/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/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:21:42,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:21:42,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:21:42,194 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-06 21:21:42,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:21:42,223 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:21:42,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:21:42,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:21:42,230 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:21:42,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:21:42,234 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:21:42,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:21:42,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:21:42,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:21:42,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:21:42,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:21:42,250 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 21:21:42,261 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:21:42,265 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:21:42,266 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:21:42,267 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 [2019-11-06 21:21:42,280 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:21:42,281 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:21:42,282 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:21:42,282 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:21:42,282 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:21:42,282 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:21:42,283 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:21:42,283 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:21:42,283 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:21:42,283 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:21:42,283 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:21:42,284 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:21:42,284 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:21:42,284 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:21:42,284 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:21:42,284 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:21:42,285 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:21:42,285 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:21:42,285 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:21:42,285 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:21:42,285 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:21:42,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:21:42,286 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:21:42,286 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:21:42,286 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:21:42,286 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:21:42,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:21:42,287 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:21:42,287 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:21:42,616 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:21:42,628 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:21:42,631 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:21:42,633 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:21:42,633 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:21:42,634 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2019-11-06 21:21:42,705 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ad45a1dd/c874ffa47cc64ef5bc504880a5fe11c9/FLAG6c1a078ca [2019-11-06 21:21:43,245 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:21:43,246 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2019-11-06 21:21:43,264 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ad45a1dd/c874ffa47cc64ef5bc504880a5fe11c9/FLAG6c1a078ca [2019-11-06 21:21:43,535 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ad45a1dd/c874ffa47cc64ef5bc504880a5fe11c9 [2019-11-06 21:21:43,546 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:21:43,547 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:21:43,548 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:21:43,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:21:43,552 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:21:43,553 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:21:43" (1/1) ... [2019-11-06 21:21:43,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5de52ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:21:43, skipping insertion in model container [2019-11-06 21:21:43,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:21:43" (1/1) ... [2019-11-06 21:21:43,564 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:21:43,623 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:21:43,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:21:44,048 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:21:44,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:21:44,209 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:21:44,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:21:44 WrapperNode [2019-11-06 21:21:44,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:21:44,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:21:44,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:21:44,211 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:21:44,228 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:21:44" (1/1) ... [2019-11-06 21:21:44,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:21:44" (1/1) ... [2019-11-06 21:21:44,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:21:44" (1/1) ... [2019-11-06 21:21:44,248 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:21:44" (1/1) ... [2019-11-06 21:21:44,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:21:44" (1/1) ... [2019-11-06 21:21:44,301 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:21:44" (1/1) ... [2019-11-06 21:21:44,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:21:44" (1/1) ... [2019-11-06 21:21:44,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:21:44,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:21:44,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:21:44,315 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:21:44,316 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:21:44" (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 [2019-11-06 21:21:44,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:21:44,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:21:44,390 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:21:44,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:21:44,391 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2019-11-06 21:21:44,391 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2019-11-06 21:21:44,392 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:21:44,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 21:21:44,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 21:21:44,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 21:21:44,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 21:21:44,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 21:21:44,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 21:21:44,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:21:44,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:21:44,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 21:21:44,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 21:21:45,428 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:21:45,428 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-06 21:21:45,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:21:45 BoogieIcfgContainer [2019-11-06 21:21:45,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:21:45,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:21:45,431 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:21:45,434 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:21:45,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:21:43" (1/3) ... [2019-11-06 21:21:45,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e391d28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:21:45, skipping insertion in model container [2019-11-06 21:21:45,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:21:44" (2/3) ... [2019-11-06 21:21:45,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e391d28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:21:45, skipping insertion in model container [2019-11-06 21:21:45,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:21:45" (3/3) ... [2019-11-06 21:21:45,438 INFO L109 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lhb-reducer.c [2019-11-06 21:21:45,448 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:21:45,456 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:21:45,467 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:21:45,492 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:21:45,492 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:21:45,492 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:21:45,493 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:21:45,493 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:21:45,493 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:21:45,493 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:21:45,493 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:21:45,512 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2019-11-06 21:21:45,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-11-06 21:21:45,519 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:21:45,520 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:21:45,522 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:21:45,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:21:45,528 INFO L82 PathProgramCache]: Analyzing trace with hash 377540282, now seen corresponding path program 1 times [2019-11-06 21:21:45,537 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:21:45,538 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766463966] [2019-11-06 21:21:45,538 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:21:45,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:21:46,778 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2019-11-06 21:21:46,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:21:46,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:21:46,856 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766463966] [2019-11-06 21:21:46,857 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:21:46,858 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2019-11-06 21:21:46,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293776080] [2019-11-06 21:21:46,864 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-06 21:21:46,864 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:21:46,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-06 21:21:46,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2019-11-06 21:21:46,881 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 20 states. [2019-11-06 21:21:47,289 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2019-11-06 21:21:48,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:21:48,421 INFO L93 Difference]: Finished difference Result 92 states and 136 transitions. [2019-11-06 21:21:48,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-06 21:21:48,423 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 48 [2019-11-06 21:21:48,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:21:48,434 INFO L225 Difference]: With dead ends: 92 [2019-11-06 21:21:48,434 INFO L226 Difference]: Without dead ends: 57 [2019-11-06 21:21:48,438 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2019-11-06 21:21:48,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-11-06 21:21:48,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2019-11-06 21:21:48,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-11-06 21:21:48,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2019-11-06 21:21:48,485 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 48 [2019-11-06 21:21:48,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:21:48,486 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2019-11-06 21:21:48,486 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-06 21:21:48,486 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2019-11-06 21:21:48,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-06 21:21:48,488 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:21:48,489 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:21:48,489 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:21:48,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:21:48,490 INFO L82 PathProgramCache]: Analyzing trace with hash -849330057, now seen corresponding path program 1 times [2019-11-06 21:21:48,490 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:21:48,490 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575011723] [2019-11-06 21:21:48,491 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:21:48,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:21:49,303 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2019-11-06 21:21:49,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:21:49,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:21:49,324 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575011723] [2019-11-06 21:21:49,324 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925755539] [2019-11-06 21:21:49,324 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:21:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:21:49,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-06 21:21:49,570 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:21:49,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:21:49,675 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 21:21:49,675 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 14] total 22 [2019-11-06 21:21:49,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311997031] [2019-11-06 21:21:49,679 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-06 21:21:49,680 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:21:49,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-06 21:21:49,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2019-11-06 21:21:49,681 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 22 states. [2019-11-06 21:21:49,999 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2019-11-06 21:21:50,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:21:50,992 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2019-11-06 21:21:50,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-06 21:21:50,993 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 53 [2019-11-06 21:21:50,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:21:50,995 INFO L225 Difference]: With dead ends: 65 [2019-11-06 21:21:50,995 INFO L226 Difference]: Without dead ends: 62 [2019-11-06 21:21:50,996 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=84, Invalid=728, Unknown=0, NotChecked=0, Total=812 [2019-11-06 21:21:50,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2019-11-06 21:21:51,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 59. [2019-11-06 21:21:51,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-11-06 21:21:51,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2019-11-06 21:21:51,005 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 53 [2019-11-06 21:21:51,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:21:51,006 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2019-11-06 21:21:51,006 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-06 21:21:51,006 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2019-11-06 21:21:51,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-06 21:21:51,008 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:21:51,008 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:21:51,212 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:21:51,215 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:21:51,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:21:51,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1610392358, now seen corresponding path program 2 times [2019-11-06 21:21:51,217 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:21:51,217 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273291640] [2019-11-06 21:21:51,217 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:21:51,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:21:51,871 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2019-11-06 21:21:51,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:21:51,890 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:21:51,890 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273291640] [2019-11-06 21:21:51,891 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978970571] [2019-11-06 21:21:51,891 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:21:52,806 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-06 21:21:52,807 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-06 21:21:52,812 INFO L256 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 27 conjunts are in the unsatisfiable core [2019-11-06 21:21:52,819 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:21:52,879 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:21:52,879 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 21:21:52,879 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 15] total 23 [2019-11-06 21:21:52,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703907095] [2019-11-06 21:21:52,880 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-11-06 21:21:52,881 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:21:52,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-11-06 21:21:52,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2019-11-06 21:21:52,882 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 23 states. [2019-11-06 21:21:53,172 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2019-11-06 21:21:54,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:21:54,358 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2019-11-06 21:21:54,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-06 21:21:54,359 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 58 [2019-11-06 21:21:54,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:21:54,362 INFO L225 Difference]: With dead ends: 70 [2019-11-06 21:21:54,363 INFO L226 Difference]: Without dead ends: 67 [2019-11-06 21:21:54,364 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=90, Invalid=840, Unknown=0, NotChecked=0, Total=930 [2019-11-06 21:21:54,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2019-11-06 21:21:54,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 64. [2019-11-06 21:21:54,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2019-11-06 21:21:54,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2019-11-06 21:21:54,373 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 58 [2019-11-06 21:21:54,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:21:54,374 INFO L462 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2019-11-06 21:21:54,374 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-11-06 21:21:54,374 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2019-11-06 21:21:54,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-11-06 21:21:54,376 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:21:54,376 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:21:54,582 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:21:54,582 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:21:54,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:21:54,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1809942103, now seen corresponding path program 3 times [2019-11-06 21:21:54,584 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:21:54,584 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697554153] [2019-11-06 21:21:54,585 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:21:54,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:21:55,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:21:55,265 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:21:55,265 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697554153] [2019-11-06 21:21:55,265 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128161458] [2019-11-06 21:21:55,266 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:21:56,068 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-06 21:21:56,069 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-06 21:21:56,072 INFO L256 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 34 conjunts are in the unsatisfiable core [2019-11-06 21:21:56,078 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:21:56,289 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:21:56,344 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:21:56,345 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 39 [2019-11-06 21:21:56,346 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:21:56,350 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-06 21:21:56,350 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-06 21:21:56,397 INFO L567 ElimStorePlain]: treesize reduction 5, result has 84.8 percent of original size [2019-11-06 21:21:56,397 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 21:21:56,398 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:82, output treesize:28 [2019-11-06 21:21:56,443 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:21:56,556 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-06 21:21:56,556 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 21:21:56,557 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 9] total 30 [2019-11-06 21:21:56,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996000132] [2019-11-06 21:21:56,558 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2019-11-06 21:21:56,558 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:21:56,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2019-11-06 21:21:56,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=791, Unknown=0, NotChecked=0, Total=870 [2019-11-06 21:21:56,559 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 30 states. [2019-11-06 21:21:56,867 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2019-11-06 21:22:00,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:22:00,083 INFO L93 Difference]: Finished difference Result 72 states and 73 transitions. [2019-11-06 21:22:00,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-11-06 21:22:00,084 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 63 [2019-11-06 21:22:00,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:22:00,085 INFO L225 Difference]: With dead ends: 72 [2019-11-06 21:22:00,085 INFO L226 Difference]: Without dead ends: 0 [2019-11-06 21:22:00,088 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=331, Invalid=2749, Unknown=0, NotChecked=0, Total=3080 [2019-11-06 21:22:00,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-06 21:22:00,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-06 21:22:00,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-06 21:22:00,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-06 21:22:00,089 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2019-11-06 21:22:00,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:22:00,089 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-06 21:22:00,089 INFO L463 AbstractCegarLoop]: Interpolant automaton has 30 states. [2019-11-06 21:22:00,090 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-06 21:22:00,090 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-06 21:22:00,296 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:22:00,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-06 21:22:00,467 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 33 [2019-11-06 21:22:00,572 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2019-11-06 21:22:00,747 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 48 [2019-11-06 21:22:00,750 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-11-06 21:22:00,750 INFO L439 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |#t~string46.offset| |old(#t~string46.offset)|) (= |#t~string48.base| |old(#t~string48.base)|) (= ~__tmp_1075_1~0 |old(~__tmp_1075_1~0)|) (= |#t~string50.offset| |old(#t~string50.offset)|) (= |#t~string48.offset| |old(#t~string48.offset)|) (= |#t~string50.base| |old(#t~string50.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#t~string56.offset| |old(#t~string56.offset)|) (= |#t~string60.offset| |old(#t~string60.offset)|) (= |#t~string58.base| |old(#t~string58.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string56.base| |old(#t~string56.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |#t~string44.offset| |old(#t~string44.offset)|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#t~string54.offset| |old(#t~string54.offset)|) (= |old(#length)| |#length|) (= |#t~string62.base| |old(#t~string62.base)|) (= |#t~string46.base| |old(#t~string46.base)|) (= ~__return_main~0 |old(~__return_main~0)|) (= |#t~string1.offset| |old(#t~string1.offset)|) (= ~Id_MCDC_93~0 |old(~Id_MCDC_93~0)|) (= ~__tmp_1075_2~0.base |old(~__tmp_1075_2~0.base)|) (= |#t~string58.offset| |old(#t~string58.offset)|) (= |#t~string52.offset| |old(#t~string52.offset)|) (= |#valid| |old(#valid)|) (= ~__tmp_1075_0~0 |old(~__tmp_1075_0~0)|) (= |#t~string54.base| |old(#t~string54.base)|) (= |#t~string60.base| |old(#t~string60.base)|) (= |#t~string44.base| |old(#t~string44.base)|) (= |#t~string52.base| |old(#t~string52.base)|) (= |#t~string62.offset| |old(#t~string62.offset)|) (= ~__tmp_1075_2~0.offset |old(~__tmp_1075_2~0.offset)|)) [2019-11-06 21:22:00,751 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-06 21:22:00,751 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-06 21:22:00,751 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~Id_MCDC_93~0 9) (< 0 (+ (div ~Id_MCDC_93~0 4294967296) 1))) [2019-11-06 21:22:00,751 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-06 21:22:00,751 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-06 21:22:00,751 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 134 634) no Hoare annotation was computed. [2019-11-06 21:22:00,752 INFO L443 ceAbstractionStarter]: For program point L275(lines 275 568) no Hoare annotation was computed. [2019-11-06 21:22:00,752 INFO L443 ceAbstractionStarter]: For program point L242(lines 242 586) no Hoare annotation was computed. [2019-11-06 21:22:00,752 INFO L443 ceAbstractionStarter]: For program point L465(line 465) no Hoare annotation was computed. [2019-11-06 21:22:00,752 INFO L443 ceAbstractionStarter]: For program point L234(lines 234 592) no Hoare annotation was computed. [2019-11-06 21:22:00,752 INFO L443 ceAbstractionStarter]: For program point L284(lines 284 563) no Hoare annotation was computed. [2019-11-06 21:22:00,752 INFO L443 ceAbstractionStarter]: For program point L301(lines 301 551) no Hoare annotation was computed. [2019-11-06 21:22:00,752 INFO L443 ceAbstractionStarter]: For program point L268(lines 268 569) no Hoare annotation was computed. [2019-11-06 21:22:00,752 INFO L443 ceAbstractionStarter]: For program point L260(lines 260 575) no Hoare annotation was computed. [2019-11-06 21:22:00,753 INFO L443 ceAbstractionStarter]: For program point L310(lines 310 546) no Hoare annotation was computed. [2019-11-06 21:22:00,753 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 134 634) no Hoare annotation was computed. [2019-11-06 21:22:00,753 INFO L443 ceAbstractionStarter]: For program point L327(lines 327 534) no Hoare annotation was computed. [2019-11-06 21:22:00,753 INFO L443 ceAbstractionStarter]: For program point L294(lines 294 552) no Hoare annotation was computed. [2019-11-06 21:22:00,753 INFO L443 ceAbstractionStarter]: For program point L162(lines 162 633) no Hoare annotation was computed. [2019-11-06 21:22:00,753 INFO L443 ceAbstractionStarter]: For program point L286(lines 286 558) no Hoare annotation was computed. [2019-11-06 21:22:00,754 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 134 634) the Hoare annotation is: (or (and (= ~__tmp_1075_1~0 |old(~__tmp_1075_1~0)|) (= |old(#length)| |#length|) (= ~Id_MCDC_93~0 |old(~Id_MCDC_93~0)|) (= ~__tmp_1075_2~0.base |old(~__tmp_1075_2~0.base)|) (= |#valid| |old(#valid)|) (= ~__tmp_1075_0~0 |old(~__tmp_1075_0~0)|) (= ~__tmp_1075_2~0.offset |old(~__tmp_1075_2~0.offset)|)) (not (<= |old(~Id_MCDC_93~0)| 9)) (not (< 0 (+ (div |old(~Id_MCDC_93~0)| 4294967296) 1)))) [2019-11-06 21:22:00,754 INFO L443 ceAbstractionStarter]: For program point L336(lines 336 529) no Hoare annotation was computed. [2019-11-06 21:22:00,754 INFO L443 ceAbstractionStarter]: For program point L353(lines 353 517) no Hoare annotation was computed. [2019-11-06 21:22:00,754 INFO L443 ceAbstractionStarter]: For program point L320(lines 320 535) no Hoare annotation was computed. [2019-11-06 21:22:00,754 INFO L443 ceAbstractionStarter]: For program point L312(lines 312 541) no Hoare annotation was computed. [2019-11-06 21:22:00,754 INFO L443 ceAbstractionStarter]: For program point L180(lines 180 631) no Hoare annotation was computed. [2019-11-06 21:22:00,754 INFO L443 ceAbstractionStarter]: For program point L362(lines 362 512) no Hoare annotation was computed. [2019-11-06 21:22:00,755 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 465) no Hoare annotation was computed. [2019-11-06 21:22:00,755 INFO L443 ceAbstractionStarter]: For program point L197(lines 197 619) no Hoare annotation was computed. [2019-11-06 21:22:00,755 INFO L443 ceAbstractionStarter]: For program point L379(lines 379 500) no Hoare annotation was computed. [2019-11-06 21:22:00,755 INFO L443 ceAbstractionStarter]: For program point L346(lines 346 518) no Hoare annotation was computed. [2019-11-06 21:22:00,755 INFO L443 ceAbstractionStarter]: For program point L338(lines 338 524) no Hoare annotation was computed. [2019-11-06 21:22:00,755 INFO L443 ceAbstractionStarter]: For program point L206(lines 206 614) no Hoare annotation was computed. [2019-11-06 21:22:00,755 INFO L443 ceAbstractionStarter]: For program point L421(lines 421 478) no Hoare annotation was computed. [2019-11-06 21:22:00,756 INFO L443 ceAbstractionStarter]: For program point L388(lines 388 495) no Hoare annotation was computed. [2019-11-06 21:22:00,756 INFO L443 ceAbstractionStarter]: For program point L223(lines 223 602) no Hoare annotation was computed. [2019-11-06 21:22:00,756 INFO L443 ceAbstractionStarter]: For program point L190(lines 190 620) no Hoare annotation was computed. [2019-11-06 21:22:00,756 INFO L439 ceAbstractionStarter]: At program point L446(lines 406 479) the Hoare annotation is: (let ((.cse0 (mod (+ ~Id_MCDC_93~0 4294967295) 4294967296))) (let ((.cse1 (< .cse0 42)) (.cse2 (= |main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 0)) (.cse4 (= 0 (select (select |#memory_int| |main_~#Id_MCDC_89__Id_MCDC_95~0.base|) (+ |main_~#Id_MCDC_89__Id_MCDC_95~0.offset| 492))))) (or (not (<= |old(~Id_MCDC_93~0)| 9)) (let ((.cse5 (mod (+ main_~Id_MCDC_89__Id_MCDC_96~0 4294967295) 4294967296))) (let ((.cse3 (* 12 .cse5))) (and (not (= (* 12 .cse0) 492)) .cse1 .cse2 (not (= 492 .cse3)) .cse4 (= .cse3 ~__tmp_1075_2~0.offset) (< .cse5 42)))) (and .cse1 .cse2 .cse4 (<= ~Id_MCDC_93~0 9) (< 0 (+ (div ~Id_MCDC_93~0 4294967296) 1)) (<= main_~Id_MCDC_89__Id_MCDC_96~0 9) (<= 9 main_~Id_MCDC_89__Id_MCDC_96~0)) (not (< 0 (+ (div |old(~Id_MCDC_93~0)| 4294967296) 1)))))) [2019-11-06 21:22:00,756 INFO L443 ceAbstractionStarter]: For program point L182(lines 182 626) no Hoare annotation was computed. [2019-11-06 21:22:00,756 INFO L443 ceAbstractionStarter]: For program point L438(lines 438 451) no Hoare annotation was computed. [2019-11-06 21:22:00,757 INFO L443 ceAbstractionStarter]: For program point L405(lines 405 483) no Hoare annotation was computed. [2019-11-06 21:22:00,757 INFO L443 ceAbstractionStarter]: For program point L372(lines 372 501) no Hoare annotation was computed. [2019-11-06 21:22:00,757 INFO L443 ceAbstractionStarter]: For program point L463(lines 463 471) no Hoare annotation was computed. [2019-11-06 21:22:00,757 INFO L443 ceAbstractionStarter]: For program point L364(lines 364 507) no Hoare annotation was computed. [2019-11-06 21:22:00,757 INFO L443 ceAbstractionStarter]: For program point L232(lines 232 597) no Hoare annotation was computed. [2019-11-06 21:22:00,757 INFO L443 ceAbstractionStarter]: For program point L249(lines 249 585) no Hoare annotation was computed. [2019-11-06 21:22:00,757 INFO L443 ceAbstractionStarter]: For program point L216(lines 216 603) no Hoare annotation was computed. [2019-11-06 21:22:00,758 INFO L443 ceAbstractionStarter]: For program point L208(lines 208 609) no Hoare annotation was computed. [2019-11-06 21:22:00,758 INFO L443 ceAbstractionStarter]: For program point L431(lines 431 452) no Hoare annotation was computed. [2019-11-06 21:22:00,758 INFO L443 ceAbstractionStarter]: For program point L398(lines 398 484) no Hoare annotation was computed. [2019-11-06 21:22:00,758 INFO L443 ceAbstractionStarter]: For program point L423(lines 423 473) no Hoare annotation was computed. [2019-11-06 21:22:00,758 INFO L443 ceAbstractionStarter]: For program point L390(lines 390 490) no Hoare annotation was computed. [2019-11-06 21:22:00,758 INFO L443 ceAbstractionStarter]: For program point L258(lines 258 580) no Hoare annotation was computed. [2019-11-06 21:22:00,767 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-06 21:22:00,768 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-06 21:22:00,775 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-06 21:22:00,775 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-06 21:22:00,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:22:00 BoogieIcfgContainer [2019-11-06 21:22:00,779 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-06 21:22:00,781 INFO L168 Benchmark]: Toolchain (without parser) took 17233.39 ms. Allocated memory was 144.7 MB in the beginning and 384.3 MB in the end (delta: 239.6 MB). Free memory was 101.9 MB in the beginning and 342.6 MB in the end (delta: -240.7 MB). Peak memory consumption was 225.3 MB. Max. memory is 7.1 GB. [2019-11-06 21:22:00,782 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 144.7 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-06 21:22:00,783 INFO L168 Benchmark]: CACSL2BoogieTranslator took 662.14 ms. Allocated memory was 144.7 MB in the beginning and 202.9 MB in the end (delta: 58.2 MB). Free memory was 101.6 MB in the beginning and 174.1 MB in the end (delta: -72.5 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2019-11-06 21:22:00,784 INFO L168 Benchmark]: Boogie Preprocessor took 103.84 ms. Allocated memory is still 202.9 MB. Free memory was 174.1 MB in the beginning and 168.5 MB in the end (delta: 5.6 MB). Peak memory consumption was 5.6 MB. Max. memory is 7.1 GB. [2019-11-06 21:22:00,784 INFO L168 Benchmark]: RCFGBuilder took 1114.79 ms. Allocated memory was 202.9 MB in the beginning and 234.4 MB in the end (delta: 31.5 MB). Free memory was 168.5 MB in the beginning and 186.2 MB in the end (delta: -17.7 MB). Peak memory consumption was 86.9 MB. Max. memory is 7.1 GB. [2019-11-06 21:22:00,785 INFO L168 Benchmark]: TraceAbstraction took 15347.88 ms. Allocated memory was 234.4 MB in the beginning and 384.3 MB in the end (delta: 149.9 MB). Free memory was 186.2 MB in the beginning and 342.6 MB in the end (delta: -156.4 MB). Peak memory consumption was 220.0 MB. Max. memory is 7.1 GB. [2019-11-06 21:22:00,790 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 144.7 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 662.14 ms. Allocated memory was 144.7 MB in the beginning and 202.9 MB in the end (delta: 58.2 MB). Free memory was 101.6 MB in the beginning and 174.1 MB in the end (delta: -72.5 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 103.84 ms. Allocated memory is still 202.9 MB. Free memory was 174.1 MB in the beginning and 168.5 MB in the end (delta: 5.6 MB). Peak memory consumption was 5.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1114.79 ms. Allocated memory was 202.9 MB in the beginning and 234.4 MB in the end (delta: 31.5 MB). Free memory was 168.5 MB in the beginning and 186.2 MB in the end (delta: -17.7 MB). Peak memory consumption was 86.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15347.88 ms. Allocated memory was 234.4 MB in the beginning and 384.3 MB in the end (delta: 149.9 MB). Free memory was 186.2 MB in the beginning and 342.6 MB in the end (delta: -156.4 MB). Peak memory consumption was 220.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 465]: 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: 406]: Loop Invariant [2019-11-06 21:22:00,801 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-06 21:22:00,801 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-06 21:22:00,802 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-11-06 21:22:00,802 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((!(\old(Id_MCDC_93) <= 9) || ((((((!(12 * ((Id_MCDC_93 + 4294967295) % 4294967296) == 492) && (Id_MCDC_93 + 4294967295) % 4294967296 < 42) && Id_MCDC_89__Id_MCDC_95 == 0) && !(492 == 12 * ((Id_MCDC_89__Id_MCDC_96 + 4294967295) % 4294967296))) && 0 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492]) && 12 * ((Id_MCDC_89__Id_MCDC_96 + 4294967295) % 4294967296) == __tmp_1075_2) && (Id_MCDC_89__Id_MCDC_96 + 4294967295) % 4294967296 < 42)) || (((((((Id_MCDC_93 + 4294967295) % 4294967296 < 42 && Id_MCDC_89__Id_MCDC_95 == 0) && 0 == unknown-#memory_int-unknown[Id_MCDC_89__Id_MCDC_95][Id_MCDC_89__Id_MCDC_95 + 492]) && Id_MCDC_93 <= 9) && 0 < Id_MCDC_93 / 4294967296 + 1) && Id_MCDC_89__Id_MCDC_96 <= 9) && 9 <= Id_MCDC_89__Id_MCDC_96)) || !(0 < \old(Id_MCDC_93) / 4294967296 + 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 55 locations, 1 error locations. Result: SAFE, OverallTime: 15.2s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 7.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, HoareTripleCheckerStatistics: 76 SDtfs, 349 SDslu, 979 SDs, 0 SdLazy, 4090 SolverSat, 138 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 311 GetRequests, 171 SyntacticMatches, 7 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 5.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred 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, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 10 NumberOfFragments, 255 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 342 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 396 NumberOfCodeBlocks, 391 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 389 ConstructedInterpolants, 0 QuantifiedInterpolants, 191485 SizeOfPredicates, 20 NumberOfNonLiveVariables, 2536 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 13/76 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...