/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/recursive-simple/id2_b3_o2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:26:58,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:26:58,975 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:26:59,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:26:59,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:26:59,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:26:59,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:26:59,043 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:26:59,046 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:26:59,052 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:26:59,053 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:26:59,054 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:26:59,055 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:26:59,058 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:26:59,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:26:59,062 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:26:59,063 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:26:59,067 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:26:59,074 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:26:59,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:26:59,084 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:26:59,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:26:59,086 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:26:59,087 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:26:59,094 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 20:26:59,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:26:59,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:26:59,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:26:59,113 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:26:59,146 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:26:59,146 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:26:59,151 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:26:59,151 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:26:59,152 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:26:59,152 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:26:59,152 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:26:59,152 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:26:59,152 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:26:59,153 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:26:59,154 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:26:59,154 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:26:59,154 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:26:59,154 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:26:59,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:26:59,155 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:26:59,155 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:26:59,155 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:26:59,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:26:59,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:26:59,156 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:26:59,156 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:26:59,156 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:26:59,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:26:59,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:26:59,605 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:26:59,606 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:26:59,607 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:26:59,608 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id2_b3_o2.c [2020-10-23 20:26:59,700 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a124802c/53b6350d53cb46f9b662e209e7aabaea/FLAG351b9819e [2020-10-23 20:27:00,338 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:27:00,339 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id2_b3_o2.c [2020-10-23 20:27:00,347 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a124802c/53b6350d53cb46f9b662e209e7aabaea/FLAG351b9819e [2020-10-23 20:27:00,710 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a124802c/53b6350d53cb46f9b662e209e7aabaea [2020-10-23 20:27:00,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:27:00,720 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:27:00,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:27:00,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:27:00,726 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:27:00,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:27:00" (1/1) ... [2020-10-23 20:27:00,731 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41a1bf8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:27:00, skipping insertion in model container [2020-10-23 20:27:00,731 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:27:00" (1/1) ... [2020-10-23 20:27:00,740 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:27:00,756 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:27:00,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:27:00,945 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:27:00,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:27:00,979 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:27:00,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:27:00 WrapperNode [2020-10-23 20:27:00,980 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:27:00,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:27:00,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:27:00,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:27:00,996 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:27:00" (1/1) ... [2020-10-23 20:27:00,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:27:00" (1/1) ... [2020-10-23 20:27:01,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:27:00" (1/1) ... [2020-10-23 20:27:01,004 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:27:00" (1/1) ... [2020-10-23 20:27:01,009 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:27:00" (1/1) ... [2020-10-23 20:27:01,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:27:00" (1/1) ... [2020-10-23 20:27:01,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:27:00" (1/1) ... [2020-10-23 20:27:01,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:27:01,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:27:01,017 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:27:01,017 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:27:01,018 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:27:00" (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 [2020-10-23 20:27:01,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:27:01,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:27:01,096 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:27:01,096 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-10-23 20:27:01,096 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2020-10-23 20:27:01,097 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:27:01,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-23 20:27:01,097 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:27:01,097 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:27:01,097 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:27:01,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:27:01,098 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-10-23 20:27:01,098 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2020-10-23 20:27:01,098 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:27:01,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:27:01,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:27:01,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:27:01,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:27:01,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:27:01,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:27:01,389 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:27:01,389 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-23 20:27:01,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:27:01 BoogieIcfgContainer [2020-10-23 20:27:01,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:27:01,434 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:27:01,434 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:27:01,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:27:01,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:27:00" (1/3) ... [2020-10-23 20:27:01,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b51c421 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:27:01, skipping insertion in model container [2020-10-23 20:27:01,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:27:00" (2/3) ... [2020-10-23 20:27:01,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b51c421 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:27:01, skipping insertion in model container [2020-10-23 20:27:01,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:27:01" (3/3) ... [2020-10-23 20:27:01,449 INFO L111 eAbstractionObserver]: Analyzing ICFG id2_b3_o2.c [2020-10-23 20:27:01,477 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:27:01,482 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:27:01,503 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:27:01,529 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:27:01,529 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:27:01,530 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:27:01,530 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:27:01,530 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:27:01,530 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:27:01,530 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:27:01,530 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:27:01,548 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-10-23 20:27:01,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-23 20:27:01,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:27:01,560 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] [2020-10-23 20:27:01,560 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:27:01,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:27:01,567 INFO L82 PathProgramCache]: Analyzing trace with hash 138014369, now seen corresponding path program 1 times [2020-10-23 20:27:01,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:27:01,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085282620] [2020-10-23 20:27:01,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:27:01,659 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:27:01,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:02,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:27:02,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:02,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-23 20:27:02,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:02,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:27:02,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085282620] [2020-10-23 20:27:02,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:27:02,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 20:27:02,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444756058] [2020-10-23 20:27:02,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 20:27:02,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:27:02,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 20:27:02,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 20:27:02,101 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 6 states. [2020-10-23 20:27:02,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:27:02,715 INFO L93 Difference]: Finished difference Result 64 states and 71 transitions. [2020-10-23 20:27:02,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 20:27:02,717 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-23 20:27:02,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:27:02,727 INFO L225 Difference]: With dead ends: 64 [2020-10-23 20:27:02,727 INFO L226 Difference]: Without dead ends: 45 [2020-10-23 20:27:02,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:27:02,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-23 20:27:02,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-23 20:27:02,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-23 20:27:02,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-23 20:27:02,791 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 25 [2020-10-23 20:27:02,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:27:02,791 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-23 20:27:02,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 20:27:02,792 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-23 20:27:02,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-23 20:27:02,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:27:02,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:27:02,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:27:02,800 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:27:02,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:27:02,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1111577060, now seen corresponding path program 1 times [2020-10-23 20:27:02,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:27:02,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195930152] [2020-10-23 20:27:02,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:27:02,805 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:27:02,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:02,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:27:02,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:02,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-23 20:27:02,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:02,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:27:02,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:03,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:27:03,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195930152] [2020-10-23 20:27:03,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:27:03,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 20:27:03,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612857259] [2020-10-23 20:27:03,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 20:27:03,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:27:03,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 20:27:03,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 20:27:03,007 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 6 states. [2020-10-23 20:27:03,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:27:03,341 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2020-10-23 20:27:03,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 20:27:03,342 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-10-23 20:27:03,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:27:03,344 INFO L225 Difference]: With dead ends: 73 [2020-10-23 20:27:03,345 INFO L226 Difference]: Without dead ends: 53 [2020-10-23 20:27:03,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:27:03,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-23 20:27:03,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2020-10-23 20:27:03,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-23 20:27:03,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-10-23 20:27:03,365 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 34 [2020-10-23 20:27:03,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:27:03,366 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-10-23 20:27:03,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 20:27:03,366 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-10-23 20:27:03,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-23 20:27:03,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:27:03,368 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:27:03,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:27:03,368 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:27:03,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:27:03,369 INFO L82 PathProgramCache]: Analyzing trace with hash 982288804, now seen corresponding path program 1 times [2020-10-23 20:27:03,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:27:03,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166049568] [2020-10-23 20:27:03,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:27:03,373 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:27:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:03,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:27:03,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:03,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-23 20:27:03,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:03,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:27:03,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:03,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:27:03,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166049568] [2020-10-23 20:27:03,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:27:03,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 20:27:03,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808588461] [2020-10-23 20:27:03,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 20:27:03,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:27:03,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 20:27:03,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-23 20:27:03,583 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 9 states. [2020-10-23 20:27:04,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:27:04,182 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2020-10-23 20:27:04,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-23 20:27:04,183 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-10-23 20:27:04,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:27:04,185 INFO L225 Difference]: With dead ends: 59 [2020-10-23 20:27:04,185 INFO L226 Difference]: Without dead ends: 53 [2020-10-23 20:27:04,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-10-23 20:27:04,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-23 20:27:04,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2020-10-23 20:27:04,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-23 20:27:04,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-23 20:27:04,202 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 34 [2020-10-23 20:27:04,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:27:04,202 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-23 20:27:04,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 20:27:04,202 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-23 20:27:04,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-23 20:27:04,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:27:04,204 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:27:04,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:27:04,205 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:27:04,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:27:04,206 INFO L82 PathProgramCache]: Analyzing trace with hash 935446002, now seen corresponding path program 1 times [2020-10-23 20:27:04,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:27:04,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32501869] [2020-10-23 20:27:04,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:27:04,861 WARN L193 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 50 [2020-10-23 20:27:05,456 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 50 [2020-10-23 20:27:05,693 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:27:05,862 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:27:05,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:05,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:27:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:05,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-23 20:27:05,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:06,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:27:06,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:27:06,036 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-23 20:27:06,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32501869] [2020-10-23 20:27:06,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:27:06,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 20:27:06,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865349281] [2020-10-23 20:27:06,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-23 20:27:06,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:27:06,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-23 20:27:06,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-23 20:27:06,253 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 12 states. [2020-10-23 20:27:07,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:27:07,431 INFO L93 Difference]: Finished difference Result 78 states and 83 transitions. [2020-10-23 20:27:07,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 20:27:07,432 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 43 [2020-10-23 20:27:07,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:27:07,433 INFO L225 Difference]: With dead ends: 78 [2020-10-23 20:27:07,433 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 20:27:07,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2020-10-23 20:27:07,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 20:27:07,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 20:27:07,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 20:27:07,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 20:27:07,436 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2020-10-23 20:27:07,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:27:07,436 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 20:27:07,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-23 20:27:07,437 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 20:27:07,437 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 20:27:07,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:27:07,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 20:27:07,885 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 26 [2020-10-23 20:27:08,140 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 32 [2020-10-23 20:27:08,361 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 26 [2020-10-23 20:27:08,786 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 21 [2020-10-23 20:27:09,054 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 26 [2020-10-23 20:27:09,270 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 29 [2020-10-23 20:27:09,468 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 21 [2020-10-23 20:27:09,677 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 32 [2020-10-23 20:27:09,894 INFO L270 CegarLoopResult]: At program point reach_errorEXIT(line 4) the Hoare annotation is: (or (not (<= |main_#t~ret10| 3)) (not (<= 3 |main_#t~ret10|))) [2020-10-23 20:27:09,895 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-10-23 20:27:09,895 INFO L270 CegarLoopResult]: At program point reach_errorFINAL(line 4) the Hoare annotation is: (or (not (<= |main_#t~ret10| 3)) (not (<= 3 |main_#t~ret10|))) [2020-10-23 20:27:09,895 INFO L270 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) the Hoare annotation is: (or (not (<= |main_#t~ret10| 3)) (not (<= 3 |main_#t~ret10|))) [2020-10-23 20:27:09,896 INFO L277 CegarLoopResult]: At program point L4-3(line 4) the Hoare annotation is: true [2020-10-23 20:27:09,896 INFO L277 CegarLoopResult]: At program point L4-4(line 4) the Hoare annotation is: true [2020-10-23 20:27:09,896 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 20:27:09,896 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-10-23 20:27:09,897 INFO L277 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 4) the Hoare annotation is: true [2020-10-23 20:27:09,897 INFO L270 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|)) [2020-10-23 20:27:09,897 INFO L277 CegarLoopResult]: At program point L4(line 4) the Hoare annotation is: true [2020-10-23 20:27:09,898 INFO L277 CegarLoopResult]: At program point L4-1(line 4) the Hoare annotation is: true [2020-10-23 20:27:09,898 INFO L277 CegarLoopResult]: At program point L4-2(line 4) the Hoare annotation is: true [2020-10-23 20:27:09,898 INFO L277 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-10-23 20:27:09,898 INFO L270 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (let ((.cse0 (+ |id2_#in~x| 1))) (or (not (= |id_#in~x| .cse0)) (and (not (= (mod id2_~x 4294967296) 0)) (= id2_~x |id2_#in~x|)) (= (mod .cse0 4294967296) 0))) [2020-10-23 20:27:09,898 INFO L270 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (let ((.cse0 (+ |id2_#in~x| 1))) (or (not (= |id_#in~x| .cse0)) (and (not (= (mod id2_~x 4294967296) 0)) (= id2_~x |id2_#in~x|)) (= (mod .cse0 4294967296) 0))) [2020-10-23 20:27:09,899 INFO L270 CegarLoopResult]: At program point id2FINAL(lines 16 21) the Hoare annotation is: (let ((.cse1 (= id2_~x |id2_#in~x|)) (.cse0 (+ |id2_#in~x| 1))) (or (not (= |id_#in~x| .cse0)) (and (<= |id2_#res| 0) (<= 0 |id2_#res|) .cse1) (and (not (= (mod id2_~x 4294967296) 0)) .cse1) (= (mod .cse0 4294967296) 0))) [2020-10-23 20:27:09,899 INFO L270 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (let ((.cse0 (+ |id2_#in~x| 1))) (or (not (= |id_#in~x| .cse0)) (and (not (= (mod id2_~x 4294967296) 0)) (= id2_~x |id2_#in~x|)) (= (mod .cse0 4294967296) 0))) [2020-10-23 20:27:09,899 INFO L270 CegarLoopResult]: At program point L19-1(line 19) the Hoare annotation is: (let ((.cse0 (+ |id2_#in~x| 1))) (or (not (= |id_#in~x| .cse0)) (and (not (= (mod id2_~x 4294967296) 0)) (= id2_~x |id2_#in~x|)) (= (mod .cse0 4294967296) 0))) [2020-10-23 20:27:09,899 INFO L270 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (let ((.cse0 (+ |id2_#in~x| 1))) (or (not (= |id_#in~x| .cse0)) (= id2_~x |id2_#in~x|) (= (mod .cse0 4294967296) 0))) [2020-10-23 20:27:09,900 INFO L270 CegarLoopResult]: At program point L18-1(line 18) the Hoare annotation is: (let ((.cse0 (+ |id2_#in~x| 1))) (or (not (= |id_#in~x| .cse0)) (and (not (= (mod id2_~x 4294967296) 0)) (= id2_~x |id2_#in~x|)) (= (mod .cse0 4294967296) 0))) [2020-10-23 20:27:09,900 INFO L270 CegarLoopResult]: At program point L17-1(line 17) the Hoare annotation is: (let ((.cse0 (+ |id2_#in~x| 1))) (or (not (= |id_#in~x| .cse0)) (= id2_~x |id2_#in~x|) (= (mod .cse0 4294967296) 0))) [2020-10-23 20:27:09,900 INFO L270 CegarLoopResult]: At program point L18-2(line 18) the Hoare annotation is: (let ((.cse0 (+ |id2_#in~x| 1))) (or (not (= |id_#in~x| .cse0)) (and (not (= (mod id2_~x 4294967296) 0)) (= id2_~x |id2_#in~x|)) (= (mod .cse0 4294967296) 0))) [2020-10-23 20:27:09,900 INFO L270 CegarLoopResult]: At program point id2EXIT(lines 16 21) the Hoare annotation is: (let ((.cse1 (= id2_~x |id2_#in~x|)) (.cse0 (+ |id2_#in~x| 1))) (or (not (= |id_#in~x| .cse0)) (and (<= |id2_#res| 0) (<= 0 |id2_#res|) .cse1) (and (not (= (mod id2_~x 4294967296) 0)) .cse1) (= (mod .cse0 4294967296) 0))) [2020-10-23 20:27:09,900 INFO L277 CegarLoopResult]: At program point id2ENTRY(lines 16 21) the Hoare annotation is: true [2020-10-23 20:27:09,900 INFO L277 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-10-23 20:27:09,901 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 20:27:09,901 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 20:27:09,901 INFO L277 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-10-23 20:27:09,901 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 23 29) the Hoare annotation is: true [2020-10-23 20:27:09,901 INFO L270 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: (and (<= |id_#res| 3) (<= 3 |id_#res|)) [2020-10-23 20:27:09,901 INFO L270 CegarLoopResult]: At program point L26(lines 26 28) the Hoare annotation is: (or (and (<= |id_#res| 3) (<= 3 |id_#res|)) (and (<= main_~result~0 1) (< 0 (+ (div main_~result~0 4294967296) 1)))) [2020-10-23 20:27:09,902 INFO L270 CegarLoopResult]: At program point L27-1(line 27) the Hoare annotation is: false [2020-10-23 20:27:09,902 INFO L277 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: true [2020-10-23 20:27:09,902 INFO L277 CegarLoopResult]: At program point mainEXIT(lines 23 29) the Hoare annotation is: true [2020-10-23 20:27:09,902 INFO L277 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: true [2020-10-23 20:27:09,902 INFO L277 CegarLoopResult]: At program point L25-1(line 25) the Hoare annotation is: true [2020-10-23 20:27:09,903 INFO L277 CegarLoopResult]: At program point L26-2(lines 23 29) the Hoare annotation is: true [2020-10-23 20:27:09,903 INFO L277 CegarLoopResult]: At program point L25-2(line 25) the Hoare annotation is: true [2020-10-23 20:27:09,903 INFO L270 CegarLoopResult]: At program point idFINAL(lines 9 14) the Hoare annotation is: (let ((.cse0 (= |id_#in~x| id_~x))) (and (or (and (not (= (mod id_~x 4294967296) 0)) .cse0) (and (<= |id_#res| 1) (<= id_~ret~0 1) (<= 1 |id_#res|) (<= 1 id_~ret~0)) (and (<= 0 |id_#res|) (<= |id_#res| 0))) (or (not (= (+ |id_#in~x| 1) |id2_#in~x|)) .cse0 (= (mod |id2_#in~x| 4294967296) 0) (= (mod (+ |id2_#in~x| 1) 4294967296) 0)))) [2020-10-23 20:27:09,903 INFO L270 CegarLoopResult]: At program point idEXIT(lines 9 14) the Hoare annotation is: (let ((.cse0 (= |id_#in~x| id_~x))) (and (or (and (not (= (mod id_~x 4294967296) 0)) .cse0) (and (<= |id_#res| 1) (<= id_~ret~0 1) (<= 1 |id_#res|) (<= 1 id_~ret~0)) (and (<= 0 |id_#res|) (<= |id_#res| 0))) (or (not (= (+ |id_#in~x| 1) |id2_#in~x|)) .cse0 (= (mod |id2_#in~x| 4294967296) 0) (= (mod (+ |id2_#in~x| 1) 4294967296) 0)))) [2020-10-23 20:27:09,903 INFO L277 CegarLoopResult]: At program point idENTRY(lines 9 14) the Hoare annotation is: true [2020-10-23 20:27:09,904 INFO L270 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (let ((.cse0 (and (not (= (mod id_~x 4294967296) 0)) (= |id_#in~x| id_~x)))) (and (or .cse0 (not (= (+ |id_#in~x| 1) |id2_#in~x|)) (= (mod |id2_#in~x| 4294967296) 0) (= (mod (+ |id2_#in~x| 1) 4294967296) 0)) (or .cse0 (and (<= id_~ret~0 1) (<= 1 id_~ret~0))))) [2020-10-23 20:27:09,904 INFO L270 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: (let ((.cse0 (and (not (= (mod id_~x 4294967296) 0)) (= |id_#in~x| id_~x)))) (and (or .cse0 (not (= (+ |id_#in~x| 1) |id2_#in~x|)) (= (mod |id2_#in~x| 4294967296) 0) (= (mod (+ |id2_#in~x| 1) 4294967296) 0)) (or .cse0 (and (<= id_~ret~0 1) (<= 1 id_~ret~0))))) [2020-10-23 20:27:09,904 INFO L270 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: (and (not (= (mod id_~x 4294967296) 0)) (= |id_#in~x| id_~x)) [2020-10-23 20:27:09,904 INFO L270 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: (and (not (= (mod id_~x 4294967296) 0)) (= |id_#in~x| id_~x)) [2020-10-23 20:27:09,905 INFO L270 CegarLoopResult]: At program point L10(line 10) the Hoare annotation is: (= |id_#in~x| id_~x) [2020-10-23 20:27:09,905 INFO L270 CegarLoopResult]: At program point L11-1(line 11) the Hoare annotation is: (let ((.cse0 (and (not (= (mod id_~x 4294967296) 0)) (= |id_#in~x| id_~x)))) (and (or .cse0 (not (= (+ |id_#in~x| 1) |id2_#in~x|)) (= (mod |id2_#in~x| 4294967296) 0) (= (mod (+ |id2_#in~x| 1) 4294967296) 0)) (or .cse0 (and (<= 0 |id_#t~ret7|) (<= |id_#t~ret7| 0))))) [2020-10-23 20:27:09,905 INFO L270 CegarLoopResult]: At program point L10-1(line 10) the Hoare annotation is: (or (not (= (+ |id_#in~x| 1) |id2_#in~x|)) (= |id_#in~x| id_~x) (= (mod |id2_#in~x| 4294967296) 0) (= (mod (+ |id2_#in~x| 1) 4294967296) 0)) [2020-10-23 20:27:09,905 INFO L270 CegarLoopResult]: At program point L11-2(line 11) the Hoare annotation is: (let ((.cse0 (and (not (= (mod id_~x 4294967296) 0)) (= |id_#in~x| id_~x)))) (and (or .cse0 (not (= (+ |id_#in~x| 1) |id2_#in~x|)) (= (mod |id2_#in~x| 4294967296) 0) (= (mod (+ |id2_#in~x| 1) 4294967296) 0)) (or .cse0 (and (<= 0 |id_#t~ret7|) (<= id_~ret~0 1) (<= |id_#t~ret7| 0) (<= 1 id_~ret~0))))) [2020-10-23 20:27:09,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:27:09 BoogieIcfgContainer [2020-10-23 20:27:09,932 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:27:09,934 INFO L168 Benchmark]: Toolchain (without parser) took 9218.91 ms. Allocated memory was 125.8 MB in the beginning and 181.4 MB in the end (delta: 55.6 MB). Free memory was 102.3 MB in the beginning and 149.3 MB in the end (delta: -47.0 MB). Peak memory consumption was 100.3 MB. Max. memory is 8.0 GB. [2020-10-23 20:27:09,935 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 125.8 MB. Free memory was 102.6 MB in the beginning and 102.5 MB in the end (delta: 131.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:27:09,936 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.15 ms. Allocated memory is still 125.8 MB. Free memory was 101.7 MB in the beginning and 92.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 20:27:09,937 INFO L168 Benchmark]: Boogie Preprocessor took 34.17 ms. Allocated memory is still 125.8 MB. Free memory was 92.4 MB in the beginning and 91.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:27:09,938 INFO L168 Benchmark]: RCFGBuilder took 408.29 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 91.0 MB in the beginning and 134.4 MB in the end (delta: -43.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 8.0 GB. [2020-10-23 20:27:09,939 INFO L168 Benchmark]: TraceAbstraction took 8498.26 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 133.8 MB in the beginning and 149.3 MB in the end (delta: -15.6 MB). Peak memory consumption was 106.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:27:09,944 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 125.8 MB. Free memory was 102.6 MB in the beginning and 102.5 MB in the end (delta: 131.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 259.15 ms. Allocated memory is still 125.8 MB. Free memory was 101.7 MB in the beginning and 92.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.17 ms. Allocated memory is still 125.8 MB. Free memory was 92.4 MB in the beginning and 91.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 408.29 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 91.0 MB in the beginning and 134.4 MB in the end (delta: -43.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 8498.26 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 133.8 MB in the beginning and 149.3 MB in the end (delta: -15.6 MB). Peak memory consumption was 106.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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 - ProcedureContractResult [Line: 4]: Procedure Contract for reach_error Derived contract for procedure reach_error: !(aux-id(input)-aux <= 3) || !(3 <= aux-id(input)-aux) - ProcedureContractResult [Line: 16]: Procedure Contract for id2 Derived contract for procedure id2: ((!(\old(x) == \old(x) + 1) || ((\result <= 0 && 0 <= \result) && x == \old(x))) || (!(x % 4294967296 == 0) && x == \old(x))) || (\old(x) + 1) % 4294967296 == 0 - ProcedureContractResult [Line: 23]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 9]: Procedure Contract for id Derived contract for procedure id: (((!(x % 4294967296 == 0) && \old(x) == x) || (((\result <= 1 && ret <= 1) && 1 <= \result) && 1 <= ret)) || (0 <= \result && \result <= 0)) && (((!(\old(x) + 1 == \old(x)) || \old(x) == x) || \old(x) % 4294967296 == 0) || (\old(x) + 1) % 4294967296 == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.9s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 180 SDtfs, 211 SDslu, 280 SDs, 0 SdLazy, 671 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 50 LocationsWithAnnotation, 84 PreInvPairs, 163 NumberOfFragments, 705 HoareAnnotationTreeSize, 84 FomulaSimplifications, 3555 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 50 FomulaSimplificationsInter, 2385 FormulaSimplificationTreeSizeReductionInter, 2.1s 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...