,246 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 8 states. [2020-11-07 01:57:22,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:57:22,613 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2020-11-07 01:57:22,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-07 01:57:22,614 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-11-07 01:57:22,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:57:22,615 INFO L225 Difference]: With dead ends: 62 [2020-11-07 01:57:22,615 INFO L226 Difference]: Without dead ends: 43 [2020-11-07 01:57:22,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-11-07 01:57:22,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-07 01:57:22,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2020-11-07 01:57:22,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-07 01:57:22,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-11-07 01:57:22,628 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 29 [2020-11-07 01:57:22,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:57:22,629 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-11-07 01:57:22,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 01:57:22,629 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-11-07 01:57:22,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-07 01:57:22,630 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:57:22,631 INFO L422 BasicCegarLoop]: trace histogram [2, 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] [2020-11-07 01:57:22,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 01:57:22,631 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:57:22,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:57:22,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1552517157, now seen corresponding path program 2 times [2020-11-07 01:57:22,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:57:22,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85895443] [2020-11-07 01:57:22,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:57:23,124 WARN L194 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-11-07 01:57:23,676 WARN L194 SmtUtils]: Spent 502.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-11-07 01:57:23,679 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 01:57:23,683 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:57:23,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:57:23,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:57:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:57:23,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 01:57:23,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85895443] [2020-11-07 01:57:23,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:57:23,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-07 01:57:23,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933038095] [2020-11-07 01:57:23,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 01:57:23,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:57:23,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 01:57:23,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-07 01:57:23,883 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 10 states. [2020-11-07 01:57:24,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:57:24,526 INFO L93 Difference]: Finished difference Result 76 states and 80 transitions. [2020-11-07 01:57:24,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-07 01:57:24,529 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-11-07 01:57:24,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:57:24,531 INFO L225 Difference]: With dead ends: 76 [2020-11-07 01:57:24,531 INFO L226 Difference]: Without dead ends: 50 [2020-11-07 01:57:24,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2020-11-07 01:57:24,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-07 01:57:24,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2020-11-07 01:57:24,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-07 01:57:24,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2020-11-07 01:57:24,548 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 36 [2020-11-07 01:57:24,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:57:24,548 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2020-11-07 01:57:24,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 01:57:24,549 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2020-11-07 01:57:24,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-07 01:57:24,550 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:57:24,550 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 01:57:24,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 01:57:24,550 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:57:24,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:57:24,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1760154372, now seen corresponding path program 3 times [2020-11-07 01:57:24,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:57:24,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752415545] [2020-11-07 01:57:24,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:57:25,127 WARN L194 SmtUtils]: Spent 525.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-11-07 01:57:25,669 WARN L194 SmtUtils]: Spent 488.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-11-07 01:57:25,670 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 01:57:25,672 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:57:25,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:57:25,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:57:25,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:57:25,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 01:57:25,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752415545] [2020-11-07 01:57:25,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:57:25,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-07 01:57:25,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470256039] [2020-11-07 01:57:25,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-07 01:57:25,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:57:25,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-07 01:57:25,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-11-07 01:57:25,994 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 12 states. [2020-11-07 01:57:26,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:57:26,960 INFO L93 Difference]: Finished difference Result 90 states and 94 transitions. [2020-11-07 01:57:26,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-07 01:57:26,961 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 43 [2020-11-07 01:57:26,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:57:26,962 INFO L225 Difference]: With dead ends: 90 [2020-11-07 01:57:26,962 INFO L226 Difference]: Without dead ends: 57 [2020-11-07 01:57:26,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2020-11-07 01:57:26,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-07 01:57:26,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2020-11-07 01:57:26,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-07 01:57:26,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-11-07 01:57:26,979 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 43 [2020-11-07 01:57:26,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:57:26,979 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-11-07 01:57:26,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-07 01:57:26,979 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-11-07 01:57:26,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-07 01:57:26,981 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:57:26,981 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 01:57:26,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 01:57:26,982 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:57:26,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:57:26,982 INFO L82 PathProgramCache]: Analyzing trace with hash 635811909, now seen corresponding path program 4 times [2020-11-07 01:57:26,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:57:26,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008603376] [2020-11-07 01:57:26,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:57:27,539 WARN L194 SmtUtils]: Spent 501.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-11-07 01:57:28,064 WARN L194 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-11-07 01:57:28,065 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 01:57:28,067 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:57:28,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:57:28,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:57:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:57:28,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 01:57:28,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008603376] [2020-11-07 01:57:28,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:57:28,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-11-07 01:57:28,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356703419] [2020-11-07 01:57:28,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-07 01:57:28,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:57:28,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-07 01:57:28,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-11-07 01:57:28,374 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 14 states. [2020-11-07 01:57:29,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:57:29,545 INFO L93 Difference]: Finished difference Result 72 states and 74 transitions. [2020-11-07 01:57:29,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-07 01:57:29,547 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 50 [2020-11-07 01:57:29,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:57:29,548 INFO L225 Difference]: With dead ends: 72 [2020-11-07 01:57:29,548 INFO L226 Difference]: Without dead ends: 65 [2020-11-07 01:57:29,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2020-11-07 01:57:29,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-11-07 01:57:29,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 59. [2020-11-07 01:57:29,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-11-07 01:57:29,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2020-11-07 01:57:29,588 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 50 [2020-11-07 01:57:29,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:57:29,591 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2020-11-07 01:57:29,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-07 01:57:29,591 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2020-11-07 01:57:29,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-11-07 01:57:29,593 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:57:29,597 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 01:57:29,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 01:57:29,597 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:57:29,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:57:29,598 INFO L82 PathProgramCache]: Analyzing trace with hash 46766300, now seen corresponding path program 5 times [2020-11-07 01:57:29,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:57:29,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434128900] [2020-11-07 01:57:29,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:57:30,130 WARN L194 SmtUtils]: Spent 469.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-11-07 01:57:30,650 WARN L194 SmtUtils]: Spent 468.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-11-07 01:57:30,651 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 01:57:30,653 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:57:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:57:30,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:57:30,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:57:30,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 01:57:30,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434128900] [2020-11-07 01:57:30,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:57:30,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-07 01:57:30,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738475849] [2020-11-07 01:57:30,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-07 01:57:30,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:57:30,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-07 01:57:30,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-11-07 01:57:30,938 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 12 states. [2020-11-07 01:57:31,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:57:31,780 INFO L93 Difference]: Finished difference Result 88 states and 90 transitions. [2020-11-07 01:57:31,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-07 01:57:31,781 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-11-07 01:57:31,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:57:31,782 INFO L225 Difference]: With dead ends: 88 [2020-11-07 01:57:31,782 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 01:57:31,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2020-11-07 01:57:31,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 01:57:31,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 01:57:31,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 01:57:31,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 01:57:31,785 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2020-11-07 01:57:31,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:57:31,785 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 01:57:31,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-07 01:57:31,786 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 01:57:31,787 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 01:57:31,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-07 01:57:31,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 01:57:32,607 WARN L194 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 27 [2020-11-07 01:57:32,815 WARN L194 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 25 [2020-11-07 01:57:33,301 WARN L194 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 16 [2020-11-07 01:57:33,305 INFO L269 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2020-11-07 01:57:33,305 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-11-07 01:57:33,305 INFO L269 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true [2020-11-07 01:57:33,306 INFO L269 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true [2020-11-07 01:57:33,306 INFO L269 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true [2020-11-07 01:57:33,306 INFO L269 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true [2020-11-07 01:57:33,306 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 01:57:33,306 INFO L269 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true [2020-11-07 01:57:33,306 INFO L269 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-11-07 01:57:33,307 INFO L269 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2020-11-07 01:57:33,307 INFO L262 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-11-07 01:57:33,307 INFO L269 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true [2020-11-07 01:57:33,308 INFO L269 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true [2020-11-07 01:57:33,308 INFO L269 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-11-07 01:57:33,308 INFO L269 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-11-07 01:57:33,308 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 01:57:33,308 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-07 01:57:33,308 INFO L269 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-11-07 01:57:33,308 INFO L269 CegarLoopResult]: At program point mainEXIT(lines 14 34) the Hoare annotation is: true [2020-11-07 01:57:33,308 INFO L262 CegarLoopResult]: At program point L23(lines 23 24) the Hoare annotation is: (or (and (<= 4 main_~len~0) (<= main_~len~0 4)) (and (<= main_~len~0 3) (< 0 (+ (div main_~len~0 4294967296) 1)))) [2020-11-07 01:57:33,309 INFO L262 CegarLoopResult]: At program point L23-2(lines 23 24) the Hoare annotation is: (or (= main_~len~0 0) (and (<= main_~len~0 1) (<= 1 main_~len~0)) (and (<= main_~len~0 2) (<= 2 main_~len~0)) (and (<= main_~len~0 3) (<= 3 main_~len~0))) [2020-11-07 01:57:33,309 INFO L262 CegarLoopResult]: At program point L21-1(line 21) the Hoare annotation is: (and (< 0 (+ (div main_~len~0 4294967296) 1)) (<= main_~len~0 4)) [2020-11-07 01:57:33,309 INFO L262 CegarLoopResult]: At program point L21-3(line 21) the Hoare annotation is: (or (and (<= 4 main_~len~0) (<= main_~len~0 4)) (and (<= main_~len~0 3) (< 0 (+ (div main_~len~0 4294967296) 1)))) [2020-11-07 01:57:33,309 INFO L262 CegarLoopResult]: At program point L21-4(lines 21 29) the Hoare annotation is: (and (< 0 (+ (div main_~len~0 4294967296) 1)) (<= main_~len~0 4)) [2020-11-07 01:57:33,309 INFO L262 CegarLoopResult]: At program point L21-5(lines 21 29) the Hoare annotation is: (and (< 0 (+ (div main_~len~0 4294967296) 1)) (<= main_~len~0 4)) [2020-11-07 01:57:33,309 INFO L269 CegarLoopResult]: At program point mainFINAL(lines 14 34) the Hoare annotation is: true [2020-11-07 01:57:33,309 INFO L269 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: true [2020-11-07 01:57:33,309 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 14 34) the Hoare annotation is: true [2020-11-07 01:57:33,310 INFO L262 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (or (= main_~len~0 0) (and (<= main_~len~0 1) (<= 1 main_~len~0)) (and (<= main_~len~0 2) (<= 2 main_~len~0)) (and (<= main_~len~0 3) (<= 3 main_~len~0))) [2020-11-07 01:57:33,310 INFO L262 CegarLoopResult]: At program point L28-1(line 28) the Hoare annotation is: (or (and (<= main_~len~0 2) (<= 2 |main_#t~post8|) (<= 2 main_~len~0) (<= |main_#t~post8| 2)) (and (= |main_#t~post8| 0) (= main_~len~0 0)) (and (<= |main_#t~post8| 3) (<= main_~len~0 3) (<= 3 main_~len~0) (<= 3 |main_#t~post8|)) (and (<= |main_#t~post8| 1) (<= 1 |main_#t~post8|) (<= main_~len~0 1) (<= 1 main_~len~0))) [2020-11-07 01:57:33,310 INFO L262 CegarLoopResult]: At program point L28-2(line 28) the Hoare annotation is: (or (and (<= |main_#t~post8| 3) (<= 4 main_~len~0) (<= main_~len~0 4) (<= 3 |main_#t~post8|)) (and (<= main_~len~0 2) (<= 2 main_~len~0) (<= |main_#t~post8| 1) (<= 1 |main_#t~post8|)) (and (<= 2 |main_#t~post8|) (<= main_~len~0 3) (<= |main_#t~post8| 2) (<= 3 main_~len~0)) (and (= |main_#t~post8| 0) (<= main_~len~0 1) (<= 1 main_~len~0))) [2020-11-07 01:57:33,310 INFO L262 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: (and (<= 4 main_~len~0) (<= main_~len~0 4)) [2020-11-07 01:57:33,310 INFO L262 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (= main_~len~0 0) [2020-11-07 01:57:33,310 INFO L269 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-11-07 01:57:33,310 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2020-11-07 01:57:33,311 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 5 10) the Hoare annotation is: true [2020-11-07 01:57:33,311 INFO L262 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-07 01:57:33,311 INFO L262 CegarLoopResult]: At program point L6(lines 6 8) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-11-07 01:57:33,311 INFO L262 CegarLoopResult]: At program point L7-1(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-07 01:57:33,311 INFO L269 CegarLoopResult]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2020-11-07 01:57:33,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:57:33 BoogieIcfgContainer [2020-11-07 01:57:33,330 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 01:57:33,333 INFO L168 Benchmark]: Toolchain (without parser) took 13910.39 ms. Allocated memory was 151.0 MB in the beginning and 237.0 MB in the end (delta: 86.0 MB). Free memory was 127.1 MB in the beginning and 212.6 MB in the end (delta: -85.5 MB). Peak memory consumption was 130.8 MB. Max. memory is 8.0 GB. [2020-11-07 01:57:33,334 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 124.4 MB in the end (delta: 73.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 01:57:33,335 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.58 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 117.5 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-11-07 01:57:33,335 INFO L168 Benchmark]: Boogie Preprocessor took 35.58 ms. Allocated memory is still 151.0 MB. Free memory was 117.3 MB in the beginning and 116.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-07 01:57:33,336 INFO L168 Benchmark]: RCFGBuilder took 334.54 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 134.3 MB in the end (delta: -18.4 MB). Peak memory consumption was 17.1 MB. Max. memory is 8.0 GB. [2020-11-07 01:57:33,337 INFO L168 Benchmark]: TraceAbstraction took 13279.23 ms. Allocated memory was 151.0 MB in the beginning and 237.0 MB in the end (delta: 86.0 MB). Free memory was 134.0 MB in the beginning and 212.6 MB in the end (delta: -78.7 MB). Peak memory consumption was 136.8 MB. Max. memory is 8.0 GB. [2020-11-07 01:57:33,341 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 124.4 MB in the end (delta: 73.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 238.58 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 117.5 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.58 ms. Allocated memory is still 151.0 MB. Free memory was 117.3 MB in the beginning and 116.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 334.54 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 134.3 MB in the end (delta: -18.4 MB). Peak memory consumption was 17.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 13279.23 ms. Allocated memory was 151.0 MB in the beginning and 237.0 MB in the end (delta: 86.0 MB). Free memory was 134.0 MB in the beginning and 212.6 MB in the end (delta: -78.7 MB). Peak memory consumption was 136.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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: 21]: Loop Invariant Derived loop invariant: 0 < len / 4294967296 + 1 && len <= 4 - ProcedureContractResult [Line: 3]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 14]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 5]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.5s, OverallIterations: 7, TraceHistogramMax: 5, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 215 SDtfs, 334 SDslu, 615 SDs, 0 SdLazy, 1252 SolverSat, 73 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=6, 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, 7 MinimizatonAttempts, 18 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 40 LocationsWithAnnotation, 124 PreInvPairs, 191 NumberOfFragments, 298 HoareAnnotationTreeSize, 124 FomulaSimplifications, 5598 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 40 FomulaSimplificationsInter, 1808 FormulaSimplificationTreeSizeReductionInter, 1.0s 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...