/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 21:56:42,948 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 21:56:42,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 21:56:42,968 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 21:56:42,969 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 21:56:42,971 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 21:56:42,973 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 21:56:42,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 21:56:42,978 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 21:56:42,979 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 21:56:42,983 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 21:56:42,984 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 21:56:42,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 21:56:42,989 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 21:56:42,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 21:56:42,994 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 21:56:42,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 21:56:42,996 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 21:56:43,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 21:56:43,003 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 21:56:43,006 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 21:56:43,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 21:56:43,008 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 21:56:43,008 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 21:56:43,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 21:56:43,022 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 21:56:43,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 21:56:43,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 21:56:43,024 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-23 21:56:43,037 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 21:56:43,038 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 21:56:43,039 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-23 21:56:43,039 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-23 21:56:43,039 INFO L138 SettingsManager]: * Use SBE=true [2019-11-23 21:56:43,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 21:56:43,040 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 21:56:43,040 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 21:56:43,040 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 21:56:43,040 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 21:56:43,041 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 21:56:43,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 21:56:43,041 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 21:56:43,041 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-23 21:56:43,041 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 21:56:43,042 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 21:56:43,042 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-23 21:56:43,042 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 21:56:43,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 21:56:43,042 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-23 21:56:43,043 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 21:56:43,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 21:56:43,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 21:56:43,043 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 21:56:43,043 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 21:56:43,044 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 21:56:43,044 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-23 21:56:43,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 21:56:43,044 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 21:56:43,044 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 21:56:43,312 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 21:56:43,323 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 21:56:43,328 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 21:56:43,329 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 21:56:43,329 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 21:56:43,330 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test07.c [2019-11-23 21:56:43,385 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45f9235d4/b8e30371534b4bf0a23c500ce0b08521/FLAGb436fa5f1 [2019-11-23 21:56:43,834 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 21:56:43,837 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test07.c [2019-11-23 21:56:43,843 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45f9235d4/b8e30371534b4bf0a23c500ce0b08521/FLAGb436fa5f1 [2019-11-23 21:56:44,260 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45f9235d4/b8e30371534b4bf0a23c500ce0b08521 [2019-11-23 21:56:44,271 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 21:56:44,272 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 21:56:44,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 21:56:44,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 21:56:44,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 21:56:44,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:56:44" (1/1) ... [2019-11-23 21:56:44,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d465e39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:44, skipping insertion in model container [2019-11-23 21:56:44,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:56:44" (1/1) ... [2019-11-23 21:56:44,289 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 21:56:44,304 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 21:56:44,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 21:56:44,495 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 21:56:44,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 21:56:44,524 INFO L208 MainTranslator]: Completed translation [2019-11-23 21:56:44,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:44 WrapperNode [2019-11-23 21:56:44,525 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 21:56:44,525 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 21:56:44,525 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 21:56:44,525 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 21:56:44,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:44" (1/1) ... [2019-11-23 21:56:44,619 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:44" (1/1) ... [2019-11-23 21:56:44,638 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 21:56:44,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 21:56:44,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 21:56:44,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 21:56:44,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:44" (1/1) ... [2019-11-23 21:56:44,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:44" (1/1) ... [2019-11-23 21:56:44,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:44" (1/1) ... [2019-11-23 21:56:44,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:44" (1/1) ... [2019-11-23 21:56:44,654 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:44" (1/1) ... [2019-11-23 21:56:44,656 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:44" (1/1) ... [2019-11-23 21:56:44,658 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:44" (1/1) ... [2019-11-23 21:56:44,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 21:56:44,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 21:56:44,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 21:56:44,660 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 21:56:44,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:44" (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 [2019-11-23 21:56:44,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 21:56:44,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 21:56:44,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 21:56:44,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 21:56:44,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-23 21:56:44,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 21:56:44,943 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 21:56:44,944 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-23 21:56:44,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:56:44 BoogieIcfgContainer [2019-11-23 21:56:44,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 21:56:44,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 21:56:44,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 21:56:44,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 21:56:44,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:56:44" (1/3) ... [2019-11-23 21:56:44,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f659661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:56:44, skipping insertion in model container [2019-11-23 21:56:44,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:56:44" (2/3) ... [2019-11-23 21:56:44,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f659661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:56:44, skipping insertion in model container [2019-11-23 21:56:44,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:56:44" (3/3) ... [2019-11-23 21:56:44,972 INFO L109 eAbstractionObserver]: Analyzing ICFG test07.c [2019-11-23 21:56:45,003 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 21:56:45,021 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 21:56:45,034 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 21:56:45,062 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 21:56:45,062 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 21:56:45,062 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 21:56:45,062 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 21:56:45,063 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 21:56:45,063 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 21:56:45,063 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 21:56:45,063 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 21:56:45,080 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-11-23 21:56:45,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-23 21:56:45,086 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 21:56:45,086 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-23 21:56:45,087 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 21:56:45,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 21:56:45,091 INFO L82 PathProgramCache]: Analyzing trace with hash 889508715, now seen corresponding path program 1 times [2019-11-23 21:56:45,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 21:56:45,099 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436970277] [2019-11-23 21:56:45,099 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 21:56:45,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 21:56:45,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 21:56:45,354 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436970277] [2019-11-23 21:56:45,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 21:56:45,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 21:56:45,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94961098] [2019-11-23 21:56:45,360 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 21:56:45,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 21:56:45,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 21:56:45,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-23 21:56:45,373 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 4 states. [2019-11-23 21:56:45,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 21:56:45,486 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2019-11-23 21:56:45,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 21:56:45,488 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-11-23 21:56:45,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 21:56:45,498 INFO L225 Difference]: With dead ends: 20 [2019-11-23 21:56:45,498 INFO L226 Difference]: Without dead ends: 7 [2019-11-23 21:56:45,502 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-23 21:56:45,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-11-23 21:56:45,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-23 21:56:45,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-23 21:56:45,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2019-11-23 21:56:45,538 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2019-11-23 21:56:45,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 21:56:45,539 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2019-11-23 21:56:45,539 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 21:56:45,539 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2019-11-23 21:56:45,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-23 21:56:45,540 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 21:56:45,540 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-23 21:56:45,540 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 21:56:45,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 21:56:45,541 INFO L82 PathProgramCache]: Analyzing trace with hash 889568297, now seen corresponding path program 1 times [2019-11-23 21:56:45,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 21:56:45,542 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843518681] [2019-11-23 21:56:45,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 21:56:45,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 21:56:45,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 21:56:45,706 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843518681] [2019-11-23 21:56:45,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 21:56:45,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 21:56:45,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9962763] [2019-11-23 21:56:45,716 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 21:56:45,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 21:56:45,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 21:56:45,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-23 21:56:45,717 INFO L87 Difference]: Start difference. First operand 7 states and 6 transitions. Second operand 4 states. [2019-11-23 21:56:45,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 21:56:45,751 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2019-11-23 21:56:45,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 21:56:45,751 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-11-23 21:56:45,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 21:56:45,752 INFO L225 Difference]: With dead ends: 7 [2019-11-23 21:56:45,752 INFO L226 Difference]: Without dead ends: 0 [2019-11-23 21:56:45,753 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-23 21:56:45,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-23 21:56:45,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-23 21:56:45,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-23 21:56:45,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-23 21:56:45,755 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2019-11-23 21:56:45,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 21:56:45,755 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-23 21:56:45,755 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 21:56:45,755 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-23 21:56:45,756 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-23 21:56:45,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-23 21:56:45,793 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-23 21:56:45,794 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-23 21:56:45,794 INFO L440 ceAbstractionStarter]: At program point L30(lines 17 37) the Hoare annotation is: false [2019-11-23 21:56:45,794 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-23 21:56:45,794 INFO L444 ceAbstractionStarter]: For program point L29(lines 29 31) no Hoare annotation was computed. [2019-11-23 21:56:45,795 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-23 21:56:45,795 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 35) no Hoare annotation was computed. [2019-11-23 21:56:45,795 INFO L440 ceAbstractionStarter]: At program point L13(lines 7 15) the Hoare annotation is: (and (not (= 0 |ULTIMATE.start_f_#res|)) (= ~p2~0.offset ~p1~0.offset) (= ~p2~0.base ~p1~0.base)) [2019-11-23 21:56:45,795 INFO L444 ceAbstractionStarter]: For program point L9(lines 9 14) no Hoare annotation was computed. [2019-11-23 21:56:45,796 INFO L447 ceAbstractionStarter]: At program point L36(lines 17 37) the Hoare annotation is: true [2019-11-23 21:56:45,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:56:45 BoogieIcfgContainer [2019-11-23 21:56:45,816 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-23 21:56:45,820 INFO L168 Benchmark]: Toolchain (without parser) took 1545.76 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 100.5 MB in the beginning and 117.4 MB in the end (delta: -16.8 MB). Peak memory consumption was 46.6 MB. Max. memory is 7.1 GB. [2019-11-23 21:56:45,822 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 136.8 MB. Free memory was 118.8 MB in the beginning and 118.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-23 21:56:45,824 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.40 ms. Allocated memory is still 136.8 MB. Free memory was 100.3 MB in the beginning and 90.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2019-11-23 21:56:45,826 INFO L168 Benchmark]: Boogie Procedure Inliner took 113.18 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 90.4 MB in the beginning and 178.9 MB in the end (delta: -88.4 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2019-11-23 21:56:45,828 INFO L168 Benchmark]: Boogie Preprocessor took 21.20 ms. Allocated memory is still 200.3 MB. Free memory was 178.9 MB in the beginning and 177.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-11-23 21:56:45,829 INFO L168 Benchmark]: RCFGBuilder took 285.19 ms. Allocated memory is still 200.3 MB. Free memory was 177.1 MB in the beginning and 163.8 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2019-11-23 21:56:45,831 INFO L168 Benchmark]: TraceAbstraction took 869.83 ms. Allocated memory is still 200.3 MB. Free memory was 163.8 MB in the beginning and 117.4 MB in the end (delta: 46.4 MB). Peak memory consumption was 46.4 MB. Max. memory is 7.1 GB. [2019-11-23 21:56:45,848 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 136.8 MB. Free memory was 118.8 MB in the beginning and 118.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 251.40 ms. Allocated memory is still 136.8 MB. Free memory was 100.3 MB in the beginning and 90.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 113.18 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 90.4 MB in the beginning and 178.9 MB in the end (delta: -88.4 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.20 ms. Allocated memory is still 200.3 MB. Free memory was 178.9 MB in the beginning and 177.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 285.19 ms. Allocated memory is still 200.3 MB. Free memory was 177.1 MB in the beginning and 163.8 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 869.83 ms. Allocated memory is still 200.3 MB. Free memory was 163.8 MB in the beginning and 117.4 MB in the end (delta: 46.4 MB). Peak memory consumption was 46.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 35]: 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: 7]: Loop Invariant Derived loop invariant: (!(0 == \result) && p2 == p1) && p2 == p1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Result: SAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 9 SDtfs, 4 SDslu, 7 SDs, 0 SdLazy, 16 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 6 NumberOfFragments, 13 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 445 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...