/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/loop-invgen/id_trans.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 04:30:55,459 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 04:30:55,462 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 04:30:55,513 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 04:30:55,550 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 04:30:55,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 04:30:55,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 04:30:55,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 04:30:55,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 04:30:55,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 04:30:55,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 04:30:55,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 04:30:55,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 04:30:55,578 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 04:30:55,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 04:30:55,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 04:30:55,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 04:30:55,607 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 04:30:55,657 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 04:30:55,657 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 04:30:55,661 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 04:30:55,661 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 04:30:55,661 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 04:30:55,661 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 04:30:55,662 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 04:30:55,662 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 04:30:55,662 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 04:30:55,662 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 04:30:55,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 04:30:55,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 04:30:55,664 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 04:30:55,664 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 04:30:55,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 04:30:55,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 04:30:55,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 04:30:55,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 04:30:55,665 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 04:30:55,665 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 04:30:55,666 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 04:30:55,666 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 04:30:55,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 04:30:55,666 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 04:30:55,667 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 04:30:55,667 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 04:30:56,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 04:30:56,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 04:30:56,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 04:30:56,079 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 04:30:56,080 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 04:30:56,081 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/id_trans.i [2020-12-22 04:30:56,164 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c91a490fd/b35c1e9f906840c09c61ea6a578bf2dc/FLAG13875a727 [2020-12-22 04:30:56,829 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 04:30:56,830 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/id_trans.i [2020-12-22 04:30:56,837 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c91a490fd/b35c1e9f906840c09c61ea6a578bf2dc/FLAG13875a727 [2020-12-22 04:30:57,178 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c91a490fd/b35c1e9f906840c09c61ea6a578bf2dc [2020-12-22 04:30:57,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 04:30:57,186 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 04:30:57,190 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 04:30:57,190 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 04:30:57,195 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 04:30:57,197 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:30:57" (1/1) ... [2020-12-22 04:30:57,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6acdfeaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:30:57, skipping insertion in model container [2020-12-22 04:30:57,199 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:30:57" (1/1) ... [2020-12-22 04:30:57,208 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 04:30:57,226 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 04:30:57,420 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/id_trans.i[893,906] [2020-12-22 04:30:57,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:30:57,446 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 04:30:57,461 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/id_trans.i[893,906] [2020-12-22 04:30:57,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:30:57,484 INFO L208 MainTranslator]: Completed translation [2020-12-22 04:30:57,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:30:57 WrapperNode [2020-12-22 04:30:57,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 04:30:57,486 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 04:30:57,486 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 04:30:57,486 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 04:30:57,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:30:57" (1/1) ... [2020-12-22 04:30:57,503 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:30:57" (1/1) ... [2020-12-22 04:30:57,525 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 04:30:57,526 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 04:30:57,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 04:30:57,526 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 04:30:57,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:30:57" (1/1) ... [2020-12-22 04:30:57,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:30:57" (1/1) ... [2020-12-22 04:30:57,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:30:57" (1/1) ... [2020-12-22 04:30:57,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:30:57" (1/1) ... [2020-12-22 04:30:57,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:30:57" (1/1) ... [2020-12-22 04:30:57,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:30:57" (1/1) ... [2020-12-22 04:30:57,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:30:57" (1/1) ... [2020-12-22 04:30:57,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 04:30:57,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 04:30:57,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 04:30:57,551 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 04:30:57,552 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:30:57" (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 [2020-12-22 04:30:57,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 04:30:57,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 04:30:57,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 04:30:57,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 04:30:57,958 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 04:30:57,958 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2020-12-22 04:30:57,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:30:57 BoogieIcfgContainer [2020-12-22 04:30:57,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 04:30:57,963 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 04:30:57,963 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 04:30:57,967 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 04:30:57,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:30:57" (1/3) ... [2020-12-22 04:30:57,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1daa3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:30:57, skipping insertion in model container [2020-12-22 04:30:57,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:30:57" (2/3) ... [2020-12-22 04:30:57,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1daa3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:30:57, skipping insertion in model container [2020-12-22 04:30:57,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:30:57" (3/3) ... [2020-12-22 04:30:57,971 INFO L111 eAbstractionObserver]: Analyzing ICFG id_trans.i [2020-12-22 04:30:57,980 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 04:30:57,988 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-12-22 04:30:58,064 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-22 04:30:58,120 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 04:30:58,120 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 04:30:58,121 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 04:30:58,121 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 04:30:58,121 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 04:30:58,121 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 04:30:58,121 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 04:30:58,122 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 04:30:58,138 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-12-22 04:30:58,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 04:30:58,143 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:30:58,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 04:30:58,144 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:30:58,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:30:58,151 INFO L82 PathProgramCache]: Analyzing trace with hash 889574253, now seen corresponding path program 1 times [2020-12-22 04:30:58,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:30:58,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522441415] [2020-12-22 04:30:58,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:30:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:30:58,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:30:58,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522441415] [2020-12-22 04:30:58,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:30:58,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 04:30:58,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18370046] [2020-12-22 04:30:58,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 04:30:58,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:30:58,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 04:30:58,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 04:30:58,417 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2020-12-22 04:30:58,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:30:58,566 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2020-12-22 04:30:58,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 04:30:58,568 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-22 04:30:58,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:30:58,582 INFO L225 Difference]: With dead ends: 49 [2020-12-22 04:30:58,582 INFO L226 Difference]: Without dead ends: 17 [2020-12-22 04:30:58,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:30:58,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-22 04:30:58,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2020-12-22 04:30:58,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-22 04:30:58,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-12-22 04:30:58,624 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 6 [2020-12-22 04:30:58,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:30:58,624 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-12-22 04:30:58,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 04:30:58,625 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-12-22 04:30:58,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 04:30:58,625 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:30:58,626 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:30:58,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 04:30:58,628 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:30:58,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:30:58,632 INFO L82 PathProgramCache]: Analyzing trace with hash 182520880, now seen corresponding path program 1 times [2020-12-22 04:30:58,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:30:58,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566125362] [2020-12-22 04:30:58,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:30:58,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:30:58,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:30:58,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566125362] [2020-12-22 04:30:58,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:30:58,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 04:30:58,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478973592] [2020-12-22 04:30:58,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 04:30:58,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:30:58,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 04:30:58,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 04:30:58,767 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 4 states. [2020-12-22 04:30:58,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:30:58,839 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2020-12-22 04:30:58,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 04:30:58,840 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-22 04:30:58,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:30:58,841 INFO L225 Difference]: With dead ends: 17 [2020-12-22 04:30:58,841 INFO L226 Difference]: Without dead ends: 15 [2020-12-22 04:30:58,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:30:58,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-12-22 04:30:58,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2020-12-22 04:30:58,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-12-22 04:30:58,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-12-22 04:30:58,847 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 8 [2020-12-22 04:30:58,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:30:58,847 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-12-22 04:30:58,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 04:30:58,848 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-12-22 04:30:58,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 04:30:58,848 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:30:58,849 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:30:58,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 04:30:58,849 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:30:58,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:30:58,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1729194902, now seen corresponding path program 1 times [2020-12-22 04:30:58,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:30:58,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211546752] [2020-12-22 04:30:58,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:30:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 04:30:58,884 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 04:30:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 04:30:58,938 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 04:30:58,960 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 04:30:58,961 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 04:30:58,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 04:30:58,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 04:30:58 BoogieIcfgContainer [2020-12-22 04:30:58,988 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 04:30:58,989 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 04:30:58,989 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 04:30:58,989 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 04:30:58,990 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:30:57" (3/4) ... [2020-12-22 04:30:58,992 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 04:30:59,054 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/loop-invgen/id_trans.i-witness.graphml [2020-12-22 04:30:59,054 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 04:30:59,056 INFO L168 Benchmark]: Toolchain (without parser) took 1868.78 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 94.1 MB in the end (delta: 32.1 MB). Peak memory consumption was 31.5 MB. Max. memory is 8.0 GB. [2020-12-22 04:30:59,057 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 122.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 04:30:59,058 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.37 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 115.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 04:30:59,063 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.62 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 114.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 04:30:59,065 INFO L168 Benchmark]: Boogie Preprocessor took 23.60 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 113.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 04:30:59,065 INFO L168 Benchmark]: RCFGBuilder took 410.22 ms. Allocated memory is still 151.0 MB. Free memory was 113.0 MB in the beginning and 100.0 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-12-22 04:30:59,068 INFO L168 Benchmark]: TraceAbstraction took 1025.76 ms. Allocated memory is still 151.0 MB. Free memory was 99.5 MB in the beginning and 96.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.2 MB. Max. memory is 8.0 GB. [2020-12-22 04:30:59,069 INFO L168 Benchmark]: Witness Printer took 65.05 ms. Allocated memory is still 151.0 MB. Free memory was 96.2 MB in the beginning and 94.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 04:30:59,078 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 122.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 295.37 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 115.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 39.62 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 114.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 23.60 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 113.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 410.22 ms. Allocated memory is still 151.0 MB. Free memory was 113.0 MB in the beginning and 100.0 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1025.76 ms. Allocated memory is still 151.0 MB. Free memory was 99.5 MB in the beginning and 96.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.2 MB. Max. memory is 8.0 GB. * Witness Printer took 65.05 ms. Allocated memory is still 151.0 MB. Free memory was 96.2 MB in the beginning and 94.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L25] int idBitLength, material_length, nlen; [L26] int j, k; [L27] nlen = __VERIFIER_nondet_int() [L28] idBitLength = __VERIFIER_nondet_int() [L29] material_length = __VERIFIER_nondet_int() [L30] COND FALSE !(!( nlen == idBitLength / 32 )) [L31] j = 0 [L31] COND TRUE (j < idBitLength / 8) && (j < material_length) [L18] COND FALSE !(!(cond)) [L18] COND FALSE !(!(cond)) [L18] COND FALSE !(!(cond)) [L18] COND TRUE !(cond) [L19] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 25 SDslu, 20 SDs, 0 SdLazy, 29 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 148 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...