/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/test24-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 22:06:25,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 22:06:25,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 22:06:25,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-09-04 22:06:25,555 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 22:06:25,559 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 22:06:25,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 22:06:25,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 22:06:25,565 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 22:06:25,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 22:06:25,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 22:06:25,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 22:06:25,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 22:06:25,580 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 22:06:25,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 22:06:25,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 22:06:25,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 22:06:25,598 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 22:06:25,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 22:06:25,601 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 22:06:25,602 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 22:06:25,623 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 22:06:25,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 22:06:25,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 22:06:25,625 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 22:06:25,625 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 22:06:25,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 22:06:25,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 22:06:25,626 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 22:06:25,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 22:06:25,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 22:06:25,628 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 22:06:25,628 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 22:06:25,628 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 22:06:25,628 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 22:06:25,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 22:06:25,629 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 22:06:25,629 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 22:06:25,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 22:06:25,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 22:06:25,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 22:06:25,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 22:06:25,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 22:06:25,631 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-09-04 22:06:26,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 22:06:26,080 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 22:06:26,085 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 22:06:26,088 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 22:06:26,089 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 22:06:26,090 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test24-1.c [2020-09-04 22:06:26,173 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2570398dd/744989a57fa746f2a1b0f8188f89feab/FLAGacfdfb20b [2020-09-04 22:06:26,700 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 22:06:26,701 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test24-1.c [2020-09-04 22:06:26,709 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2570398dd/744989a57fa746f2a1b0f8188f89feab/FLAGacfdfb20b [2020-09-04 22:06:27,037 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2570398dd/744989a57fa746f2a1b0f8188f89feab [2020-09-04 22:06:27,052 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 22:06:27,054 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 22:06:27,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 22:06:27,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 22:06:27,060 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 22:06:27,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 10:06:27" (1/1) ... [2020-09-04 22:06:27,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1afef70d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:06:27, skipping insertion in model container [2020-09-04 22:06:27,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 10:06:27" (1/1) ... [2020-09-04 22:06:27,075 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 22:06:27,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 22:06:27,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 22:06:27,342 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 22:06:27,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 22:06:27,383 INFO L208 MainTranslator]: Completed translation [2020-09-04 22:06:27,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:06:27 WrapperNode [2020-09-04 22:06:27,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 22:06:27,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 22:06:27,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 22:06:27,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 22:06:27,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:06:27" (1/1) ... [2020-09-04 22:06:27,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:06:27" (1/1) ... [2020-09-04 22:06:27,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:06:27" (1/1) ... [2020-09-04 22:06:27,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:06:27" (1/1) ... [2020-09-04 22:06:27,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:06:27" (1/1) ... [2020-09-04 22:06:27,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:06:27" (1/1) ... [2020-09-04 22:06:27,499 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:06:27" (1/1) ... [2020-09-04 22:06:27,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 22:06:27,502 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 22:06:27,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 22:06:27,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 22:06:27,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:06:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 22:06:27,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 22:06:27,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 22:06:27,579 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-09-04 22:06:27,579 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 22:06:27,579 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 22:06:27,579 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 22:06:27,580 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-04 22:06:27,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 22:06:27,580 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 22:06:27,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 22:06:27,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 22:06:27,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 22:06:27,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 22:06:27,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 22:06:27,856 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 22:06:27,857 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 22:06:27,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 10:06:27 BoogieIcfgContainer [2020-09-04 22:06:27,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 22:06:27,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 22:06:27,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 22:06:27,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 22:06:27,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 10:06:27" (1/3) ... [2020-09-04 22:06:27,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ea85479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 10:06:27, skipping insertion in model container [2020-09-04 22:06:27,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:06:27" (2/3) ... [2020-09-04 22:06:27,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ea85479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 10:06:27, skipping insertion in model container [2020-09-04 22:06:27,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 10:06:27" (3/3) ... [2020-09-04 22:06:27,873 INFO L109 eAbstractionObserver]: Analyzing ICFG test24-1.c [2020-09-04 22:06:27,886 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 22:06:27,896 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 22:06:27,920 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 22:06:27,949 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 22:06:27,950 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 22:06:27,950 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 22:06:27,950 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 22:06:27,950 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 22:06:27,951 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 22:06:27,951 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 22:06:27,951 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 22:06:27,971 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-09-04 22:06:27,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-04 22:06:27,984 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:06:27,986 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:06:27,986 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:06:27,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:06:27,993 INFO L82 PathProgramCache]: Analyzing trace with hash 606292035, now seen corresponding path program 1 times [2020-09-04 22:06:28,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:06:28,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [882309428] [2020-09-04 22:06:28,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:06:28,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:28,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:06:28,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:28,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 22:06:28,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:28,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:06:28,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [882309428] [2020-09-04 22:06:28,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:06:28,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 22:06:28,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835692127] [2020-09-04 22:06:28,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 22:06:28,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:06:28,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 22:06:28,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 22:06:28,282 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 3 states. [2020-09-04 22:06:28,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:06:28,445 INFO L93 Difference]: Finished difference Result 73 states and 76 transitions. [2020-09-04 22:06:28,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 22:06:28,448 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-09-04 22:06:28,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:06:28,468 INFO L225 Difference]: With dead ends: 73 [2020-09-04 22:06:28,468 INFO L226 Difference]: Without dead ends: 41 [2020-09-04 22:06:28,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 22:06:28,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-04 22:06:28,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-09-04 22:06:28,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-04 22:06:28,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-09-04 22:06:28,531 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 34 [2020-09-04 22:06:28,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:06:28,532 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-09-04 22:06:28,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 22:06:28,532 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-09-04 22:06:28,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-04 22:06:28,534 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:06:28,534 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:06:28,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 22:06:28,535 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:06:28,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:06:28,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1986388344, now seen corresponding path program 1 times [2020-09-04 22:06:28,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:06:28,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [609121734] [2020-09-04 22:06:28,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:06:28,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:28,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:06:28,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:28,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-04 22:06:28,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:28,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:06:28,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [609121734] [2020-09-04 22:06:28,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:06:28,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 22:06:28,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527198492] [2020-09-04 22:06:28,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 22:06:28,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:06:28,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 22:06:28,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-04 22:06:28,829 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 9 states. [2020-09-04 22:06:29,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:06:29,186 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2020-09-04 22:06:29,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-04 22:06:29,187 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2020-09-04 22:06:29,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:06:29,189 INFO L225 Difference]: With dead ends: 60 [2020-09-04 22:06:29,189 INFO L226 Difference]: Without dead ends: 46 [2020-09-04 22:06:29,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-09-04 22:06:29,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-04 22:06:29,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2020-09-04 22:06:29,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-04 22:06:29,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2020-09-04 22:06:29,204 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 36 [2020-09-04 22:06:29,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:06:29,204 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2020-09-04 22:06:29,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 22:06:29,205 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2020-09-04 22:06:29,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-04 22:06:29,206 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:06:29,206 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-04 22:06:29,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 22:06:29,207 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:06:29,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:06:29,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1471095088, now seen corresponding path program 1 times [2020-09-04 22:06:29,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:06:29,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664839724] [2020-09-04 22:06:29,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:06:29,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:29,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:06:29,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:29,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-04 22:06:29,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:29,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:06:29,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [664839724] [2020-09-04 22:06:29,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:06:29,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-04 22:06:29,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827295970] [2020-09-04 22:06:29,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-04 22:06:29,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:06:29,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-04 22:06:29,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-09-04 22:06:29,787 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 15 states. [2020-09-04 22:06:30,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:06:30,538 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2020-09-04 22:06:30,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-04 22:06:30,542 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 42 [2020-09-04 22:06:30,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:06:30,543 INFO L225 Difference]: With dead ends: 43 [2020-09-04 22:06:30,543 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 22:06:30,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=138, Invalid=618, Unknown=0, NotChecked=0, Total=756 [2020-09-04 22:06:30,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 22:06:30,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 22:06:30,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 22:06:30,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 22:06:30,548 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2020-09-04 22:06:30,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:06:30,548 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 22:06:30,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-04 22:06:30,548 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 22:06:30,549 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 22:06:30,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 22:06:30,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 22:06:31,304 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 22:06:31,304 INFO L271 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-09-04 22:06:31,304 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-04 22:06:31,305 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-04 22:06:31,305 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-09-04 22:06:31,305 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-09-04 22:06:31,305 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 22:06:31,305 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 22:06:31,305 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-09-04 22:06:31,306 INFO L264 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (<= (+ main_~i~0 1) .cse0) (= |main_~#ad1~0.offset| 0) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* .cse0 8) |main_~#ad1~0.offset|)) .cse0))) [2020-09-04 22:06:31,306 INFO L264 CegarLoopResult]: At program point L27-1(line 27) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (<= (+ main_~i~0 1) .cse0) (= |main_~#ad1~0.offset| 0) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* .cse0 8) |main_~#ad1~0.offset|)) .cse0))) [2020-09-04 22:06:31,306 INFO L264 CegarLoopResult]: At program point L27-2(line 27) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (= |main_~#ad1~0.offset| 0) (<= (* 8 main_~i~0) (* 8 .cse0)) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* .cse0 8) |main_~#ad1~0.offset|)) .cse0))) [2020-09-04 22:06:31,307 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 14 38) the Hoare annotation is: true [2020-09-04 22:06:31,307 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (= |main_~#ad1~0.offset| 0) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base)) [2020-09-04 22:06:31,307 INFO L264 CegarLoopResult]: At program point L23-1(line 23) the Hoare annotation is: (and (= |main_~#ad1~0.offset| 0) (= main_~i~0 (select (select |#memory_int| main_~ad2~0.base) (+ (* main_~i~0 8) main_~ad2~0.offset))) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base)) [2020-09-04 22:06:31,307 INFO L264 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |main_~#ad1~0.offset| 0) [2020-09-04 22:06:31,308 INFO L264 CegarLoopResult]: At program point L19-1(line 19) the Hoare annotation is: (= |main_~#ad1~0.offset| 0) [2020-09-04 22:06:31,308 INFO L264 CegarLoopResult]: At program point L19-2(line 19) the Hoare annotation is: (= |main_~#ad1~0.offset| 0) [2020-09-04 22:06:31,308 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (= |main_~#ad1~0.offset| 0) [2020-09-04 22:06:31,308 INFO L271 CegarLoopResult]: At program point L16-1(line 16) the Hoare annotation is: true [2020-09-04 22:06:31,308 INFO L271 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: true [2020-09-04 22:06:31,308 INFO L264 CegarLoopResult]: At program point L16-3(line 16) the Hoare annotation is: false [2020-09-04 22:06:31,309 INFO L264 CegarLoopResult]: At program point L16-4(line 16) the Hoare annotation is: false [2020-09-04 22:06:31,309 INFO L264 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: false [2020-09-04 22:06:31,309 INFO L264 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |main_~#ad1~0.base|)) (.cse1 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (= |main_~#ad1~0.offset| 0) (<= 1 |main_#t~ret5|) (= main_~i~0 (select .cse0 (+ (* main_~i~0 8) |main_~#ad1~0.offset|))) (<= (* 8 main_~i~0) (* 8 .cse1)) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= (select .cse0 (+ (* .cse1 8) |main_~#ad1~0.offset|)) .cse1))) [2020-09-04 22:06:31,309 INFO L264 CegarLoopResult]: At program point L29-1(lines 29 31) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |main_~#ad1~0.base|)) (.cse1 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (= |main_~#ad1~0.offset| 0) (<= 1 |main_#t~ret5|) (= main_~i~0 (select .cse0 (+ (* main_~i~0 8) |main_~#ad1~0.offset|))) (<= (* 8 main_~i~0) (* 8 .cse1)) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= (select .cse0 (+ (* .cse1 8) |main_~#ad1~0.offset|)) .cse1))) [2020-09-04 22:06:31,310 INFO L264 CegarLoopResult]: At program point L29-2(line 29) the Hoare annotation is: false [2020-09-04 22:06:31,310 INFO L271 CegarLoopResult]: At program point L29-3(line 29) the Hoare annotation is: true [2020-09-04 22:06:31,310 INFO L264 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (= |main_~#ad1~0.offset| 0) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* .cse0 8) |main_~#ad1~0.offset|)) .cse0) (= main_~i~0 .cse0))) [2020-09-04 22:06:31,310 INFO L264 CegarLoopResult]: At program point L25-1(line 25) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (= |main_~#ad1~0.offset| 0) (<= |main_#t~mem2| (+ .cse0 9)) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* .cse0 8) |main_~#ad1~0.offset|)) .cse0) (= main_~i~0 .cse0))) [2020-09-04 22:06:31,311 INFO L264 CegarLoopResult]: At program point L25-2(line 25) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (<= (+ main_~i~0 1) .cse0) (= |main_~#ad1~0.offset| 0) (<= |main_#t~mem2| (+ .cse0 9)) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* .cse0 8) |main_~#ad1~0.offset|)) .cse0))) [2020-09-04 22:06:31,311 INFO L264 CegarLoopResult]: At program point L21(lines 21 32) the Hoare annotation is: (= |main_~#ad1~0.offset| 0) [2020-09-04 22:06:31,311 INFO L271 CegarLoopResult]: At program point L21-2(lines 21 32) the Hoare annotation is: true [2020-09-04 22:06:31,311 INFO L264 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (= |main_~#ad1~0.offset| 0) [2020-09-04 22:06:31,311 INFO L264 CegarLoopResult]: At program point L17-1(line 17) the Hoare annotation is: (= |main_~#ad1~0.offset| 0) [2020-09-04 22:06:31,312 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 14 38) the Hoare annotation is: true [2020-09-04 22:06:31,312 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 36) the Hoare annotation is: false [2020-09-04 22:06:31,312 INFO L264 CegarLoopResult]: At program point L30(lines 15 38) the Hoare annotation is: false [2020-09-04 22:06:31,312 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 14 38) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-04 22:06:31,312 INFO L264 CegarLoopResult]: At program point L26-1(lines 26 28) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |main_~#ad1~0.base|)) (.cse1 (* 8 |main_#t~mem3|)) (.cse7 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (let ((.cse2 (= |main_~#ad1~0.offset| 0)) (.cse3 (<= .cse1 (* 8 .cse7))) (.cse4 (= |main_~#ad1~0.offset| main_~ad2~0.offset)) (.cse5 (= |main_~#ad1~0.base| main_~ad2~0.base)) (.cse6 (= (select .cse0 (+ (* .cse7 8) |main_~#ad1~0.offset|)) .cse7))) (or (and (= |main_#t~mem3| (select .cse0 (+ (* |main_#t~mem3| 8) |main_~#ad1~0.offset|))) (<= (* 8 main_~i~0) .cse1) .cse2 .cse3 .cse4 .cse5 .cse6) (and (<= (+ main_~i~0 1) |main_#t~mem3|) .cse2 .cse3 .cse4 .cse5 .cse6)))) [2020-09-04 22:06:31,313 INFO L264 CegarLoopResult]: At program point L26-2(line 26) the Hoare annotation is: (let ((.cse0 (* 8 |main_#t~mem3|)) (.cse1 (select |#memory_int| |main_~#ad1~0.base|)) (.cse2 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (<= (* 8 main_~i~0) .cse0) (= |main_~#ad1~0.offset| 0) (= main_~i~0 (select .cse1 (+ (* main_~i~0 8) |main_~#ad1~0.offset|))) (<= .cse0 (* 8 .cse2)) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= (select .cse1 (+ (* .cse2 8) |main_~#ad1~0.offset|)) .cse2))) [2020-09-04 22:06:31,313 INFO L264 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (= |main_~#ad1~0.offset| 0) [2020-09-04 22:06:31,313 INFO L264 CegarLoopResult]: At program point L26-4(line 26) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (<= (+ main_~i~0 1) |main_#t~mem3|) (= |main_~#ad1~0.offset| 0) (<= (* 8 |main_#t~mem3|) (* 8 .cse0)) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* .cse0 8) |main_~#ad1~0.offset|)) .cse0))) [2020-09-04 22:06:31,313 INFO L264 CegarLoopResult]: At program point L26-5(lines 26 28) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (= |main_~#ad1~0.offset| 0) (<= (* 8 main_~i~0) (* 8 .cse0)) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* .cse0 8) |main_~#ad1~0.offset|)) .cse0))) [2020-09-04 22:06:31,314 INFO L264 CegarLoopResult]: At program point L26-6(lines 26 28) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |main_~#ad1~0.base|)) (.cse1 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (= |main_~#ad1~0.offset| 0) (= main_~i~0 (select .cse0 (+ (* main_~i~0 8) |main_~#ad1~0.offset|))) (<= (* 8 main_~i~0) (* 8 .cse1)) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= (select .cse0 (+ (* .cse1 8) |main_~#ad1~0.offset|)) .cse1))) [2020-09-04 22:06:31,314 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 9 12) the Hoare annotation is: true [2020-09-04 22:06:31,314 INFO L264 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: (and (= check_~ad1.offset |check_#in~ad1.offset|) (= check_~ad1.base |check_#in~ad1.base|) (= |check_#in~b| check_~b)) [2020-09-04 22:06:31,314 INFO L264 CegarLoopResult]: At program point L11-1(line 11) the Hoare annotation is: (and (= check_~ad1.offset |check_#in~ad1.offset|) (= check_~ad1.base |check_#in~ad1.base|) (= |check_#t~mem0| (select (select |#memory_int| |check_#in~ad1.base|) (+ |check_#in~ad1.offset| (* check_~b 8)))) (= |check_#in~b| check_~b)) [2020-09-04 22:06:31,315 INFO L264 CegarLoopResult]: At program point L9(lines 9 12) the Hoare annotation is: (and (= check_~ad1.offset |check_#in~ad1.offset|) (= check_~ad1.base |check_#in~ad1.base|)) [2020-09-04 22:06:31,315 INFO L264 CegarLoopResult]: At program point L11-2(line 11) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |check_#in~ad1.base|))) (and (= check_~ad1.offset |check_#in~ad1.offset|) (= check_~ad1.base |check_#in~ad1.base|) (or (not (= |check_#in~b| (select .cse0 (+ |check_#in~ad1.offset| (* |check_#in~b| 8))))) (<= 1 |check_#res|)) (= |check_#t~mem0| (select .cse0 (+ |check_#in~ad1.offset| (* check_~b 8)))) (= |check_#in~b| check_~b))) [2020-09-04 22:06:31,315 INFO L264 CegarLoopResult]: At program point checkFINAL(lines 9 12) the Hoare annotation is: (and (= check_~ad1.offset |check_#in~ad1.offset|) (= check_~ad1.base |check_#in~ad1.base|) (or (not (= |check_#in~b| (select (select |#memory_int| |check_#in~ad1.base|) (+ |check_#in~ad1.offset| (* |check_#in~b| 8))))) (<= 1 |check_#res|)) (= |check_#in~b| check_~b)) [2020-09-04 22:06:31,316 INFO L264 CegarLoopResult]: At program point checkEXIT(lines 9 12) the Hoare annotation is: (and (= check_~ad1.offset |check_#in~ad1.offset|) (= check_~ad1.base |check_#in~ad1.base|) (or (not (= |check_#in~b| (select (select |#memory_int| |check_#in~ad1.base|) (+ |check_#in~ad1.offset| (* |check_#in~b| 8))))) (<= 1 |check_#res|)) (= |check_#in~b| check_~b)) [2020-09-04 22:06:31,333 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-04 22:06:31,335 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-04 22:06:31,335 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-04 22:06:31,335 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-04 22:06:31,341 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-04 22:06:31,341 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-04 22:06:31,341 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-04 22:06:31,341 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-04 22:06:31,344 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-04 22:06:31,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 10:06:31 BoogieIcfgContainer [2020-09-04 22:06:31,347 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 22:06:31,350 INFO L168 Benchmark]: Toolchain (without parser) took 4294.97 ms. Allocated memory was 138.4 MB in the beginning and 247.5 MB in the end (delta: 109.1 MB). Free memory was 103.0 MB in the beginning and 100.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 112.0 MB. Max. memory is 7.1 GB. [2020-09-04 22:06:31,352 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 138.4 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-09-04 22:06:31,353 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.60 ms. Allocated memory is still 138.4 MB. Free memory was 102.8 MB in the beginning and 92.2 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-09-04 22:06:31,354 INFO L168 Benchmark]: Boogie Preprocessor took 116.46 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 92.2 MB in the beginning and 179.6 MB in the end (delta: -87.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-09-04 22:06:31,355 INFO L168 Benchmark]: RCFGBuilder took 361.17 ms. Allocated memory is still 201.3 MB. Free memory was 179.0 MB in the beginning and 161.7 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. [2020-09-04 22:06:31,356 INFO L168 Benchmark]: TraceAbstraction took 3482.48 ms. Allocated memory was 201.3 MB in the beginning and 247.5 MB in the end (delta: 46.1 MB). Free memory was 161.7 MB in the beginning and 100.0 MB in the end (delta: 61.7 MB). Peak memory consumption was 107.9 MB. Max. memory is 7.1 GB. [2020-09-04 22:06:31,360 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 138.4 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 328.60 ms. Allocated memory is still 138.4 MB. Free memory was 102.8 MB in the beginning and 92.2 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.46 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 92.2 MB in the beginning and 179.6 MB in the end (delta: -87.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 361.17 ms. Allocated memory is still 201.3 MB. Free memory was 179.0 MB in the beginning and 161.7 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3482.48 ms. Allocated memory was 201.3 MB in the beginning and 247.5 MB in the end (delta: 46.1 MB). Free memory was 161.7 MB in the beginning and 100.0 MB in the end (delta: 61.7 MB). Peak memory consumption was 107.9 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 - 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 - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 36]: 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: 15]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 26]: Loop Invariant [2020-09-04 22:06:31,370 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-04 22:06:31,371 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-04 22:06:31,371 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-04 22:06:31,371 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-04 22:06:31,372 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-04 22:06:31,372 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-04 22:06:31,372 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-04 22:06:31,373 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((ad1 == 0 && 8 * i <= 8 * unknown-#memory_int-unknown[pa][pa]) && ad1 == ad2) && ad1 == ad2) && unknown-#memory_int-unknown[ad1][unknown-#memory_int-unknown[pa][pa] * 8 + ad1] == unknown-#memory_int-unknown[pa][pa] - ProcedureContractResult [Line: 14]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 9]: Procedure Contract for check [2020-09-04 22:06:31,373 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-04 22:06:31,374 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived contract for procedure check: ((ad1 == ad1 && ad1 == ad1) && (!(\old(b) == unknown-#memory_int-unknown[ad1][ad1 + \old(b) * 8]) || 1 <= \result)) && \old(b) == b - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 52 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 105 SDtfs, 90 SDslu, 249 SDs, 0 SdLazy, 367 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred 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, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 52 LocationsWithAnnotation, 66 PreInvPairs, 80 NumberOfFragments, 866 HoareAnnotationTreeSize, 66 FomulaSimplifications, 59 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 52 FomulaSimplificationsInter, 238 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 28376 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2 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 correct! Received shutdown request...